Abstract:
A communication terminal apparatus includes a disc member that is supported such that a portion thereof protrudes outside the body case, and that is rotated to output a signal corresponding to its rotation direction and rotation angle; first switch operated by pressing the disc member toward the body case; second and third switches separately operated by pivoting the disc member about a pivot axis parallel to the rotation plane and orthogonal to the pressing direction; a storage device storing a plurality of items; a display device displaying a cursor and a plurality of items read from the storage device; and a control device for moving the cursor displayed in the display device and for selecting and executing the displayed items or other items required for communications in accordance with the operations of the disc member and the first, second, and third switches.

Description:
BACKGROUND OF THE INVENTION 
     1. Technical Field of the Invention 
     The present invention relates to a rotatively-operated electronic component with a push switch which is usable in various electronic devices such as a portable device. 
     2. Description of the Related Art 
     A rotatively-operated electronic component having a disc member made to output a signal in accordance with a rotation direction and a rotated angle produced by its rotation, and a switch operated by pushing operation of the disc member in a direction orthogonal to a rotation axis of the disc member is known as a jog dial. Such the rotatively-operated electronic component is used, for example, for selecting an item on a display by rotating operation of the disc member, deciding the selected item by the pushing operation of the disc member or executing the decided item by further pushing operation of the disc member. 
     In another example of such the rotatively-operated electronic component disclosed in Japanese Patent Application Laid-open 11-163997, in addition to the above switch (a first switch), another switch (a second switch) is provided. The second switch is operated by pivoting the disc member to one direction about a pivot axis parallel to the rotation plane of the disc member and orthogonal to the pushing direction. By operating this second switch, a function such as canceling (clearing) once decided item is performed, which has been made conventionally by the other operating element such as a pressing operation key. 
     By providing the second switch, a number of operations may be performed by operating only the disc member, whereby operability extremely increases. Particularly, in a communication terminal apparatus such as a portable phone, a number of operations may be performed with one finger of a thumb or a forefinger while holding it in a hand, thus providing an extremely convenient handling capability. 
     SUMMARY OF THE INVENTION 
     It would be desired to provide a further increase of the operability in such apparatus. 
     For example, when the disc member is pivoted about the pivot axis parallel to the rotational plane of the disc member and orthogonal to the pushing direction, operability of the apparatus will be improved further if two switches are provided for being operated by pivoting operations to two directions instead of pivoting the one direction. 
     Accordingly, an object of the present invention is to provide means to improve the operability of an apparatus having a rotatively-operated electronic component. 
     A rotatively-operated switch apparatus according to an embodiment of the present invention is characterized to include a rotating operation unit capable of accepting rotating operation and pressing operation in a direction orthogonal to a rotation axis of the rotating operation and outputting a signal in accordance with a rotational movement of the rotating operation, a first push switch operated by pressing the rotating operation unit, and a second and a third push switches disposed at both sides of the rotation plane of the rotating operation unit and operated by pivoting about a pivot axis parallel to the rotation plane of the rotating operation unit and orthogonal to the direction of the pressing operation. 
     Accordingly, the rotatively-operated switch apparatus according to an embodiment of the present invention may perform separate operations by operating the rotating operation unit into five directions, namely, the rotating operation to two directions, the pushing operation, and the pivoting operation to two directions about the pivot axis parallel to the rotation plane of the disc member and orthogonal to the pressing direction. Each of the operations may be provided with different meanings respectively. Accordingly, a number of items may be processed by operating only the rotating operation unit whereby the operability is extremely increased. 
     A communication terminal apparatus according to an embodiment of the present invention is characterized to include a housing member, a rotating operation unit which is supported in such a way that a portion thereof protrudes into the housing member, for accepting rotating operation and pressing operation in a direction orthogonal to a rotation axis of the rotating operation, and outputs a signal in accordance with rotational movement of the rotating operation, a first push switch disposed within the housing member and operated by the pressing operation of the rotating operation unit, a second and a third push switches disposed at both sides of the rotation plane of the rotating operation unit within the housing member and are respectively operated by pivoting the rotation operation unit about the pivot axis parallel to the rotation plane of the rotating operation unit and orthogonal to the direction of the pressing operation, to the both sides of the rotation plane of the rotating operation unit, a storage device for storing a plurality of items, a display device for displaying a plurality of the items read from the storage device, and a control device for conducting selection and execution of the items displayed on the display device, and selection and execution of the function required for communications in accordance with the rotation of the rotating operation unit and the operation of the first to the third push switches. 
     Accordingly, the communication terminal apparatus according to the present invention may effect operation of the rotating operation unit to five directions, namely, the rotating operation to two directions, the pressing operation, and the pivoting operation toward two directions about the pivot axis parallel to the rotation plane of the rotating operation unit and orthogonal to the pressing direction, each operation being provided with different meanings respectively. Therefore, many items may be processed by only operating the rotating operation unit. For example, by holding the apparatus in a hand, considerably many items may be processed only by bending, stretching, pressing down or sliding of the thumb or the forefinger, whereby convenience in handling is extremely increased. 
     Other and further objects, features and advantages of the present invention will appear more fully from the following description. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a schematic perspective view showing an appearance of a portable phone according to an embodiment of the present invention, 
     FIG. 2 is a block diagram showing a circuit configuration of the portable phone, 
     FIG. 3 is a schematic rear view showing a jog dial together with FIG. 4, 
     FIG. 4 is an expanded sectional view of a main part of the jog dial, 
     FIG. 5 is an expanded sectional view taken along line V—V of FIG. 1, 
     FIG. 6 is an exploded perspective view of a main part of the jog dial, 
     FIG. 7 is a perspective view of a main part of the jog dial, and 
     FIG. 8 is a schematic exploded perspective view showing an example of a switch apparatus according to an embodiment of the present invention. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereunder, referring to the attached drawings, there are described embodiments in which a rotatively-operated electronic component according to the present invention is applied to a portable phone. 
     As shown in FIG. 1, the portable phone  1  includes a body case  2  made of synthetic resin, where various kinds of members are housed or mounted. At the upper part of the body case  2 , an antenna  3  is installed to be extracted or stowed freely, and through the antenna  3  transmission and reception of radio waves are conducted with base stations. 
     At the front upper part of the body case  2  is installed a speaker  4  as an electro-acoustic conversion means. When calling, a voice of a called party is outputted from this speaker  4 . At the front lower part of the body case  2  is installed a microphone  5  as an acoustic-electronic conversion means. When calling, voice of a user is collected by this microphone  5 . 
     At somewhat upper position from the front center of the body case  2  is installed a liquid crystal display (LCD)  6  as a display means capable of displaying various kinds of information such as receiving condition of radio waves, the amount of battery remaining, telephone numbers of called parties, registered contents as a telephone directory (telephone numbers and names of called parties or the like), outgoing and incoming history, and other kinds of registered contents. 
     At the front lower half of the body case  2 , various operation keys  7  are installed as operating means. By pressing these operation keys  7 , input of various instructions, texts or the like may be performed. 
     Further, at the upper part of the left side surface of the body  2 , a jog dial  8  is installed as a different switch apparatus from the operation keys  7 . By rotating this jog dial  8 , menus displayed on the liquid crystal display  6 , scrolling display of various items such as a list of outgoing and incoming history, telephone number list or the like, and a cursor for selecting items, etc., may be displayed. By the pushing operation (pushing-in operation) of the jog dial  8  to the internal direction of the body case  2 , the items displayed on the liquid crystal display  6  may be decided or executed. Furthermore, selection or execution of the designated items may also be conducted by moving the jog dial  8  to the rear side of the portable phone along the side surface of the body case  2  to provide the pivoting operation (push-down operation) about the pivot axis parallel to the rotation plane of the jog dial  8  and orthogonal to the pushing-in direction, or by moving the jog dial  8  to the opposite direction of the push-down operation, namely, by moving it to the front side of the portable phone along the side surface of the body case  2  to provide the pivoting operation (push-up operation) about the pivot axis parallel to the rotation plane of the jog dial  8  and orthogonal to the pushing direction. Various operations may be provided. For example, once decided items may be cleared by the push-up operation, and a hierarchy of the menu may be raised by one level during display of the menu or a display of a menu (called catch menu hereafter) by which a user is allowed to select procedures such as hold-on of call, microphone-off or the like when calling may be actuated during calling by the push-down operation. 
     As shown in FIG. 2, the jog dial  8  essentially consist of a disc member  9 , a detection circuit  10 , and a first to a third switches  11 ,  12  and  13 . When the rotating operation is performed with the disc member  9 , its rotation direction and rotation angle are detected by the detection circuit  10 , and the result of the detection is outputted to a control means described later. When the disc member  9  is pushed into the interior of the body case  2  by the pushing operation, the first switch  11  is operated, and when the push-down operation is performed with the disc member  9 , the second switch  12  is operated, and when the push-up operation is performed with the disc member  9 , the third switch  13  is operated. The control means described later is operable to recognize operating condition of these switches, and to conduct various controls in accordance with the rotation direction and the rotation angle of the disc member  9  and the operating condition of the first to the third switches  11 ,  12  and  13 . 
     As shown in FIG. 3, the disc member  9  is supported by a base member  14  made of insulation material to be rotative and movable to the pushing direction, namely, to an arrow A direction in FIG.  3 . More specifically, an intermediate supporting plate  15  is supported by the base member  14  with freely pivoting, and the disc member  9  is supported at the position near the pivot edge of the intermediate supporting plate  15 . The intermediate supporting plate  15  is impelled to move to a clockwise direction shown in FIG. 3 by a spring member (not shown), namely, to an arrow CW direction in FIG. 3, whereby pivoting to the clockwise direction CW is made to stop at the initial position as shown in FIG.  3 . At the rear side of the intermediate supporting plate  15  of the base member  14 , an intermediate operation element  16  having the shape of a letter L from side-view is supported with freely pivoting. At the position facing the rear edge  16   a  of the intermediate operation element  16  of the base member  14 , the first switch  11  is disposed. Accordingly, when the disc member  9  is pushed to the pushing-in direction A, the intermediate supporting plate  15  pivots to the counterclockwise direction, namely, to the arrow CCW direction in the drawing, against the impelling force of the spring member (not shown), so that the disc member  9  appears to move to the pushing-in direction A apparently. When the intermediate supporting plate  15  pivots to the counterclockwise direction CCW, a front edge  16   b  of the intermediate operation element  16  is pressed by a rear edge  15   a  of the intermediate supporting plate  15 , and the intermediate operation element  16  is pivoted such that the rear edge  16   a  moves to the first switch  11 , and pushes down the first switch  11 , whereby a signal is outputted to the effect that the push-down operation is conducted by the first switch  11 . When the force of pushing the disc member  9  to the pushing-in direction A is removed, the intermediate supporting plate  15  pivots to the clockwise direction CW by the impelling force of the spring member and returns to the initial position. On the base member  14 , two supported pieces  14   a,    14   a  are formed, each protruding to the opposite directions with respect to the direction orthogonal to the pushing-in direction A and parallel to the rotation plane of the disc member  9 . 
     FIG. 3 shows that the disc member  9  is supported by the intermediate supporting plate  15  which is freely pivoting, but the disc member may also be supported by an intermediate supporting plate which, when being pushed, slides straight to the pushing-in direction A with respect to the base member. 
     As shown in FIG. 5, the disc member  9  consists of two discs, namely, a stationary fixed disc and a rotating disc which is disposed coaxially with the fixed disc and rotative with respect to the fixed disc. At the portion near the rim of the rotating disc facing the fixed disc, there exist a pair of counter electrodes, each being spaced and facing in the direction of the radius. These counter electrodes contact on-the-slide with pairs of counter electrodes formed at the portion near the rim of the fixed disc. The counter electrodes of the fixed disc, both in the outer and in the inner circumference, are disposed in a little displacement with respect to the circumferential direction. For example, when the counter electrodes of the rotating disc contact the counter electrodes of the fixed disc, and by putting the counter electrodes of the rotating disc to be at grounding potential, rotating angle may be detected by counting the number of times when the counter electrodes of the rotating disc fall to the grounding potential. Regarding the counter electrodes of the fixed disc, those of the outer circumference and the inner circumference are disposed in a little displacement with respect to the circumferential direction, so that the electrodes which earlier fall to the grounding potential according to the direction of rotation are different between those of the outer circumference and those of the inner circumference. Such being the case, rotation direction may be detected according to which electrodes fall earlier to the grounding potential. Therefore, by detecting by means of the detection circuit  10  the number of times when the counter electrodes fall to the grounding potential and which electrodes of the outer or inner circumference fall earlier to the grounding potential, a control means described later may know the rotation direction and the rotation angle of the disc member  9 , thereby capable of performing the required control. 
     As shown in FIGS. 5-7, the body case  2  is formed with a front case  2 F and a rear case  2 R. In the rear case  2 R is formed a placement unit  17  of the jog dial  9 . The placement unit  17  is formed long recessed in the lateral direction, and a notch  17   a  is opened at the side surface in the left side. At the side walls  17   b  and  17   c  facing each other at the top and the bottom of the placement unit  17 , are provided pivoting fulcrums  18 . 
     The pivoting fulcrum  18  is composed of two supporting pieces  19 ,  19 ′, each facing spaced in the longitudinal direction, namely, to arrows B and c directions in FIG. 1, and position control pieces  20 ,  20 ′, each located at the left and right sides of the two supporting pieces  19 ,  19 ′. The surfaces of the supporting pieces  19 ,  19 ′ facing with each other are formed to shape protruded curve surfaces  19   a,    19   a ′ viewing in the vertical direction, namely, viewing in arrows D and E directions in FIG.  1 . The space of the most narrow portion between the two protruded curve surfaces  19   a  and  19   a ′ is made to be the same as or a slightly larger than a thickness F of the supported piece  14   a  of the base member  14  of the jog dial  9 . The space between the two position control pieces  20  and  20 ′ is made to be a little larger than a width G of the supported piece  14   a.    
     The supported piece  14   a  of the base member  14  is respectively inserted between the supporting pieces  19  and  19 ′ of the respective pivoting fulcrum  18 , and sandwiched by the respective protruded curve surfaces of  19   a,    19   a ′, and a portion of the disc member  9  is made to protrude outside the body case  2  through the notch  17   a.  Movement thereof in the lateral direction is controlled by the position control pieces  20 ,  20 ′. Within the rear case  2 R, at the opposite surface to the surface of the base member  14  which supports the disc member  9 , namely, at the position facing the rear surface  14   b  is disposed the second switch  12 . At the position facing the disc member  9  of the front case  2 F is disposed the third switch  13 . 
     Accordingly, by rubbing with a finger pad or the like the portion of the disc member  9  protruding outside the body case  2  to move upward, namely, to an arrow D direction in FIG. 1, or to the rear side direction, namely, to an arrow E direction in FIG. 1, the disc member  9  is rotated to be able to output a signal in accordance with its rotating direction and rotating angle, and by pushing to an arrow A direction, the first switch  11  is pushed down to be able to output the adapted signal. By pushing to the rear side direction with the finger pad or the like the portion of the disc member  9  protruding outside the body case  2 , namely, by pushing to an arrow C direction, the disc member  9  and the base member  14  supporting thereof are made to pivot to the rear side direction about the supported pieces  14   a  serving as pivoting fulcrums supported by the supporting pieces  19 ,  19 ′, whereby the second switch  12  is pushed down with the rear surface  14   b  of the base member  14  to output the adapted signal. Furthermore, by pushing to the front side direction with the finger pad or the like the portion of the disc member  9  protruding outside the body case  2 , namely, by pushing to an arrow B direction, the disc member  9  and the base member  14  supporting thereof are made to pivot to the front side direction about the supported pieces  14   a  serving as pivoting fulcrums supported by the supporting pieces  19 ,  19 ′, whereby the third switch  13  is pushed down with the front surface of the disc member  9  to be able to output the adapted signal. 
     Moreover, the space between the control pieces  20  and  20 ′ is made a little larger than the width G of the supported piece  14   a  of the base member  14 , so that the supported piece  14   a  may move freely within the space surrounded by these control pieces  20 ,  20 ′ and the supporting pieces  19 ,  19 ′ without being provided with stress, whereby occurrence of plastic deformation on the supported piece  14   a  and the other parts of the base member  14  may be prevented. 
     Next, referring to FIG. 2, there is described an outline of the circuit configuration of the portable phone  1  according to the present invention. 
     Firstly, command information inputted from the above-described various means such as operation keys  7  or the jog dial  8  is inputted to a CPU (Central Processing Unit)  21 . The CPU  21 , based on the inputted command information, controls an LCD driver circuit  22  and displays on the liquid crystal display  6  various information according to the command information (for example, telephone number being inputted, menu items, or outgoing history, telephone directory information or the like). The CPU  21 , based on command information being inputted, controls a transmission-reception circuit unit  23  to execute various processing according to the command information such as call processing, call closing processing or the like. Furthermore, the CPU  21  accesses a RAM (Random Access Memory)  24  which is a first storage means and makes it store designated information, or accesses an EEPROM (Electrically Erasable and Programmable Read Only Memory)  25  which is a second storage means to make it store various information such as outgoing history or telephone directory list which do not want to be erased when power is tuned off. The CPU  21  is made to execute each control described above based on program code stored in a ROM (Read Only Memory)  26 . 
     Under control of the CPU  21 , the transmission reception circuit unit  23  is made to transmit control signal via the antenna  3  to conduct the call processing, and to receive incoming call signal from the base station via the antenna  3  to notify the CPU  21  about the incoming call. When calling, the transmission-reception circuit unit  23  also transmits a voice signal inputted from the microphone  5  after performing designated signal processing, or demodulates the voice signal after performing designated signal processing for a reception signal to output to the speaker  4 . 
     The jog dial  8  of the portable phone  1  may provide respective command information according to the rotating operations of the disc member  9 , the pushing-in operation of the disc member  9 , the pivoting operation in the push-down direction of the disc member  9  and the pivoting operation in the push-up direction of the disc member  9 . Accordingly, various instruction operation may be performed with the jog dial  8  by operating the disc member  9  into the five directions. Functions conventionally allocated to the other operation keys, for example, clear of the decided item, shift-up of a menu hierarchy by one level, display of the catch menu during calling, etc., may be performed by operating only the jog dial  8  and not using the other operation keys  7 . Accordingly, it is possible to perform instruction operations with a finger of the thumb or the forefinger while holding the phone in a hand, thereby extremely increasing convenience of handling. 
     FIG. 8 shows another example of a jog dial  8 A. 
     In the embodiment described above, the second and the third switches  12 ,  13  are disposed in positions to sandwich the disc member  9 , and there is an advantage that the space produced by disposition of the three switches may be made compact. In the present invention, the second and the third switches  12 ,  13  are not necessarily disposed in the positions to sandwich the disc member  9 . 
     In the jog dial  8 A of FIG. 8, the disc member  9  is supported on the base member  27  capable of rotating and moving to the pushing-in direction, namely, to an arrow A direction in the drawing, which is the same as the jog dial  8  of the embodiments described above. On the base member  27  is supported a first switch (not shown) which is operated by pushing the disc member  9  to an arrow A direction. 
     The base member  27  is made longer in the pushing-in direction. At about the midpoint thereof, protruding supported pins  28  (one of them is shown) are provided. 
     In the housing member, protruding supporting pieces  29 ,  29 ′ are provided. In supporting holes  29   a ,  29   a ′ of the protruding supporting pieces  29 ,  29 ′, the supported pins  28 ,  28 ′ of the base member  27  are supported allowing free pivoting movement. Sandwiched between the front side direction edge of the base member  27 , namely, a position corresponding to the edge of the side where the disc member  9  is supported, and the backward edge (the other side of the front side edge) of the base member  27 , switches  30 ,  31  are disposed at the positions respectively corresponding to the edge of the side where the disc member is supported and to the edge of the opposite side, sandwiching the supported pins  28 . The switches  30 ,  31  are further supported by a flexible printed board  32 , and the switch  30  serves as the second switch and the switch  31  serves as the third switch. 
     In the jog dial  8 A, in addition to the rotating operation of the disc member  9  to two directions and the pushing-in operation of the disc member  9 , the push-down operation of the disc member  9 , namely, the operation to ove the disc member  9  to the arrow C direction in the drawing is made to pivot the base member  27  to push the second switch with the front side edge of the base member  27 . Also, the push-up operation of the disc member  9 , namely, the operation to move the disc member  9  to the arrow B direction in the drawing is made to pivot the base member  27  to push the third switch  31  with the backward edge of the base member  27 . 
     Accordingly, also with the switch apparatus of this example, a variety of instruction operations may be performed by operating only the disc member  9 . 
     Any of the shapes and the configurations of each part illustrated in the described embodiments and the examples thereto shows only an embodying example in carrying out the present invention, and it is to be understood that the technical scope of the present invention shall not be interpreted in a limited sense by these examples.