Patent US5239306A successfully refreshed from Google Patents.
US5239306A
Expired / Lapsed
US
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Dual mode receiver having battery saving capability
Assignee: Motorola Solutions Inc
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Filing: 1992-10-05
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Granted: 1993-08-24
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Expires: 2012-10-05
Abstract
Abstract A dual mode communication receiver a receiver for receiving information transmitted in a first and second modulation format on a common channel, a first demodulator for detecting information transmitted in the first modulation format, and a second demodulator, responsive to the information detected in the first modulation format, for detecting information transmitted in the second modulation format. A power conservation circuit is also provided for selectively supplying power to the first and second demodulators for enabling the detecting of the information transmitted in the first modulation format and the second modulation format, respectively.
Inventors
- 👤 Kazimierz Siwiak
- 👤 Clifford D. Leitch
- 👤 Robert J. Schwendeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:29
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/02; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1607; H04B1/1615; H04W52/0209; H04W52/0261; H04W52/0274; H04W68/00; H04W68/02; H04W8/00; H04W8/22; H04W8/24; H04W8/245; H04W88/00; H04W88/02; H04W88/06; H04W88/022; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
61 words
A dual mode communication receiver, comprising: means for receiving information transmitted on a common channel in a first and second modulation format; first means for detecting the information transmitted in the first modulation format on the common channel; and second means, responsive to the information detected in the first modulation format, for detecting the information transmitted in the second modulation format.
Claim 2
Dependent Claim
61 words
A dual mode communication receiver, comprising: means for receiving information transmitted on a common channel in a first and second modulation format; first means for detecting the information transmitted in the first modulation format on the common channel; and second means, responsive to the information detected in the first modulation format, for detecting the information transmitted in the second modulation format.
Claim 3
Dependent Claim
21 words
The dual mode selective call receiver according to claim 1, wherein the first modulation format is frequency shift keyed FM modulation.
Claim 4
Dependent Claim
19 words
The dual mode communication receiver according to claim 1, wherein the second modulation format is a linear modulation format.
Claim 5
Dependent Claim
19 words
The dual mode communication receiver according to claim 3, wherein the linear modulation format is spectrally efficient digital modulation.
Claim 6
Dependent Claim
17 words
The dual mode communication receiver according to claim 3, wherein the linear modulation format is QAM modulation.
Claim 7
Dependent Claim
67 words
The dual mode communication receiver according to claim 2 wherein the information transmitted in the first modulation format includes selective call address information, and wherein said dual mode communication receiver further comprises: means for decoding at least one predetermined address to which the communication receiver is responsive; and means for generating and delivering an alert signal when the address information decoded matches the predetermined address information stored.
Claim 8
Dependent Claim
25 words
The dual mode communication receiver according to claim 1, wherein the information transmitted in the first modulation format is transmitted in a first signaling format.
Claim 9
Dependent Claim
25 words
The dual mode communication receiver according to claim 1, wherein the information transmitted in the second modulation format is transmitted in a second signaling format.
Claim 10
Dependent Claim
25 words
The dual mode communication receiver according to claim 1, wherein the information transmitted in the second modulation format is transmitted on a second receiver frequency.
Claim 11
Dependent Claim
76 words
The dual mode communication receiver according to claim 7 wherein the information transmitted in the first modulation format further includes message information, said first receiver means comprises means for demodulating the received message information, and wherein said dual mode communication receiver further comprises: means for storing the message information received in the first modulation format when the address information detected matches the predetermined address information stored; and means for presenting the stored message information for review.
Claim 12
Dependent Claim
24 words
The dual mode communication receiver according to claim 10, wherein the address information received in the first modulation format identifies a tone only page.
Claim 13
Dependent Claim
24 words
The dual mode communication receiver according to claim 10, wherein the message information received in the first modulation format is a numeric data message.
Claim 14
Dependent Claim
24 words
The dual mode communication receiver according to claim 10, wherein the message information received in the first modulation format is an alphanumeric data message.
Claim 15
Dependent Claim
78 words
The dual mode communication receiver according to claim 10 wherein the information transmitted in the second modulation format includes message information, said second receiver means comprises means for demodulating the received message information, and wherein said dual mode communication receiver further comprises: means for storing the message information detected in the second modulation format when the address information detected in the first modulation format matches the predetermined address information stored; and means for presenting the stored message information.
Claim 16
Dependent Claim
24 words
The dual mode communication receiver according to claim 14 wherein said means for presenting comprises a liquid crystal display for displaying the received information.
Claim 17
Dependent Claim
37 words
The dual mode communication receiver according to claim 14 wherein said means for presenting comprises: processing means for processing the stored message information into an analog voice signal; and delivery means for delivering the analog voice signal.
Claim 18
Dependent Claim
71 words
The dual mode communication receiver according to claim 14 wherein the message information detected in the second modulation format is an analog signal, and wherein said means for storing comprises: converter means for converting the analog message information into digital message information; storage controlling means, responsive to the analog message information being converted into digital message information, for controlling the storage of the digital message information into said message storing means.
Claim 19
Dependent Claim
19 words
The dual mode communication receiver according to claim 17 wherein said converter means is an analog to digital converter.
Claim 20
Dependent Claim
24 words
The dual mode communication receiver according to claim 14 wherein the message information detected in the second modulation format is high speed data information.
Claim 21
Dependent Claim
28 words
The dual mode communication receiver according to claim 19 wherein the high speed data information is transmitted at a data rate in excess of 1200 bits per second.
Claim 22
Dependent Claim
22 words
The dual mode communication receiver according to claim 14 wherein the message information detected in the second modulation format is voice information.
Claim 23
Dependent Claim
25 words
The dual mode communication receiver according to claim 21 wherein the voice information is digitized at a rate of at least 8 kilobits per second.
Claim 24
Dependent Claim
143 words
A dual mode communication receiver comprising: means for receiving information transmitted on a common channel in a first and second modulation format: first means for detecting the information transmitted in the first modulation format on the common channel; second means, responsive to the information detected in the first modulation format, for detecting the information transmitted in the second modulation format; and third means, for supplying power to said receiving means for enabling the receiving of the information transmitted in the first and second modulation format said third means, further for supplying power to said first means for enabling the detecting of the information transmitted in the first modulation format; said third means further in response to the information detected in the first modulation format, supplies power to said second means for enabling the detecting of the information transmitted in the second modulation format.
Claim 25
Dependent Claim
143 words
A dual mode communication receiver comprising: means for receiving information transmitted on a common channel in a first and second modulation format: first means for detecting the information transmitted in the first modulation format on the common channel; second means, responsive to the information detected in the first modulation format, for detecting the information transmitted in the second modulation format; and third means, for supplying power to said receiving means for enabling the receiving of the information transmitted in the first and second modulation format said third means, further for supplying power to said first means for enabling the detecting of the information transmitted in the first modulation format; said third means further in response to the information detected in the first modulation format, supplies power to said second means for enabling the detecting of the information transmitted in the second modulation format.
Claim 26
Dependent Claim
45 words
The dual mode communication receiver according to claim 23 wherein said third means supplies power to said second receiving means in response to predetermined information being received and detected in the first modulation format, and suspends the supply of power to said first receiving means.
Claim 27
Dependent Claim
68 words
The dual mode communication receiver according to claim 23, wherein said first receiving means comprises: a receiver section for receiving information transmitted in the first modulation format; and a first demodulator means for demodulating the information received in the first modulation format, and wherein said third means supplies power to said receiver section and to said first demodulator means for receiving information transmitted in the first modulation format.
Claim 28
Dependent Claim
56 words
The dual mode communication receiver according to claim 23, wherein said second receiving means comprises a second demodulator means for demodulating the information received in the second modulation format, and wherein said third means further supplies power to said receiver section and to said second demodulator means for receiving information transmitted in the second modulation format.
Claim 29
Dependent Claim
55 words
The dual mode communication receiver according to claim 23, wherein said second receiving means comprises a digital storage means for storing the information received in the second modulation format, and wherein said third means further supplies power to said digital storage means for enabling the storing of the information received in the second modulation format.
Claim 30
Dependent Claim
56 words
A dual mode communication receiver, comprising: means for receiving information transmitted in a FM modulation format and a linear modulation format; first means for detecting the information transmitted in the FM modulation format; and second means, responsive to the information detected in the FM modulation format, for detecting the information transmitted in the linear modulation format.
Claim 31
Dependent Claim
56 words
A dual mode communication receiver, comprising: means for receiving information transmitted in a FM modulation format and a linear modulation format; first means for detecting the information transmitted in the FM modulation format; and second means, responsive to the information detected in the FM modulation format, for detecting the information transmitted in the linear modulation format.
Claim 32
Dependent Claim
18 words
The dual mode communication receiver according to claim 28, wherein the FM modulation format utilizes frequency shift keying.
Claim 33
Dependent Claim
19 words
The dual mode communication receiver according to claim 28, wherein the linear modulation format is spectrally efficient digital modulation.
Claim 34
Dependent Claim
17 words
The dual mode communication receiver according to claim 28, wherein the linear modulation format is QAM modulation.
Claim 35
Dependent Claim
25 words
The dual mode communication receiver according to claim 28, wherein the information transmitted in the first modulation format is transmitted in a first signaling format.
Claim 36
Dependent Claim
25 words
The dual mode communication receiver according to claim 28, wherein the information transmitted in the second modulation format is transmitted in a second signaling format.
Claim 37
Dependent Claim
25 words
The dual mode communication receiver according to claim 28, wherein the information transmitted in the second modulation format is transmitted on a second receiver frequency.
Claim 38
Dependent Claim
138 words
A dual mode communication receiver comprising: means for receiving information transmitted in a FM modulation format and a linear modulation format: first means for detecting the information transmitted in the FM modulation format; second means, responsive to the information detected in the FM modulation format, for detecting the information transmitted in the linear modulation format; and third means, for supplying power to said receiving means for enabling the receiving of the information transmitted in the FM and linear modulation formats, said third means, further for supplying power to said first means for enabling the detecting of the information transmitted in the FM modulation format; said third means further in response to the information detected in the FM modulation format, supplies power to said second means for enabling the detecting of the information transmitted in the linear modulation format.
Claim 39
Dependent Claim
138 words
A dual mode communication receiver comprising: means for receiving information transmitted in a FM modulation format and a linear modulation format: first means for detecting the information transmitted in the FM modulation format; second means, responsive to the information detected in the FM modulation format, for detecting the information transmitted in the linear modulation format; and third means, for supplying power to said receiving means for enabling the receiving of the information transmitted in the FM and linear modulation formats, said third means, further for supplying power to said first means for enabling the detecting of the information transmitted in the FM modulation format; said third means further in response to the information detected in the FM modulation format, supplies power to said second means for enabling the detecting of the information transmitted in the linear modulation format.
References Cited (Backward Citations)
US4918437A
Cited
US5054052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-23 | 1997-02-22 | 1997-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-23 | 2001-02-22 | 2001-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-23 | 2005-02-22 | 2005-08-24 | $7700.00 | Window Closed / Lapsed |