US3552520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detecting and transmitting system with interval timing means
Assignee: United States Department of the Navy
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Filing: 1968-02-27
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Granted: 1971-01-05
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Expires: 1988-02-27
Abstract
Abstract A detector provides a signal for switching on the power supply of a proximately positioned transmitter upon the detection of desired information. A signal representative of the desired information is transmitted and, at predetermined times thereafter, coded signature signals are produced for transmission, these latter signals being supplied by a code generator upon the receipt thereto of pulses from a one-shot and/or repetitive interval timer. The system consumes no power in the standby mode.
Inventors
- 👤 Henry Naubereit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:54
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/14
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
147 words
An apparatus for detecting and transmitting acoustic information comprising: detecting means for detecting an acoustic signal and providing at a first output terminal a first signal indicative of the detected acoustic signal and at a second output terminal a second signal indicative of predetermined characteristics of the detected acoustic signal; transmitting means for transmitting information indicative of the acoustic signal connected to the first output terminal for receiving as an input signal said first signal of said detecting means; power supply means for supplying power to said transmitting means; and switching means interposed and connected between the second output terminal of said detecting means, an output terminal of said power supply means and an input terminal of said transmitting means for preventing the radiation of said information from said transmitting means in the absence of said second signal from said second output terminal of said detecting means.
Claim 2
Independent Claim
147 words
An apparatus for detecting and transmitting acoustic information comprising: detecting means for detecting an acoustic signal and providing at a first output terminal a first signal indicative of the detected acoustic signal and at a second output terminal a second signal indicative of predetermined characteristics of the detected acoustic signal; transmitting means for transmitting information indicative of the acoustic signal connected to the first output terminal for receiving as an input signal said first signal of said detecting means; power supply means for supplying power to said transmitting means; and switching means interposed and connected between the second output terminal of said detecting means, an output terminal of said power supply means and an input terminal of said transmitting means for preventing the radiation of said information from said transmitting means in the absence of said second signal from said second output terminal of said detecting means.
Claim 3
Independent Claim
150 words
An apparatus for detecting and transmitting acoustic information comprising: detecting means for detecting an acoustic signal and having at least a first and a second output terminal; transmitting means for transmitting a signal connected to the first output terminal of said detecting means; power supply means for supplying power to said transmitting means; switching means interposed and connected between the second output terminal of said detecting means, an output terminal of said power supply means and an input terminal of said transmitting means for preventing the radiation of information from said transmitting means in the absence of a signal emanating from said second output terminal of said detecting means; and means interposed between said switching means and said transmitting means for providing a signal to said transmitting means at predetermined times after the receipt of a signal by said switching means emanating from said second output of said detecting means.
Claim 4
Independent Claim
150 words
An apparatus for detecting and transmitting acoustic information comprising: detecting means for detecting an acoustic signal and having at least a first and a second output terminal; transmitting means for transmitting a signal connected to the first output terminal of said detecting means; power supply means for supplying power to said transmitting means; switching means interposed and connected between the second output terminal of said detecting means, an output terminal of said power supply means and an input terminal of said transmitting means for preventing the radiation of information from said transmitting means in the absence of a signal emanating from said second output terminal of said detecting means; and means interposed between said switching means and said transmitting means for providing a signal to said transmitting means at predetermined times after the receipt of a signal by said switching means emanating from said second output of said detecting means.
Claim 5
Dependent Claim
69 words
Apparatus according to claim 2 wherein said means interposed between said switching means and said transmitting means comprises: timing means for providing an electrical pulse at predetermined times after said switching means receives a signal emanating from the second output of said detecting means; and code generator means for supplying a coded signature signal to said transmitting means upon the receipt of said electrical pulse from said timing means.
Claim 6
Dependent Claim
50 words
The apparatus according to claim 3 wherein said timing means comprises: a first timer adapted to provide but one pulse a predetermined time after the receipt thereby of a signal emanating from said switching means; and a second timer adapted to repetitively provide a pulse at fixed predetermined time intervals.
Claim 7
Dependent Claim
17 words
Apparatus according to claim 4 wherein said second timer provides a signal to disable said switching means.
Claim 8
Dependent Claim
29 words
Apparatus according to claim 4 wherein said pulse provided by said first timer occurs a predetermined time before the first of said repetitive pulses provided by said second timer.
Claim 9
Dependent Claim
68 words
Apparatus according to claim 1 wherein said switching means comprises: first transistor means for receiving said second signal and providing at an output terminal a control signal; and second transistor means electrically connected between said power supply means and said transmitting means and further connected with said output terminal of said first transistor means for conducting upon the receipt of said conTrol signal from said first transistor means.
Claim 10
Independent Claim
199 words
An apparatus for detecting and transmitting acoustic information comprising: detecting means for detecting an acoustic signal having at least a first and a second output terminal; transmitting means connected to the first output terminal of said detecting means; power supply means for supplying power to said transmitting means; switching means for preventing the radiation of information from said transmitting means in the absence of a signal emanating from said second output terminal of said detecting means; said switching means including a first means connected to said second output terminal of said detecting means for receiving a signal to be switched; said switching means including a second means electrically connected with an output terminal of said first means and being interposed and connected between an output terminal of said power supply means and an input terminal of said transmitting means for being rendered conductive upon the receipt of an electrical signal from said first means; and said switching means including a time delay means interposed between the output terminal of said first means and the input terminal of said second means for delaying said electrical signal from said first means to said second means for a predetermined period of time.
Claim 11
Independent Claim
199 words
An apparatus for detecting and transmitting acoustic information comprising: detecting means for detecting an acoustic signal having at least a first and a second output terminal; transmitting means connected to the first output terminal of said detecting means; power supply means for supplying power to said transmitting means; switching means for preventing the radiation of information from said transmitting means in the absence of a signal emanating from said second output terminal of said detecting means; said switching means including a first means connected to said second output terminal of said detecting means for receiving a signal to be switched; said switching means including a second means electrically connected with an output terminal of said first means and being interposed and connected between an output terminal of said power supply means and an input terminal of said transmitting means for being rendered conductive upon the receipt of an electrical signal from said first means; and said switching means including a time delay means interposed between the output terminal of said first means and the input terminal of said second means for delaying said electrical signal from said first means to said second means for a predetermined period of time.
Claim 12
Dependent Claim
30 words
Apparatus according to claim 7 further including a flip-flop electrically connected to said first means for applying a signal to the input thereof thereby to render said first means conductive.
Claim 13
Dependent Claim
46 words
Apparatus according to claim 7 wherein: said first means and said second means include transistors; and a resistor is connected at one end thereof to the collector terminal of the first transistor and at the other end thereof to the emitter terminal of the second transistor.
Claim 14
Dependent Claim
46 words
Apparatus according to claim 10 wherein: a first resistor is connected at one end to the collector terminal of said first transistor and is connected at the other end thereof to the base of said second transistor; and a capacitor is connected across said first resistor.
Claim 15
Dependent Claim
36 words
Apparatus according to claim 11 wherein: a second transistor is connected between the base of said first transistor and the output terminal of a flip-flop; and the emitter of said first transistor is connected to ground.
Claim 16
Dependent Claim
16 words
Apparatus according to claim 12 wherein said first and said second transistors are of opposite polarity.
Claim 17
Dependent Claim
49 words
Apparatus according to claim 4 wherein said first timer comprises: time delay means adapted to provide an electrical signal a predetermined time after the receipt thereby of a first input electrical signal; and pulsing means connected with and responsive to said time delay means for providing an output pulse.
Claim 18
Dependent Claim
53 words
Apparatus according to claim 14 wherein said pulsing means includes: a four-layer diode; and a transistor having its base connected to said time delay means and its emitter connected to one side of said four-layer diode, said transistor being rendered conductive upon the receipt of said electrical signal from said time delay means.
Claim 19
Dependent Claim
31 words
Apparatus according to claim 15 wherein: a first resistor is connected between ground and the other side of said four-layer diode; and a pulse-shaping network is connected across said first resistor.
Claim 20
Dependent Claim
59 words
Apparatus according to claim 16 further including a second resistor for receiving a second input signal at one end thereof and connected at the other end thereof to the collector of said transistor, the ohmic value of said resistor being of sufficient magnitude to provide a sustaining current through said four-layer diode such that said four-layer diode cannot reset.
Claim 21
Dependent Claim
68 words
Apparatus according to claim 4 wherein said second timer comprises: time-delay means for receiving a first input electrical signal and for providing an electrical signal in response thereto at the output terminal thereof a predetermined time after the Receipt of said input signal; and pulsing means connected with said time delay means and responsive to the output electrical signal thereof for providing a pulse at predetermined time intervals.
Claim 22
Dependent Claim
63 words
Apparatus according to claim 18 wherein said pulsing means includes: a transistor; and a four-layer diode, one end of said diode being connected to the base of said transistor and the other end of said diode being connected to the output terminal of said electrical time delay means, whereby said transistor is rendered conductive upon the discharge of current through said four-layer diode.
Claim 23
Dependent Claim
46 words
Apparatus according to claim 19 wherein said time delay means comprises: a variable resistor connected at one end thereof to one end of said four-layer diode; and a variable capacitor connected between ground and the common junction point of said variable resistor and said four-layer diode.
Claim 24
Dependent Claim
59 words
Apparatus according to claim 20 further including: a first resistor for receiving a second input signal at one end thereof and connected at one end thereof to the collector of said transistor; a capacitor connected at one end thereof to the collector of said transistor; and a second resistor connected between ground and the other end of said capacitor.
Claim 25
Dependent Claim
37 words
Apparatus according to claim 21 further including first and second diodes, each of said diodes connected across said second resistor such that the polarity of said first diode is opposite from the polarity of said second diode.
Claim 26
Dependent Claim
45 words
Apparatus according to claim 22 wherein: said capacitor and said first and second diodes comprise a pulse forming network; and said variable resistance has an ohmic value of sufficient magnitude to limit the current through said four-layer diode thereby to permit said diode to reset.
References Cited (Backward Citations)
US3373526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |