Patent US3222454A successfully refreshed from Google Patents.
US3222454A
Expired / Lapsed
US
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Digital comparison circuits
Assignee: Raytheon Co
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Filing: 1962-06-18
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Granted: 1965-12-07
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Expires: 1982-06-18
Abstract
No abstract record available.
Inventors
- 👤 Ferril A Losee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; H04L27/22; H04L27/233; H04L27/2338
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A RECEIVER FOR DEMODULATING A WAVE MODULATED BY DISCRETE SHIFTS IN THE PHASE THEREOF IN A PREDETERMINED MANNER, SAID WAVE HAVING A MODULATION PERIOD, PARTICULAR DIGITAL INFORMATION BEING DENOTED BY PARTICULAR RELATIONSHIPS BETWEEN THE PHASES OF SAID WAVE DURING SUCCESSIVE MODULATION INTERVALS, SAID RECEIVER COMPRISING: WAVERESPONSIVE MEANS FOR DEVELOPING PHASE-INDICATING PULSES WHOSE RELATIVE TIME POSITIONS ARE INDICATIVE OF THE RELATIVE PHASE OF CORRESPONDING CYCLES OF SAID WAVE, SAMPLING MEANS COUPLED TO SAID WAVE-RESPONSIVE MEANS AND SYNCHRONIZED WITH SAID MODULATION PERIOD FOR SELECTING AN INDIVIDUAL ONE OF SAID PHASE-INDICATING PULSES DURING EACH MODULATION INTERVAL OF SAID WAVE, DIGITAL PHASE MEMORY MEANS COUPLED TO SAID SAMPLING MEANS FOR DEVELOPING A PERIOD TRAIN OF GATE PULSES HAVING THE SAME REPETITION FREQUENCY AS THAT OF SAID PHASE-INDICATING PULSES AND WHOSE PHASE IS SUCCESSIVELY SYNCHRONIZED BY EACH SELECTED ONE
Claim 2
Dependent Claim
134 words
A RECEIVER FOR DEMODULATING A WAVE MODULATED BY DISCRETE SHIFTS IN THE PHASE THEREOF IN A PREDETERMINED MANNER, SAID WAVE HAVING A MODULATION PERIOD, PARTICULAR DIGITAL INFORMATION BEING DENOTED BY PARTICULAR RELATIONSHIPS BETWEEN THE PHASES OF SAID WAVE DURING SUCCESSIVE MODULATION INTERVALS, SAID RECEIVER COMPRISING: WAVERESPONSIVE MEANS FOR DEVELOPING PHASE-INDICATING PULSES WHOSE RELATIVE TIME POSITIONS ARE INDICATIVE OF THE RELATIVE PHASE OF CORRESPONDING CYCLES OF SAID WAVE, SAMPLING MEANS COUPLED TO SAID WAVE-RESPONSIVE MEANS AND SYNCHRONIZED WITH SAID MODULATION PERIOD FOR SELECTING AN INDIVIDUAL ONE OF SAID PHASE-INDICATING PULSES DURING EACH MODULATION INTERVAL OF SAID WAVE, DIGITAL PHASE MEMORY MEANS COUPLED TO SAID SAMPLING MEANS FOR DEVELOPING A PERIOD TRAIN OF GATE PULSES HAVING THE SAME REPETITION FREQUENCY AS THAT OF SAID PHASE-INDICATING PULSES AND WHOSE PHASE IS SUCCESSIVELY SYNCHRONIZED BY EACH SELECTED ONE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |