US3307173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transient reduction in digital-to analog converters
Assignee: Individual
•
Filing: 1964-04-16
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Granted: 1967-02-28
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Popodi
- 👤 Charles R Pearman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:22
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/06; H03M1/08; H03M1/0863; H03M1/66; H03M1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN COMBINATION IN A DIGITAL-TO-ANALOG CONVERTER; A REGISTER HAVING A SERIES OF OUTPUT TERMINALS FOR GENERATING BINARY DIGIT VOLTAGES OF PROGRESSIVE SIGNIFICANCE, A FIRST AND A SECOND LADDER NETWORK, EACH NETWORK INCLUDING A PLURALITY OF SERIALLY CONNECTED ATTENUATION SECTIONS CORRESPONDING IN NUMBER TO THE NUMBER OF SAID BINARY DIGITS, SAID NETWORKS HAVING A COMMON OUTPUT TERMINAL, A SOURCE OF REFERENCE POTENTIAL, A PLURALITY OF SWITCH ELEMENTS, SAID ELEMENTS BEING CONNECTED, RESPECTIVELY, BETWEEN SAID REFERENCE SOURCE AND THE SECTIONS OF SAID FIRST LADDER NETWORK AND BEING RESPONSIVE, RESPECTIVELY, TO DIFFERENT DIGIT VOLTAGES TO SELECTIVELY ADD THE ATTENUATION OF DIFFERENT SECTIONS TO PRODUCE A VOLTAGE AT SAID OUTPUT TERMINAL WHICH IS THE ANALOG OF THE DIGITAL NUMBER OF SAID REGISTER,
Claim 2
Dependent Claim
118 words
IN COMBINATION IN A DIGITAL-TO-ANALOG CONVERTER; A REGISTER HAVING A SERIES OF OUTPUT TERMINALS FOR GENERATING BINARY DIGIT VOLTAGES OF PROGRESSIVE SIGNIFICANCE, A FIRST AND A SECOND LADDER NETWORK, EACH NETWORK INCLUDING A PLURALITY OF SERIALLY CONNECTED ATTENUATION SECTIONS CORRESPONDING IN NUMBER TO THE NUMBER OF SAID BINARY DIGITS, SAID NETWORKS HAVING A COMMON OUTPUT TERMINAL, A SOURCE OF REFERENCE POTENTIAL, A PLURALITY OF SWITCH ELEMENTS, SAID ELEMENTS BEING CONNECTED, RESPECTIVELY, BETWEEN SAID REFERENCE SOURCE AND THE SECTIONS OF SAID FIRST LADDER NETWORK AND BEING RESPONSIVE, RESPECTIVELY, TO DIFFERENT DIGIT VOLTAGES TO SELECTIVELY ADD THE ATTENUATION OF DIFFERENT SECTIONS TO PRODUCE A VOLTAGE AT SAID OUTPUT TERMINAL WHICH IS THE ANALOG OF THE DIGITAL NUMBER OF SAID REGISTER,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |