US3274503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital differentiator for amplitude modulated carrier
Assignee: Individual
•
Filing: 1962-11-30
•
Granted: 1966-09-20
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Peterson
- 👤 William J Finney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:45
CPC Classifications
H; H03; H03D; H03D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A DETECTOR FOR MODULATED CARRIER WAVES COMPRISING: SAMPLING MEANS FOR SAMPLING THE AMPLITUDE OF THE CARRIER AT A RATE GREATER THAN THE FREQUENCY OF SAID CARRIER, ANALOG-TO-DIGITAL CONVERTER MEANS COUPLED TO SAID SAMPLING MEANS FOR CONVERTING SAMPLES FROM SAID SAMPLING MEANS TO DIGITAL FORM, FIRST STORAGE MEANS OPERATIVELY COUPLED TO SAID ANALOGTO-DIGITAL CONVERTER FOR STORING AT LEAST ONE OF SAID SAMPLES AND A SUBSEQUENT SAMPLE, SUBTRACTOR MEANS COUPLED TO THE OUTPUT OF SAID STORAGE MEANS FOR EXTRACTING A DIFFERENCE SAMPLE EQUAL TO THE DIFFERENCE BETWEEN TWO SUCCESSIVE SAMPLES, SECOND STORAGE MEANS FOR STORING AT LEAST ONE OF SAID SAMPLES, GATING MEANS FOR COUPLING SAID FIRST STORAGE MEANS TO SAID SECOND STORAGE MEANS, AND CIRCUIT MEANS OPERATIVELY COUPLED BETWEEN SAID SUBTRACTOR MEANS AND SAID GATING MEANS FOR OPENING SAID GATING MEANS WHEN THE SIGN OF SAID DIFFERENCE SAMPLE CHANGES TO TRANSFER THE SAMPLE FROM SAID FIRST STORAGE MEANS TO SAID SECOND STORAGE MEANS.
Claim 2
Dependent Claim
152 words
A DETECTOR FOR MODULATED CARRIER WAVES COMPRISING: SAMPLING MEANS FOR SAMPLING THE AMPLITUDE OF THE CARRIER AT A RATE GREATER THAN THE FREQUENCY OF SAID CARRIER, ANALOG-TO-DIGITAL CONVERTER MEANS COUPLED TO SAID SAMPLING MEANS FOR CONVERTING SAMPLES FROM SAID SAMPLING MEANS TO DIGITAL FORM, FIRST STORAGE MEANS OPERATIVELY COUPLED TO SAID ANALOGTO-DIGITAL CONVERTER FOR STORING AT LEAST ONE OF SAID SAMPLES AND A SUBSEQUENT SAMPLE, SUBTRACTOR MEANS COUPLED TO THE OUTPUT OF SAID STORAGE MEANS FOR EXTRACTING A DIFFERENCE SAMPLE EQUAL TO THE DIFFERENCE BETWEEN TWO SUCCESSIVE SAMPLES, SECOND STORAGE MEANS FOR STORING AT LEAST ONE OF SAID SAMPLES, GATING MEANS FOR COUPLING SAID FIRST STORAGE MEANS TO SAID SECOND STORAGE MEANS, AND CIRCUIT MEANS OPERATIVELY COUPLED BETWEEN SAID SUBTRACTOR MEANS AND SAID GATING MEANS FOR OPENING SAID GATING MEANS WHEN THE SIGN OF SAID DIFFERENCE SAMPLE CHANGES TO TRANSFER THE SAMPLE FROM SAID FIRST STORAGE MEANS TO SAID SECOND STORAGE MEANS.
References Cited (Backward Citations)
US3146424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |