Infrared transmitter and receiver and method
First Claim
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1. An apparatus for transmitting control signals to a receiving device for operating a video system, comprising:
- a control signal generator for generating a control signal having a data pattern containing multiple identical data blocks interspersed with quiescent periods, said multiple data blocks being arranged in a pattern unique for the control signal and each of the data blocks being of a predetermined length for receipt by the receiver, with each control signal further including validation information to enable signal validation by the receiver; and
,a transmitter coupled to the control signal generator for transmitting the signal, wherein the unique pattern allows the receiving device to receive at least one data block from the transmitter without interference from signals from at least one other transmitter.
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Abstract
An infrared remote-control system and method for the simultaneous transmission of data from two or more separate hand transmitters to a single remote-control receiver is disclosed. Interference between transmitted signals is eliminated by interlacing control signals with quiescent periods during transmission. The control signals are received and validated by the receiver based on the quiescent periods.
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Citations
20 Claims
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1. An apparatus for transmitting control signals to a receiving device for operating a video system, comprising:
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a control signal generator for generating a control signal having a data pattern containing multiple identical data blocks interspersed with quiescent periods, said multiple data blocks being arranged in a pattern unique for the control signal and each of the data blocks being of a predetermined length for receipt by the receiver, with each control signal further including validation information to enable signal validation by the receiver; and
,a transmitter coupled to the control signal generator for transmitting the signal, wherein the unique pattern allows the receiving device to receive at least one data block from the transmitter without interference from signals from at least one other transmitter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for receiving control signals for operating a video system, comprising:
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a signal detector for detecting the control signals sent by a plurality of signal transmitting devices; and
,a signal decoder coupled to the signal detector for decoding and validating the control signals in a manner that identifies one signal from another, wherein each control signal has a data pattern containing multiple data blocks interspersed with quiescent periods being arranged in a pattern unique for that control signal, each of the data blocks being of a predetermined length for receipt by the receiving apparatus, and with each control signal further including validation information to enable signal validation by the receiving apparatus. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for allowing one signal receiver and a plurality of signal transmitters to operate a video system, comprising the steps of:
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in each transmitter, generating a control signal having a data pattern containing multiple identical data blocks arranged in a pattern unique for that transmitter, each of the data blocks being a predetermined length for receipt by the receiver and wherein the control signal further includes validation information to enable signal validation by the receiver, wherein each transmitter operates on the same frequency; transmitting the control signal from at least one transmitter to the receiver; detecting the transmitted control signal by the receiver; identifying, in the control signal, at least one data block based on its predetermined length; validating the control signal based on the validation information in the control signal to determine its accuracy. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification