Patent US2536967A successfully refreshed from Google Patents.
Patent US4506385A successfully refreshed from Google Patents.
US4506385A
Expired / Lapsed
US
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Radio reception path monitor for a diversity system
Assignee: Boeing North American Inc
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Filing: 1982-12-27
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Granted: 1985-03-19
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Expires: 2002-12-27
Abstract
Abstract Disclosed is an antenna monitor for a diversity communication system having the capability of detecting differences in reception characteristics between a plurality of reception paths or modes and storing that failure information in a non-volatile memory store. Subsequently, the memory is read to determine if the antenna systems are functioning improperly.
Inventors
- 👤 Chris D. Fedde
- 👤 Dennis L. Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:03
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H04L1/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
A radio reception path monitor apparatus comprising: a. at least two antennas; b. at least two receivers, each coupled to a different one of said antennas; c. at least two decoders, each coupled to a different one of said receivers; d. at least two latches, each coupled to a different one of said decoders wherein a properly decoded signal in one of said decoders triggers the respective latch; and e. means for transferring the state of said latches into a non-volatile memory and for resetting said latches.
Claim 2
Dependent Claim
87 words
A radio reception path monitor apparatus comprising: a. at least two antennas; b. at least two receivers, each coupled to a different one of said antennas; c. at least two decoders, each coupled to a different one of said receivers; d. at least two latches, each coupled to a different one of said decoders wherein a properly decoded signal in one of said decoders triggers the respective latch; and e. means for transferring the state of said latches into a non-volatile memory and for resetting said latches.
Claim 3
Dependent Claim
70 words
A radio reception path monitor apparatus as in claim 1 wherein said transferring means is operable to read out said latch states from said non-volatile memory and further comprising a maintenance monitor coupled to said transferring means for indicating periods of failed signal decode functioning upon readout of latch states stored in said memory corresponding to a failure in one of said at least two antenna, receiver, and decoder combinations.
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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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |