Battery operated radio receivers having power save by reducing active reception time
First Claim
1. A method comprising:
- (a) activating a receive path at a predetermined time instant in a frame before the start of a data-detection time interval of said frame, thus beginning a pre-conditioning period;
(b) performing during said pre-conditioning period pre-conditioning functions with respect to a receiver;
(c) detecting during said pre-conditioning period predetermined characteristics of a received signal, said predetermined characteristics affected by one or more of said pre-conditioning functions;
(d) deactivating said receive path at a time instant later than said predetermined time instant until the start of the data-detection time interval, thus terminating said pre-conditioning period prior to the start of said data-detection time interval, and then reactivating said receive path for the data-detection time interval, in the event that said predetermined characteristics are within corresponding thresholds; and
(e) in the event that said predetermined characteristics are outside said corresponding thresholds repeating stems (b) and (c) until stet) (d) can be performed.
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Accused Products
Abstract
A battery-powered portable radio receiver and a method of operating the battery-powered radio receiver during Standby Mode in order to decrease battery-current drain is provided. In Standby Mode, a receive path of the radio receiver is activated during a data-detection time interval for the detection of data destined for selected receivers, and a preconditioning time interval for performing pre-conditioning functions with respect to the receiver before the data-detection time interval. The method includes: (a) activating the receive path at a predetermined time instant before the start of the data-detection time interval to perform the pro-conditioning functions with respect to the receiver, (b) detecting a predetermined characteristic of the received signal affected by each of the pre-conditioning functions; (c) comparing each of the predetermined characteristics with e threshold; (d) where the predetermined characteristics are within their respective thresholds, deactivating the receive path until the start of the data-detection time interval, and then reactivating the receive path fur the data-detection time interval; and (e) where the predetermined characteristics are outside their respective thresholds, continuing the pre-conditioning functions until the predetermined characteristics are within their respective thresholds, then deactivating the receive path until the start of the data-detection time interval, and then reactivating the receive path for the data-detection time interval.
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Citations
26 Claims
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1. A method comprising:
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(a) activating a receive path at a predetermined time instant in a frame before the start of a data-detection time interval of said frame, thus beginning a pre-conditioning period;
(b) performing during said pre-conditioning period pre-conditioning functions with respect to a receiver;
(c) detecting during said pre-conditioning period predetermined characteristics of a received signal, said predetermined characteristics affected by one or more of said pre-conditioning functions;
(d) deactivating said receive path at a time instant later than said predetermined time instant until the start of the data-detection time interval, thus terminating said pre-conditioning period prior to the start of said data-detection time interval, and then reactivating said receive path for the data-detection time interval, in the event that said predetermined characteristics are within corresponding thresholds; and
(e) in the event that said predetermined characteristics are outside said corresponding thresholds repeating stems (b) and (c) until stet) (d) can be performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable radio receiver comprising:
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data-detection circuitry in a receive path adapted to detect data destined for a selected receiver;
pre-conditioning circuitry in said receive path adapted to pre-condition said radio receiver using pre-conditioning functions during a pre-conditioning period; and
control circuitry coupled to said data-detection circuitry and said pre-conditioning circuitry, said control circuitry adapted to activate said receive path for said pre-conditioning period, to deactivate at least a part of said receive path during a time interval in a frame that precedes a data-detection time interval of said frame thus terminating said pre-conditioning period prior to said data-detection time interval when predetermined characteristics of a signal received during said frame are within corresponding thresholds and to reactivate said receive path for said data-detection time interval, each of said predetermined characteristics affected by one or more of said preconditioning functions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising activating a receive path of a receiver at a predetermined time instant in a frame before the start of a data detection time interval of said frame, thus beginning a conditioning period comprising:
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during said pre-conditioning period, estimating predetermined characteristics of a signal received by said receiver during said frame, said predetermined characteristics affected by pre-conditioning functions performed on said receiver during said pre-conditioning period; and
deactivating at least part of said receive path until the start of said data-detection time interval, thus terminating said pre-conditioning period prior to the start of said data-detection time interval, in the event that said predetermined characteristics are within corresponding thresholds. - View Dependent Claims (22, 23)
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24. A portable radio receiver comprising:
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data-detection circuitry in a receive path adapted to detect data destined for a selected receiver;
pre-conditioning circuitry in said receive path adapted to pre-condition said radio receiver using pre-conditioning functions during a pre-conditioning period; and
control circuitry coupled to said data-detection circuitry and said pre-conditioning circuitry, said control circuitry able to activate said receive path for said pre-conditioning period and to deactivate at least part of said receive path until the start of a data-detection time interval of a frame thus terminating said pre-conditioning period prior to said data-detection time interval when predetermined characteristics of a signal received by said receive path during said frame are within corresponding thresholds, each of said predetermined characteristics affected by one or more of said preconditioning functions. - View Dependent Claims (25, 26)
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Specification