Patent FR731462A successfully refreshed from Google Patents.
Patent US3928851A successfully refreshed from Google Patents.
US3928851A
Expired / Lapsed
US
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Object locator system
Assignee: United States Department of the Navy
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Filing: 1960-08-31
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Granted: 1975-12-23
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Expires: 1980-08-31
Abstract
Abstract 3. An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a narrow bandwidth analysis channel, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals whereby they are held within the bandwidth of the analysis channel.
Inventors
- 👤 Garold K Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:35
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/64
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
In a signal storage and playback object locator system employing narrow bandwidth return signal analysis principles, apparatus for compensating for frequency shift of return signal beyond the analysis bandwidth as a result of relative motion between the system and return signal producing objects comprising, a plurality of analysis channels having narrow bandwidths selectively responsive to different frequencies, and means for varying the playback frequency in a selected pattern corresponding to variations in the rate of said relative motion.
Claim 2
Dependent Claim
78 words
In a signal storage and playback object locator system employing narrow bandwidth return signal analysis principles, apparatus for compensating for frequency shift of return signal beyond the analysis bandwidth as a result of relative motion between the system and return signal producing objects comprising, a plurality of analysis channels having narrow bandwidths selectively responsive to different frequencies, and means for varying the playback frequency in a selected pattern corresponding to variations in the rate of said relative motion.
Claim 3
Dependent Claim
101 words
In a signal storage and playback object locator system employing narrow bandwidth return signal analysis principles, apparatus for compensating for frequency shift of return signal beyond the analysis bandwidth as a result of relative motion between the system and return signal producing objects comprising, a plurality of analysis channels having narrow baNdwidths selectively responsive to different frequencies, means for varying the playback frequency in a selected pattern corresponding to variations in the rate of said relative motion, and means for varying said pattern to obtain compensation for a plurality of different patterns of variations in the rate of said relative motion.
Claim 4
Dependent Claim
101 words
In a signal storage and playback object locator system employing narrow bandwidth return signal analysis principles, apparatus for compensating for frequency shift of return signal beyond the analysis bandwidth as a result of relative motion between the system and return signal producing objects comprising, a plurality of analysis channels having narrow baNdwidths selectively responsive to different frequencies, means for varying the playback frequency in a selected pattern corresponding to variations in the rate of said relative motion, and means for varying said pattern to obtain compensation for a plurality of different patterns of variations in the rate of said relative motion.
Claim 5
Dependent Claim
71 words
An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a narrow bandwidth analysis channel, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals whereby they are held within the bandwidth of the analysis channel.
Claim 6
Dependent Claim
71 words
An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a narrow bandwidth analysis channel, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals whereby they are held within the bandwidth of the analysis channel.
Claim 7
Dependent Claim
81 words
An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a plurality of narrow bandwidth analysis channels, each selectively responsive to a different frequency band, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals whereby they are held within the bandwidth of one analysis channel.
Claim 8
Dependent Claim
81 words
An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a plurality of narrow bandwidth analysis channels, each selectively responsive to a different frequency band, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals whereby they are held within the bandwidth of one analysis channel.
Claim 9
Dependent Claim
107 words
An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a plurality of narrow bandwidth analysis channels, each selectively reponsive to a different frequency band, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals in a selected pattern corresponding to variations in the rate of relative motion between the system and a distant signal return object whereby the frequency varied playback signals are held within the bandwidth of one analysis channel.
Claim 10
Dependent Claim
107 words
An object locator system comprising, means emitting signals, means for receiving signals returned by distant objects, means for storing received signals, a plurality of narrow bandwidth analysis channels, each selectively reponsive to a different frequency band, means for controlling the playback of stored signals whereby signals stored intermittently for a selected range are played back continuously without substantial intervening time interruptions, and means for varying the frequency of playback signals in a selected pattern corresponding to variations in the rate of relative motion between the system and a distant signal return object whereby the frequency varied playback signals are held within the bandwidth of one analysis channel.
References Cited (Backward Citations)
US3133281A
Cited
US3885240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |