Screen display key input unit

A screen display key input unit. A screen display has a series of keys which can be operated by touching with a pen, a mouse or the like. Each of the keys are defined with first and second graphic character codes. A key input device points out a key display area on the screen while a selection processor selects one of the two graphic character codes on the key by determining the difference of key selection operations of the key input. The two graphic character codes are defined on each of the keys so that the number of keys shown on the screen is reduced as compared to conventional unit where each key is defined with a single graphic character code.

BACKGROUND OF THE INVENTION
 1. Field of the Invention
 This invention relates to an input unit available for a character input
 device and in an input technology and, more particularly, to a screen
 display key input unit for inputting characters and symbols indicated
 within key area displayed on a screen of an electric tool, for example
 electric notebook, small word processor or personal computer, by directly
 touching the keys with a pen or fingers, or by shifting a pointer on the
 screen with a mouse or a tablet.
 2. Discussion of the Background
 A personal computer, a word processor or the like is known well in the art
 as a general information processing unit and has been miniaturized wile
 keeping their high performance. A size of a computer has been shifted from
 a relatively large desk type general purpose computer to a laptop type
 small computer and further to a notebook type small-sized computer. But,
 such miniaturization recently makes no progress. Because, there is
 obviously a limit of miniaturization of keyboard when considering its
 handling.
 Accordingly, it is remarkable for general companies which have utilized
 portable personal computers, electric notebooks, and portable remote
 terminals as their business portable tools to use a screen touch input
 system in which an input procedure is done by touching the screen with pen
 or fingers as hopeless.
 Recently, as operating systems and software improved, a desktop computer
 and a note-size computer shift to utilize GUI (Graphic User Interface) in
 inputting operation without using a keyboard, wherein several icons
 displayed on a screen are selected by mouse.
 But the present input system using a mouse and a pen on its screen is only
 appropriate for select inputting procedure of "MENU" and "COMMAND". They
 are not suitable to input characters when writing a composition.
 A freehand input system as one of pen input system is convenient for
 persons that are hard to deal with keyboard. But, the freehand input
 system does not assure enough recognition rate and needs much time for
 converting characters into Kanji-character, Katakana-character,
 Hiragana-character and the like. The character conversion in freehand
 input system is carried out stepwise though "freehand
 input".fwdarw."recognition".fwdarw."conversion".
 There is also known so-called "character input board" in which keys are
 arranged(displayed) on a screen (Soft Key) just like a general keyboard
 (Hard Key) so that the displayed respective keys are selected and inputted
 by an electric pen and a mouse.
 These soft keys on the character input board are nothing but hard keys
 shown on a screen and are condensed within a narrow screen, which leads an
 operator into a bad operational environment.
 One of the popular conventional character input board is so-called "QWERTY"
 keyboard as shown in FIG. 55 or "Japanese syllabary" keyboard to smoothly
 input Japanese characters as shown in FIG. 56. Both of keyboards are
 organized with 10 files, a moving area for pen and mouse is relatively
 large and size of each soft key is so small that the operator does not
 comfortably operate the keyboards.
 SUMMARY OF THE INVENTION
 It is an object of the present invention to provide a screen display key
 input unit for inputting keys displayed on a screen by using pen, mouse or
 the like, so that the number of keys is decreased and the operability for
 operators can be improved.
 The present invention, which relates to a screen display key input unit for
 selecting and inputting keys displayed on a screen, is characterized by
 including keys displayed on the screen and being allocated at least first
 and second graphic character codes generating characters, digits and
 symbols; key input means for designating each key area showing said
 respective keys; and selection processing means for outputting either the
 first or second graphic character code based on a decision where said key
 input means designates within the key area.
 According to the present invention as described above, a key can be
 allocated two graphic character codes, such as a letters, a digit, a
 symbol or the like, so that, for example, 26 alphabets can be defined on
 thirteen keys, thereby allowing the number of keys to be reduced to
 approximate half as compared with a conventional number of keys. As a
 result, the operability can be improved in view of the smaller degree of
 the movement of a pen, a mouse or the like for selecting the key and a
 larger size of each of the keys.
 In the present invention, the key input means is touch-sensitive input
 means for touching the respective key area shown on the screen, and the
 selection processing means includes criterion means for deciding whether
 the touch-sensitive input means shifts over a predetermined length with
 continuous touch to the key area and character generation means for
 outputting the first graphic character code allocated to the key when the
 criterion means decides that a moving distance of the touch-sensitive
 input means is shorter than the predetermined length and outputting the
 second graphic character code allocated to the key when the criterion
 means decides that a moving distance of the touch-sensitive input means is
 longer than the predetermined length.
 With the above structure, the key selection operations can be changed by
 changing the length which the key is touched with the touch input means,
 thus improving the operability of inputting.
 In the present invention, the key input means is touch-sensitive input
 means for touching the respective key area shown on the screen, and the
 selection processing means includes criterion means for deciding whether
 the touch-sensitive input means keeps touching to the key area for a
 predetermined period of time and character generation means for outputting
 the first graphic character code allocated to the key when the criterion
 means decides that a touching period of time of the touch-sensitive input
 means is shorter than the predetermined period of time and outputting the
 second graphic character code allocated to the key when the criterion
 means decides that a touching period of time of the touch-sensitive input
 means is longer than the predetermined period of time.
 With the structured described above, the key selection operation can be
 changed by changing the period of time while the key is touched with the
 touch input means, thus enhancing the operability of inputting.
 In the present invention, the key input means is touch-sensitive input
 means for touching the respective key area shown on the screen, and the
 selection processing means includes criterion means for deciding whether
 the touch-sensitive input means pushes the key area under a predetermined
 pressure and character generation means for outputting the first graphic
 character code allocated to the key when the criterion means decides that
 a pressure degree applied by the touch-sensitive input means is lower than
 the predetermined pressure and outputting the second graphic character
 code allocated to the key when the criterion means decides that a pressure
 degree applied by the touch-sensitive input means is higher than the
 predetermined pressure.
 With the above structure, the key selection operation can be changed by
 changing a pressure which the key is touched with the touch input means,
 thus improving the operability of inputting.
 In the present invention, the key input means includes touch-sensitive
 input means for touching the respective key area shown on the screen and a
 push-button provided outside the screen, and the selection processing
 means has character generation means for outputting the first graphic
 character code allocated to the key when the key area is simply touched
 with the touch-sensitive input means without pressing the push-button and
 outputting the second graphic character code allocated to the key when the
 key area is touched with the touch-sensitive input means with pressing the
 push-button.
 As to the above structure, in addition to a hand for carrying out the touch
 operation with the pen, a finger or the like, another hand is needed to
 push the button, but, the shift operation can be more easily carried out
 with both hands.
 In the present invention, the key input means is touch-sensitive input
 means for touching the respective key area shown on the screen, the key
 area showing the key is composed by first half-area corresponding to the
 first graphic character code and second half-area corresponding to the
 second graphic character code, and further, the selection processing means
 includes criterion means for deciding which half-area the touch-sensitive
 input means touches and character generation means for outputting the
 first graphic character code when the criterion means decides that the
 touched area by the touch-sensitive input means belongs to the first
 half-area and outputting the second graphic character code when the
 criterion means decides that the touched area by the touch-sensitive input
 means belongs to the second half-area.
 In the above structure, by showing characters, symbols or the like
 corresponding to the first and second graphic character codes on the first
 and second areas of each of the keys, the first graphic character code can
 be inputted when the first area is touched and the second graphic
 character code can be inputted when the second area is touched. A symbol
 or the like can be inputted by means of the intuitional operation of
 touching a part where shown with the inputted character, symbol or the
 like, thereby allowing the operation to be easily understood and the
 operability to be enhanced.
 Here, as the key input means, a pen input means including a touch pen or a
 touch screen input means for touching the respective key area shown on the
 screen with fingers can be used.
 In the present invention, the key input means is pointer input means
 provided with at least first and second buttons thereon, having a pointer
 shown on and moved within the screen for touching the respective key area
 shown on the screen, and the selection processing means includes criterion
 means for deciding which button provided on the pointer input means is
 pressed when the pointer placed within the key area and character
 generation means for outputting the first graphic character code allocated
 to the key when the criterion means decides that the first button of the
 pointer input means is pressed and outputting the second graphic character
 code allocated to the key when the criterion means decides that the second
 button of the pointer input means is pressed.
 With the structure as described above, the key selection operation can be
 changed by appropriately selecting the clicked button while the inputted
 key is being pointed with the pointer input means, resulting in the
 improved operability of inputting.
 As the pointer input means, in addition to a joystick, a mouse, trackball,
 a tablet, various input means, which has a button or a function
 corresponding to the button, and which is capable of moving the pointer
 shown on the screen, can be used, for example, a pad type operated by
 being touched on the pad with a finger, a control pad used for an
 operation of a game machine, and so on.
 In the present invention, the key input means is pointer input means
 provided with a button thereon, having a pointer shown on and moved within
 the screen for touching the respective key area shown on the screen, and
 the selection processing means includes criterion means for deciding
 whether the button of the pointer input means is pressed or pressed with
 dragging of the pointer input means and character generation means for
 outputting the first graphic character code allocated to the key when the
 criterion means decides that the button of the pointer input means is
 pressed and outputting the second graphic character code allocated to the
 key when the criterion means decides that the button of the pointer input
 means is pressed with dragging of the pointer input means.
 With the above structure, even when the pointer input means has only one
 button, the present invention can be applied.
 In the present invention, the key input means is pointer input means
 provided with a button thereon, having a pointer shown on and moved within
 the screen for touching the respective key area shown on the screen, and
 the selection processing means includes criterion means for judging the
 number of button pressing times within a predetermined period of time and
 character generation means for outputting the first graphic character code
 allocated to the key when the criterion means decides that the number of
 button pressing times is once and outputting the second graphic character
 code allocated to the key when the criterion means decides that the number
 of button pressing times is twice.
 In the above case, the input can be determined whether the key is touched
 once or twice within the predetermined time in the same way as a
 double-clicking of the mouse and so on. Provided that the time for
 determining the difference of the touches is adapted to be appropriately
 adjusted by an operator of the input unit, the input can be properly
 determined whether the key is touched once or twice even when the interval
 between the tow touches is differed in dependence on the adjustment of
 each of the operators.
 In the present invention, the key input means is pointer input means
 provided with a button thereon, having a pointer shown on and moved within
 the screen for touching the respective key area shown on the screen, the
 key area showing the key is composed by first half-area corresponding to
 the first graphic character code and second half-area corresponding to the
 second graphic character code, and further, the selection processing means
 includes criterion means for deciding which half-area the pointer touches
 and character generation means for outputting the first graphic character
 code when the criterion means decides that the touched area by the pointer
 belongs to the first half-area and outputting the second graphic character
 code when the criterion means decides that the touched area by the pointer
 belongs to the second half-area.
 In the above structure, by showing characters, symbols or the like
 corresponding to the first and second graphic character codes on the first
 and second areas of each of the keys, the first graphic character code can
 be inputted when the first area is touched and the second graphic
 character code can be inputted when the second area is touched. A symbol
 or the like can be inputted by means of the intuitional operation of
 touching a part where shown with the inputted character, symbol or the
 like, thereby allowing the operation to be easily understood and the
 operability to be enhanced.
 In the present invention, the screen is shown thereon with fifteen main
 keys to be arranged in 3 ranks lengthwise and 5 files breadthwise, and
 each of the main keys is shown with characters, symbols or the like
 corresponding to at least the first and second graphic character codes.
 In the above case, although only 15 main keys are provided, at least two
 keys (symbols or the like) can be allocated each of the keys, that is to
 say, at least 30 keys are defined in total. Therefore, the main keys can
 be defined with Japanese Punctuation Marks "{character pullout}" and
 "{character pullout}", and further, with 19 alphabets used in the input
 with the Japanese Roman characters, namely, letters "A", "I", "U", "E" and
 "O" as a vowel sound; letters "K", "S", "T", "N", "H", "M", "Y", "R" and
 "W" for inputting Japanese characters of voiceless sounds from "Ka" group
 to "Wa" group of Japanese syllabary, which are formed by combing with a
 vowel sound; and letters "G", "Z", "D", "P" and "B" for inputting Japanese
 characters of a voice sound and the p-sound in the kana syllabary, which
 are formed by combining with a vowel sound, with the result that the
 Japanese input can sufficiently carried out without the change into the
 other key arrangements when the Japanese ken arrangement is defined.
 Similarly, the main keys can be defined with a comma ",", a period "." and
 so on in addition to 26 alphabets, therefore, the English input can be
 sufficiently carried out when the English key arrangement is defined.
 The fifteen keys are greatly smaller in number as compared with a
 conventional QWERTY arrangement or Japanese syllabary arrangement.
 Therefore, provided that each of the main keys is shown in the same size
 as a key in the conventional QWERTY arrangement or Japanese syllabary
 arrangement, the key display area can be smaller, so that the screen
 display key input unit can be further designed in a smaller version, and
 the degree of the movement of the finger, the pen, the pointer of the
 mouse or the like for touching the key can be reduced, resulting in the
 enhanced operability.
 In the other way, provided that an area arranged with the main keys is
 designed to be in the same size as an area arranged the keys of the
 conventional QWERTY arrangement or Japanese syllabary arrangement, each
 size of the main keys can be larger than the conventional key, so that the
 key is easily touched with the pen or the finger, resulting in the
 improved operability.
 The screen display key input unit according to the present invention is
 shown with the keys as follows: the main keys are respectively allocated
 to show letters "Q", "E", "T", "U", and "O" on each left half-area of the
 five keys from the left to the right in the top rank of the arranged
 fifteen main keys, letters "A", "D", "G", "J", and "L" on each left
 half-area of five keys from the left to the right in the middle rank, and
 letters "Z", "C", "B", and "M" on each left half-area of four keys from
 the left to the right in the bottom rank, and further, the keys, allocated
 to show "Q", "E", "T", "U", "O", "A", "D", "G", "J", "Z", "C" and "B" on
 the left half-areas thereof, are respectively allocated to show letters
 "W", "R", "Y", "I", "P", "S", "F", "H", "K", "X", "V" and "N" on the
 respective right half-areas thereof.
 In the present invention as described above, two of alphabets are
 positioned on right and left on each of the keys, and each of alphabets
 are arranged to agree with the QWERTY arrangement, so that the key
 arrangement is designed in the same as a genera keyboard, thus enhancing
 the operability.
 Here, the keys, allocated to show "L" and "M", may be respectively
 allocated a long vowel mark "{character pullout}" and one of Japanese
 Punctuation Mark "{character pullout}" on the right half-areas thereof,
 and, the key, arranged in the rightmost file of the bottom rank of the
 arranged main keys, may be allocated to show another Japanese Punctuation
 Mark "{character pullout}" on the left half-area thereof and a symbol
 "{character pullout}" on the right half-area thereof According to the
 aforementioned key arrangement, Japanese Punctuation Marks "{character
 pullout}" and "{character pullout}" the long vowel mark "{character
 pullout}" and so on, which are frequently used in the Japanese input, can
 be inputted by directly selecting the key, thus enhancing the operability
 of inputting for Japanese.
 Further, the keys, allocated to show "L" and "M", may be respectively
 allocated a semi-colon symbol ";" and a comma symbol "," on the right
 half-areas thereof, and, the key, arranged in the rightmost file of the
 bottom rank of the arranged main keys, may be allocated to show a period
 symbol "." on the left half-area thereof and a colon symbol ":" on the
 right half-area thereof. According to the aforementioned key arrangement,
 a comma ",", a period "." or the like, which are frequently used in the
 Japanese input, can be inputted by directly selecting the key, thus
 enhancing the operability of inputting for English.
 In the present invention, the main keys are defined as follows: the six
 main keys, arranged in the two files relative to any one of the right and
 left sides in a main key area provided with the fifteen main keys, are
 respectively allocated vowel keys for inputting letters "A", "I", "U", "E"
 and "O", showing vowel sounds of Japanese, and a syllabic nasal key for
 inputting a character "{character pullout}" of the syllabic nasal; the
 nine main keys, arranged in the other three files of the main key area,
 are respectively allocated consonant keys for inputting letters "K", "S",
 "T", "N", "H", "M", "Y", "R" and "W"; and the keys, allocated letters "K",
 "S", "T", "N" and "H", are respectively allocated to input letters "G",
 "Z", "D", "P" and "B" in a shift state.
 In this case, the keys for inputting the vowel sound and the keys for
 inputting the consonant sounds are arranged to separate from each other,
 so that the positions of the vowel keys frequently used can be easily
 found in the Japanese Roman character input mutually used with the
 consonant sound and the vowel sound, thus improving the operability. The
 consonant sound for the voiceless sound frequently used in the consonant
 sounds are defined on each of the keys in the non-shift state, so that the
 voiceless sound used frequently can be inputted without the shift
 operation, thereby allowing the operability to be enhanced. The shift
 positions of the keys, allocated letters "K", "S", "T", "N" and "H", in
 the consonant area are respectively allocated letters "G", "Z", "D", "P"
 and "B" for inputting the voiced sound and the p-sound in the kana
 syllabary which are formed by combining with the vowel sound "A", "I",
 "U", "E" and "O", in other words, the keys for inputting characters
 "{character pullout}(Ga)", "{character pullout}(Za)" and "{character
 pullout}(Da)" are respectively arranged to l Al 7X correspond with the
 inputting positions for characters "{character pullout}(Ka)", "{character
 pullout}(Sa)" and "{character pullout}(Ta)", and the keys inputting for
 characters "{character pullout}(Pa)" and "{character pullout}(Ba)" are
 respectively arranged to correspond with the inputting positions for
 characters "{character pullout}(Na)" and "{character pullout}(Ha)", so
 that the key positions for inputting the voiced sound and the p-sound in
 the kana syllabary is easily memorized, thereby allowing the operability
 to be improved.
 Further, when the non-shift position of the keys allocated letters "M",
 "Y", "R" and "W" are allocated a double consonant "{character
 pullout}(ttu)", Japanese Punctuation Marks "{character pullout}" and
 "{character pullout}", a long vowel mark "{character pullout}" and so on,
 even in the small number of keys, the syllabic nasal "{character
 pullout}(n)", a double consonant "{character pullout}(ttu)", Japanese
 Punctuation Marks "{character pullout}" and "{character pullout}" a long
 vowel mark "{character pullout}" can be inputted by touching only one key
 once, resulting in the improved operability. Especially, the syllabic
 nasal "{character pullout}(n)" is defined on one key in the vowel area in
 the non-shift state, so that the syllabic nasal "{character pullout}(n)"
 frequently used in kanji read in Chinese style in the Japanese input can
 be easily inputted.
 In the present invention, the main keys are defined as follows: the five
 main keys of the six main keys, arranged in the two files relative to any
 one of the right and left sides in a main key area provided with the
 fifteen main keys, are respectively allocated letters "A", "I", "U", "E"
 and "O"; the nine keys, arranged in the other three files in the main key
 area, are respectively allocated to input letters "K", "S", "T", "N", "H",
 "M", "Y", "R" and "W"; the respective keys, allocated letters "A", "I",
 "U", "E" and "O", are allocated a letter "Q", a letter "J", a comma ",", a
 period "." and a letter "X" in a shift state; and the respective keys,
 allocated letters "K", "S", "T", "N", "H", "M", "Y", "R" and "W", are
 allocated to input letters "G", "Z", "D", "P", "B", "C", "F", "V" and "L"
 in a shift state.
 Here, in addition to 26 alphabets, each symbol of a comma ",", a period
 ".", an apostrophe "'", and a hyphen "-" which are frequently used in the
 English input can be directly inputted with the touch input, resulting in
 the improved operability of inputting English.
 Many keys of the English key arrangement are arranged to match the
 aforementioned Japanese key arrangement, so that the key positions are
 easily memorized even when the standard arrangement and the English key
 arrangement are combinedly used by changing mutually, resulting in the
 enhanced operability.
 In the present invention, the fifteen main keys are respectively allocated
 to input a digit "0", a digit "1", a digit "2", a digit "3", a digit "4",
 a digit "5", a digit "6", a digit "7", a digit "8", a digit "9", symbol
 "+", a symbol "-", a symbol ".times." or "*" a symbol ".div." or "/" and a
 symbol ".".
 As to the aforementioned key arrangement, digits can be arranged in the
 same way of a numeric keypad in a conventional keyboard, and various
 arithmetic symbols used for calculations can be inputted, thereby allowing
 an operation of inputting digits or calculations to be easier.
 In the present invention, the fifteen main keys are respectively allocated
 to input, as the first and second graphic character codes, bracket symbols
 ".left brkt-top.", ".right brkt-bot.", "(", ")", "&lt;", "&gt;", "[", "]", "{",
 "}", "`", "`", """, and """, a colon symbol ":", a semi-colon symbol ";",
 an asterisk symbol "*", a sharp symbol "#", an and symbol "&", a question
 symbol "?", a qualifying symbol "!", a symbol "/", a symbol "/", a symbol
 ".about.", a qualifying symbol "@", a dollar symbol "$", a yen symbol
 ".Yen.", a hyphen "-", and a symbol "=".
 In this case, various symbols, which has been frequently used but hardly
 inputted conventionally, can be inputted with the touch input with showing
 on each of the main keys, therefore, various symbols can be easily
 inputted. And, the bracket symbols are collectively defined on the six
 main keys, arranged in the two files relative to the left or right side,
 in the shift state and the non-shift state, so that the key positions of
 the bracket symbols and the other symbols are easily distinguished,
 thereby allowing, the operability of inputting.
 In the present invention, the main keys are defined as follows: the six
 main keys, arranged in the two files relative to any one of the right and
 left sides in a main key area provided with the fifteen main keys, are
 respectively allocated vowel keys for inputting letters "A", "I", "U", "E"
 and "O", showing vowel sounds of Japanese, and a syllabic nasal key for
 inputting a character "{character pullout}" of the syllabic nasal; the
 nine keys, arranged in the other three files of the main key area, are
 respectively allocated consonant keys for inputting letters "K", "S", "T",
 "N", "H", "M", "Y", "R" and "W"; the vowel keys allocated letters "A",
 "I", "U", "E" and "O", and a syllabic nasal key allocated a character
 "{character pullout}" are respectively allocated to input letters "AI",
 "UI", "UU", "EI", "OU", and "YUU" in a shift state; and the keys,
 allocated letters "K", "S", "T", "N", "H", "M", "Y", "R" and "W", are
 respectively allocated to input letters "G", "Z", "D", "P", and "B", a
 double consonant character "{character pullout}", one of Japanese
 Punctuation Mark "{character pullout}", another Japanese Punctuation Mark
 "{character pullout}", and a long vowel mark "{character pullout}", in a
 shift state.
 Here, "AI", "UI", "UU", "EI", "OU" and "YUU" can be inputted by touching
 only one key once, so that Japanese characters including a double vowel or
 palatalized syllable frequently used in kanji read with Chinese style,
 such as {character pullout}(KAI KEI), {character pullout}(SUI TEI),
 {character pullout}(KUU KOU), {character pullout}(TYUU SYOU) and so on,
 can be easily inputted, thus increasing efficiency of the input.
 In the present invention, the main keys are defined as follows: the six
 main keys, arranged in the two flies relative to any one of the right and
 left sides in a main key area provided with the fifteen main keys, are
 respectively allocated vowel keys for inputting letters "A", "I", "U", "E"
 and "O", showing vowel sounds of Japanese, and a syllabic nasal key for
 inputting a character "{character pullout}" of the syllabic nasal; the
 nine keys, arranged in the other three files of the main key area, are
 respectively allocated consonant keys for inputting letters "K", "S", "T",
 "N", "H", "M", "Y", "R" and "W"; the vowel keys allocated letters "A",
 "I", "U", "E" and "O", and a syllabic nasal key allocated a character
 "{character pullout}" are respectively allocated to input letters "ya",
 "yuu", "yu", you" and "yo", and a double consonant character "{character
 pullout}", in a shift state; and the keys, allocated letters "K", "S",
 "T", "N", "H", "M", "Y", "R"and "W", are respectively allocated to input
 letters "G", "Z", "D", "P", and "B", a dot symbol "{character pullout}",
 one of Japanese Punctuation Mark "{character pullout}", another Japanese
 Punctuation Mark "{character pullout}", and a long vowel mark "{character
 pullout}" in a shift state.
 Here, palatalized syllables "ya", "yu" and "yo" and long palatalized
 syllables "yuu" and "you" can be inputted by touching the key once with
 the bar touch, resulting in the efficient input of Japanese.
 Further, in the present invention, at least one of the fifteen main keys is
 defined with the third graphic character code in addition to the other two
 graphic character codes, and wherein the selection processing means
 includes criterion means for determining which key selection operation of
 three types is carried out for selecting from the first to third graphic
 character codes inputted by the key input means, and character generation
 means for selecting and outputting any one of the first to third generated
 codes, defined on each of the keys, in response to the key selection
 operation determined by the criterion means.
 In the invention as described above, alphabets are defined on the first and
 second graphic character codes, and a digit, a symbol or the like
 excepting alphabets can be defined on the third graphic character code,
 thereby the digit or the symbol can be inputted by changing the key
 selection operations in the same way as the character (letter) input,
 therefore, the digit or the symbol can be easily inputted as necessary,
 resulting in the improved operability of inputting sentences including
 digits or symbols.
 Further, in the present invention, at least one of the main keys is defined
 with the third graphic character code and the fourth graphic character
 code in addition to the other two graphic character codes, and wherein the
 selection processing means includes criterion means for determining which
 key selection operation of four types is carried out, and character
 generation means for selecting and outputting any one of the first to
 fourth generated codes, defined on each of the keys, in response to the
 key selection operation determined by the criterion means.
 As to the invention as described above, for example, the first and second
 graphic character codes are defined with alphabets, the third graphic
 character code is defined with a digit, and the fourth graphic character
 code can be defined with a symbol or the like, in which the digit and the
 symbol can be inputted by changing the key selection operation in the same
 way of the character (letter) input. Thereby allowing the digit and the
 symbol to be easily inputted as necessary and the operability of inputting
 sentences including the digits or the symbols to be improved.
 The present invention includes arrangement change means for changing the
 arrangements of the generated graphic character codes when a character, a
 digit or a symbol and the key shown with the symbol or the like, which are
 shown on the screen, is touched.
 According to the invention described above, the arrangements of the graphic
 character codes defined on the main key can be changed in response to
 various key arrangements of the arrangement for the Japanese Roman
 character input, English key arrangement, the digit key arrangement, the
 symbol key arrangement and so on, so that the defined keys with only
 fifteen main keys are 15 keys.times.2 (characters or the like of the first
 and second graphic character codes).times.the number of arrangements,
 namely 30 keys.times.the number of arrangements, in which any one of
 characters (letters), digits, symbols or the like can be directly and
 easily inputted with the touch input by changing the arrangements.
 And further, the present invention includes a support key area provided in
 addition to a main key area, provided with fifteen keys arranged in 3
 ranks lengthwise and 5 files breadthwise, to be provided therein with
 plural support keys, defined with various functions, adjacent to the main
 key area.
 The support key area may be positioned in, for example, any one of places
 under and adjacent to the right and left side of the main key area, in
 which it is advisable that at least five support keys are provided
 therein. The aforementioned support keys can be defined with various
 functions needed in the character (letter) input operation, such as a mode
 change function changing the key arrangements shown on the screen, a kanji
 conversion, a space input, a return key, a back space key, a delete key
 and so on, thereby allowing the operability of inputting to be further
 improved.
 Incidentally, the only mode change function is separated to be independent,
 and a mode change key besides the support key may be provided adjacent to
 the main key area. Here, the arrangement of the main keys can be easily
 changed by touching the change key.
 And further, a menu key showing a mode selection menu may be defined in the
 support keys or the like, in which the mode selection menu is shown on the
 screen by pushing the menu key to changed modes.
 In this case, the key arrangements can be defined much more than the mode
 change function is defined in the change key, so that various inputs can
 be practicable, resulting in the improved operability.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
 The preferred embodiments of the present invention will now be described
 with reference to the drawings.
 A screen display key input unit 1 in the first embodiment according to the
 present invention is illustrated in FIG. 1. The screen display key input
 unit 1 has a main body 2 provided with a liquid crystal display 3 to be
 used as a portable remote terminal. The display 3 may be protected by a
 cover pivotally move with reference to the main body 2.
 The liquid crystal display 3 has a data display area 10 to input characters
 and display data when the screen display key input unit 1 is used to
 operate word processor, spreadsheet, address book, electric mail or
 schedule function. The actual graphic format in the data display area 10
 may be arranged based on the function in operation.
 There is a key input area 12 at a lower portion of the data display area
 10. The key input area 12 may be constantly displayed. But, in view of
 operability of the unit, it is preferable to pop up the key input area 12
 until using almost all of the data area 10 by designing the screen to have
 a key starting input operation.
 The screen display key input unit 1 is further provided with a pen 15 used
 in a touch-sensitive input means as a key input means as shown in FIG. 1.
 The pen 15 may be held by a holder optionally provided to the main body,
 so that the pen 15 shall not be lost.
 The actual operation of the screen display key input unit 1 is so carried
 out that the main body is taken by the left(right) hand or put on a table
 and the pen 15 is hold by the right(left) hand.
 The details of the key input area 12 is depicted in FIG. 2 in which there
 are lengthwise and breadthwise 15 main keys 21 to 35 in main key area 20.
 The main keys 21 to 35 shown in the main key area 20 have two display modes
 changed by pressing a mode change key (not-shown) or operating or
 designating an area except the main key area 20 by the pen 15, one being a
 QWERTY Japanese key arrangement to input Roman characters and the other
 being a QWERTY English key arrangement.
 The definite arrangement of the main keys 21 to 35 (alphabets) according to
 the QWERTY Japanese key arrangement conforms to a standard QWERTY
 arrangement used in the general keyboard.
 In general, as shown in FIG. 2, the left half-area of the five keys 21 to
 25 arranged at a top rank are respectively allocated to show "Q" on the
 key 21, "E" on the key 22, "T" on the key 23, "U" on the key 24 and "O" on
 the key 25. The left half-area of the five keys 26 to 30 arranged at a
 middle rank are respectively allocated to show "A" on the key 26, "D" on.
 the key 27, "G" on the key 28, "J"on the key 29 and "L" on the key 30. The
 left half-area of the five keys 31 to 35 arranged at a bottom rank are
 respectively allocated to show "Z" on the key 31, "C" on the key 32, "B"
 on the key 33, "M" on the key 34 and "{character pullout}(one of Japanese
 Punctuation Mark)" on the key 35.
 The right half-area of the keys 21 to 35 are respectively allocated to show
 "W" on the key 21, "R" on the key 22, "Y" on the key 23, "I" on the key
 24, "P" on the key 25, "S" on the key 26, "F" on the key 27, "H" on the
 key 28, "K" on the key 29, "{character pullout}long vowel mark)" on the
 key 30, "X" on the key 31, "V" on the key 32, "N" on the key 33,
 "{character pullout}(one of Japanese Punctuation Mark)" on the key 34, and
 "{character pullout}" mark on the key 35.
 From another point of view, the five keys 21 to 25 from the left to the
 right in the top rank are respectively allocated to input "QW", "ER",
 "TY", "UI", and "OP". The five keys 26 to 30 in the middle rank are also
 allocated to input "AS", "DF", "GH", "JK", and "{character pullout}" in
 the same way. The five keys 31 to 35 in the bottom rank are provided to
 input "ZX", "CV", "BN", "{character pullout}" and "{character
 pullout}{character pullout}".
 The first graphic character code of each key 21 to 35 is applied to mean
 character shown at the left side of the respective key input area. The
 second graphic character code is applied to mean character shown at the
 right side of the respective key input area in the same way.
 Turning to a character arrangement (alphabets) on the main keys 21 to 35 in
 FIG. 3 belongs to a QWERTY key arrangement as the mentioned QWERTY
 Japanese key arrangement. But, when inputting English characters, there is
 no need to input Japanese Punctuation Marks, so that a comma ",", period
 ".", semi-colon ";", and a colon ":" are preferably allocated to the keys
 considering a smooth input operation.
 In general, as shown in FIG. 3, the left half-area of the five keys 21 to
 25 (first graphic character code) arranged at a top rank are respectively
 allocated to show "Q" on the key 21, "E" on the key 22, "T" on the key 23,
 "U" on the key 24 and "O" on the key 25. The left half-area of the five
 keys 26 to 30 arranged at a middle rank are respectively allocated to show
 "A" on the key 26, "D" on the key 27, "G" on the key 28, "J" on the key 29
 and "L" on the key 30. The left half-area of the five keys 31 to 35
 arranged at a bottom rank are respectively allocated to show "Z" on the
 key 31, "C" on the key 32, "B" on the key 33, "M" on the key 34 and
 period; "." on the key 35.
 The right half-area of the keys 21 to 35 are respectively allocated to show
 "W" on the key 21, "R" on the key 22, "Y" on the key 23, "I" on the key
 24, "P" on the key 25, "S" on the key 26, "F" on the key 27, "H" on the
 key 28, "K" on the key 29, semi-colon ";" on the key 30, "X" on the key
 31, "V" on the key 32, "N" on the key 33, comma "," on the key 34, and
 colon ":" on the key 35.
 From another point of view, the five keys 21 to 25 from the left to the
 right in the top rank are respectively allocated to input "QW", "ER",
 "TY", "UI", and "OP". The five keys 26 to 30 in the middle rank are also
 allocated to input "AS", "DF", "GH", "JK", and "L;" in the same way. The
 five keys 31 to 35 in the bottom rank are provided to input "ZX", "CV",
 "BN", "M," and ".:".
 An internal processing method in the screen display key input unit 1
 according to the present invention will be explained hereunder in the
 light of FIGS. 4 and 5.
 FIG. 4 is a block diagram to visually understand an internal structure in
 the screen display key input unit 1. FIG. 5 is a flow chart actually
 carried out in the unit 1.
 The screen display key input unit I consists of a key input means 71 and a
 selection processing means 72 including a criterion means 73 and a
 character generation means 74.
 The key input means 71 in this embodiment is a touch-sensitive input means
 using the pen 15 as already explained to sense a touch by this pen 15
 within the main key area 20, which is represented as a Step 1 in the
 drawing. A step will be simply replaced with "S" to shorten a sentence.
 When being touched by the pen 15, the criterion means 73 judges whether the
 pen 15 shifts over a predetermined length with continuous touch to a key
 (=Bar touch) or the pen 15 moves within the predetermined length (=Point
 touch) (S2).
 In case of the point touch based on a decision in the criterion means 73,
 the character generation means 74 generates the first graphic character
 code allocated to the left half-area in the touched key as a standard
 process (S3).
 It the touch is considered as the bar touch in the criterion means 73, the
 character generation means 74 generates the second graphic character code
 allocated to the right half-area in the touched key as a shift process
 (S4).
 The results from the character generation means 74 are displayed on the
 liquid crystal display 3.
 A whole process by one touch input is carried out as aforementioned and
 subsequent inputs are done in the same way. When using the Japanese key
 arrangement shown in FIG. 2, the inputted alphabets are recognized as
 Roman characters and displayed in the form of Japanese hiragana characters
 on the display 3 by a kana-kanji conversion program preliminary memorized
 in the screen display key input unit 1. If necessary, these Japanese
 hiragana characters are automatically converted or manually converted by a
 conversion key (not-shown) into kanji characters.
 The judgment process of the criterion means 73 in the touch input is
 further explained in the following.
 As will be understood from FIG. 6, the criterion means 73 is provided to
 determine which half area; the left half-area (Letter "A" in FIG. 6) or
 the right half-area (Letter "B" in FIG. 6) in the respective keys 21 to 35
 is selected by the pen 15.
 Two decision criterion in the touch operation are visually shown in FIGS. 7
 and 8.
 One decision criterion is shown in FIG. 7 and the touch operation is
 confirmed every pixel 76 forming the respective keys 21 to 35. Where 100
 pixels 76 are arranged in a grid 10 lengthwise and 10 widthwise in each
 display area of the keys 21 to 35, as shown in FIG. 71, the criterion
 means 73 determines that the input is carried out with the point touch
 when the pen 15 touches the pixels 76 of less than the predetermined
 number of pixels 76 in any display area of the keys 21 to 35, for example,
 one of the pixels 76 in any display area of the keys 21 to 35 or the
 pixels 76 of the initial pixel 76 and at least one of the pixels 76
 positioned around the initial pixel 76 (the pixels 76 illustrated with "+"
 in FIG. 7)(when the pixel is touched with the pointer). Further, the
 criterion means 73 determines, as shown in FIG. 72, that the input is
 carried out with the bar touch when the more than four pixels 76 aligned
 in one direction are touched (when the pixels are touched to draw a bar of
 a hyphen "-").
 FIG. 7 shows an example the pen 15 is moved in the horizontal direction,
 but the input is determined as the bar touch input insofar as the more
 than four pixels 76 are touched even when the pen 15 is moved in the
 vertical direction, in a slanting direction or along a shape "{character
 pullout}" or "{character pullout}". The touch input can be started from
 any point in each area of the keys 21 to 35 and finished to put the end of
 the touch (bar) at the outside of the key area so that the touch input is
 determined to be carried out with which of the point touch or the bar
 touch in dependence upon the number of pixels touched in the key area.
 The number of pixels 76 as a criterion is not limited to be more and less
 than four, but may be defined to depend on, especially, the number of
 pixels 76 in the display area or the like. For example, where the number
 of pixels 76 is defined as 25 of a grid 5 lengthwise and 5 widthwise, the
 bar touch may be determined when the more than two pixels 76 are touched.
 The other decision criterion is shown in FIG. 8 and the touch operation is
 confirmed with a distance between the starting point and the finishing
 point touched with the pen 15. The criterion means 73 determines that the
 input is carried out with the point touch when the length touched by the
 pen 15 is shorter than the previously defined length as shown in FIG. 81,
 and that, as shown in FIG. 82, the input is carried out with the bar touch
 when the length touched by the pen 15 is longer than the previously
 defined length.
 Here, the pen 15 can move in the vertical direction or a slanting direction
 or move to change the moving direction at some midpoint to form a mark "",
 in other words, the bar touch input is determined when a distance between
 the starting point to the finishing point, namely, the moving distance of
 the pen 15 is longer than the predetermined length.
 Incidentally, the defined length as a criterion may be previously defined
 or defined as necessary by an operator.
 Effects in the embodiment will be described below.
 According to the embodiment, the first and second graphic character codes
 are defined in each of the keys 21 to 35, so that two of characters
 (alphabets) and symbols are allocated each of the keys 21 to 35.
 Therefore, the number of keys can be reduced to half as compared with a
 conventional key allocated with one character.
 For example, although only 15 main keys 21 to 35 are provided as shown in
 FIG. 2, two graphic character codes can be allocated each of the keys 21
 to 35, that is to say, 30 graphic character codes are defined in total.
 Therefore, in addition to 26 alphabets used in English input and in
 Japanese Roman character input, symbols used frequently, such as a comma
 ",", a period "." and so on in the English input and Japanese Punctuation
 marks "{character pullout}" and "{character pullout}" and the like in the
 Japanese input, can be also allocated on the main keys 21 to 35, with the
 result that even with the small number of keys, the English input or the
 Japanese input is possible sufficiently.
 As a result, Roman character input or English input can be carried out by
 using the fifteen main keys 21 to 35 which is much smaller number than the
 conventional QWERTY key arrangement or the conventional arrangement of the
 Japanese syllabary, so that the main key area 20 as the key display area
 can be defined in a smaller size provided that each of the keys 21 to 35
 is displayed on the display 3 with the same size as the key of the
 conventional QWERTY key arrangement or the conventional arrangement of the
 Japanese syllabary, resulting in decrease of the degree that the pen 15
 touching the keys 21 to 35 is moved, and in the improved operability.
 By decreasing the size of the main key area 20, the size of the screen
 touch input unit 1 can be smaller, the display area 10 for data or the
 like can be extended, and the operational ease or the handling properties
 can be further improved.
 Turning to, provided that the size of the main key area 20 is defined to be
 similar to the conventional key arrangement area of the QWERTY key
 arrangement or the arrangement of the Japanese syllabary, the size of the
 main key area 20 can be larger with compared as the conventional size, so
 that the keys 21 to 35 are easily touched with the pen 15 or a finger,
 resulting in the improved operational ease.
 Symbols used frequently, such as a comma ",", a period "." and so on in the
 English input and Japanese Punctuation marks "{character pullout}" and
 "{character pullout}" and the like in the Japanese input, can be directly
 inputted with the touch input by being displayed on each of the keys 30,
 34 and 35, resulting in the further improved operability in the English
 input and the Japanese input.
 The fifteen main keys 21 to 35 are arranged in order of the QWERTY
 arrangement accustomed and widely used conventionally, so that it is easy
 for most of persons accustomed to using the QWERTY arrangement to acquire
 the usage of the key arrangement of the embodiment, and naturally,
 immediately use the screen display key input unit.
 Furthermore, the English key arrangement of FIG. 3 corresponds with the
 Japanese key arrangement of FIG. 2 excepting the key for symbols, so that
 the key arrangement is easily acquired and the operational ease can be
 improved, even when the English key arrangement is used in combination
 with the Japanese key arrangement by changing from each other.
 For the input for two characters and/or symbols displayed on each area of
 the keys 21 to 35, the operation of two types can be carried out by
 slightly changing the movements of the pen 15, that is to say, by choosing
 between the point touch input carried out at a point and the bar touch
 input carried out by moving the pen for the predetermined length to keep
 touching, therefore, one of two characters and/or symbols allocated each
 of the keys 21 to 35, namely, one of the first graphic character code or
 the second graphic character code, can be inputted with the easy
 operation.
 As a result, in the touch input with the use of the pen 15, the input
 operation of two characters allocated one key can be carried out like the
 shift operation of the conventional key board, and that with great
 facility, resulting in the improved operability.
 Provided the degree that the pen 15 moves, which is determined as the bar
 touch input, is adjusted as necessary by an operator of the input unit 1,
 even when the degree that the pen 15 moves is differed with the usage of
 each operator, the input can be precisely determined whether to be carried
 out by the bar touch input or the point touch input, resulting in the
 further improved operational ease.
 The keys 21 to 35 in the key input area 12 are arranged to be maintained
 with the intervals from one another, so that each area of the keys 21 to
 35 is clearly divided, thus avoiding an error operation, for example, the
 input carried out across two keys of the keys 21 to 35. Especially, when
 the pen touches on a spacing part between two keys of the keys 21 to 35,
 the touch input, carried out beyond the spacing part touched with the pen,
 is defined to be canceled, thus surely avoiding the error operation.
 The second embodiment according to the present invention will be explained
 below. Incidentally, in the description of the following embodiment, the
 same reference numerals will be used to designate the same or similar
 components as those in the first embodiment, so that the description will
 be omitted or simplified.
 In the embodiment, the different point from the first embodiment is that a
 mode key area 40 and a function key area 50 are newly provided in the key
 input area 12, in addition to the main key are 20. Therefore, the
 explanation as to the same or similar components as the first embodiment
 will be omitted or simplified.
 As shown in FIG. 9, in the Japanese key arrangement according to the
 embodiment, the mode key area 40 is arranged adjacent to the left side of
 the main key area 20, and the function key area 50 is arranged under the
 main key area 20.
 Here, the arrangement of the keys 21 to 35 in the main key area 20 are the
 same as the Japanese key arrangement of the first embodiment, which is
 shown in FIG. 2.
 The mode key area 40 is vertically aligned therein with three mode keys 41,
 42 and 43.
 The aforementioned mode keys 41, 42 and 43 are provided to define to input
 a digit, a symbol or the like by changing the arrangement of the keys 21
 to 35 from the English and Japanese key arrangements. For example, with
 the selection of the symbol mode key displayed at the bottom half-area of
 the mode key 41, the display on the keys 21 to 35 of the main key area 20
 are respectively changed from alphabets into various symbols, thereby
 various symbols may be inputted by touching each of the keys 21 to 35 with
 the pen 15.
 By selecting the kana mode key displayed at the top half-area of the mode
 key 41, alphabets are displayed on the main key area 20 to be divided into
 two groups of alphabets showing vowels of Japanese and alphabets showing
 consonants, thereby an operator who does not accustom to using the QWERTY
 arrangement may easily input Roman characters or a kana fixing mode,
 converting characters inputted with Roman characters into the form of
 Japanese katakana characters, may be defined.
 By selecting a {character pullout} (English uppercase alphabetic character)
 mode key displayed at the bottom half-area of the mode key 42, all the
 inputted alphabets may be outputted with capital letters, and by selecting
 a {character pullout} (English lowercase alphabetic character) mode key
 displayed at the top half-area of the mode key 42, all the inputted
 alphabets may be outputted with small letters.
 By selecting a digit mode key displayed at the bottom half-area of the mode
 key 43, digits (0 to 9) and arithmetic symbols can be inputted with each
 of the keys 21 to 35 on the main key area 20. And further, by selecting a
 half-sized character mode key displayed at the top half-area of the mode
 key 43, the input on the main key area 20 may be defined to be a
 half-sized character input.
 In other words, the aforementioned mode keys 41 to 43 are used when English
 writing or writing of Japanese katakana characters, which are used for an
 abbreviation, a word of foreign origin or the like in Japanese sentences,
 are inputted or when digits, symbols or the like are inputted.
 Incidentally, a concrete structure of the arrangement as described above
 will be explained in the other embodiment touching upon later.
 Turning to, the function key area 50 is arranged with five function keys 51
 to 55, which are defined with various functions necessary for the Roman
 character input.
 More specifically, a lower-left area of the key 51 is allocated a
 "{character pullout}(conversion)" key carrying out a function for a
 kana-kanji conversion; a lower-right area of the key 51 is a allocated a
 "{character pullout}(space)" key for inputting a space; and the top
 half-area of the key 51 is allocated an "{character pullout}(enhanced
 function)" key defining various enhanced functions for each of the keys 21
 to 35 on the main key area 20. As functions defined by the enhanced
 function key, a move function moving a cursor to the beginning or the end
 of a sentence or a line or the like, and various functions used in a word
 processor or the like for, for example, insert, a ruled line, movement,
 copy, print and so on, are listed.
 The bottom half-area of the key 52 is allocated a "{character
 pullout}(non-conversion)" key carrying out a function for a kana-kanji
 non-conversion, and the top half-area of the key 52 is allocated a
 "{character pullout}(cancel)" key. The bottom half-area of the key 53 is
 allocated a "{character pullout}(back space)" key moving a cursor backward
 (return a cursor to an initial position), and the top half-area of the key
 53 is allocated a "{character pullout}(last conversion-candidate)" key
 showing the last candidates of homophones shown with a list in the
 kana-kanji conversion.
 The bottom half-area of the key 54 is allocated a "{character
 pullout}(delete)" key. And the top half-area of the key 54 is allocated a
 "{character pullout}(single-kanji conversion)" key carrying out a
 single-kanji conversion. The bottom half-area of the key 55 is allocated a
 "{character pullout}(return)" key. And the top half-area of the key 55 is
 allocated a "{character pullout}(menu)" key showing a menu for changing
 the key arrangement into an English key arrangement which will be touched
 upon below.
 Incidentally, the function key 51 has a greater width than the keys 52 to
 55.
 In the aforementioned mode keys 41 to 43 and function keys 51 to 55 as well
 as the main keys 21 to 35, a mode or a function, defined at the top
 hale-area or the bottom half-area of each of the keys 41 to 43 and 51 to
 55, is chosen by using the point touch input and the bar touch input.
 The bottom half-area of the function key 51 is allocated two functions for
 "{character pullout}(conversion)" and "{character pullout}(space)". The
 function key 51 is operated as the "{character pullout}(conversion)" key
 with the point touch before the inputted character is defined by
 converting into a kanji or the like, but the function key 51 is operated
 as the "{character pullout}(space)" key with the point touch after the
 inputted character is defined, in which "{character pullout}(conversion)"
 and "{character pullout}(space)" can be inputted without the change of the
 input operations.
 In the English key arrangement of the embodiment as shown in FIG. 10, the
 mode key area 40 is also arranged adjacent to the left side of the main
 key area 20 and the function key area 50 is arranged under the main key
 area 20.
 The arrangement of the main keys 21 to 35 of the main key area 20 is the
 same as the English key arrangement of the aforementioned first embodiment
 shown in FIG. 3.
 The mode key area 40 has a SYM (SYMBOL) key 41 for changing the main key
 area 20 into a symbol key arrangement, a CAPS key 42 changing the inputted
 mode into one of a capital letter input or a small letter input, and a NUM
 key 43 for changing the main key area 20 into a digit key arrangement.
 The function key area 50 has five keys 51 to 55. The key 51 is allocated a
 "SE" key for inputting a space and a "COMMAND" key for an enhanced
 function, the key 52 is allocated an "ESC" key, the key 53 is allocated a
 "BS" (back space) key, the key 54 is allocated a "DEL" (delete) key and
 the key 55 is allocated a "RETURN" key and a "MENU" key.
 Each of the function keys 51 and 55, respectively defined with the two
 functions, are discriminated by the different input operation between the
 point touch and the bar touch in a similar way of the main keys 21 to 35.
 According to the second embodiment having the key arrangement shown in FIG.
 9 and FIG. 10 as described thus far, the function key area 50 is provided
 with the function keys 51 to 55 allocated various functions, the space key
 and so on, so that various functions, used in the English input or the
 Japanese input, can be respectively carried out by only touching the keys
 51 to 55, resulting in the improved input operational ease.
 Further, owing to the mode key area 40 provided with the mode keys 41 to 43
 for changing the key arrangements of the main key area 20 or the like, the
 input of a digit, a symbol or the like can be efficiently carried out.
 The third embodiment according to the present invention will be explained
 below.
 The embodiment employs a combined arrangement, in which the key areas of
 the main keys 21 to 35 in the main keys area 20 are respectively allocated
 two types of a symbol for the digit key arrangement and a symbol for the
 symbol key arrangement, in addition to alphabets and symbols of a comma, a
 period and so on. Incidentally, the description of the same or similar
 components as those in the first and second embodiments will be omitted or
 simplified.
 In the Japanese combined arrangement in the embodiment as shown in FIG. 11,
 each of symbols of the digit key arrangement and the symbol key
 arrangement are shown on each of the main keys 21 to 35 of the main key
 area 20.
 The bottom left quarter-area of each of the main keys 21 to 35 is allocated
 to show an arithmetic symbol and a digit as the symbol of the digit key
 arrangement, in which each of the keys 21 to 35 is defined with the
 graphic character code showing the symbol for the digit key arrangement as
 the third graphic character code.
 The digit keys are shown in the central three files of the main key area
 20, and the arithmetic symbols are shown in the rightmost file and the
 leftmost file. More specifically, the bottom left quarter-areas of the
 main keys 21 to 35 from the left to right in the top rank of the main key
 area 20 are respectively allocated to show a symbol "-" on the key 21, a
 digit "7" on the key 22, a digit "8" on the key 23, a digit "9" on the key
 24 and a symbol ".div." on the key 25. The bottom left quarter-areas of
 the main keys 21 to 35 from the left in the middle rank are respectively
 allocated a symbol "+" on the key 26, a digit "4" on the key 27, a digit
 "5" on the key 28, a digit "6" on the key 29 and a symbol ".times." on the
 key 30. And further, the bottom left quarter-area of the main keys 21 to
 35 from the left in the bottom rank are respectively allocated to show a
 digit "0" on the key 31, a digit "1" on the key 32, a digit "2" on the key
 33, a digit "3" on the key 34 and a symbol "=" on the key 35.
 The bottom right quarter-areas of each of the main keys 21 to 35 are
 allocated to show various symbols, such as a bracket or the like, for the
 symbol key arrangement, in which each of the keys 21 to 35 is defined with
 the graphic character code for showing each symbol of the symbol key
 arrangement as the fourth graphic character code.
 More specifically, the bottom right quarter-areas of the main keys 21 to 35
 from the left to the right in the top rank of the main key area 20 are
 respectively allocated to show a bracket symbol ".left brkt-top." on the
 key 21, a bracket symbol ".right brkt-bot." on the key 22, a colon symbol
 ":" on the key 23, a semicolon symbol ";" on the key 24 and the symbol "/"
 on the key 25. The bottom right quarter-areas of the main keys 21 to 35
 from the left in the middle rank are respectively allocated to show a
 bracket symbol "(" on the key 26, a bracket symbol ")" on the key 27, an
 and symbol "&" on the key 28, a percent symbol "%" on the key 29 and an
 asterisk symbol "*" on the key 30. And further, the bottom right
 quarter-areas of the main keys 21 to 35 from the left in the bottom rank
 are respectively allocated to show a sharp symbol "#" on the key 31, a
 qualifying symbol "@" on the key 32, a comma symbol "," on the key 33, a
 period symbol "." on the key 34 and the symbol ".about." on the key 35.
 The mode keys 41 to 43 and the function keys 51 to 55 are the same as the
 Japanese key arrangement of the second embodiment shown in FIG. 9, so that
 the description will be omitted.
 In the English combined arrangement of the embodiment as shown in FIG. 12,
 the bottom left quarter-areas of the main keys 21 to 35 in the main key
 area 20 are respectively allocated the arithmetic symbols and digits as a
 symbol of the digit key arrangement and the bottom right quarter-areas are
 allocated symbols of the symbol key arrangement, in which the third and
 fourth graphic character codes are defined on each of the keys 21 to 35.
 The digit key arrangement is the same as the Japanese combined arrangement
 of FIG. 11. That is to say, the bottom left quarter-areas of the main keys
 21 to 35 are allocated to show the symbol "-" on the key 21, the digit "7"
 on the key 22, the digit "8" on the key 23, the digit "9" on the key 24,
 the symbol "." on the key 25, the symbol "+" on the key 26, the digit "4"
 on the key 27, the digit "5" on the key 28, the digit "6" on the key 29,
 the symbol ".times." on the key 30, the digit "0" on the key 31, the digit
 "1" on the key 32, the digit "2" on the key 33, the digit "3" on the key
 34 and the symbol "=" on the key 35.
 As to the symbol key arrangement, the symbols used in English are allocated
 instead of the symbols used in Japanese.
 More specifically, the bottom right quarter-areas of the main keys 21 to 35
 from the left to the right in the top rank of the main key area 20 are
 respectively allocated to show a bracket symbol """ on the key 21, a
 bracket symbol """ on the key 22, a bracket symbol "'" on the key 23, a
 dollar symbol "$" on the key 24 and a symbol "/" on the key 25. The bottom
 right quarter-areas of the main keys 21 to 35 from the left in the middle
 rank are respectively allocated to show a bracket symbol "(" on the key
 26, a bracket symbol ")" on the key 27, an and symbol "&" on the key 28, a
 percent symbol "%" on the key 29 and an asterisk symbol "*" on the key 30.
 And further, the bottom right quarter-areas of the main keys 21 to 35 from
 the left in the bottom rank are respectively allocated to show a sharp
 symbol "#" on the key 31, a qualifying symbol "@" on the key 32, a
 qualifying symbol "!" on the key 33, a question symbol "?" on the key 34
 and a symbol ".about." on the key 35.
 The mode keys 41 to 43 and the function keys 51 to 55 are the same as the
 English key arrangement of the second embodiment shown in FIG. 10, so that
 the description will be omitted.
 In the embodiment as described thus far, each of the main keys 21 to 35 are
 allocated four forms of a character, a symbol and a digit, therefore, the
 touch input operations of four types are properly used by the pen 15, and
 the criterion means 73 confirms the difference of the types of the touch
 input operation to input each of the letter (character), the symbol and
 digit, namely, the first to fourth graphic character codes.
 As shown in FIG. 13, the criterion means 73 detects the difference of the
 operations when the pen 15 touches each of the keys 21 to 35, and judges
 that any one of the top left quarter-area (Letter "A" in FIG. 13), the top
 right quarter-area (Letter "B" in FIG. 13), the bottom left quarter-area
 (Letter "C" in FIG. 13) and the bottom right quarter-area (Letter "D" in
 FIG. 13) of each of the keys 21 to 35 is selected.
 Four decision criterion in the touch operation are visually shown, for
 example, in FIG. 14.
 The decision criterion shown in FIG. 14 is that the input operation is
 determined whether every pixels 76 forming the respective keys 21 to 35
 are touched or not. Where 100 pixels 76 are arranged in a grid 10
 lengthwise and 10 widthwise in each display area of the keys, as shown in
 FIG. 141, the criterion means 73 determines to be inputted with the point
 touch when the pen 15 touches the pixels 76 of less than the predetermined
 number of pixels in each display area of the keys 21 to 35, for example,
 one of the pixels 76 in each display area of the keys 21 to 35 or the
 pixels 76 of the initial pixel 76 and at least one of the pixels 76
 positioned around the initial pixel 76 (the pixels 76 illustrated with "+"
 in FIG. 14)(when the pixel is touched with the pointer), and further, the
 criterion means 73 determines, as shown in FIG. 142, to be inputted with
 the bar touch in the horizontal direction when the more than four pixels
 76 aligned in the horizontal direction are touched (when the pixels are
 touched to draw a bar of a hyphen "-").
 As shown in FIG. 143, when the more than four pixels 76 are continuously
 touched from the upper right to the lower left, the criterion means 73
 determines to be inputted with the bar touch in a downward diagonal
 direction to the left, and further, as shown in FIG. 144, when the more
 than four pixels 76 are continuously touched from the upper left to the
 lower right, the criterion means 73 determines to be inputted with the bar
 touch in a downward diagonal direction to the right. The character
 generation means 74 outputs the character allocated each top left
 quarter-area of the keys 21 to 35 (the first graphic character code)
 provided that the criterion means 73 confirms the point touch, the
 character allocated each top right quarter-area of the keys 21 to 35 (the
 second graphic character code) provided that the bar touch in the
 horizontal direction is confirmed, the character allocated each bottom
 left quarter-area of the keys 21 to 35 (the third graphic character code)
 provided that the bar touch in the downward diagonal direction to the left
 is confirmed, and the character allocated each bottom right quarter-area
 of the keys 21 to 35 (the fourth graphic character code) provided that the
 bar touch in the downward diagonal direction to the right is confirmed.
 Each of the bar touches, carried out in the various direction, may be
 discriminated from one another by being determined from the touching
 direction (the moving direction) of the pen 15 based on the period of time
 and the positions of the pixels 76 touched with the pen 15. In the
 embodiment, however, it is needed to be discriminated the bar touches in
 only the three directions of the horizontal direction and the downward
 diagonal directions to the left and the right, so that the bar touch can
 be discriminated with only the positional relation among each of the
 pixels 76 touched with the pen 15, resulting in a disadvantage of a simple
 process.
 According to the embodiment, a digit and a symbol as well as an alphabet
 can be defined on each of the main keys 21 to 35, and further the first to
 fourth graphic character codes defined in each of the keys 21 to 35 can be
 smoothly selected by slightly changing the operations for inputting the
 digit or the symbol with the pen 15. Therefore, in order to input the
 digit or the symbol, a changing input with a shift key or a mode key is
 not needed, resulting in the improved operational ease.
 Especially, in the input of the digit or the symbol little-used in
 sentences mainly inputted with letters, the digit or the symbol can be
 inputted without changing the modes, thus enhancing the operability.
 In the continuous input of the digit the symbol or the like, the main key
 area 20 can be changed into the digit key arrangement or the symbol key
 arrangement by touching the mode keys arranged on the left side of the
 main key area 20.
 Each of the keys 21 to 35 is defined with multiple information of the
 character, the digit, the symbol and so on, so that the number of keys in
 the embodiment can be fewer than an area of arranging a digit key or a
 symbol key are provided in addition to the main keys 21 to 35, therefore,
 the distance moving the pen 15 is decreased and each size of the keys 21
 to 35 is increased, thus further improving the operational ease. The input
 operations of the point touch and the bar touches in the right direction,
 in the downward diagonal direction to the left and in the downward
 diagonal direction to the right, which are carried out with the pen 15,
 are much different from one another, so that an error operation can be
 avoided because the criterion means 73 can simply detect the difference,
 resulting in the infallible input of the characters and the like.
 The digit keys are arranged in the central three files of the main key area
 20 in order of 0 to 9 from the bottom rank like a usual pocket calculator,
 so that the input in a calculating operation can be carried out with the
 same operation as the usual pocket calculator, resulting in the improved
 operational ease.
 The symbol key arrangement, in which the symbols allocated each bottom
 right quarter-area of the keys 21 to 35, is different between the Japanese
 combined arrangement of FIG. 11 and the English combined arrangement of
 FIG. 12, in which the symbols used frequently in the inputs of English and
 Japanese are each arranged, resulting in the improved operational ease in
 the symbol input.
 The fourth embodiment according to the present invention will be explained
 below.
 As shown in FIG. 15, the embodiment employs a screen display key input unit
 80 of a desk-top personal computer, including a main body 81 and a display
 82, and, as the key input means, a mouse 84, which is one example of the
 pointer input means for selectively inputting each of the keys 21 to 35,
 arranged in the key input area 12 shown on the display 82, by moving a
 pointer 83 shown on the display 82, is used.
 In the embodiment, the key arrangement described in the first to third
 embodiments can be opportunely applied, but a selecting method of each of
 the characters, the symbols, the digits and so on is employed with a
 method capable of making the best use with the feature of the mouse 84.
 In other words, when four character information of a character (letter), a
 digit and a symbol are displayed by defining the first to fourth graphic
 character codes on one key like the third embodiment, as shown FIG. 16,
 provided that a left button 84A of the mouse 84 is clicked (an operation
 for pushing the button) while the pointer 83 is placed on the keys 21 to
 35, the criterion means 73 detects the clicking and the character
 generation means 74 outputs a character (the first graphic character code)
 positioned on each top left quarter-area of the keys 21 to 35 (Letter "A"
 in FIG. 16), and provided that a right button 84B of the mouse 84 is
 clicked, the criterion means 73 detects the clicking and the character
 generation means 74 outputs a character (the second graphic character
 code) positioned on each top right quarter-arca of the keys 21 to 35
 (Letter "B" in FIG. 16).
 While the left button 84A or the right button 84B of the mouse 84 is being
 pushed, provided that the pointer 83 is moved in a downward diagonal
 direction to the left (dragging is carried out in the downward diagonal
 direction to the left) in each area of the keys 21 to 35, the character
 generation means 74 outputs a character (the third graphic character code)
 positioned on each bottom left quarter-area of the keys 21 to 35 (Letter
 "C" in FIG. 16), and provided that dragging is carried out in a downward
 diagonal direction to the right, the character generation means 74 outputs
 a character (the fourth graphic character code) positioned on each bottom
 right quarter-area of the keys 21 to 35 (Letter "D" in FIG. 16).
 In the embodiment described thus far, four character information of a
 letter (character), a digit, a symbol and so on can be inputted by
 slightly changing the input operations with the mouse 84, resulting in the
 improved operational ease.
 Furthermore, in the use of the mouse 84, the input of alphabets used
 frequently, namely, the input of each top left quarter-area and each top
 right quarter-area of the keys 21 to 35, can be carried out by clicking
 each of the right and left buttons 84A and 84B, resulting in the great
 improved operational ease.
 Where the key arrangement of the first or second embodiment is employed in
 the embodiment, the input can be changed by only clicking the right or
 left button 84A or 84B.
 In the use of the mouse having only one button, the character input of the
 top right quarter-area, inputted by clicking the right button 84B, is
 carried out by double-clicking the button (pushing the button twice in
 short intervals) or may be carried out by dragging the pointer 83 in the
 horizontal direction like the input with the pen 15.
 FIG. 17 is summary of the input changing method of four forms of the
 character, the digit and the symbol, which is carried out with the pen 15
 and the mouse 84 in the third and fourth embodiments.
 In the first to fourth embodiments described thus far, any one of the
 characters positioned on each left half-area and each right half-area of
 the main keys 21 to 35 is selected by discriminating between the selection
 operations based on a period of time while each of the keys 21 to 35 is
 touched as shown in FIG. 18 instead of the decision criterion with the
 moving distance of the pen 15.
 More specifically, the criterion means 73 can be structured to determine
 that, as shown FIG. 181, the left half-area of any touched key of the keys
 21 to 35 is selected when the predetermined time is longer than the actual
 time while the pen continuously touches (pushes) one of the keys 21 to 35,
 and that, as shown in FIG. 182, the right half-area of the touched key of
 the keys 21 to 35 is selected when the predetermined time is shorter than
 the actual time while the pen 15 touches.
 Even when the decision is carried out by using the touching period of time
 as described above, by slightly changing the touch operation with the pen
 15 like the aforementioned embodiment, two types of the operation can be
 carried out, so that one of the character and the symbol, which are
 defined at the left and right half-areas of each of the keys 21 to 35, is
 selectively inputted with the simple operation, resulting in the improved
 operational ease.
 By structuring to be opportunely adjusted with the time for the criterion
 of the touch by an operator of the input unit 1, although the period of
 the time for pushing is different by the usage of each operator, it is
 precisely determined which character input operation is carried out.
 The input of the four forms of the character, the digit and the symbol like
 the third embodiment can be carried out by defining the touching period of
 time in four stages.
 As shown in FIG. 19, the criterion means 73 determines whether a touched
 pressure is less than a predetermined pressure (FIG. 191) or more than the
 predetermined pressure (FIG. 192) to confirm the difference among the key
 touch operations with the pen 15, thereby the character input operation
 may be selected.
 With dividing each area of the keys 21 to 35 into two areas in the
 horizontal direction or into four areas in the vertical and horizontal
 directions, the criterion means 73 judges which area of the divided areas
 is touched, thereby the character input operation may be selected.
 As the touch input means, instead of the pen input means carried out by
 using the pen 15, as shown in FIG. 20, a touch screen input means, in
 which a finger or the like touches the key input area on a screen 91, may
 be employed.
 Incidentally, as means for confirming the touch of the pen 15 or a finger
 in the touch input means, various means of an electrostatic capacity type,
 an optical type, a resistance type or the like can be used in response to
 a type of the screen, therefore, the aforementioned touch input means may
 be opportunely selected in response to the confirming means.
 As the key input means is not limited to use the touch input means carried
 out by using the pen 15 or a touch screen, but may be used with the
 pointer input means carried out by using the mouse 84.
 As the pointer input means, as shown in FIG. 21, a tablet input means, in
 which a pointer 98 shown on a screen 97 is moved by touching a pad 95 with
 a pen 96, may be used. And further, various input units, which has a
 button or a function corresponding to the button, and which is capable of
 moving the pointer shown on the screen, can be used. For example, a
 trackball having similar functions to the mouse 84, a pad type operated by
 being touched on the pad with a finger, a joystick, a control pad for a
 game machine, and so on.
 Here, where more than three buttons are provided, the pointer input means
 can be defined to input the characters and the like with the button
 operation instead of the dragging operation. For example, where the three
 buttons are provided, insofar as the four forms of the character, the
 digit, the symbol and so on are defined on each of the keys 21 to 35 as
 described in the third embodiment, the character, the digit and so on,
 positioned on the top left quarter-area, the top right quarter-area and
 the bottom left quarter-area of each of the keys 21 to 35, are inputted by
 using each button click, and the symbol positioned on the bottom right
 quarter-area can be inputted by using the dragging operation.
 Where more than four buttons are provided as the control pad of the game
 machine, the pointer input means may be defined to input the character,
 the digit, the symbol and so on, positioned on the top left and right
 quarter-areas and the bottom left right quarter-areas of each of the keys
 21 to 35, by pushing each button without the dragging operation.
 By increasing the character and the like inputted with only the clicking
 operation by increasing the number of buttons as described above, the
 input operation can be carried out easier and with more certain
 discrimination than the input operation including the dragging operation,
 and the criterion means 73 can smoothly determine the input, with the
 result that the key input unit can be provided at small cost.
 The aforementioned embodiment is structured to show the character and the
 like of two or four forms on each of the keys 21 to 35, but may be
 structured to input by showing the character and the like of more than
 three or more than five forms.
 When the characters and the like of more than five forms are displayed, the
 moving direction of the pen 15 or the like may be determined in the touch
 input means with the pen 15 or the like. For example, the input operation
 is defined to be five types to be determined with the point touch and with
 the four movements in upward, downward, rightward and leftward directions
 or in upward and downward diagonal directions to the left and the right.
 As another example, the input operation can be defined to be nine types to
 be determined with the point touch and with the eight movements in the
 upward, downward, rightward, leftward directions and in the upward and
 downward diagonal directions to the left and the right.
 In the use of the point input means with the mouse and the like, the input
 operation may be defined to be more than five types by changing the button
 operations, caused by double-clicking and the like, in addition to the
 clicking of each button or by defining the dragging direction to be
 maximum eight movements in the upward, downward, rightward, leftward
 directions and the upward and downward diagonal directions to the left and
 the right as in the case of the use of the pen 15.
 Owing to a practical realization of the input operation of more than five
 types as described above, the larger number of characters, digits, symbols
 and so on can be defined on each of the keys 21 to 35, resulting in the
 further improved operational ease.
 In the keys 21 to 35 of the main key area 20, the form and the arrangement
 of the symbols or the digits excepting alphabets are not limited to the
 aforementioned embodiments, but, for example, the character, the symbol or
 the like, used frequently, can be opportunely defined in dependence upon
 the sort of the used languages.
 The digit keys are arranged in the central three files in the third
 embodiment, but can be arranged in the three files from the leftmost file
 or the rightmost file. Further, the digit key arrangement may be arranged
 in order 1-9, 0 from the top rank in correspondence to an arrangement on a
 telephone. Especially, when a telephonic function is incorporated with a
 portable remote terminal or the like, the telephonic operational ease can
 be improved by using the aforementioned telephonic arrangement.
 When the present invention is applied to a data input unit for an
 information machine or a game machine using a television as a screen, a
 channel arrangement for the channel of television is displayed on the main
 keys 21 to 35 shown on the television screen, thereby the channel changing
 operation may be carried out with the screen display key input unit of the
 present invention.
 In the aforementioned embodiments, another operation as the key input
 operation, in which each of the main keys 21 to 35 are touched, can be
 defined in addition to the aforementioned key input operation, thereby
 various functions may be performed.
 For example, provided that the pen or the finger touches on each key area
 of the main keys 21 to 35 to shape "V" or the dragging with the mouse
 shapes "V", an alphabet positioned on the left half-area is directly
 inputted with a capital letter, and provided that the touch or the
 dragging is carried out to shape "opposite V", an alphabet positioned on
 the right half-area is directly inputted in a capital letter.
 According to the aforementioned structure, it is easy to input an
 abbreviation and a proper noun, such as TV, VAN, NTT and so on, used in
 Japanese sentences or an alphabetic capital letter partially used in
 English sentences, such as the initial letters of a sentence, a proper
 noun and so on.
 The fifth embodiment according to the present invention will be explained
 below with reference to the attached drawings.
 A screen display key input unit 101 in the fifth embodiment according to
 the present invention is illustrated in FIG. 22. The screen display key
 input unit 101 has a main body 2 provided with a liquid crystal display 3,
 a push-button 4 and a shift key 5 to be used as a portable remote
 terminal. The display 3 may be protected by a cover pivotally move with
 reference to the main body 2.
 The liquid crystal display 3 has a data display area 10 to input characters
 and display data when the screen display key input unit 1 is used to
 operate word processor, spreadsheet, address book, electric mail or
 schedule function. The actual graphic format in the data display area 10
 may be arranged based on the function in operation.
 There is a selection menu 11 and a key input area 12 at a lower portion of
 the data display area 10. The selection menu 11 and the key input area 12
 may be constantly displayed. But, in view of operability of the unit, it
 is preferable to pop up the selection menu 11 and the key input area 12
 until using almost all of the data area 10 by designing the screen to have
 a key displaying menu and a key starting input operation.
 The screen display key input unit 101 is further provided with a pen 15 as
 a touch means as shown in FIG. 22. The pen 15 may be held by a holder
 optionally provided to the main body, so that the pen 15 shall not be
 lost.
 The actual operation of the screen display key input unit 101 is so carried
 out that the main body is taken by the left hand or put on a table and the
 pen 15 is hold by the right hand.
 The details of the key input area 12 is depicted in FIG. 23 in which there
 are a main key area 20, a change key area 40, a function key area 50 and
 an input line 60 showing inputted characters.
 The aforementioned selection menu 11 has four menu keys of a standard key
 arrangement menu key 16 changing the definition of the main key area 20,
 the change key area 40 and the function key area 50 in the key input area
 12 into a standard key arrangement, a high-speed arrangement menu key 17
 changing the key areas 20, 40 and 50 in the key input area 12 into a
 high-speed arrangement, an English menu key 18 changing the key areas 20,
 40 and 50 into a QWERTY English key arrangement, and a Japanese menu key
 19 changing the key areas 20, 40 and 50 into a QWERTY Japanese key
 arrangement. The menu changing the key arrangements is structured with a
 hierarchized structure as shown in FIG. 24.
 As to the standard key arrangement shown in FIG. 23, the fifteen main keys
 21 to 35 are arranged in three ranks and five files in the main key area
 20. Three change keys 41 to 43 are arranged in the change key area 40. And
 six function keys 51 to 56 are arranged in the function key area 50. As a
 result, the main key area 20 is arranged with 24 keys (soft-keys) in four
 ranks and six files, including the change keys 41 to 43 and the function
 keys 51 to 56.
 The character key arrangement of the main key area 20 in the standard key
 arrangement is arranged in consideration of the used frequency of vowel
 and consonant of alphabets in the Roman character input, the easily
 memorized key positions, and the input efficiency with the pen 15. More
 specifically, the vowel key area and the consonant key area are arranged
 to be separated from each other in order to easily memorize the key
 arrangement. Further, in order to decrease the degree that the pen 15 is
 moved, the central portion of the main key area 20 is the best basic
 position of the pen, so that the vowel keys and the consonant keys are
 arranged in order of the used frequency, namely in order of easily typing,
 from the middle rank, the top rank and the bottom rank, and the keys
 arranged in each rank are arranged from the center toward the outside in
 the same reason.
 Concretely, an area, composed of the keys arranged in the two files from
 one side of the main key area 20 (from the left side in the drawing), is
 defined as a vowel key area 20A for inputting the vowel, and an area,
 composed of the keys arranged in the other three files of the main key
 area 20, is defined as a consonant key area 20B for inputting the
 consonant.
 As described below, each of the key 21, 22, 26, 27, 31 and 32 of the vowel
 key area 20A are allocated "A", "I", "U", "E", and "O" as the vowel sound
 and "{character pullout}n)" as the syllabic nasal.
 In the vowel keys, the keys 27 and 26 arranged in the middle rank are
 respectively allocated to input letters "A" and "I". The keys 22 and 21
 arranged in the top rank are respectively allocated to input letters U"
 and "E". And the keys 32 and 31 are arranged in the bottom rank are
 allocated to input a letter "O" and the syllabic nasal character
 "{character pullout}n)".
 Therefore, a letter "A" used frequently is allocated the key 27, arranged
 in the middle rank and adjacent to the center of the main key area 20, and
 a letter "1" is allocated the key 26 adjacent to the key 27, thus
 enhancing the operational ease. Further, each of the keys "A", "I", "U",
 "E" and "O" are arranged in order of operability from the middle rank to
 the top rank and then the bottom rank. Thereby allowing the positions of
 the characters to be easily memorized.
 Turning to the consonant key area 20B of the right three files are arranged
 with the consonant keys "K", "S", "T", "N", "H", "M", "N", "R" and "W"
 which show the consonant sound of Japanese. More concretely, the keys 28,
 29 and 30 from the left to the right in the middle rank are respectively
 allocated to input "K", "S" and "T". The keys 23, 24 and 25 from the left
 to the right in the top rank are allocated to input "N", "H" and "M". And
 the keys 33, 34 and 35 from the left to the right in the bottom rank are
 allocated to input "Y", "R" and "W". The aforementioned arrangement is
 considered that the consonant sounds in "Ka", "Sa", "Ta", "Na", "Ha",
 "Ma", "Ya", "Ra" and "Wa" groups of the Japanese syllabary are arranged in
 order of syllables to start from the middle rank to the top rank and then
 the bottom rank, and further from the left to the right in each rank.
 The consonant key arrangement as well as the vowel key arrangement is
 arranged in consideration of easy typing, the used frequency of alphabets
 in the Roman character, the easily memorized key positions.
 The aforementioned characters are defined as the first graphic character
 code in each of the keys 21 to 35.
 Incidentally, in the shift state of the consonant key (as will be touched
 upon below, each key of the main key area 20 is operated with the shift
 operation by the shift input means 71, in which the second graphic
 character code is defined in each of the keys.), one of Japanese
 Punctuation Mark "{character pullout}", another Japanese Punctuation Mark
 "{character pullout}", a long vowel mark "{character pullout}", a double
 consonant character "{character pullout}", and further "P", "B", "G", "Z"
 and "D" which form the p-sound in the kana syllabary and the voiced sound
 by combining the vowel are allocated.
 More specifically, the respective keys 23, 24 and 25 in the top rank,
 allocated "N", "H" and "M", are allocated to input "P", "B" and
 "{character pullout}". The respective keys 28, 29 and 30 in the middle
 rank, allocated "K", "S" and "T", are allocated to input "G", "Z" and "D".
 And the respective keys 33, 34 and 35 in the bottom rank, allocated "Y",
 "R" and "W", are allocated to input one of Japanese Punctuation Mark
 "{character pullout}", another Japanese Punctuation Mark "{character
 pullout}", a long vowel mark "{character pullout}".
 Turning to three keys 41, 42 and 43 of the change key area 40 are allocated
 change keys for changing each key in the main key area 20 from the
 standard key arrangement shown in FIG. 23 into an English key arrangement,
 a digit key arrangement and a symbol key arrangement respectively shown in
 FIG. 25 to FIG. 27. More specifically, provided that the English change
 key ("{character pullout}capital letter)") 42 is touched with the pen 15,
 the arrangement is changed into the English key arrangement for inputting
 English capital letters as shown in FIG. 25. Provided that the digit
 change key ("{character pullout}digit)") 43 is touched, the arrangement is
 changed into the digit key arrangement for inputting digits as shown in
 FIG. 26. And provided that the symbol change key ("{character
 pullout}symbol)") 41 is touched, the arrangement is changed into the
 symbol key arrangement for inputting symbols as shown in FIG. 27.
 Therefore, menu for changing the key arrangements is structured in a
 hierarchized structure as shown in FIG. 24, in which the standard key
 arrangement menu and the three arrangements menu, each changed from the
 standard key arrangement by touching the change keys 41 to 43, are defined
 under the standard key arrangement menu in the selection menu 11.
 Incidentally, in each of the English key arrangement, the digit key
 arrangement and the symbol key arrangement, the inputted character, digit
 and symbol is basically shown in full-sized character, but when it is
 needed to basically input in half-sized character, each of the keys 41 to
 43 are touched by being changed into a shift state ("{character
 pullout}half-sized character)") by using the shift input means. Here, the
 key for "{character pullout}(the half-sized character)" is positioned on
 each shifted position of the keys 41 to 43 for changing into the symbol,
 English and digit arrangements, so that there is a disadvantage of the
 operational ease of the input with the half-sized characters.
 The keys 51 to 56 of the function key area 50 are defined with various
 functions necessary for the input with Roman character.
 More specifically, the key 51 is allocated "{character
 pullout}(conversion)" key carrying out a function of a kana-kanji
 conversion, and the key 52 is allocated a "{character
 pullout}(non-conversion)" key carrying out a function of a kana-kanji
 non-conversion. The key 53 is allocated a "{character pullout}(space)" key
 for inputting a space. The key 54 is allocated a "{character
 pullout}(return)" key. The key 55 is allocated an "{character
 pullout}(enter)" key for sending a character string defined in the input
 line 60 to the data display area 10. And the key 56 is allocated a
 "{character pullout}(back space)" key for moving a cursor shown in the
 input line 60 backward (return the cursor to the original position).
 In the shift state, the keys 51 to 56 are respectively allocated a
 "{character pullout}(last conversion-candidate)" key for showing the last
 conversion-candidate of a list of homophones displayed in the kana-kanji
 conversion, a "{character pullout}(kana)" key for carrying out a katakana
 conversion, a "{character pullout}(half-sized character)" key for
 converting to the character or the like of the half-size, a "{character
 pullout}(small letter)" key for converting alphabets to small letters, a
 "{character pullout}(cancel)" key for canceling the input or conversion
 operation, and a "{character pullout}(delete)" key.
 The following is explanations as to the key arrangements of the main key
 area 20, the change key area 40 and the function key area 50 in the
 English key arrangement shown in FIG. 25.
 As to the main key area 20 in the English key arrangement, the vowel area
 20A arranged in the left two files are respectively allocated letters "A"
 and "I" on the keys 27 and 26 in the middle rank, letters "U" and "E" on
 the keys 22 and 21 in the top rank, and letters "O" and "X" on the keys 32
 and 31 in the bottom rank as the first graphic character code in the same
 way as the standard arrangement.
 In the consonant area 20B of the non-shift state (as the first graphic
 character code), the keys 28 and 29 from the left to the right in the
 middle rank are respectively allocated to input letters "K", "S" and "T".
 The keys 23, 24 and 25 from the left to the right in the top rank are
 respectively allocated to input letters "N", "H" and "M". And the keys 33,
 34 and 35 from the left to the right in the bottom rank are respectively
 allocated to input letters "Y", "R" and "W".
 As for the keys of the main key area 20 in the shift sate (the second
 graphic character code), the keys from the left to the right in the top
 rank are respectively allocated to show a hyphen symbol "-" on the key 21,
 an apostrophe "'" on the key 22, a letter "P" on the key 23, a letter "B"
 on the key 24 and a letter "L" on the key 25. The keys from the left to
 the right in the middle rank are respectively allocated to input a period
 "." on the key 26, a comma "," on the key 27, a letter "G" on the key 28,
 a letter "Z" on the key 29, and a letter "D" on the key 30. Further, the
 keys from the left to the right in the bottom rank are respectively
 allocated to input a letter "J" on the key 31, a letter "Q" on the key 32,
 a letter "F" on the key 33, a letter "V" on the key 34 and a letter "C" on
 the key 35.
 Turning to the change key area 40 are the same as the standard key
 arrangement, in which being provided with the symbol change key 41, the
 English change key 42 and the digit change key 43.
 The function key area 50 is provided with the five keys 51, and 53 to 56.
 The keys 54, 55 and 56 are the same as the standard key arrangement. But
 the key 51 is defined as a "{character pullout}(remove)" key for returning
 to the standard key arrangement, and the key 53 is defined as only the
 "{character pullout}(space)" key.
 The following is explanations as to the main key area 20, the change key
 area 40 and the function key area 50 in the digit key arrangement shown in
 FIG. 26.
 The digit keys are arranged on the left three files of the main key area
 20, and the other two files on the right are allocated to input the
 arithmetic symbols. More specifically, in the main key area 20 as the
 first graphic character code, the keys from the left to the right in the
 top rank are respectively allocated to input a digit "7" on the key 21, a
 digit "8" on the key 22, a digit "9" on the key 23, a symbol ".times." on
 the key 24 and a symbol ".div." on the key 25. The keys from the left to
 the right in the middle rank are respectively allocated to input a digit
 "4" on the key 26, a digit "5" on the key 27, a digit "6" on the key 28,
 the symbol "+" on the key 29, and a symbol "-" on the key 30. And, the
 keys from the left to the right in the bottom rank are respectively
 allocated to input a digit "1" on the key 31, a digit "2" on the key 32, a
 digit "3" on the key 33, a symbol "." on the key 34 and a symbol "=" on
 the key 35.
 The keys 24, 25, 29, 30, 34 and 35 in the shift state (in the second
 graphic character code) are respectively allocated a symbol "%", a symbol
 "/", a colon ":", a semi-colon ";", a comma ",", and a symbol ".about.".
 The three keys 41, 42 and 43 of the change key area 40 are the same as the
 standard key arrangement, in which the symbol change key 41, the English
 change key 42 and the digit change key 43 are provided.
 Turning to the function key area 50 is defined with five keys 51 and 53 to
 56. The keys 55 and 56 are the same as the standard key arrangement and
 the English key arrangement. But, the key 51 is allocated a "{character
 pullout}(remove)" key for returning from the digit key arrangement to the
 standard key arrangement in the same way as the English key arrangement.
 The key 53 is allocated a digit "0" in the non-shift state and a
 "{character pullout}(space)" key in the shift state. But the key 54 is
 allocated only a "{character pullout}(return)" key.
 The following is explanation as to the symbol key arrangement of the main
 key are 20, the change key area 40 and the function key area 50 as shown
 in FIG. 27.
 Various brackets symbols are arranged in the left two files of the main key
 area 20, and the other symbols are arranged in the right three files. More
 specifically, as the first graphic character code, the keys from the left
 to the right in the top rank of the main key area 20 is respectively
 allocated to input a bracket symbol """ on the key 21, a bracket symbol
 """ on the key 22, an asterisk symbol "*" on the key 23, a sharp symbol
 "#" on the key 24, and an and symbol "&" on the key 25. The keys from the
 left to the right in the middle rank are respectively allocated to input a
 bracket symbol ".left brkt-top." on the key 26, a bracket symbol ".right
 brkt-bot." on the key 27, a dot symbol "." on the key 28, a colon symbol
 ":" on the key 29, a semi-colon symbol ";" on the key 30. Further, the
 keys from the left to the right in the bottom rank are respectively
 allocated to input a bracket symbol "(" on the key 31, a bracket symbol
 ")" on the key 32, a question symbol "?" on the key 33, a qualifying
 symbol "!" on the key 34 and a symbol "/" on the key 35.
 And in the shift state (in the second graphic character code), the keys
 from the left to the right in the top rank of the main key area 20 are
 allocated to input a bracket symbol "`" on the key 21, a bracket symbol
 "`" on the key 22, a qualifying symbol "@" on the key 23, an arrow symbol
 ".fwdarw." on the key 24, and an arrow symbol ".rarw." on the key 25. The
 keys from the left to the right in the middle rank are respectively
 allocated to input a bracket symbol "&lt;" on the key 26, a bracket symbol
 "&gt;" on the key 27, a dots symbol ".." on the key 28, a dots symbol ". . .
 " in the key 29, and a symbol ".about." on the key 30. Further, the keys
 from the left to the right in the bottom rank are respectively allocated
 to input a bracket symbol "[" on the key 31, a bracket symbol "]" on the
 key 32, a dollar symbol "$" on the key 33, an yen symbol ".Yen." on the
 key 34 and a qualifying symbol ".sctn." on the key 35.
 Turning to the three keys 41, 42 and 43 of the change key area 40 are the
 same as 15 the standard key arrangement, in which the symbol change key
 41, the English change key 42 and the digit change key 43 are provided.
 The function key area 50 is defined with the five keys 51 and 53 to 56. The
 keys 51 and 54 to 56 are the same as the digit key arrangement. But the
 key 53 is allocated to input a "{character pullout}(picture symbol)" key
 for displaying various picture symbols on each of the main keys 21 to 35
 or the opportune pop-up area in the shift sate, and to input a "{character
 pullout}(next candidate)" key displaying a list of the next candidate of
 the displayed picture symbols in the non-shift state.
 The following is explanation as to the key arrangements of the main key
 area 20, the change key area 40 and the function key area 50 in the
 high-speed key arrangement changed with the selection menu key 17 as shown
 in FIG. 28. The high-speed key arrangement is similar to the standard key
 arrangement shown in FIG. 23, but some keys are defined for inputting at
 high-speed.
 Concretely, each of the keys 21, 22, 26, 27, 31 and 32 of the vowel area
 20A are allocated characters "A", "U", "E", "O" and "{character
 pullout}n)" as the first graphic character code like the standard key
 arrangement, but allocated double vowels "AI", "UI", "UU", "EI", "OU" and
 "YUU" in the shift state (in the second graphic character code) of the
 keys in order to input at high-speed. More specifically, the vowel keys 27
 and 26 arranged in the middle rank are respectively allocated to input
 double vowels "AI" and "UI" in the shift state. The keys 22 and 21
 arranged in the top rank are respectively allocated to input double vowels
 "UU" and "EI" in the shift state. And the keys 32 and 31 arranged in the
 bottom rank are respectively allocated to input double vowels "OU" and
 "YUU" in the shift state.
 Further, the consonant area 20B arranged in the right three files are
 provided with the consonant keys of letters "K", "S", "T", "N", "H", "M",
 "Y, "R" and "W" forming consonant sound of Japanese like the standard key
 arrangement. More specifically, the keys 28, 29 and 30 from the left to
 the right in the middle rank are respectively allocated letters "K", "S"
 and "T". The keys 23, 24 and 25 from the left to the right in the top rank
 are respectively allocated letters "N", "H" and "M". And the keys 33, 34
 and 35 from the left to the right in the bottom rank are respectively
 allocated letters "Y", "R" and "W".
 The consonant key arrangement in the shift state (in the second graphic
 character) is the same as the standard key arrangement. That is to say,
 the keys 23, 24 and 25 in the top rank, which are allocated letters "N",
 "H" and "M" in the first graphic character code, are allocated characters
 "P", "B" and "{character pullout}". The keys 28, 29 and 30 in the middle
 rank, which are allocated letters "K", "S" and "T", are allocated letters
 "G", "Z" and "D". And the keys 33, 34 and 35 in the bottom rank, which are
 allocated letters "Y, "R" and "W", are allocated one of Japanese
 Punctuation Mark "{character pullout}", another Japanese Punctuation Mark
 "{character pullout}", and a long vowel mark "{character pullout}".
 The keys 33 and 34 in the shift state are respectively allocated letters
 "F" and "V" as the second shift sate (as the third graphic character
 code).
 Turning to the three keys 41, 42 and 43 on the change key area 40 are
 usually the same as the standard key arrangement, in which the symbol
 change key 41, the English change key 42 and the digit change key 43 are
 provided, but, provided that any one of the keys in the main key area 20
 is touched, the keys 41, 42 and 43 are changed to be defined as the first
 graphic character code to respectively input characters "{character
 pullout}(tu)" and "{character pullout}(ku)" and a double consonant
 character "{character pullout}(ttu)", and further, in the shift state (in
 the second graphic character code), the keys 41, 42 and 43 are
 respectively allocated to input characters "{character pullout}(ti)",
 "{character pullout}(ki)" and "YOU". Therefore, in the high-speed
 arrangement, the change keys 41 to 43 are operated as sub-keys also.
 The function key area 50 is provided with the six keys 51 to 56 defined the
 same functions as the standard key arrangement.
 The aforementioned high-speed arrangement is structured to be able to
 input, especially, Japanese double vowels "AI", "UI", "UU", "EI", "UO",
 "YUU", "YOU", and
 ##STR1##
 by touching only one key at a time, thus achieving the input at high-speed.
 In other words, the aforementioned double vowel, palatalized syllable and
 ##STR2##
 are frequently used in Japanese, especially, in kanji read by using Chinese
 style, so that the number of touches are reduced by inputting to touch
 once each of the characters which are inputted by touching twice to three
 times in general, thus improving the inputting efficiency. Table 1 shows a
 comparative example of the number of touches among a conventional kana
 input in the use of Japanese syllabary, a conventional Roman character
 input in the use of the QWERTY arrangement and the high-speed arrangement.
 TABLE 1
 COMISON OF THE NUMBER OF TOUCHES
 IN THE PEN INPUT
 QWERTY High-speed
 Example Japanse syllabary arrangement arrangement
 {character pullout} {character pullout}(vc){character pullout} 5 KEIZAI
 6 KEIZAI 4
 (keizai)
 {character pullout} {character pullout}(sc){character pullout} 6 RYUUTUU
 7 RYUUTUU 4
 (ryutu)
 {character pullout} {character pullout}(vc)(sc){character pullout} 7
 JOUHOU 6 ZYOUHOU 4
 (joho)
 {character pullout} {character pullout}(sc) {character pullout}(sc)
 {character pullout} 9 SHUPPANN 8 SYU{character
 pullout}PA{character pullout} 7
 (shuppan) (vc)(vc){character pullout}
 {character pullout} {character pullout}(vc){character
 pullout}(sc){character pullout} 7 JITURYOKU 9 ZI{character
 pullout}RYO{character pullout} 7
 (jituryoku)
 NOTE 1: (vc) in Japanese syllabary means to input a voiced consonant key.
 NOTE 2: (sc) in Japanese syllabary means to input shift of a small
 character.
 As know from Table 1, with the use of the high-speed arrangement of FIG.
 28, a double vowel or a palatalized syllable can be inputted by touching
 only one key at a time, so that the number of touches (each numeral shown
 in Table 1) can be reduced as compared with the kana input or the Roman
 character input, thereby allowing the effect to be enhanced in sentences
 written with, especially, characters read with Chinese style.
 Further, the high-speed arrangement is designed to move the flow of the
 character input from the right to the left in due order. That is to say,
 the touched order is started from a consonant arranged in the right side,
 to a vowel or a double vowel arranged in the left side of the consonant
 keys, and then one of the second syllable
 ##STR3##
 arranged in the left side of the vowel or the double vowel keys, thus
 cutting waste of the movement of hands, and improving the operational
 ease. The high-speed arrangement is structured in consideration of the
 characteristics of Japanese in that the second syllable of kanji read
 Chinese style and formed with two syllables is always any one of
 ##STR4##
 except a case the second syllable is vowel sound, that is to say, it is
 strong possibility to be inputted with
 ##STR5##
 after the first syllable (a consonant sound+a vowel sound), resulting in
 the effective arrangement for the input of Japanese.
 The following is examples of kanji including the aforementioned characters.
 1) an example of kanji forming "I" in the second syllable (an example of
 kanji including any one of double vowels "AI, UI, and EI").

{character pullout} (I{character pullout} NI{character
 pullout}) {character pullout} (KI{character pullout} ZI{character
 pullout})
 {character pullout} (SI{character pullout} ZI{character
 pullout}) {character pullout} (SE{character pullout} ZI{character
 pullout})
 {character pullout} (I{character pullout} NI{character
 pullout}) {character pullout} (KA{character pullout} PA{character
 pullout})
 {character pullout} (ZI{character pullout} SI{character
 pullout}) {character pullout} (SYU{character pullout} PA{character
 pullout})
 The following is explanation of the key arrangements of the main key area
 20, the change key area 40 and the function key area 50 in the QWERTY
 English key arrangement changed with the selection menu key 18 as shown in
 FIG. 29. The QWERTY English key arrangement is designed to be easily
 inputted with English sentences by a person, who is accustomed to using a
 conventional keyboard arranged with the QWERTY arrangement, in which a
 different point from the first embodiment is that each key area of the
 keys 21 to 35 are shown to divide in the horizontal direction in the first
 embodiment, however each key area are shown to divide in the vertical
 direction on each key in the embodiment.
 In the QWERTY English key arrangement, as the first graphic character code,
 the bottom half-areas of the keys from the left to the right in the top
 rank of the main key area 20 are respectively allocated a letter "Y" on
 the key 21, a letter "U" on the key 22, a letter "I" on the key 23, a
 letter "O" on the key 24 and a letter "P" on the key 25. The bottom
 half-areas of the keys from the left in the middle rank are respectively
 allocated a letter "H" on the key 26, a letter "J" on the key 27, a letter
 "K" on the key 28, a letter "L" on the key 29 and a semi-colon ";" on the
 key 30. And, the bottom areas of the keys from the left in the bottom rank
 are respectively allocated a letter "N" on the key 31, a letter "M" on the
 key 32, a comma "," on the key 33, a period "." on the key 34 and a symbol
 "/" on the key 35.
 In the shift state of the main keys (in the second graphic character code),
 the top half-areas of the keys from the left to the right in the top rank
 of the main key area 20 are respectively allocated a letter "Q" on the key
 21, a letter "W" on the key 22, a letter "E" on the key 23, a letter "R"
 on the key 24 and a letter "T" on the key 25. The bottom half-areas of the
 keys from the left in the middle rank are respectively allocated a letter
 "A" on the key 26, a letter "S" on the key 27, a letter "D" on the key 28,
 a letter "F" on the key 29 and a letter "G" on the key 30. And, the bottom
 areas of the keys from the left in the bottom rank are respectively
 allocated a letter "Z" on the key 31, a letter "X" on the key 32, a letter
 "C" on the key 33, a letter "V" on the key 34 and a letter "B" on the key
 35.
 Turning to the chance key area 40 is provided with a SYM (SYMBOL) key 41
 for changing the key arrangement into the symbol key arrangement of FIG.
 27, a CAP key 42 for changing the input mode into any one of a large
 character input and a small character input, and a NUM key 43 for changing
 the key arrangement into the digit key arrangement of FIG. 26.
 The function key area 50 is provided with the four keys 53 to 56. The key
 53 is allocated a "SE" key for inputting a space, the key 54 is
 allocated a "return" key, the key 55 is allocated a "DEL" (delete) key,
 and the key 56 is allocated a "BS" (back space) key.
 The following is explanation of the key arrangements of the main key area
 20, the change key area 40 and the function key area 50 in the QWERTY
 Japanese key arrangement changed with the selection menu key 19 as shown
 in FIG. 30. The QWERTY Japanese key arrangement is designed to be easily
 inputted with Japanese sentences by a person, who is accustomed to using a
 conventional keyboard arranged with the QWERTY arrangement.
 The QWERTY Japanese key arrangement is similar to the QWERTY English key
 arrangement of FIG. 29 from the view of arranging to be based on the
 QWERTY arrangement.
 Concretely, as the first graphic character code of each of the main keys,
 the bottom half-areas of the keys from the left to the right in the top
 rank of the main key area 20 are respectively allocated a letter "Y" on
 the key 21, a letter "U" on the key 22, a letter "I" on the key 23, a
 letter "O" on the key 24 and a letter "P" on the key 25. The bottom
 half-areas of the keys from the left in the middle rank are respectively
 allocated a letter "H" on the key 26, a letter "J" on the key 27, a letter
 "K" on the key 28, a letter "L" on the key 29 and a long vowel mark
 "{character pullout}". And, the bottom half-areas of the keys from the
 left in the bottom rank are respectively allocated a letter "N" on the key
 31, a letter "M" on the key 32, one of Japanese Punctuation Mark
 "{character pullout}" on the key 33, another Japanese Punctuation Mark
 "{character pullout}" on the key 34 and a character "{character pullout}"
 on the key 35.
 In the shift state of the main keys (in the second graphic character code),
 the top half-areas of the keys from the left to the right in the top rank
 of the main key area 20 are respectively allocated a letter "Q" on the key
 21, a letter "W" on the key 22, a letter "E" on the key 23, a letter "R"
 on the key 24 and a letter "T" on the key 25. The bottom half-areas of the
 keys from the left in the middle rank are respectively allocated a letter
 "A" on the key 26, a letter "S" on the key 27, a letter "D" on the key 28,
 a letter "F" on the key 29 and a letter "G" on the key 30. And, the bottom
 areas of the keys from the left in the bottom rank are respectively
 allocated a letter "Z" on the key 31, a letter "X" on the key 32, a letter
 "C" on the key 33, a letter "V" on the key 34 and a letter "B" on the key
 35.
 Incidentally, the three keys 41, 42 and 43 of the change key area 40 and
 the six keys 51 to 56 of the function key area 50 are the same as the
 standard key arrangement.
 An internal processing method in the screen display key input unit 101
 according to the present invention, with the key arrangements as described
 thus far, will be explained hereunder in the light of FIG. 31 and FIG. 32.
 FIG. 31 is a block diagram to visually understand an internal structure in
 the screen display key input unit 101. FIG. 32 is a flow chart actually
 carried out in the unit 101.
 The screen display key input unit 101 consists of an input controller 107,
 a shift input means 171, a process controller 172 and an output controller
 176.
 The input controller 170 senses a touch input by the pen 15 within the
 selection menu 11, the main key area 20, the change key area 40 and the
 function key area 50, which is represented as a Step 1 in the drawing. A
 step will be simply replaced with "S" to shorten a sentence.
 When being touched by the pen 15, the shift input means 171 judges whether
 the touch input is caused by the shift input or not (S2).
 When the shift input is confirmed, the shift input means 171 carries out
 the shift process generating a key code allocated the shift position of
 the touched key (S3), and the generated code is sent to the process
 controller 172. But, when the shift input is not confirmed, the shift
 input means 171 generates a key code allocated the non-shift position of
 the touched key and sends it to the process controller 172.
 The process controller 172 is provided therein with three process means of
 an arrangement change means 173, a key process means 174 and a function
 process means 175, in which the input process is carried out by selecting
 from the three process means in response to the inputted key (S4). For
 example, if the inputted key is any one of the menu keys 16 to 19 of the
 selection menu 11 or any one of the change keys 41 to 43 of the change key
 area 40, the arrangement change means 173 will change the main key area
 20, the change key area 40 or the function key area 50 into the
 arrangement defined by the inputted key.
 Provided that the inputted key is any one of the keys of the main key area
 20, the key process means 174 shows and outputs the inputted key on the
 input line 60 (S4). In addition, where the Roman character input is
 carried out with the standard key arrangement or the like, the key process
 means 174 automatically converts the inputted alphabet into kana (S4).
 Provided the inputted key is any one of the keys of the function key area
 50, the function process means 175 carries out a function defined by the
 inputted key (S4). For example, when the conversion key 51 is touched, a
 character string shown on the input line 60 is converted into kanji and
 defined. When the enter key 54 is touched, the defined character string is
 shown on the data display area 10.
 The output controller 176 carries out a process showing the result of
 process in the process controller 172 on the liquid crystal display 3
 (S5).
 A whole process by one touch input is carried out as aforementioned and
 subsequent inputs are done in the same way.
 The shift input means 171 is used by opportunely selecting from four shift
 input means of push-button shift input means 181, clicking shift input
 means 182, pre-shift shift input means 183, and divided-area shift input
 means 184 as shown in FIG. 33.
 Each of the shift input means 171 will be separately explained below.
 As to the push-button shift input means 181, when the key is touched with
 the pen 15 while a push-button 4, shown in FIG. 22, is being pushed, the
 code (the second graphic character code) of the symbol defined on the
 touched key in the shift state is generated. And, when the key is touched
 while the push-button 4 is not pushed, the code (the first graphic
 character code) of the symbol defined on the touched key in the non-shift
 state is generated.
 As to the clicking shift input means 182, when the key is touched twice
 with the pen 15 in the predetermined period of time, the code (the second
 graphic character code) of the symbol defined on the touched key in the
 shift state is generated. And, when the key is touched once in the
 predetermined period of time, the code (the first graphic character code)
 of the symbol defined on the touched key in the non-shift state is
 generated.
 That is to say, as shown in FIG. 34, the clicking shift input means 182
 confirms the shift state when the pen 15 completely touches on the screen
 twice within the predetermined period of time (1, 2), and confirms the
 non-shift state when the pen 15 touches the screen once within the
 predetermined period of time (3, 4) or when the second touch operation is
 carried out to exceed the predetermined period of time (5).
 As to the pre-shift shift input means 183, when the input mode is defined
 as the shift state by being pushed on the shift key 5 shown in FIG. 22,
 the code (the second graphic character code) of the symbol defined on the
 key, touched with the pen 15, in the shift is generated. And, when the
 input mode is defined as the non-shift state by being pushed on the shift
 key 5 again, the code (the first graphic character code) of the symbol
 defined on the key, touched with the pen 15, in the non-shift state is
 generated.
 The divided-area shift input means 184 includes touched-area criterion
 means 187 for determining whether the pen 15 touches an area 184A or an
 area 184B, when each of the keys is divided, as shown in FIG. 35, into the
 top half-area as the shift area 184A and the bottom half-area as the
 non-shift area 184B. When the touched-area criterion means 187 determines
 that the shift area 184A is touched, the code (the second graphic
 character code) of the symbol defined on the touched key in the shift
 state is generated, and when the touched-area criterion means 187
 determines that the non-shift area 184B is touched, the code (the first
 graphic character code) of the symbol defined on the touched key in the
 non-shift state is generated.
 Incidentally, the divided-area is not limited to be defined by dividing the
 key into the top and bottom half-areas, and the divided area may be
 defined by dividing the key into the right and left half-areas or diagonal
 half-areas, in which it is advisable that the symbol, inputted when each
 of the divided-areas is touched, is shown on the divided-area.
 As the shift input means 171, the purpose is served with defining any one
 of the push-button shift input means 181, the clicking shift input means
 182, the pre-shift shift input means 183, and the divided-area shift input
 means 184, but it may be structured that an operator can appropriately
 select from the defined plural shift input means 171.
 The push-button 4 and the shift key 5 may be not provided on the main body
 2 when the push-button shift input means 181 and the pre-shift shift input
 means 183 are not employed as the shift input means 171.
 In the selection of the high-speed shown in FIG. 28, each of the keys 33
 and 34 are defined with the first and second shift state (the second and
 third graphic character codes), so that it is needed that the shift input
 means 171 is defined with two shift input means of the first and second
 processes differing from each other.
 For example, the push-button shift input means 181 is defined as the first
 shift input means and the clicking shift input means 182 is defined as the
 second shift input means. In this case, for example, when the key 33 or 34
 is touched while the push-button 4 is being pushed, one of Japanese
 Punctuation Mark "{character pullout}" or another Japanese Punctuation
 Mark "{character pullout}" is inputted, and, when the key 33 or 34 is
 touched with the clicking shift input means (the key is touched twice
 within the predetermined period of time), a letter "F" or "V" as the
 second shift state (the third graphic character code) is inputted.
 Effects according to the embodiment described thus far will be explained
 below.
 According to the embodiment, even with only the fifteen main keys 21 to 35,
 at least two keys (the key defined in the shift state and the key defined
 in the non-shift state), namely, the first and second graphic character
 codes can be defined on each of the keys 21 to 35 by using the shift input
 means 171, so that at least 30 keys in total are defined. Therefore, the
 main keys 21 to 35 can be defined with Japanese Punctuation Marks
 "{character pullout}" and "{character pullout}" in addition to 19 letters
 of alphabets, namely vowel letters "A", "I", "U", "E" and "O", used in the
 Roman character input of Japanese, letters "K", "S", "T", "N", "H", "M",
 "Y", "R" and "W" for inputting a voiceless sound from Ka group of Japanese
 syllabary to Wa group formed by combing with the vowel key, and letters
 "G", "Z", "D", "P" and "B" for inputting the voice sound and the p-sound
 in the Japanese kana syllabary formed by combing with the vowel key, thus
 responding the needs in the Japanese input even with the limited number of
 keys.
 Similarly, the main keys 21 to 35 can be defined with a comma "," and a
 period "." in addition to 26 alphabets, thus sufficiently responding the
 needs in the English input.
 As a result, the English input or the Roman character input can be carried
 out with the fifteen main keys 21 to 35 which are the smaller number than
 the keys of the conventional QWERTY arrangement or the conventional
 Japanese syllabary arrangement. Provided that the keys 21 to 35 are shown
 on the screen with the same size as the keys of the conventional QWERTY
 arrangement or Japanese syllabary arrangement, the size of the main key
 area 20 as the key display area can be smaller, thereby allowing the
 moving distance of the pen 15 touching the keys 21 to 35 to be decreased
 and the operability for operators to be improved
 The size of the main key area 20 can be smaller, thereby allowing the
 screen touch input unit 101 to be reduced the physical size thereof, the
 size of the display area for data or the like to be increased, and
 naturally, the handling properties and the operability to be enhanced.
 Provided that the main key area 20 is designed to be size similar to a key
 arranged area of the conventional QWERTY arrangement or the conventional
 Japanese syllabary arrangement, each size of the main keys 21 to 35 can be
 designed to be larger than a conventional key, therefore, each of the keys
 21 to 35 are easily touched with the pen 15 or a finger, resulting in the
 improved operability.
 In the embodiment, the change keys 41 to 43, the menu keys 16 to 19 in the
 selection menu 11 and the arrangement change means 173 are provided, so
 that the arrangement of the main keys 21 to 35 can be changed in seven
 types. Therefore, various arrangements, such as the arrangements for
 alphabet, digit and symbol, the arrangement similar to the conventional
 QWERTY arrangement and so on, can be defined.
 As a result, the arrangement of the graphic character code defined on the
 main keys 21 to 35 can be changed in the seven types of the Japanese Roman
 character key arrangement (the standard arrangement), the English key
 arrangement, the digit key arrangement, the symbol key arrangement, the
 high-speed arrangement, the QWERTY English key arrangement, and the QWERTY
 Japanese key arrangement, so that the keys of 30 keys times the number of
 arrangements can be defined by combining the aforementioned shift input
 means 171 and the arrangement change means 173 even with the fifteen main
 keys 21 to 35, thus easily inputting every characters, digits, symbols and
 so on.
 Further, the arrangements can be changed by only touching each of the menu
 keys 16 to 19 or the change keys 41 to 43, so that Roman character,
 English, digits and so on can be easily inputted by simply changing the
 arrangement of each of the main keys 21 to 35.
 Each of the arrangement change means 173 is structured to change functions
 of each of the function keys 51 to 56 shown on the function key area 50 in
 addition to the arrangements of the main keys 21 to 35, so that the
 function keys 51 to 56 can be defined to be respond to each of the changed
 arrangements, resulting in the improved operability. For example, in the
 English input, the function keys needed in the English input are shown,
 but the function needed in only the Japanese input, such as "{character
 pullout}(kanji conversion)" or the like, is not shown, thereby allowing
 the operability to be further improved.
 In the arrangement for the Roman character input shown in FIG. 23 and FIG.
 28, the keys for vowel sounds and the keys for forming consonant sounds
 are arranged to be respectively divided in the vowel area 20A and the
 consonant area 20B, so that the positions of the frequently used vowel
 keys can be easily acquired in the Japanese Roman character input
 alternately used with a vowel sound and a consonant sound, resulting in
 the enhanced operability.
 Each consonant key for a voiceless sound frequently used in the consonant
 sounds are allocated each non-shift state (the first graphic character
 code) of the keys, so that the frequently used voiceless sounds can be
 inputted without the shift operation, thus improving the operability.
 Furthermore, the keys 27 and 28, which are located adjacent to the center
 of the main key area 20, are respectively allocated letters "A" and "K"
 frequently used in the vowel sounds and the consonant sounds, and vowel
 letters "A", "I", "U", "E" and "O" and consonant letters "K", "S", "T",
 "N", "H", "M", "Y", "R" and "W", namely from Ka group to Wa group in
 Japanese syllabary, are methodically arranged from the keys 27 and 28
 toward the outside and from the middle rank to the top rank and then the
 bottom rank, thereby allowing the key arrangement to be easily acquired,
 and naturally, the operability to be further improved.
 The shift state (the second graphic character code) of the keys, allocated
 letters "K", "S", "T", "N" and "H" in the consonant area, are respectively
 allocated letters "G", "Z", "D", "P" and "B" for inputting the voiced
 sound and the p-sound in Japanese syllabary formed by combining with vowel
 sounds "A", "I", "U", "E" and "O", so that the voiced sounds "{character
 pullout}(Ga)", "{character pullout}(Za)" and "{character pullout}(Da)" are
 respectively arranged to correspond with the input positions of the
 consonant sounds "{character pullout}(Ka)", "{character pullout}(Sa)" and
 "{character pullout}(Ta)", and similarly, the p-sound and the voiced sound
 "{character pullout}(Pa)" and "{character pullout}(Ba)" are respectively
 tJL retroarranged to correspond with the input positions of the consonant
 sounds "{character pullout}(Na)" and "{character pullout}(Ha)", thereby
 allowing the key positions of the voiced sound and the p-sound to be
 easily memorized, and naturally, the operability to be further improved.
 In the standard arrangement for the Roman character input (FIG. 23), the
 high-speed arrangement (FIG. 28) and the QWERTY Japanese key arrangement
 (FIG. 29), the syllabic nasal "{character pullout}(n)", the double
 consonant "{character pullout}(ttu)", one of Japanese Punctuation Mark
 "{character pullout}", 2 isth another Japanese Punctuation Mark
 "{character pullout}" and the long vowel mark "{character pullout}", which
 are frequently used in Japanese sentences, are arranged in a part of the
 arrangement of the main keys 21 to 35, so that the syllabic nasal
 "{character pullout}", the double consonant "{character pullout}", one of
 Japanese Punctuation Mark "{character pullout}", another Japanese
 Punctuation Mark "{character pullout}" and the long vowel mark "{character
 pullout}" can be inputted by pushing only one key--with one touch
 operation, thus enhancing the operational ease. Specially, the syllabic
 nasal "{character pullout}" is defined on the key 35 in the non-shift
 state, so that the syllabic nasal "{character pullout}" frequently used in
 the Japanese input, particularly, kanji read in the Chinese style, can be
 easily inputted.
 Where the main keys are defined as the English key arrangement (FIG. 25 and
 FIG. 29), a comma ",", a period "." and so on frequently used in the
 English input are defined on each of the keys in the shift state and the
 non-shift state, so that a comma, a period and so on can be directly
 inputted with the touch input, resulting in the improved operability in
 the English input.
 The English key arrangement shown in FIG. 25 is in agreement on many keys
 with the standard arrangement shown in FIG. 23, and the QWERTY English key
 arrangement shown in FIG. 29 is in agreement on some keys with the QWERTY
 Japanese key arrangement shown in FIG. 30, therefore, even in the use of
 the combination of the standard arrangement and the English key
 arrangement with the change, the key arrangements can be easily acquired,
 naturally, the operational ease is enhanced.
 As to the digit key arrangement shown in FIG. 26, the keys are arranged
 similar to a numeric keypad of a conventional keyboard, and further,
 various symbols used in calculation can be inputted with the touch input,
 thereby allowing the input of digits or a calculating operation to be
 easily carried out.
 As to the symbol key arrangement shown in FIG. 27, various symbols, which
 are frequently used but hardly inputted, can be inputted with the touch
 input by showing on main keys 21 to 35, thus easily inputting various
 symbols. Respective bracket symbols are defined to be collected on the six
 main keys 21, 22, 26, 27, 31 and 32, arranged in the two files relative to
 the left side, in the shift state and in the non-shift state, so that the
 key positions of the brackets symbols and the other symbols can be easily
 distinguished, thus improving the operability of the input.
 As to the high-speed shown in FIG. 28, in the shift state of each of the
 keys 21, 22, 26, 27, 31 and 32 of the vowel area 20A (the second graphic
 character code), the double vowel and the palatalized syllable "AI", "UI",
 "UU" "EI", "OU" and "YUU", frequently used in Japanese, particularly,
 kanji read in Chinese style, are defined, thereby the double vowel, the
 palatalized syllable and so on can be inputted by pushing only one key,
 resulting in an increase in efficiency of inputting Japanese.
 In the high-speed arrangement, furthermore, in the shift state and the
 non-shift state of each of the keys 41, 42 and 43 normally used as the
 change key, the keys for inputting a character "{character pullout}", a
 character "{character pullout}", a double consonant "{character pullout}",
 a character "{character pullout}", a character "{character pullout}" and
 letters "YOU" are defined, so that characters "{character
 pullout},{character pullout},{character pullout}, {character pullout} and
 {character pullout}", frequently used in the second syllable of a Japanese
 word, especially, a single kanji read in the Chinese style, can be
 inputted with one touch, and further, letters "YOU" included in a word
 with the double vowel, such as "{character pullout}(Tokyo)" (TOUKYOU) and
 so on, can be also inputted with one touch, thus further increasing
 efficiency of inputting.
 The aforementioned keys 41 to 43 are normally used as the definition of the
 change keys 41 to 43 used in the other key arrangements, but, after any
 one of the keys in the main key area 20 is touched, the aforementioned
 keys are changed from the definition as the change keys 41 to 43 into the
 definition for characters "{character pullout},{character
 pullout},{character pullout},{character pullout} and {character pullout}"
 or the like with taking full advantage of characteristic that the keys are
 used at the second syllable of a word, so that the use of the keys 41 to
 43 can be shared by being appropriately changed as necessary, with the
 result that the number of keys can be reduced with no loss of the
 operability.
 Further, as to the high-speed arrangement, in the shift state of the main
 keys 33 and 34, Japanese Punctuation Marks "{character pullout}" and
 "{character pullout}" as the first shift state (the second graphic
 character code) and letters "F" and "V" as the second shift state (the
 third graphic character code) are defined, so that it is easy to input
 letters "F" and "V", used when "{character pullout}(F+A)" and "{character
 pullout}(V+A)" as a special palatalized syllable frequently used in the
 input of Japanese katakana, thus especially improving the operability in
 the input of Japanese katakana.
 As to the QWERTY English key arrangement and the QWERTY Japanese key
 arrangement shown in FIG. 29 and FIG. 30, the fifteen main keys are
 defined with the use of the key order of the conventional QWERTY
 arrangement widely accustomed, so that it is easy for a person who
 accustoms to using the conventional QWERTY arrangement to memorize the
 positions of the keys, resulting in the instantaneous use.
 As to the shift input means 171, especially, with the use of the clicking
 shift input means 182 and the divided-area shift input means 184, the
 shift input and the non-shift input can be appropriately used by slightly
 changing the methods for inputting with the pen 15, thus enhancing the
 operability.
 With the use of the clicking shift input means 182, the shift operation can
 be carried out by touching one key twice within the predetermined time, so
 that the operation similar to the double clicking of the mouse is enabled,
 resulting in the adaptable operation.
 At this time, the time for determining which touch input is carried out is
 appropriately adjusted by an operator of the input unit 1, thereby the
 difference between touching one key once and twice, namely, the shift
 operation or not, can be accurately determined even when the intervals
 from the first touch to the second touch is differed by each of the
 operator.
 With the use of the divided-area shift input means 184, the shift operation
 can be carried out by changing the areas touching with the pen 15,
 resulting in the improved operability.
 In this case, each of symbols, defined on each of the main keys 21 to 35 in
 the shift state and the non-shift state, is shown on the each of the shift
 areas 84A and the non-shift areas 84B, and each of the symbols (the first
 and second graphic character codes) can be inputted with the intuitive
 operation which the area 84A or 84B, namely a part of the inputted symbol
 is directly touched, resulting in the accessible operation and a high
 degree of operability.
 In the push-button shift input means 181 and the pre-shift shift input
 means 183, the shift is changed by touching the key with the pen 15 while
 the push-button 4 is being pushed or after the shift key 5 is pushed, so
 that the operation is plainly carried out without paying attention to
 touch with the pen 15, with the result that an operator, particularly, a
 person who does not have good finger coordination, sometimes operates the
 above operation more easily than the shift operation having the different
 touching manners for changing shifts.
 Further, in the pre-shift shift input means 183, where the key having
 plural shift states is continuously inputted, the shift operation in the
 key touch is not needed after the shift state is previously defined,
 thereby allowing efficiency of inputting to be increased.
 In the aforementioned embodiment, each of the keys in the key input area 12
 are arranged to be separated from one another, so that each area of the
 keys are clearly divided, resulting in avoidance of an error operation
 which the two keys are simultaneously inputted in the touch input with the
 pen 15. Especially, when the space between the keys is touched, the touch
 input from the touched space ahead is defined to be canceled, thereby the
 error operation can be certainly avoided.
 Incidentally, the present invention is not intended to be limited to the
 screen touch input unit 101 shown in FIG. 22, and may be applied to a
 compact screen touch input unit 190 as shown in FIG. 36. In this case, the
 display area 10 is smaller than the aforementioned input unit 101, but the
 selection menu 11 and the key input area 12 are provided in the same as
 the aforementioned input unit 101, and the operation is the same.
 The display area 10 may be provided to a cover attached to the main body 2,
 and the key input area 12 may be provided to the main body 12. In the
 other words, the present invention can be widely applied to various
 portable personal computers, an electric notebook, a portable remote
 terminal (PDA) and so on.
 In the aforementioned embodiment, in order to operate the arrangement
 change means 173, the change keys 41 to 43 and the selection menu 11 are
 provided, but, only any one of the change keys 41 to 43 and the selection
 menu 11 may be provided. The arrangement change means 173 is not limited
 to be shown on the liquid crystal display 3 as described above, and may be
 provided with the use of a button type on the main body 2.
 The arrangements of the main keys 21 to 35, which are shown on the main key
 area 20, are not limited to the standard arrangement and the arrangements
 using the QWERTY arrangement. For example, the vowel area 20A is arranged
 in the bottom rank, and the consonant area 20B can be arranged in the top
 and middle ranks. Further, in the standard arrangement, the high-speed
 arrangement or the like, the vowel area 20A and the consonant area 20B may
 be arranged to reverse in the right and the left, and the keys may be
 arranged in a reverse order in contrast to the aforementioned embodiment.
 The change key area 40 or the function key area 50 may be placed at a
 different position from the aforementioned embodiment, such as a place
 adjacent to the right side of the main key area 20, a place above the main
 key area 20 or the like, that is to say, the positions of each of the key
 areas 20, 40 and 50 and so on can be appropriately defined in
 consideration of the dominant hand of an operator and the like.
 The touch means can be used with a finger or the like in addition to the
 pen 15. The screen is not limited to the liquid crystal display 3, and can
 be used with a CRT screen.
 Further, as a means for confirming the touch with the pen 15 or the like,
 various means of an electrostatic capacity type, an optical type, a
 resistance type or the like can be used in dependence upon a type of the
 screen, therefore, the aforementioned touch means may be appropriately
 selected in dependence upon the confirming means.
 It may be structured that the key is displayed in reverse when being
 touched, thereby it is easy to confirm which of the keys is touched. The
 reverse display states are changed between the touch operation with the
 shift operation and the normal operation, for example, the upper half of
 the touched key is displayed in reverse in the shift operation and the
 lower half of the touched key is displayed in reverse in the normal
 operation, thereby allowing a advantage in that the touch input operation
 is easily recognized.
 And then, the shift input means 171 can be structured to input the
 non-shift state and the shift state, namely, the first and second graphic
 character codes by discriminating between the input operations of the
 point touch and the bar touch as the first embodiment.
 The sixth embodiment according to the present invention will be explained
 below.
 In the embodiment, an information symbol is represented by an icon.
 More specifically, as shown in FIG. 37, on a liquid crystal display 103
 provided on a main body 102 of a screen display key input unit 195
 according to the embodiment, icons 111 to 116 for initiating respective
 applications are displayed. The number of icons and types of the
 applications started by the icons can be opportunely defined, but, in the
 embodiment, the six icons 111 to 116 for starting the application software
 of spreadsheet, database, communication, schedule, address book and word
 processor are defined.
 Each of the applications are started by operating each of the icons 111 to
 116 to start the application. For example, as shown in FIG. 38, a
 character input display 120 is displayed on the screen 103 by operating
 the icon 116 to initiate a word processor. It is advisable that the key
 input area 12 is shown with a pop-up manner to touch-input characters or
 the like, when a part of the screen 103 is touched.
 As shown in FIG. 39 of a block diagram showing an internal structure and
 FIG. 40 of a flow chart actually carried out in the unit 195, the screen
 display key input unit 195 consists of a screen touch input means 71 and
 an information selection processing means 72. The information selection
 processing means 72 is, in turn, composed of the criterion means 73, an
 icon selection processing means 77 and an application start means 78.
 The screen touch input means 71 senses a touch by the pen 15 within the
 screen 103, which is represented as a Step 11 in the drawing. A step will
 be simply replaced with "S" to shorten a sentence.
 When being touched by the pen 15, the criterion means 73 determines whether
 the pen 15 shifts over a predetermined length with continuous touch to any
 of the icons 111 to 116 (=Hyphen touch) (S12). On the basis of the number
 of pixels shown in FIG. 7 or the length between the starting and ending
 points of the touch input shown in FIG. 8 like the first embodiment, the
 criterion means 73 determines whether or not the pen 15 moves longer than
 the predetermined length in any area of the icons 111 to 116 with the
 continuous touch.
 Where the hyphen touch is confirmed, each start process of the applications
 is carried out (S13).
 Where the hyphen touch is not confirmed, that is to say, the moving
 distance of the pen 15 is shorter than the predetermined length, a
 selection of the icons 111 to 116 is carried out (S14). The selected icon
 from the icons 111 to 116 is to be the focus of the process to be carried
 out with the start process by the predetermined enter key or to be deleted
 by the delete key.
 According to the embodiment, the start process and the selection process of
 the icon are appropriately used by a double click and a single click of
 the mouse conventionally, but can be practiced in the touch input with the
 pen 15. Therefore, the screen display key input unit 195 can be structured
 to have an operation system and a menu system, like a system using the
 mouse, resulting in the enhanced operability and the improved portability
 of various applications.
 Furthermore, the conventional double clicking operation of the mouse is not
 always easy for a beginner. In the embodiment, however, the input is
 carried out by only touching a point with the pen 15 or moving the pen 15
 for the predetermined length, so that even the beginner can easily
 practice the operation, resulting in the further improved operability.
 Incidentally, in the sixth embodiment, the start process of the icon is
 carried out based on the moving distance of the touch input with the pen
 15, but can be carried out based on the time of continuously touching with
 the pen 15 in the same way as the fifth embodiment.
 In the sixth embodiment, the selection process of the icons 111 to 116 is
 carried out in the normal input, but the other processes may be defined,
 for example, the selection process can be carried out by showing a list of
 the files processed latest by the used application.
 And further, the key arrangement used for touch-inputting the characters or
 the like is not limited to the aforementioned arrangements, and, for
 example, as shown in FIG. 41, two alphabets may be arranged on every one
 of keys 121 in alphabetical order to be respectively shown at the top
 half-area and the bottom half-area, and as shown in FIG. 42, two
 characters may be arranged on every one of the keys 121 in order based on
 the QWERTY arrangement to be respectively shown at the right and left
 half-areas.
 The seventh embodiment according to the present invention will be explained
 below. In the embodiment, a screen display key input unit 201 is
 accompanied with a key board 214A, in which a key input as well as the
 touch input can be carried out.
 FIG. 43 shows the screen display key input unit 201 according to the
 embodiment. The screen display key input unit 201 has a main body 202
 provided with a liquid crystal display 203 to be also used as the portable
 remote terminal (PDA). On the back face of the main body 202, a support
 plate 206 is attached in order to stand the main body 202 for using. The
 display 203 may be protected by a cover pivotally move with reference to
 the main body 202.
 The liquid crystal display 203 has a data display area 210 to input
 characters and display data when the screen display key input unit 201 is
 used to operate word processor, spreadsheet, address book, electric mail
 or schedule function. The actual graphic format in the data display area
 210 may be arranged based on the function in operation.
 A key input area 212 as a key display area is provided under the data
 display area 210. And, there is a menu area 211 displaying a selection
 menu, shown with the pop-up manner when a menu key (will be touched upon
 below) is pushed, adjacent to the left side of the key input area 212.
 The menu area 211 and the key input area 212 may be displayed all the time.
 But, it is advisable in view of the display of much information by
 enlarging the display area 210 that the display area 210 is normally
 displayed on the almost all of the liquid crystal display 203, but by
 touching a selection menu display key, a key starting input operation and
 so on shown on the screen, the menu area 211 and the key input area 212
 are displayed on a part of the display area 210 with the pop-up manner as
 necessary.
 The screen display key input unit 201 has an internal structure as shown in
 FIG. 44. More specifically, the screen display key input unit 201 consists
 of a key input means 214 including the key board 214A, a touch input means
 215 including a pen 215A, an output controller 217 controlling displaying
 outputs of a process controller 216 and the screen 203, and an arrangement
 table 218 storing data of the key arrangements.
 As shown in FIG. 43, the key board 214A is a thin small card-sized key
 board, in which is accommodated in the main body 202 in non-use, but is
 used to separate from the main body 202 in use.
 The key input means 214 sends information of the key input to the process
 controller 216 of the main body 202 by using a radio 219, such as radio
 waves, infrared rays or the like, when any key on the key board 214A is
 inputted.
 The pen 215A may be held by a holder optionally provided to the main body
 202, so that the pen 215A shall not be lost.
 The actual operation of the screen display key input unit 201 is so carried
 out that the main body 202 is taken by the left hand or put on a table and
 the pen 215A is held by the right hand.
 The touch input means 215 sends information of the key input to the process
 controller 216 when any key in the key input area 212 displayed on the
 liquid crystal display 203 is touched with the pen 215A.
 The process controller 216 is provided with a shift input means 260 for
 inputting data of the shift position on each of the keys shown on the key
 board 214A or the key input area 212, an arrangement change means 263 for
 changing the arrangements of the keys shown on the key input area 212, a
 data processing means 264 for processing data of the inputted key, a
 selection input means 262 for inputting to select from data when two items
 of data are defined at the normal position or the shift position of each
 of the keys, and a selection menu display means 261 for displaying the
 selection menu for changing the aforementioned key arrangements.
 As shown in FIG. 45, the key board 214 A is provided with a main key area
 220, a change key area 240 and a function key area 250, which are arranged
 the same as the key input area 212 on the screen 203.
 More specifically, in the main key area 220, fifteen main keys 221 to 235
 are arranged in three ranks lengthwise and five files breadthwise. In the
 change key area 240, three change keys 241 to 243 are arranged. Further,
 in the function key area 250, five function keys 251 to 255 are arranged.
 Therefore, on the key board 214A, 23 keys including the change keys 241 to
 243 and the function keys 251 to 255 are arranged in four ranks.
 Each of the keys corresponding to the standard arrangement of the
 aforementioned embodiment shown in FIG. 23 is shown on each surface of the
 aforementioned keys.
 Procedures of processing in the screen display key input unit 210
 structured as described thus far will be explained below with reference to
 a flow char shown in FIG. 46.
 Firstly, the key input means 214 or the touch input means 215 senses the
 input with the key board 214A or the pen 215A, which is represented as a
 Step 1 in the drawing. A step will be simply replaced with "S" to shorten
 a sentence.
 When the input is sensed, the input is determined whether the input is the
 shift input (the second graphic character code input) or not (S2). The
 determination may be carried out in the key input means 214 or the touch
 input means 215 or in the side of the process controller 216.
 In the key input, the shift input is determined whether the shift key 251
 is pushed together with another key at the same time or not. In the touch
 input, the shift input is determined based on the degree the pen 215A is
 moved or a touching period of time in the same way as the aforementioned
 embodiment.
 Provided that the shift input is confirmed, the shift input means 260
 carries out a shift process under the decision that the shift position of
 the inputted key is inputted (S3).
 The inputted key is determined whether or not it is a menu key (the shift
 position of the key corresponding to the key 241 on the key board 214A and
 the key 241 on the liquid crystal display 203) (S4). Provided that the
 menu key is inputted, the selection menu display means 261 performs a menu
 display process showing selection menu keys 271 to 276 in the menu area
 211 (S5).
 Provide that the menu key is not inputted, the input is determined whether
 the arrangement change input, namely any key of the keys 241 to 243 of the
 change key area 240 is inputted or any key of the selection menu keys 271
 to 276 is inputted with the touch input (S6).
 Provided that the arrangement change input is confirmed, the arrangement
 change means 263 performs the arrangement change process changing the
 arrangement table 218 to show a designated key arrangement (S7).
 Provided that the arrangement change input is not confirmed, the selection
 input is evaluated (S8). Provided that the selection input is confirmed,
 the selection process selecting one of the designated keys (S9).
 When the inputted key is defined, the data processing means 264 performs
 the data process generating a character allocated the defined key or
 performing each of the functions (S10). Here, the data processing means
 264 performs the data process based on the character or the function
 corresponding to the inputted key in the defined key arrangement with
 reference to the arrangement table 218. Incidentally, initialization of
 the key arrangement is the standard arrangement.
 The results of the data process is outputted onto the liquid crystal
 display 203 by the output controller 217 (S11).
 A whole process by one input is carried out as aforementioned and
 subsequent inputs are done in the same way.
 In the embodiment as described thus far, the same effects as the
 aforementioned embodiments can be obtained. And furthermore, the key board
 214A is provided in addition to the touch input means 215 using the pen
 215A, so that an operator can appropriately select from the input manners,
 resulting in the improved operability.
 The key board 214A is provided to detach from the main body 202, and the
 key information, showing which of the keys is inputted, can be sent to the
 process controller 216 by using radio, so that the key board 214A can be
 operated to separate from the main body 202. Especially, when some persons
 simultaneously watch the display 203, every person can easily watch the
 display 203 without the operator in their way.
 The key board 214A is structured to be accommodated in the main body 202,
 so that the key board 214A is accommodated in the carrying of the screen
 display key input unit 210 and can be taken out from the main body 202 in
 the operating, resulting in the outstanding screen display key input unit
 201 in the operability and portability.
 Where the key board 214A is optionally used, it is not limited to be used
 for the screen display key input unit 201 for the portable remote terminal
 (PDA). The key board 214A can be used for a desktop screen display key
 input unit 361, as shown in FIG. 47, including a main body 362 and a
 display 363, and can be for a screen display key input unit 371, as shown
 in FIG. 48, including a display device 373, such as a wall-mounted
 television or the like. In this case, when a channel arrangement, arranged
 on the keys with channels of the television, is defined in one of the key
 arrangements shown on the display device 373, a channel changing operation
 can be carried out on the key board 214A.
 Where the key board 214A is combinedly used, a character inputted when any
 key of the keys 221 to 235 is pushed is displayed on the key input area
 212 of the display 203, therefore, it is not needed to show characters on
 the key board 214A.
 In the present invention, the arrangement of the character codes defined on
 the main keys 21 to 35 is not limited to the aforementioned embodiments,
 and can be appropriately defined in practice.
 For example, FIG. 49 to FIG. 53 can be used as each key arrangement of
 Japanese, English, digit and symbol shown on the screen for the touch
 input.
 Concretely, the main keys 21 to 35 of the Japanese key arrangement shown in
 FIG. 49 are arranged to basically correspond with the standard arrangement
 shown in FIG. 23. But, different points from the arrangement shown in FIG.
 23 are that the shift positions (the second graphic character code) of the
 keys 21, 22, 26, 27, 31 and 32 of the vowel area 20A are respectively
 allocated characters "e, u, i, a, {character pullout} and o"; the shift
 position of the key 25 is allocated "{character pullout}"; and the second
 shift positions (the third graphic character code) of the key 33 and 34
 are allocated letters "F" and "V".
 The support key (function key) area 50 is provided with five keys of: a key
 51 having an enter (return) function, a kana-kanji conversion function and
 a space input function; a key 52 having a kana-kanji conversion function
 and a function for changing to a "Num (digit)" arrangement; a key 53
 having a function for selecting the last conversion candidate in the
 kana-kanji conversion and a function for changing to a "Mark (symbol)"
 arrangement; a key 54 having a back space input function and a function
 for changing to an English key arrangement; and a key 55 having a delete
 (DEL) function and a function for chancing to a half-sized character mode.
 The main keys 21 to 35 of the Japanese high-speed arrangement shown in FIG.
 50 are arranged to be basically corresponded to the high-speed arrangement
 shown in FIG. 28. But different points from the arrangement of FIG. 28 are
 that the shift positions (the second graphic character code) of the keys
 21, 22, 26, 27, 31 and 32 in the vowel area 20A are respectively allocated
 characters "you, yu, yuu, ya, {character pullout} and yo"; the non-shift
 position of Li 4the key 31 is allocated letters "UU" as the third graphic
 character code; and the shift position of the key 25 is allocated a symbol
 "{character pullout}".
 The main keys 21 to 35 of the English key arrangement shown in FIG. 51 are
 arranged to be basically corresponded to the arrangement shown in FIG. 25.
 But different points from the arrangement of FIG. 25 are that the shift
 positions (the second graphic character code) of the keys 21, 22, 26, 27
 and 32 in the vowel area 20 are respectively allocated a comma ",", a
 period ".", a letter "J" and letters "Q" and "X"; the key 31 is allocated
 a "CAPS" key; and the shift positions of the keys 25 and 35 are
 respectively allocated letters "C" and "L".
 The support keys 51 to 55 are similar to the Japanese standard arrangement
 shown in FIG. 49, but different points are that a "space" key is defined
 on the key 51, a "{character pullout}(kana)" function for returning to the
 Japanese standard arrangement is defined on the key 52, and "{character
 pullout}(kana)" function for changing into the katakana input is defined
 on the key 53.
 In the digit key arrangement shown in FIG. 52, the keys for digits are
 arranged in the central three files of the main key area 20, the keys for
 arithmetic symbols are arranged in the leftmost file and the rightmost
 file. Concretely, the keys from the left to the right in the top rank of
 the main key area 20 are respectively allocated a symbol "-" on the key
 21, a digit "7" on the key 22, a digit "8" on the key 23, a digit "9" on
 the key 24 and a symbol "/" on the key 25. The keys from the left in the
 middle rank are respectively allocated a symbol "+" on the key 26, a digit
 "4" on the key 27, a digit "5" on the key 28, a digit "6" on the key 29
 and a colon symbol "*" on the key 30. Further, the keys from the left in
 the bottom rank are respectively allocated a digit "0" on the key 31, a
 digit "1" on the key 32, a digit "2" on the key 33, a digit "3" on the key
 34 and a symbol "." on the key 35.
 The support keys 51 to 55 are the same as the English key arrangement of
 FIG. 51.
 In the symbol key arrangement shown in FIG. 53, the keys for bracket
 symbols are arranged in the left two files of the main key area 20 and the
 keys for various symbols are arranged in the right three files. More
 specifically, the keys from the left to the right in the top rank of the
 main key area 20 are respectively allocated a bracket symbol "&lt;" on the
 key 21, a bracket symbol "&gt;" on the key 22, a semi-colon symbol ";" on the
 key 23, a colon symbol ":" on the key 24 and a symbol "/" on the key 25.
 The keys from the left in the middle rank are respectively allocated a
 bracket symbol "(" on the key 26, a bracket symbol ")" on the key 27, a
 qualifying symbol "@" on the key 28, a sharp symbol "#" on the key 29 and
 an asterisk symbol "*" on the key 30. Further, the keys from the left in
 the bottom rank are respectively allocated a bracket symbol "[" on the key
 31, a bracket symbol "]" on the key 32, a qualifying symbol "!" on the key
 33, a question symbol "?" on the key 34 and a symbol "=" on the key 35.
 Incidentally, the other symbols shown in FIG. 53 are respectively defined
 on the shift position of the keys 21 to 35 (the second graphic character
 code).
 Incidentally, the support keys 51 to 55 are the same as the English key
 arrangement of FIG. 51.
 In the key arrangements shown in FIG. 49 to FIG. 53, the first and second
 graphic character codes can be inputted with two types of the touch input
 operation in the same way as the aforementioned embodiments.
 Where a telephonic function is added to the screen display key input unit,
 as shown in FIG. 54, the key arrangement, defined with various keys suited
 for the telephonic function, is displayed, thereby the telephonic function
 may be used.
 An aggregate of twenty keys of the main keys 21 to 35 and the support keys
 51 to 55 are approximately the same as the number of buttons on a general
 telephone, so that the keys can be defined similar to the general
 telephone, resulting in the use like the general telephone.
 Incidentally, in each of the aforementioned embodiments, for example, when
 characters are respectively defined on the right and left key areas of
 each of the keys 21 to 35, the left key area is settled as the first
 graphic character code and the right key area is settled as the second
 graphic character code, however, in contrast, the left key area may be
 settled as the second graphic character code and the right key area may be
 settled as the first graphic character code. Similarly, each non-shift
 position (the lower side) of the keys 21 to 35 is settled as the first
 graphic character code and each shift position (the upper side) is settled
 as the second graphic character code, however, in contrast, the non-shift
 position can be settled as the second graphic character code and the shift
 position can be settled as the first graphic character code.
 As described thus far, the screen display key input unit according to the
 present invention is useful as an input unit in various information
 processors, in which being suitable for the use for the input unit
 incorporated into a compact information processor, such as various
 portable personal computers, an electric notebook, a portable remote
 terminal (PDA) and so on.