Source: http://www.google.com/patents/US6239845?ie=ISO-8859-1&dq=7,339,580
Timestamp: 2014-07-13 17:31:40
Document Index: 537309759

Matched Legal Cases: ['art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25', 'art 25']

Patent US6239845 - Television receiver and receiving method thereof - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA television receiver and a signal receiving method thereof includes a terminal for connecting the television receiver to a personal computer for inputting information from the personal computer to the television receiver, a display for displaying a television signal, an input operation means, such as...http://www.google.com/patents/US6239845?utm_source=gb-gplus-sharePatent US6239845 - Television receiver and receiving method thereofAdvanced Patent SearchPublication numberUS6239845 B1Publication typeGrantApplication numberUS 08/914,148Publication dateMay 29, 2001Filing dateAug 19, 1997Priority dateAug 22, 1996Fee statusPaidPublication number08914148, 914148, US 6239845 B1, US 6239845B1, US-B1-6239845, US6239845 B1, US6239845B1InventorsTsuguo Itagaki, Chihiro Ikeda, Akira KitazumeOriginal AssigneeHitachi, Ltd., Hitachi Video And Information System, IncorporatedExport CitationBiBTeX, EndNote, RefManPatent Citations (10), Referenced by (14), Classifications (16), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetTelevision receiver and receiving method thereofUS 6239845 B1Abstract A television receiver and a signal receiving method thereof includes a terminal for connecting the television receiver to a personal computer for inputting information from the personal computer to the television receiver, a display for displaying a television signal, an input operation means, such as a remote controller, for generating a command signal, and a controller supplied with the command signal for controlling the personal computer and for inputting the information from the personal computer through the terminal to the television receiver for converting the television receiver from a television mode to a personal computer mode for displaying the information on a screen of said display. Advantageously, the personal computer and the television receiver are controlled by a command signal from the input operation means. The receiver and receiving method further includes a screen display processor for displaying a software keyboard on the screen of the display, which allows for selection of a character by using said input operation means. The screen display processor is further provided with a drag mode display menu means for displaying a drag mode on the display when a drag mode signal is generated from the input operation means.
a terminal for connection to a personal computer for inputting information from said personal compute; a display for displaying a television signal; input operation means for generating a command signal; and a controller responsive to said command signal for controlling said personal computer and for inputting said information from said personal computer through said terminal to said television receiver for converting said television receiver from a television operating mode to a personal computer operating mode and for displaying said information on a screen of said display; wherein, said personal computer and said television receiver are controlled by said command signal from said input operation means; and wherein said controller further comprises a detector for detecting power supplied from said personal computer and for turning the operating mode of said television receiver to a personal computer input mode for receiving said information from said personal computer. 2. A television receiver according to claim 1, wherein said input operation means comprises direction indication means for operating a cursor, and wherein said controller has a function for inhibiting said direction indication means provided in said input operation means by detecting that said personal computer is not connected.
a PC input terminal which connects to a personal computer and receives a PC signal output from the personal computer; a display unit, including a screen, which displays at least one of a television signal and the PC signal on the screen of the display unit; and a controller, responsive to an output signal of a remote controller which controls the television receiver, which generates a command signal including key information and/or cursor movement information which can be processed by the personal computer corresponding to the output signal of the remote controller and controls the personal computer based on the command signal, thereby enabling the television receiver and the personal computer to be controlled by the output signal of the remote controller; wherein the personal computer displays a cursor on the screen of the display unit; wherein the remote controller includes a direction indication unit which indicates a direction of movement of the cursor on the screen of the display unit and moves the cursor in the indicated direction on the screen of the display unit, and a determination button which determines an item on the screen of the display unit to be indicated by the cursor; and wherein the television receiver further comprises a screen display processor which displays a software keyboard on the screen of the display unit, the software keyboard including a plurality of characters, symbols, and/or numbers which can be selected from the software keyboard displayed on the screen of the display unit using the cursor by operating the direction indication unit and the determination button. 4. A television receiver according to claim 3, wherein the remote controller further includes a channel selector unit which selects television channels of the television receiver and also serves as the direction indication unit.
wherein a desired operational condition of the mouse can be selected from the menu displayed on the screen of the display unit using the cursor by operating the direction indication unit and the determination button. 6. A television receiver according to claim 3, wherein the controller outputs key codes corresponding to the characters, symbols, and/or numbers which are selected using the cursor as the command signal to the personal computer.
wherein the screen display processor displays a drag mode indicator on the screen of the display unit in response to the drag mode signal; and wherein a drag operation can be performed on the screen of the display unit using the cursor by operating the direction indication unit and the determination button while the drag mode indicator is displayed on the screen of the display unit. 8. A television receiver according to claim 3, wherein the direction indication unit is constituted by a plurality of buttons arranged in a shape of a cross.
a PC input terminal which connects to a personal computer and receives a PC signal output from the personal computer; a display unit, including a screen, which displays at least one of a television signal and the PC signal on the screen of the display unit; a controller, responsive to an output signal of a remote controller which controls the television receiver, which outputs a command signal corresponding to the output signal of the remote controller to the personal computer via the PC input terminal and controls the personal computer based on the command signal, thereby enabling the television receiver and the personal computer to be controlled by the output signal of the remote controller; and a PC interface control circuit, connected between the PC input terminal and the controller, which receives the command signal from the controller and outputs the command signal to the personal computer via the PC input terminal; wherein the personal computer supplies power to the PC interface control circuit via the PC input terminal when the personal computer is connected to the PC input terminal and is turned on; wherein the PC interface control circuit detects whether the personal computer is supplying power to the PC interface control circuit, and notifies the controller whether the personal computer is supplying power to the PC interface control circuit; wherein if the PC interface control circuit notifies the controller that the personal computer is supplying power to the PC interface control circuit, the controller switches to a PC control mode which enables the personal computer to be controlled by the output signal of the remote controller; and wherein if the PC interface control circuit does not notify the controller that the personal computer is supplying power to the PC interface control circuit, the controller switches to a television receiver control mode which enables the television receiver to be controlled by the output signal of the remote controller. 11. A television receiver according to claim 10, wherein the personal computer displays a cursor on the screen of the display unit;
wherein the remote controller includes a direction indication unit which indicates a direction of movement of the cursor on the screen of the display unit and moves the cursor in the indicated direction on the screen of the display unit; and wherein if the PC interface control circuit does not notify the controller that the personal computer is supplying power to the PC interface control circuit, the controller inhibits a cursor movement operation instructed by the remote controller. 12. A television receiver comprising:
a PC input terminal which connects to a personal computer and receives a PC signal output from the personal computer; a display unit, including a screen, which displays at least one of a television signal and the PC signal on the screen of the display unit; a controller, responsive to an output signal of a remote controller which controls the television receiver, which outputs a command signal corresponding to the output signal of the remote controller to the personal computer via the PC input terminal and controls the personal computer based on the command signal, thereby enabling the television receiver and the personal computer to be controlled by the output signal of the remote controller; and a PC interface control circuit, connected between the PC input terminal and the controller, which receives the command signal from the controller and outputs the command signal to the personal computer via the PC input terminal; wherein the personal computer outputs a command to the PC interface control circuit via the PC input terminal when the personal computer is connected to the PC input terminal and is turned on; wherein if the PC interface control circuit receives the command from the personal computer, the PC interface control circuit outputs the command to the controller; wherein if the controller receives the command from the PC interface control circuit, the controller switches to a PC control mode which enables the personal computer to be controlled by the output signal from the remote controller; and wherein if the controller does not receive the command from the PC interface control circuit, the controller switches to a television receiver control mode which enables the television receiver to be controlled by the output signal from the remote controller. 13. A television receiver according to claim 12, wherein the personal computer displays a cursor on the screen of the display unit;
wherein the remote controller includes a direction indication unit which indicates a direction of movement of the cursor on the screen of the display unit and moves the cursor in the indicated direction on the screen of the display unit; and wherein if the controller does nor receive the command from the PC interface control circuit, the controller inhibits a cursor movement operation instructed by the remote controller. 14. A television receiver comprising:
a PC input terminal which connects to a personal computer and receives a PC signal output from the personal computer; a display unit, including a screen, which displays at least one of a television signal and the PC signal on the screen of the display unit; a controller, responsive to an output signal of a remote controller which controls the television receiver, which generates a command signal including key information and/or cursor movement information which can be processed by the personal computer corresponding to the output signal of the remote controller and outputs the command signal; and a PC interface control circuit, connected between the PC input terminal and the controller, which communicates with the controller and the personal computer, and which receives the command signal from the controller and outputs the command signal to the personal computer via the PC input terminal; wherein the remote controller includes a direction indication unit which indicates a direction of movement of a cursor on the screen of the display unit and moves the cursor in the indicated direction on the screen of the display unit, and a determination button which determines an item on the screen of the display unit to be indicated by the cursor; and wherein the television receiver further comprises a screen display processor which displays a software keyboard on the screen of the display unit, the software keyboard including a plurality of characters, symbols, and/or numbers which can be selected from the software keyboard displayed on the screen of the display unit using the cursor by operating the direction indication unit and the determination button. 15. A television receive according to claim 14, wherein the controller generates key codes corresponding to the characters, symbols, and/or numbers which are selected the key codes as the command signal.
