Remote control transmitter and receiver for use with a television receiver
First Claim
1. A remote control system including a remote transmitter and a receiver for remotely controlling a plurality of functions of a controlled apparatus, said transmitter comprising:
- means for selecting one of said plurality of functions to be controlled;
means for generating pulse coded signals corresponding to selected functions;
means for generating function level control pulses, each function level control pulse representing an increment by which the level of the selected function is to be changed; and
means for transmitting said pulse coded signals and said function level control pulses to said receiver;
said receiver comprising;
means for receiving transmitted pulse coded signals and function level control pulses;
a plurality of function level setting means corresponding to said plurality of remotely controlled functions;
means for identifying and decoding received pulse coded signals and for activating the function level setting means for the selected function; and
means for identifying received function level control pulses and gating them to the function level setting means for the selected function;
whereby the level of the selected function is changed in proportion to the number of received function level control pulses.
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Accused Products
Abstract
A remote control transmitter and receiver for controlling all of the usual viewer-adjustable functions of a television receiver. A plurality of key/switches permit the viewer to select the channel to be tuned and the function to be controlled. Digital logic circuits generate pulse coded signals that identify channel numbers or controlled functions. Function level control pulses are generated by rotation of a code wheel connected to a thumb wheel to provide proportional control of selected functions. The pulse coded signals and function level control pulses are transmitted via an infrared optical link to the receiver where companion circuitry decodes the pulse coded signals and adjusts the levels of selected functions in response to the function level control pulses.
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Citations
22 Claims
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1. A remote control system including a remote transmitter and a receiver for remotely controlling a plurality of functions of a controlled apparatus, said transmitter comprising:
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means for selecting one of said plurality of functions to be controlled; means for generating pulse coded signals corresponding to selected functions; means for generating function level control pulses, each function level control pulse representing an increment by which the level of the selected function is to be changed; and means for transmitting said pulse coded signals and said function level control pulses to said receiver; said receiver comprising; means for receiving transmitted pulse coded signals and function level control pulses; a plurality of function level setting means corresponding to said plurality of remotely controlled functions; means for identifying and decoding received pulse coded signals and for activating the function level setting means for the selected function; and means for identifying received function level control pulses and gating them to the function level setting means for the selected function; whereby the level of the selected function is changed in proportion to the number of received function level control pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. In a television remote control transmitter of the kind wherein digitally encoded pulses are utilized to select television channels for tuning and to control various television receiver functions, the improvement comprising:
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a moveable member; means coupled to said moveable member for generating electrical pulses in response to movement of said moveable member, the number of electrical pulses generated being proportional to the movement of said moveable member; means coupled to said electrical pulse generating means for converting said electrical pulses into energy pulses suitable for wireless transmission to a receiver. - View Dependent Claims (18, 19, 20)
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21. A remote control transmitter comprising
a. a plurality of key switches, each key switch having a first terminal and a second terminal and operable to make electrical contact between said first and second terminals; -
b. a diode matrix having a plurality of input lines equal in number to the plurality of said key switches and a plurality of output lines equal in number to the number of binary digits required to uniquely identify each input line, each of said input lines being connected to the second terminal of one of said key switches; c. a digital clock for producing a master clock signal and a pulse gating signal; d. sequential gating means connected to the output lines of said diode matrix and to said digital clock for converting parallel binary coded signals on the output lines of said diode matrix into serial binary coded pulses; e. a light source; f. A first electrooptical transducer for receiving light energy from said light source and converting it into electrical energy; g. a rotatable disc interposed between said light source and said electrooptical transducer, said disc having spaced transparent and opaque regions for alternately passing and interrupting light from said light source to said electrooptical transducer upon rotation of said disc; h. a monostable multivibrator connected to said first electrooptical transducer for generating incrementing pulses of predetermined duration, one incrementing pulse being generated each time said disc is rotated an amount equal to one transparent portion and one opaque portion; i. a second electrooptical transducer for converting electrical energy into light energy for transmission to a receiver; j. driver means for said second electrooptical transducer connected to said sequential gating means, to said monostable multivibrator, and to said digital clock for pulse energizing said second electrooptical transducer at said master clock frequency in accordance with said serial binary coded pulses and said incrementing pulses.
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22. A receiver for use with a remote control transmitter of the kind wherein digitally encoded pulses are utilized to select functions to be proportionally controlled and incrementing pulses are utilized to proportionally adjust the level of selected functions, said receiver comprising:
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means for receiving digitally encoded pulses and incrementing pulses from a remote transmitter; means for discriminating between digitally encoded pulses and incrementing pulses; means for converting digitally encoded pulses into parallel digital signals; a plurality of digital counters, one for each function to be proportionally controlled; digital-to-analog conversion means for producing an analog control voltage proportional to the digital count in each of said digital counters; means for decoding said parallel digital signals to selectively activate said digital counters; and means for gating incrementing pulses to said digital counters; whereby the digital count in said activated digital counter is incremented.
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Specification