Computer signal transmission system
AssigneeAdder Technology Limited
InventorsAdrian Christopher Dickens, Nigel Anthony Dickens, Philip Edward Hudson
Life of this patent
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Abstract
A system for transmitting electrical signals between a computer and peripherals along a twisted pair cable. The system includes a computer interface, a peripheral interface and a twisted pair cable in communication between the computer interface and the peripheral interface. Video and audio signals from the computer are transmitted via the twisted pair cable to the peripherals. Peripheral signals can also be communicated between the computer and peripherals via the twisted pair cable.
Claims28
A system for transmitting electrical signals between a computer and peripherals along a twisted pair cable, comprising:
- a computer interface;
- a multiplexer associated with the computer interface;
- a peripheral interface;
- and
- a twisted pair cable including a plurality of twisted pair lines, the twisted pair cable being in communication between the computer interface and the peripheral interface, in which a red, a green and a blue video colour signal, a horizontal and a vertical video syuchronisation signal and at least one audio signal from the computer are transmitted via three twisted pair lines of the cable to the peripherals via the peripheral interface, and in which the multiplexer multiplexes one of the video synchronization signals and either one of the video colour signals, or said at least one audio signal, for transmission via one of the three twisted pair lines.
Apparatus for transmitting a multiplexed video synchronisation signal and an audio signal from a computer to a video display unit and an audio output, comprising:
- a signal combiner which receives a video synchronisation signal from a video output of a computer;
- a sampler which samples the audio signal and communicates the sampled audio signal to the signal combiner;
- a twisted pair cable connected at a first end to the signal combiner;
- and
- a signal separator connected to a second end of the twisted pair cable, in which the signal combiner modulates the amplitude of the video synchronisation signal with the sampled audio signal and the signal separator provides separate transmitted video synchronisation and audio signals to the video display unit and the audio output respectively.
A system for transmitting electrical signals between a computer and peripherals along a twisted pair cable, comprising:
- a computer interface;
- a multiplexer associated with the computer interface
- a peripheral interface;
- and
- a twisted pair cable in communication between the computer interface and the peripheral interface, in which said multiplexer multiplexes a video synchronisation signal and either a video colour signal or an audio signal from the computer so that the video synchronisation signal, the video color signal and the audio signal are transmitted via a single twisted pair line of the twisted pair cable to the peripherals.
A method for transmitting electrical signals between a computer interface and a peripheral interface, comprising:
- providing a twisted pair cable connected between the computer interface and the peripheral interface, the twisted pair cable including a plurality of twisted pair lines;
- multiplexing a horizontal or a vertical synchronization signal and either a red, green or blue video colour signal or at least one audio signal;
- and
- transmitting the red, green and blue video colour signals, the horizontal and a vertical video synchronisation signals and the audio signal from the computer interface to the peripheral interface via three twisted pair lines of the cable.
A method for transmitting electrical signals between a computer interface and a peripheral interface, comprising:
- providing a twisted pair cable connected between the computer interface and the peripheral interface;
- multiplexing a video synchronisation signal and either a video colour signal or an audio signal and
- transmitting the video colour signal, the video synchronisation signal and the audio signal from the computer interface to the peripheral interface via a single twisted pair line of the cable.
Dependencies are inferred from the claim text.