Keyboard with a wireless remote control receiver and a method of redefining a key function for remote control
First Claim
1. A personal computer system with a remote control function, comprising:
- a main computer unit;
a keyboard unit disposed to communicate with said main computer unit by using first and second signal lines, said keyboard unit generating a re-send signal when a communication request signal for remote control is provided from said main computer unit;
a remote control receiver disposed to detect the re-send signal, said remote control receiver generating a control signal upon a detection of the re-send signal; and
a communication control section disposed to control a communication of said keyboard unit with said main computer unit through said first and second signal lines, said communication control section blocking the communication of said keyboard unit with said main computer unit in response to the control signal to allow said remote control receiver to receive information for redefining a key function for remote control from said main computer unit, said communication control section comprising;
a data control portion electrically connected to shift said first signal line between electrically activated and electrically inactivated states, said data control portion controlling said first signal line in response to the control signal, said data control portion comprising;
first and second load resistors connected in parallel on said first signal line and supplied with a first source voltage,a first inverter having an input terminal disposed to receive a data signal from the keyboard unit,a first NAND gate having two input terminals, one of the terminals being disposed to receive an output of the first inverter and the other terminal being disposed to receive the control signal,a second inverter having an input terminal disposed to receive an output of the first NAND gate, anda second NAND gate having two input terminals, one of the terminals being disposed to receive an output of the second inverter and the other terminal being disposed receive the control signal, anda clock control portion electrically connected to shift said second signal line between electrically activated and electrically inactivated states, said clock control portion controlling said second signal line in response to the control signal, said clock control portion comprising;
third and fourth load resistors connected in parallel on said second signal line and supplied with a second source voltage,a third inverter having an input terminal disposed to receive a clock signal from the keyboard unit,a third NAND gate having two input terminals, one of the terminals being disposed to receive an output of the third inverter and the other terminal being disposed to receive the control signal,a fourth inverter having an input terminal disposed to receive an output of the third NAND gate, anda fourth NAND gate having two input terminals, one of the terminals being disposed to receive an output of the fourth inverter and the other terminal being disposed receive the control signal.
1 Assignment
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Accused Products
Abstract
A keyboard for a personal computer system has a remote control function. The personal computer system has a keyboard unit for communicating with a main computer unit by using signal lines connected therebetween and generating a re-send signal when a communication request signal for remote control is provided from the main computer unit. A communication control section controls a communication of the keyboard unit with the main computer unit in response to the control signal, so as to allow the remote control receiver to receive information for redefining of a key function for the remote control. The keyboard can redefine a key function for remote control in accordance with several sorts of programs.
137 Citations
20 Claims
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1. A personal computer system with a remote control function, comprising:
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a main computer unit; a keyboard unit disposed to communicate with said main computer unit by using first and second signal lines, said keyboard unit generating a re-send signal when a communication request signal for remote control is provided from said main computer unit; a remote control receiver disposed to detect the re-send signal, said remote control receiver generating a control signal upon a detection of the re-send signal; and a communication control section disposed to control a communication of said keyboard unit with said main computer unit through said first and second signal lines, said communication control section blocking the communication of said keyboard unit with said main computer unit in response to the control signal to allow said remote control receiver to receive information for redefining a key function for remote control from said main computer unit, said communication control section comprising; a data control portion electrically connected to shift said first signal line between electrically activated and electrically inactivated states, said data control portion controlling said first signal line in response to the control signal, said data control portion comprising; first and second load resistors connected in parallel on said first signal line and supplied with a first source voltage, a first inverter having an input terminal disposed to receive a data signal from the keyboard unit, a first NAND gate having two input terminals, one of the terminals being disposed to receive an output of the first inverter and the other terminal being disposed to receive the control signal, a second inverter having an input terminal disposed to receive an output of the first NAND gate, and a second NAND gate having two input terminals, one of the terminals being disposed to receive an output of the second inverter and the other terminal being disposed receive the control signal, and a clock control portion electrically connected to shift said second signal line between electrically activated and electrically inactivated states, said clock control portion controlling said second signal line in response to the control signal, said clock control portion comprising; third and fourth load resistors connected in parallel on said second signal line and supplied with a second source voltage, a third inverter having an input terminal disposed to receive a clock signal from the keyboard unit, a third NAND gate having two input terminals, one of the terminals being disposed to receive an output of the third inverter and the other terminal being disposed to receive the control signal, a fourth inverter having an input terminal disposed to receive an output of the third NAND gate, and a fourth NAND gate having two input terminals, one of the terminals being disposed to receive an output of the fourth inverter and the other terminal being disposed receive the control signal.
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2. A computer system with a remote control function, comprising:
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a main computer unit; a keyboard unit electrically connected to said main computer unit by first and second signal lines, said keyboard unit generating a re-send signal when a communication request signal for remote control is provided from said main computer unit; a remote control receiver mounted on said keyboard unit, for generating a control signal upon detection of the re-send signal from said keyboard unit to said main computer unit; and a communication control unit coupled between said keyboard unit and said main computer unit through said first and second signal lines, for blocking communication of said keyboard unit with said main computer unit in response to the control signal to allow said remote control receiver to receive information from said main computer unit for redefining a key function for remote control. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A method of redefining a key function for remote control in a computer system comprising a main computer unit, a keyboard unit electrically connected to said main computer unit, a remote control receiver mounted on said keyboard unit, and a communication control unit coupled between said keyboard unit and said main computer unit, said method comprising the steps of:
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generating a communication request signal for remote control from said main computer unit during a communication with said keyboard unit; generating a re-send signal from said keyboard unit in response to the communication request signal; generating a control signal from said remote control receiver mounted on said keyboard unit upon detection of the re-send signal; intercepting communication of said keyboard unit with said main computer unit by said communication control unit coupled between said keyboard unit and said main computer unit in response to the control signal; and allowing said remote control receiver to communicate with said main computer unit for redefining said key function for remote control. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer system, comprising:
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a main computer unit; a keyboard unit electrically connected to said main computer unit by a cable for communication with said main computer unit, said keyboard unit generating a re-send signal when a communication request signal for remote control generated from said main computer unit is not recognized by said keyboard unit; a remote control receiver mounted on said keyboard unit and electrically connected to said main computer unit for communication with said main computer unit via said cable, said remote control receiver generating a control signal upon detection of the re-send signal from said keyboard unit to said main computer unit; and a communication control unit electrically coupled between said keyboard unit and said main computer unit via said cable, for blocking wire communication of said keyboard unit with said main computer unit in response to said control signal to permit wireless communication between a remote control transmitter and said main computer unit using said remote control receiver. - View Dependent Claims (18, 19, 20)
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Specification