Patent US4444596A successfully refreshed from Google Patents.
US3105231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data signal processing apparatus
Assignee: Epsco Inc
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Filing: 1958-11-03
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Granted: 1963-09-24
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Expires: 1978-11-03
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Gordon
- 👤 Robert P Talambiras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:37
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/34; H03M1/36; H03M1/361; H03M1/366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
ANALOG TO DIGITAL CONVERSION APPARATUS COMPRISING, A PLURALITY OF INPUT CHANNELS EACH ADAPTED TO RECEIVE A SEPARATE INPUT ANALOG SIGNAL, MEANS FOR PROVIDING AN ELECTRICAL INDICATION OF A DIGITAL NUMBER WHOSE VALUE NORMALLY CHANGES PERIODICALLY BY INCREMENTS CORRESPONDING TO THE SMALLEST CHANGE IN ITS LEAST SIGNIFICANT DIGIT, MEANS RESPONSIVE TO SAID ELECTRICAL INDICATIONS FOR PROVIDING A DECODED ANALOG SIGNAL CHARACTERISTIC OF THE VALUE OF SAID DIGITAL NUMBER, MEANS FOR SIMULTANEOUSLY COMPARING SAID DECODED ANALOG SIGNAL WITH SAID INPUT ANALOG SIGNALS TO PROVIDE A COMPARE SIGNAL IDENTIFYING THOSE CHANNELS HAVING AN INPUT ANALOG SIGNAL THEN DIFFERING FROM SAID DECODED ANALOG SIGNAL BY LESS THAN A PREDETERMINED MAGNITUDE, SAID PREDETERMINED MAGNITUDE BEING LESS THAN OR EQUAL TO THE CHANGE IN SAID DECODED ANALOG SIGNAL CORRESPONDING TO A SINGLE ONE OF SAID INCREMENTS, STORAGE MEANS HAVING PORTIONS THEREIN CORRESPONDING RESPECTIVELY TO EACH OF SAID INPUT CHANNELS, MEANS RESPONSIVE TO SAID COMPARE SIGNAL FOR TEMPORARILY PREVENTING CHANGES IN THE VALUE OF SAID DIGITAL NUMBER, MEANS RESPONSIVE TO SAID COMPARE SIGNAL AND SAID ELECTRICAL INDICATION FOR STORING THE VALUE OF SAID DIGITAL NUMBER THEN INDICATED IN SAID PORTIONS ASSOCIATED WITH RESPECTIVE INPUT CHANNELS THEN IDENTIFIED BY SAID COMPARE SIGNAL, MEANS FOR CAUSING THE VALUE OF
Claim 2
Dependent Claim
200 words
ANALOG TO DIGITAL CONVERSION APPARATUS COMPRISING, A PLURALITY OF INPUT CHANNELS EACH ADAPTED TO RECEIVE A SEPARATE INPUT ANALOG SIGNAL, MEANS FOR PROVIDING AN ELECTRICAL INDICATION OF A DIGITAL NUMBER WHOSE VALUE NORMALLY CHANGES PERIODICALLY BY INCREMENTS CORRESPONDING TO THE SMALLEST CHANGE IN ITS LEAST SIGNIFICANT DIGIT, MEANS RESPONSIVE TO SAID ELECTRICAL INDICATIONS FOR PROVIDING A DECODED ANALOG SIGNAL CHARACTERISTIC OF THE VALUE OF SAID DIGITAL NUMBER, MEANS FOR SIMULTANEOUSLY COMPARING SAID DECODED ANALOG SIGNAL WITH SAID INPUT ANALOG SIGNALS TO PROVIDE A COMPARE SIGNAL IDENTIFYING THOSE CHANNELS HAVING AN INPUT ANALOG SIGNAL THEN DIFFERING FROM SAID DECODED ANALOG SIGNAL BY LESS THAN A PREDETERMINED MAGNITUDE, SAID PREDETERMINED MAGNITUDE BEING LESS THAN OR EQUAL TO THE CHANGE IN SAID DECODED ANALOG SIGNAL CORRESPONDING TO A SINGLE ONE OF SAID INCREMENTS, STORAGE MEANS HAVING PORTIONS THEREIN CORRESPONDING RESPECTIVELY TO EACH OF SAID INPUT CHANNELS, MEANS RESPONSIVE TO SAID COMPARE SIGNAL FOR TEMPORARILY PREVENTING CHANGES IN THE VALUE OF SAID DIGITAL NUMBER, MEANS RESPONSIVE TO SAID COMPARE SIGNAL AND SAID ELECTRICAL INDICATION FOR STORING THE VALUE OF SAID DIGITAL NUMBER THEN INDICATED IN SAID PORTIONS ASSOCIATED WITH RESPECTIVE INPUT CHANNELS THEN IDENTIFIED BY SAID COMPARE SIGNAL, MEANS FOR CAUSING THE VALUE OF
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |