Abstract: A receiver includes: an adjustment circuit that adjusts an electric potential of a midpoint provided on a side of the receiver such that the electric potential of the midpoint provided between a pair of signal lines and on the side of the receiver is identical with an electric potential of a midpoint provided between the pair of signal lines and on a side of the transmitter, the transmitter transmitting a plurality of image signals, a vertical synchronizing signal, and a horizontal synchronizing signal, and transmitting and receiving differential signals on the pair of signal lines; a control circuit that controls the velocity of rise and decay of the differential signals which flow on the pair of signal lines; and a cancel circuit that cancels crosstalk by the vertical synchronizing signal generated on the horizontal synchronizing signal by inputting the vertical synchronizing signal.

Abstract: An operation body having a pointing function with respect to information includes a chassis having a reflection face, a circuit charging an inner second battery when receiving an electrical power from outside through a terminal exposed from the chassis, and a circuit transmitting switch information to outside cordlessly. On the other hand, an information-input device includes a chassis supporting a keyboard, and an optical system that transmits a light to an operation body operated on the chassis and receives a reflected light of the light. The chassis supporting the keyboard has a recess housing the operation body. The operation portion may be housed in the recess. The second battery is charged when the operation body is housed. And a light emitting of the optical system is stopped when the operation body is housed.

Abstract: A digital audio signal, a channel clock, and a bit clock are transmitted to the receiving apparatus via a pair of signal lines. The digital audio signal is input to a D/A converter via a first comparator. The channel clock and the bit clock are received, separated with first and second separation circuits, and input to the D/A converter via the second and third comparators. A reference electrical potential of the second comparator is corrected such that it becomes half or approximately half of an amplitude of the channel clock depending on an electrical potential change of the output of a second differential signal receiving circuit. A system clock is generated based on the bit clock. The digital audio signal is converted into the analog audio signal based on the channel clock, the bit clock, and the system clock, and then the converted analog audio signal is output.

Abstract: A repeater device that is placed between a transmission device connected to a server device and a reception device connected to a console device that controls the server device. The repeater device repeats a signal between the transmission device and the reception device, and includes an equalizer amplifier that amplifies a signal that is received from the transmission device or another repeater device.

Abstract: A remote console unit includes a signal processing apparatus that receives an image signal from a computer main body and also sends and receives various signals other than the image signal to and from the computer main body through a cable for general purpose. Data input and/or output can be performed remotely to and from the computer main body through the cable.

Abstract: A starting device includes a first transform device that restores a first transfer signal, which is converted from an input signal supplied from an input device, to the input signal, and outputs the input signal to a computer, and a power connecting device that starts the computer when the input signal restored by the first transform device includes a starting signal.

Abstract: A cordless pointing device used for moving a pointer displayed on a display screen and selecting information displayed on the display screen. The cordless pointing device includes an operation device having an optical reflection surface, a light emitting and receiving unit, which is a separate unit from the operation device, and emits a light to the optical reflection surface of the operation device and receives the light reflected on the optical reflection surface of the operation device, a switch for generating an instruction on information pointed by the pointer, and a control unit that moves the pointer according to a movement of the operation device detected by the light emitting and receiving unit when the light is received and detects the instruction given by the switch.

Abstract: A digital audio signal, a channel clock, and a bit clock are transmitted to the receiving apparatus via a pair of signal lines. The digital audio signal is input to a D/A converter via a first comparator. The channel clock and the bit clock are received, separated with first and second separation circuits, and input to the D/A converter via the second and third comparators. A reference electrical potential of the second comparator is corrected such that it becomes half or approximately half of an amplitude of the channel clock depending on an electrical potential change of the output of a second differential signal receiving circuit. A system clock is generated based on the bit clock. The digital audio signal is converted into the analog audio signal based on the channel clock, the bit clock, and the system clock, and then the converted analog audio signal is output.

Abstract: A receiver includes: an adjustment circuit that adjusts an electric potential of a midpoint provided on a side of the receiver such that the electric potential of the midpoint provided between a pair of signal lines and on the side of the receiver is identical with an electric potential of a midpoint provided between the pair of signal lines and on a side of the transmitter, the transmitter transmitting a plurality of image signals, a vertical synchronizing signal, and a horizontal synchronizing signal, and transmitting and receiving differential signals on the pair of signal lines; a control circuit that controls the velocity of rise and decay of the differential signals which flow on the pair of signal lines; and a cancel circuit that cancels crosstalk by the vertical synchronizing signal generated on the horizontal synchronizing signal by inputting the vertical synchronizing signal.

Abstract: A server system includes at least one server, a signal processing unit that enables to operate said at least one server with a set of console, and a chassis having slots and a circuit board, said at least one server or the signal processing unit being attachable and detachable to any of the slots, the circuit board having interconnection lines connecting the slots. Said at least one server and the signal processing unit being connected via an interface that allows plug and play connectivity. Thus, it is possible to construct the server system without external cables. In addition, when a server is newly added to or removed from the system or, it is no longer necessary to power of the other servers. This makes it possible to facilitate system construction and management.

Abstract: A switching device for controlling a connection between a private computer, a shared computer, and a terminal, including: a connecting unit that connects each terminal to a corresponding private computer in a default status, and switches a connection destination of the terminal to a private computer corresponding to the terminal or the shared computer when a connection switching request transmitted from the terminal has been received; and a security unit that executes for each terminal, identification processing on the data that has been received from any one terminal and output to the at least one private computer or the shared computer.

Abstract: A starting device includes a first transform device that restores a first transfer signal, which is converted from an input signal supplied from an input device, to the input signal, and outputs the input signal to a computer, and a power connecting device that starts the computer when the input signal restored by the first transform device includes a starting signal.

Abstract: A repeater device that is placed between a transmission device connected to a server device and a reception device connected to a console device that controls the server device. The repeater device repeats a signal between the transmission device and the reception device, and includes an equalizer amplifier that amplifies a signal that is received from the transmission device or another repeater device.

Abstract: An operation body having a pointing function with respect to information includes a chassis having a reflection face, a circuit charging an inner second battery when receiving an electrical power from outside through a terminal exposed from the chassis, and a circuit transmitting switch information to outside cordlessly. On the other hand, an information-input device includes a chassis supporting a keyboard, and an optical system that transmits a light to an operation body operated on the chassis and receives a reflected light of the light. The chassis supporting the keyboard has a recess housing the operation body. The operation portion may be housed in the recess. The second battery is charged when the operation body is housed. And a light emitting of the optical system is stopped when the operation body is housed.

Abstract: A movable console device having a rack-mount configuration, including a console section and a mount section. The console section includes a keyboard and a display, and is provided with a receiving portion for receiving the keyboard and the display. The mount section is provided for movably mounting the console section onto a rack structure. A display support mechanism is provided for supporting the display on the console section to be displaceable between a non-operating position in which the display is received inside the receiving portion and an operating position in which the display extends outside the receiving portion. A keyboard support mechanism is provided for supporting the keyboard on the console section to be displaceable between a first position in which the keyboard is received inside the receiving portion and a second position different from the first position.

Abstract: A remote console unit includes a signal processing apparatus that receives an image signal from a computer main body and also sends and receives various signals other than the image signal to and from the computer main body through a cable for general purpose. Data input and/or output can be performed remotely to and from the computer main body through the cable.

Abstract: A remote unit that is connected to a server with a cable, and receives and displays an image signal transmitted from the server, the remote unit includes a receiving portion that receives a signal transmitted via the cable and adjusts a gain of the signal, a voltage detection portion that receives an automatic adjusting signal for adjusting the gain and detects a received voltage of the signal, and a control portion that obtains a length of the cable with the received voltage and adjusts the gain of the receiving portion with the length obtained.

Abstract: A cordless pointing device used for moving a pointer displayed on a display screen and selecting information displayed on the display screen. The cordless pointing device includes an operation device having an optical reflection surface, a light emitting and receiving unit, which is a separate unit from the operation device, and emits a light to the optical reflection surface of the operation device and receives the light reflected on the optical reflection surface of the operation device, a switch for generating an instruction on information pointed by the pointer, and a control unit that moves the pointer according to a movement of the operation device detected by the light emitting and receiving unit when the light is received and detects the instruction given by the switch.

Abstract: A server system includes at least one server, a signal processing unit that enables to operate said at least one server with a set of console, and a chassis having slots and a circuit board, said at least one server or the signal processing unit being attachable and detachable to any of the slots, the circuit board having interconnection lines connecting the slots. Said at least one server and the signal processing unit being connected via an interface that allows plug and play connectivity. Thus, it is possible to construct the server system without external cables. In addition, when a server is newly added to or removed from the system or, it is no longer necessary to power of the other servers. This makes it possible to facilitate system construction and management.

Abstract: A movable console device having a rack-mount configuration, including a console section and a mount section. The console section includes a keyboard and a display, and is provided with a receiving portion for receiving the keyboard and the display. The mount section is provided for movably mounting the console section onto a rack structure. A display support mechanism is provided for supporting the display on the console section to be displaceable between a non-operating position in which the display is received inside the receiving portion and an operating position in which the display extends outside the receiving portion. A keyboard support mechanism is provided for supporting the keyboard on the console section to be displaceable between a first position in which the keyboard is received inside the receiving portion and a second position different from the first position.