Transceiver with battery saver and method of using same
First Claim
1. In a transceiver, the combination comprising:
- (a) a battery;
(b) a transmitter;
(c) a receiver;
(d) switch means connected between said battery and said transmitter and receiver;
(e) switch actuating means operative to operate said switch means between "on" and "off" condition;
(f) circuit means connecting said battery to said transmitter and receiver through said switch means; and
(g) a timer circuit connected to said receiver and transmitter and operative to transmit an actuation signal to said switch actuating means upon receipt on said receiver of a signal or during operation of said transmitter and to disable said switch actuating means and thereby maintain said switch means in an "off" condition during other periods to cut of power supply to said receiver and transmitter, said disabling being periodically interrupted for short intervals to provide power to said receiver and transmitter for such short intervals, said timer circuit enabling continued power supply through said switch means if an enabling signal is received by said receiver or said transmitter is operated a said timer circuit including timing means providing three timing periods comprising a sleep timer circuit having two timing periods, comprising (i) a relatively long duration "off" period in which said switch actuation means is disabled, (ii) a relatively short duration "on" period in which an actuation signal is provided to said switch actuation means to monitor said receiver to determine the existence of a signal to enable continued power supply, and a second timer having a third timing period comprising (iii) a relatively long "standby" period following termination of a transmission on said transmitter for receipt of a response on said receiver.
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Accused Products
Abstract
A portable transceiver has a battery saving feature which includes a timer, circuit which automatically cuts off the power supply to the receiver and transmitter for relatively long intervals and periodically turns on the power supply for relatively short intevals to check for transmission or receiver signals. If such signals are detected, the power supply continues to supply powers to the receiver and transmitter for the duration of the signals and for a short period thereafter. The transceiver also includes a batter voltage detection circuit which will cut off the battery power supply if the battery has discharge to a predetermined level , and which can be overridden in any emergency. The power supply is conveniently controlled by a pass device which must receive "operate" signals from both the timer circuit and the battery voltage detection circuit.
164 Citations
19 Claims
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1. In a transceiver, the combination comprising:
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(a) a battery; (b) a transmitter; (c) a receiver; (d) switch means connected between said battery and said transmitter and receiver; (e) switch actuating means operative to operate said switch means between "on" and "off" condition; (f) circuit means connecting said battery to said transmitter and receiver through said switch means; and (g) a timer circuit connected to said receiver and transmitter and operative to transmit an actuation signal to said switch actuating means upon receipt on said receiver of a signal or during operation of said transmitter and to disable said switch actuating means and thereby maintain said switch means in an "off" condition during other periods to cut of power supply to said receiver and transmitter, said disabling being periodically interrupted for short intervals to provide power to said receiver and transmitter for such short intervals, said timer circuit enabling continued power supply through said switch means if an enabling signal is received by said receiver or said transmitter is operated a said timer circuit including timing means providing three timing periods comprising a sleep timer circuit having two timing periods, comprising (i) a relatively long duration "off" period in which said switch actuation means is disabled, (ii) a relatively short duration "on" period in which an actuation signal is provided to said switch actuation means to monitor said receiver to determine the existence of a signal to enable continued power supply, and a second timer having a third timing period comprising (iii) a relatively long "standby" period following termination of a transmission on said transmitter for receipt of a response on said receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a transceiver, the combination comprising:
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(a) a battery; (b) a transmitter; (c) a receiver; (d) switch means connected between said battery and said transmitter and receiver; (e) switch actuating means operative to operate said switch means between "on" and "off" condition; (f) circuit means connecting said battery to said transmitter and receiver through said switch means; (g) a timer circuit connected to said receiver and operative to transmit an actuation signal to said switch actuating means upon receipt of a signal or during operation of said transmitter and to disable said switch actuating means and thereby maintain said switch means in an "off" condition during other periods, to cut off power supply to said receiver and transmitter, said disabling being periodically interrupted for short intervals to provide power to said receiver and transmitter for such short intervals and to enable continued operation if an enabling signal is received by said receiver or said transmitter is operated, said timer circuit including timing means providing three timing periods comprising a sleep timer circuit having two timing periods, comprising (i) a relatively long duration "off period in which said switch actuation means is disabled, (ii) a relatively short duration "on" period in which an actuation signal is provided to said switch actuation means to monitor said receiver to determine the existence of a signal to enable continued power supply, and a second timer having a third timing period comprising (iii) a relatively long "standby" period following termination of a transmission on said transmitter for receipt of a response on said receiver; (h) squelch means connected between said receiver and sleep timer circuit and adapted to limit the receiver output to signals having a predetermined signal strength whereby weak signals may be squelched; and (i) battery voltage detection means connected to said switch actuating means to provide a signal thereto enabling its operation to actuate said switch means into an "on" condition only when the battery voltage is above a predetermined reference value. - View Dependent Claims (12, 13, 14)
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15. In a method for operation of a transceiver having a rechargeable battery power supply, a receiver and a transmitter, the steps comprising:
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(a) turning the transceiver "on" to enable operation; (b) periodically providing power to the receiver and transmitter for intervals of relatively short duration; (c) determining whether, during said intervals, there is a signal being received on said receiver or being generated by said transmitter and, if so, continuing to supply power to said receiver and transmitter during the period in which such a signal continues and for a limited period of time after termination of a transmission on said transmitter for receipt of a response on said receiver; and (d) determining whether the voltage of the battery power supply is above a predetermined voltage and, if not, disabling further power drain from said battery power supply. - View Dependent Claims (16, 17, 18, 19)
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Specification