a mouse command signal representing operation of a mouse, and a keyboard command signal representing operation of a keyboard; wherein the PC interface control circuit includes: first PC interface controller, connected between the PC input terminal and the controller, which communicates with the controller and the personal computer, and which receives the mouse command signal from the controller and outputs the mouse command signal to the personal computer via the PC input terminal; and a second PC interface controller, connected between the PC input terminal and the controller, which communicates with the controller and the personal computer, and which receives the keyboard command signal from the controller and outputs the keyboard command signal to the personal computer via the PC input terminal. 17. A television receiver which connects to a personal computer, the television receiver comprising:
a display unit, including a screen, which displays a PC signal output from the personal computer on the screen of the display unit; and a PC interface control circuit which, when the personal computer is connected to television receiver, outputs to the personal computer a command signal for controlling the personal computer, the command signal including key information and/or cursor movement information which can be processed by the personal computer and being generated based on an output signal of a remote controller which controls the television receivers; wherein the remote controller includes a direction indication unit which indicates a direction of movement of a cursor on the screen of the display unit and moves the cursor in the indicated direction on the screen of the display unit, and a determination button which determines an item on the screen of the display unit to be indicated by the cursor; and wherein the television receiver further comprises a screen display processor which displays a software keyboard on the screen of the display unit, the software keyboard including a plurality of characters, symbols, and/or numbers which can be selected from the software keyboard displayed on the screen of the display unit using the cursor by operating the direction indication unit and the determination button. 18. A television receiver which connects to a personal computer, the television receiver comprising:
a display unit, including a screen, which displays a PC signal output from the personal computer on the screen of the display unit; a controller which, when the personal computer is connected to the television receiver, generates a command signal for controlling the personal computer based on an output signal of a remote controller which controls the television receiver, the command signal including key information and/or cursor movement information which can be processed by the personal computer; and a PC interface control circuit, connected to the controller, which receives the command signal from the controller and outputs the command signal to the personal computer, thereby enabling the personal computer to be controlled by the remote controller; wherein the remote controller includes a direction indication unit which indicates a direction of movement of a cursor on the screen of the display unit and moves the cursor in the indicated direction on the screen of the display unit, and a determination button which determines an item on the screen of the display unit to be indicated by the cursor; and wherein the television receiver further comprises a screen display processor which displays a software keyboard on the screen of the display unit, the software keyboard including a plurality of characters, symbols, and/or numbers which can be selected from the software keyboard displayed on the screen of the display unit using the cursor by operating the direction indication unit and the determination button. 19. A television receiver comprising:
a PC input terminal which connects to a personal computer and receives a video signal output from the personal computer; a display unit, including a screen, which displays a television signal or the video signal on the screen of the display unit; a display processor which, when the video signal is displayed on the screen of the display unit, displays a software on the screen of the display unit, the software keyboard including a plurality of characters, symbols, and/or number which can be selected from the software keyboard displayed on the screen of the display unit using a remote controller which controls the television receiver; and a PC interface control circuit which outputs to the personal computer key codes corresponding to the characters, symbols, and/or numbers which are selected from the software keyboard using the remote controller, thereby enabling characters, symbols, and/or symbols to be input to the personal computer using the remote controller. 20. A television receiver according to claim 19, further comprising a controller, connected to the PC interface control circuit, which generates the key codes corresponding to the characters, symbols, and/or numbers which are selected from the software keyboard using the remote controller, and outputs the key codes to the PC interface control circuit.
a terminal for connection to a personal computer for inputting information from said personal computer; a display for displaying a television signal; input operation means for generating a command signal; and a controller responsive to said command signal for controlling said personal computer and for inputting said information from said personal computer through said terminal to said television receiver for converting said television receiver from a television operating mode to a personal computer operating mode and for displaying said information on a screen of said display; wherein, said personal computer and said television receiver are controlled by said command signal from said input operation means; wherein said controller further comprises a detector for detecting a command from said personal computer and for turning said controller to a personal computer input mode for receiving said information from said personal computer; and wherein said input operation means comprises direction indication means for operating a cursor, and wherein said controller has a function for inhibiting said direction indication means provided in said input operation means by detecting that said personal computer is not connected.
BACKGROUND OF THE INVENTION The invention relates to a television receiver having a terminal to which a personal computer may be connected for displaying information received from the personal computer.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a television receiver with an interface which makes it possible to operate a personal computer connected thereto by using the remote controller of the television receiver.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a television receiver having an interface function for interfacing with a personal computer.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, wherein like reference numerals are utilized to designate like parts throughout the several views, FIG. 1 is a block diagram illustrating a television receiver having an interface function used for communication with a personal computer. Referring to FIG. 1, reference numeral 50 generally denotes a television receiver. The television receiver 50 includes an antenna 1, a tuner 2, an IF (intermediate frequency) processing circuit 3, external input terminals 4 and 5 for inputting a signal from a VCR or a video disk, a PC (personal computer) input terminal 6 for inputting information from a personal computer, a first signal switching circuit 7, a first video signal processing circuit 8 for processing a NTSC signal, a first synchronizing signal processing circuit 9 for processing a NTSC signal, a second video signal processing circuit 10 for processing information from the personal computer, a second synchronizing signal processing circuit 11 for processing information from the personal computer, a second signal switching circuit 12, a video signal output circuit 13, a deflection circuit 14, a CRT (cathode ray tube) 15, a control processing means 16, a channel selection processing circuit 17, an input operation means 18, a screen display processing circuit 19, a memory 20, a PC interface control circuit 21 and a PC control terminal 22. A controller for controlling the television receiver and the personal computer is formed by the control processing means 16 and the PC interface control circuit 21.
FIG. 3(a) illustrates clock signals and data signals used for the communication between the first and the second PC interface control circuits 21 a and 21 b and the PC controlling part 25. The data signal comprises a start bit, eight-bit data, a parity bit and a stop bit. A key code (scan code), which is information corresponding to the keyboard, is outputted from the second PC interface control circuit 21 b to the PC controlling part 25. A command, such as an ACK (acknowledgment response), is outputted from the first and the second PC interface control circuits 21 a and 21 b to the PC controlling part 25, and another command for an ID (identification) read, or a change in setting, etc., is outputted from the PC controlling part 25 to the first and the second PC interface control circuits 21 a and 21 b. When communication is started, the first and the second PC interface control circuits 21 a and 21 b check the clock lines (a line comprising the terminal 22 b and the terminal 24 b, and a line comprising the terminal 22 b′ and the terminal 24 b′) and the data lines (a line comprising the terminal 22 c and 24 c, and a line comprising the terminal 22 c′ and the terminal 24 c′). When the clock lines are in the low state (hereinafter referred to as �L�), the first and the second PC interface control circuits 21 a and 21 b are prohibited from communicating with the PC controlling part 25. When the clock lines are in the high state (hereinafter referred to as �H�) and the data lines are �L�, the first and the second PC interface control circuits 21 a and 21 b are set to receive data from the PC controlling part 25. When the clock lines and the data lines are �H�, the first and the second PC interface control circuits 21 a and 21 b are set to transmit data to the PC controlling part 25. The clock signals are supplied to the PC controlling part 25 from the first and the second PC interface control circuits 21 a and 21 b, and the data is transmitted in synchronism with the clock signals between the first and the second PC interface control circuits 21 a and 21 b and the PC controlling part 25.
FIG. 3(b) illustrates a request signal, a clock signal and data 1 and data 2 used for the communication between the first and the second PC interface control circuits 21 a and 21 b and the control processing means 16. The request signal transmitted from the first and the second PC interface control circuits 21 a and 21 b to the control processing means 16 indicates the start of communication and generates a request for transmission when the signal changes to the �L� level from the �H� level. The control processing means 16 generates a clock signal and supplies it to the first and the second PC interface control circuits 21 a and 21 b when the control processing means 16 detects the request for transmission, and data is transmitted in synchronism with the clock signal between the first and the second PC interface control circuits 21 a and 21 b and the control processing means 16. The data signal 1, which comprises control information, such as a key code, data for setting a mouse movement speed and a signal relating to a dragging mode, is outputted to the first or the second PC interface control circuit 21 a or 21 b from the control processing means 16. The data 2, which comprises status information, such as a power on or off state, at the mouse input terminal 24 a and at the keyboard input terminal 24 a′ of the PC 23, are outputted to the control processing means 16 from the first or the second PC interface control circuit 21 a or 21 b. FIG. 4(a) is a plan view illustrating a control panel of a remote controller representing one embodiment of the input operation means 18. Reference numerals 29 a-29 k denote CH buttons (channel buttons), reference numeral 30 denotes a PC mode selection button, numerals 31 a-31 d denote direction indication buttons, and numeral 32 denotes an enter button. The buttons 29 a-29 k also operate as function selection buttons, in addition to channel buttons. The buttons 29 a-29 k have the functions, such as a mouse operation button, a left drag button of the mouse or a right drag button of the mouse, when they are used during the PC mode. The buttons 29 a-29 h also function as direction indication buttons when the remote controller operates in the PC input mode, and the early transmission function can give them the ability to move quickly to a goal. The mouse is moved in an oblique direction by using the buttons 29 a, 29 c, 29 f and 29 h. The button 29 i has a function similar to the enter button 32 and corresponds to the left button of a PC mouse. The F button 29 j is used to start the software keyboard function, whereby the software stored in the screen display processing means 19 is used to display a software keyboard on the screen of the CRT 15 in response to a control signal from the control processing means 16.
The D button 29 k emulates the dragging of the left button or the right button of the mouse. When the button 29 k is pressed, the indicator �DRAG� is displayed on the screen of the CRT 15, as shown in FIG. 5, and the dragging of the mouse can be performed by operating the direction indication buttons 29 a-29 d, 29 e-29 h, the drag mode being released when the button 29 k is pressed again. When the D button 29 k is pressed, the control processing means 16 generates a control signal corresponding to a command from the input operation means 18, and a signal for the indicator �DRAG� stored in the screen display processing means 19 is supplied to the CRT 15 through the video signal output circuit 13 for displaying �DRAG� on the screen thereof. Further, the control signal from the control processing means 16 is supplied to the cursor indication part 25 a of the PC controlling part 25 through the first PC interface control circuit 21 a so as to change the cursor indication part 25 a to the drag mode, and also the command from cursor indication part 25 a is supplied to the control processing means 16 for carrying out the drag mode.
An example of the operation for an internet WWW browser application using with the PC 23 will be explained. When the power source of the PC 23 is turned on, 5V is supplied to the first or the second PC interface control circuit 21 a or 21 b from the mouse input terminal 24 a or keyboard input terminal 24 a′, and the voltage of the input terminal of the circuit 21 a or 21 b is changed to the �H� level from the �L� level. When the circuit 21 a or 21 b detects the change, this change to the 5V power state is indicated to the control processing means 16 from the first or the second PC interface control circuit 21 a or 21 b. As a result, the control processing means 16 will recognize that the PC 23 is connected and will be placed in the PC input mode automatically. When the operation of the PC 23 is finished and the power of the PC 23 is turned off, the voltage of the input terminal of the first or the second PC interface control circuit 21 a or 21 b becomes zero, and the level of the input terminal thereof is changed to the �L� level from the �H� level. By detecting this change in the state of the circuit 21 a or 21 b and by supplying a signal indicating the change to the control processing means 16, the control processing means 16 turns to the ordinary television mode. The PC input mode or the ordinary television mode is selected by pressing the PC selection button 30.
The menu of the internet WWW browser application is displayed on the screen of the CRT 15, as shown in FIG. 5, at a start of operation of the PC 23. The direction indication buttons 31 a-31 d operate the mouse in the PC input mode. By operating the direction indication buttons 31 a-31 d to move the cursor 33 to �open� in the menu and pressing the enter button 32, the screen for inputting an address that is a URL (uniform resource locator) of the WWW internet is displayed, as shown in FIG. 6(a). Next, the F button 29 j of FIG. 4(a) is pressed and the control processing means 16 controls the screen display processing means 19 so as to display the software keyboard screen shown in FIG. 6(b). The letter �a� is initially selected as a default. Then, the alphanumeric character or the symbol to be inputted is selected from the screen by the direction indication buttons 31 a-31 d, and one of the characters is inputted in the address part on the screen by pressing the enter button 32. is inputted, the information relating to the WWW address is obtained by selecting �OK� with the cursor 33 and by pressing the enter button 32.
An example of the operation of each part relating to the operation of the mouse and the software keyboard will be explained. By pressing one of the direction indication buttons 31 a-31 d, the command that represents whether the key is pressed is outputted to the first PC interface control circuit 21 a from the control processing means 16. The cursor indication 33 is shifted by the information from the PC 23 as if an actual mouse were operated, when the first PC interface control circuit 21 a outputs a command that represents a required amount of movement of the mouse, a direction of movement of the mouse, etc., to the PC controlling part 25. In the case of the software keyboard, when a character �p� is selected from the selection screen and the enter button 32 is pressed, a key code is outputted to the second PC interface control circuit 21 b from the control processing means 16. The second interface control circuit 21 b will output a key code to the PC controlling part 25 as if the character �p� were inputted from an actual keyboard and the PC 23 displays �p� in the address part on the screen as shown in FIG. 6(b).
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