Patent US3350658A successfully refreshed from Google Patents.
US3350658A
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Oscillator drift compensation
Assignee: ASTRODATA Inc
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Filing: 1966-05-19
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Granted: 1967-10-31
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Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Winston G Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:56
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/081; H03L7/0812; H03L7/0814; H03B; H03B2200/00; H03B2200/006; H03B2200/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN APPARATUS OF THE CHARACTER DESCRIBED, A GENERATOR TO PRODUCE A SIGNAL FREQUENCY F1 SUBJECT TO DRIFT, PHASE SPLITTING MEANS RESPONSIVE TO THE RECEIVED SIGNAL FREQUENCY F1 TO PRODUCE MULTIPLE OUTPUTS OF FREQUENCY F1 RESPECTIVELY PHASE DISPLACED SO AS TO CANCEL IF ADDED, MEANS CONNECTED TO BE RESPONSIVE TO AN ERROR SIGNAL FOR SELECTIVELY PASSING AND VARIABLY AMPLITUDE MODULATING DIFFERENT OF SAID MULTIPLE OUTPUT SIGNALS AND THEREAFTER COMBINING THE AMPLITUDE MODULATED SIGNALS TO PRODUCE A VERSION F0 OF F1, AND MEANS TO COMPARE F0 WITH THE OUTPUT OF A FREQUENCY STANDARD TO DERIVE SAID ERROR SIGNAL.
Claim 2
Dependent Claim
96 words
IN APPARATUS OF THE CHARACTER DESCRIBED, A GENERATOR TO PRODUCE A SIGNAL FREQUENCY F1 SUBJECT TO DRIFT, PHASE SPLITTING MEANS RESPONSIVE TO THE RECEIVED SIGNAL FREQUENCY F1 TO PRODUCE MULTIPLE OUTPUTS OF FREQUENCY F1 RESPECTIVELY PHASE DISPLACED SO AS TO CANCEL IF ADDED, MEANS CONNECTED TO BE RESPONSIVE TO AN ERROR SIGNAL FOR SELECTIVELY PASSING AND VARIABLY AMPLITUDE MODULATING DIFFERENT OF SAID MULTIPLE OUTPUT SIGNALS AND THEREAFTER COMBINING THE AMPLITUDE MODULATED SIGNALS TO PRODUCE A VERSION F0 OF F1, AND MEANS TO COMPARE F0 WITH THE OUTPUT OF A FREQUENCY STANDARD TO DERIVE SAID ERROR SIGNAL.
References Cited (Backward Citations)
US2972720A
Cited
US3076943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |