US3745530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic control receiver
Assignee: Cooper Industries LLC
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Filing: 1971-06-07
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Granted: 1973-07-10
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Expires: 1991-06-07
Abstract
Abstract An acoustical control receiver is disclosed for receiving and responding to a transmitted coded acoustic signal having a plurality of space tones at one acoustic frequency with a data tone of a different acoustic frequency between successive space tones to provide control of an utilization device. The receiver includes an input circuit that receives the transmitted coded signal and responds to the space tones to turn on detecting and decoding means connected to the input means to detect and decode the data tones and provide a control signal for controlling the utilization device when a proper sequence of space tones is received and a proper sequence of data tones is decoded.
Inventors
- 👤 R Carman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:12
CPC Classifications
G; G08; G08C; G08C23/00; G08C23/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
227 words
An acoustical receiver for receipt of a coded acoustical control signal having a plurality of distinctive space tones arranged at predetermined intervals with a distinctive data tone between successive space tones, a combination of a predetermined number of said data tones and space tones providing such a coded acoustic signal to be decoded at said receiver, said receiver providing for control of an utilization device upon receipt of a properly coded acoustic control signal, comprising, in combination: input means for receiving said coded acoustical control signal; detecting means connected to said input means and responding to receipt of said coded acoustical control signal to provide first output signals in response to received space tones and second output signals in response to received data tones; decoding means connected to said detecting means for decoding said second output signals; and switch means connected to said detecting means and said decoding means and operable in response to each of said first output signals to enable decoding of said second output signals for a time period at lease as great as the time interval between successive space tones in said coded acoustical control signal, but substantially less than the duration of said acoustic coded signal whereby upon failure of receipt of at least one of said space tones said receiver means will be inhibited from acting upon further received data tones.
Claim 2
Dependent Claim
227 words
An acoustical receiver for receipt of a coded acoustical control signal having a plurality of distinctive space tones arranged at predetermined intervals with a distinctive data tone between successive space tones, a combination of a predetermined number of said data tones and space tones providing such a coded acoustic signal to be decoded at said receiver, said receiver providing for control of an utilization device upon receipt of a properly coded acoustic control signal, comprising, in combination: input means for receiving said coded acoustical control signal; detecting means connected to said input means and responding to receipt of said coded acoustical control signal to provide first output signals in response to received space tones and second output signals in response to received data tones; decoding means connected to said detecting means for decoding said second output signals; and switch means connected to said detecting means and said decoding means and operable in response to each of said first output signals to enable decoding of said second output signals for a time period at lease as great as the time interval between successive space tones in said coded acoustical control signal, but substantially less than the duration of said acoustic coded signal whereby upon failure of receipt of at least one of said space tones said receiver means will be inhibited from acting upon further received data tones.
Claim 3
Dependent Claim
99 words
The receiver of claim 1 wherein said switch means includes a switching circuit adapted to assume a first condition in response to said first output signals to permit such detection and decoding and a second condition in response to a reset signal to inhibit such detection and decoding; and a timing circuit connected to said switching circuit and operable in response to said first output signal to begin a timing cycle of duration at least as great as said time interval between successive space tones, and responsive to the end of said timing cycle to providE said reset signal.
Claim 4
Dependent Claim
42 words
The receiver of claim 2 wherein said detecting means includes inhibit means connected to said timing circuit and responsive to said first output signal to inhibit the beginning of the timing cycle of said timing circuit during receipt of a space tone.
Claim 5
Dependent Claim
50 words
The receiver of claim 3 wherein said detecting means further includes counter means connected to said inhibit means for counting each of the received space tones and generating a signal to stop the operation of said inhibit means when a predetermined number of space tones in a sequence are counted.
Claim 6
Dependent Claim
69 words
The receiver of claim 1 wherein said detecting means includes a space tone circuit for providing said first output signals, and at least one data tone circuit for providing said second output signals, said data tone circuits connected to said switch means and operable to provide said second output signal upon receipt of a data tone in response to receipt of said first output signal by said switch means.
Claim 7
Dependent Claim
82 words
The receiver of claim 5 wherein said coded acoustical control signal includes two data tones each at a distinctive acoustical frequency, and said detecting means includes two data tone circuits, each being responsive to one of said distinctive data tones to provide said second output signals, and further including means connected to each of said data tone filters to inhibit the operation of one of said data tone circuits when the other data tone circuit is detecting its respective distinctive data tone.
Claim 8
Dependent Claim
67 words
The receiver of claim 5 wherein said input means, said space tone circuit and said switch means are continuously connected during operation of said receiver to a source of electrical power, and wherein said switch means connects said data tone circuit and said detecting means to said source of power when, during operation of said receiver, said first output signal is generated by said space tone circuit.
Claim 9
Dependent Claim
45 words
The receiver of claim 1 wherein said detecting means further includes counter means for counting each of the received space tones and generating a signal to stop the operation of said decoding means when a predetermined number of space tones in a sequence are counted.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |