Patent CH147614A successfully refreshed from Google Patents.
US4535333A
Expired / Lapsed
US
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Transmitter and receiver for controlling remote elements
Assignee: The Chamberlain Group LLC
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Filing: 1982-09-23
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Granted: 1985-08-13
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Expires: 2002-09-23
Abstract
Abstract Transmitters and receivers for controlling remote elements which use a synchronous serial transmission format and which allows changes in coding to be automatically made between the receiver and transmitter and wherein the code is stored in memories of the transmitter and receiver and wherein the receiver can generate and transmit a new code with a light emitting diode so as to change the code in the transmitter. The transmitter and the receiver use micro-computers which are suitably programmed and include non-volatile memories.
Inventors
- 👤 Joseph W. Twardowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:41
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/16; G08C19/28; G07; G07C; G07C9/00; G07C9/00174; G07C9/00817; G07C9/00857
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
168 words
Apparatus for controlling a receiver with a remote radio frequency transmitter comprising a first micro-processor and a first memory means in said receiver for storing at least one address code, non-radio frequency transmitting means in said receiver, switch means for energizing said non-radio frequency transmitting means to transmit an address code, a non-radio frequency receiving means in said transmitter for receiving said address code, a second micro-processor and second memory means in said transmitter for storing said address code, radio frequency radiating means in said transmitter for radiating said address code, receiving means in said receiver for receiving said radio frequency radiated address code, said first micro-processor in said receiver comparing the received address code with the address code stored in said first memory, an output circuit energized by said comparing means when said addresses are the same, wherein said first memory means comprises a non-volatile memory and a programmable read only memory and said second memory means comprises a non-volatile memory and a programmable read only memory.
Claim 2
Dependent Claim
168 words
Apparatus for controlling a receiver with a remote radio frequency transmitter comprising a first micro-processor and a first memory means in said receiver for storing at least one address code, non-radio frequency transmitting means in said receiver, switch means for energizing said non-radio frequency transmitting means to transmit an address code, a non-radio frequency receiving means in said transmitter for receiving said address code, a second micro-processor and second memory means in said transmitter for storing said address code, radio frequency radiating means in said transmitter for radiating said address code, receiving means in said receiver for receiving said radio frequency radiated address code, said first micro-processor in said receiver comparing the received address code with the address code stored in said first memory, an output circuit energized by said comparing means when said addresses are the same, wherein said first memory means comprises a non-volatile memory and a programmable read only memory and said second memory means comprises a non-volatile memory and a programmable read only memory.
Claim 3
Dependent Claim
40 words
Apparatus according to claim 1 wherein said first micro-processor is programmed to operate as a pseudo random number generator to generate a plurality of different address codes to allow the address codes in said transmitter and receiver to be changed.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 2 wherein said non-radio frequency transmitting means is a light radiator.
Claim 5
Dependent Claim
18 words
Apparatus according to claim 3 wherein said non-radio frequency receiving means in said transmitter is a light detector.
Claim 6
Dependent Claim
18 words
Apparatus according to claim 2 wherein said non-radio frequency transmitting means in said receiver is an electrical conductor.
Claim 7
Dependent Claim
25 words
Apparatus according to claim 4 wherein said address code comprises a serial binary code of pulse length modulated form of a plurality of word lengths.
Claim 8
Dependent Claim
23 words
Apparatus according to claim 6 wherein said address code contains a binary check block for indicating whether a correct signal has been received.
Claim 9
Dependent Claim
20 words
Apparatus according to claim 6 wherein said address code contains a binary synchronizing block for synchronizing the transmitter and receiver.
Claim 10
Dependent Claim
13 words
Apparatus according to claim 6 wherein said address code contains a terminating block.
Claim 11
Dependent Claim
21 words
Apparatus according to claim 6 wherein said address code is repeated and each address code is separated by a blanking period.
Claim 12
Dependent Claim
20 words
Apparatus according to claim 2 including a first octal latch in said receiver which is connected to said first micro-processor.
Claim 13
Dependent Claim
13 words
Apparatus according to claim 2 including a second octal latch in said transmitter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |