US6208837B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective calling/receiving device
Assignee: Panasonic Holdings Corp
•
Filing: 1998-05-05
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Granted: 2001-03-27
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Expires: 2018-05-05
Abstract
Abstract The result of detection performed by a receiving electric-field level detection circuit 8 and the result of detection performed by an automatic gain setting circuit 9 are fed back to a timing signal generation circuit 10 which controls a pre-heat time of a selective calling/receiving device. As a result, the pre-heat time can be changed according to the state of propagation of radio waves, and hence the life of battery of the calling/receiving device can be increased.
Inventors
- 👤 Nozomi Koh
- 👤 Atsuhiko Hashigaya
- 👤 Hidenori Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:12
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0261; H04W52/0274; H04W52/028; H04W52/0283; H04W52/0225; H04W52/0245; H04W88/00; H04W88/02; H04W88/022; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A selective calling/receiving device comprising: a timing signal generation circuit for determining the control timing of intermittent receiving operations while ensuring a pre-heat time to render the device active by application of power to the device prior to a signal to be received, and a receiving electric-field level detection circuit for detecting a receiving electric-field level, wherein the timing signal generation circuit variably controls the pre-heat time so as to correspond to the receiving electric-field level detected by the receiving electric-field level detection circuit.
Claim 2
Dependent Claim
84 words
A selective calling/receiving device comprising: a timing signal generation circuit for determining the control timing of intermittent receiving operations while ensuring a pre-heat time to render the device active by application of power to the device prior to a signal to be received, and a receiving electric-field level detection circuit for detecting a receiving electric-field level, wherein the timing signal generation circuit variably controls the pre-heat time so as to correspond to the receiving electric-field level detected by the receiving electric-field level detection circuit.
Claim 3
Dependent Claim
53 words
The selective calling/receiving device of claim 1 , further comprising: a high-frequency amplifying circuit, and an automatic gain setting circuit for setting a gain of the high frequency amplifying circuit, and wherein the timing signal generation circuit variably controls the pre-heat time according to the gain set by the automatic gain setting circuit.
Claim 4
Dependent Claim
61 words
The selective calling/receiving device of claim 1 , further comprising: a high-frequency amplifying circuit, and an automatic gain setting circuit for setting a gain of the high frequency amplifying circuit, and wherein the timing signal generation circuit variably controls the pre-heat time according to the detected receiving electric-field level and the amount of gain limited by the automatic gain setting circuit.
Claim 5
Dependent Claim
47 words
The selective calling/receiving device of claim 1 , further comprising: an error rate detection circuit for detecting a bit error rate of received and demodulated data, wherein the amount of gain limited by the automatic gain setting circuit is determined according to the thus-detected bit error rate.
Claim 6
Dependent Claim
25 words
The selective calling/receiving device of claim 1 , wherein the timing signal generation circuit decreases the pre-heat time when the detected receiving electric-field level increases.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-26 | 2004-09-25 | 2005-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-26 | 2008-09-25 | 2009-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-26 | 2012-09-25 | 2013-03-27 | $7700.00 | Window Closed / Lapsed |