US3277462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel-parallel encoding system
Assignee: NEC Corp
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Filing: 1964-01-22
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Granted: 1966-10-04
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Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 Sekimoto Tadahiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:53
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PARALLEL-PARALLEL ENCODING SYSTEM FOR CONVERTING ANALOGUE INPUT SIGNALS INTO CODED DIGITAL OUTPUT SIGNALS COMPRISING: (A) AN INPUT SIGNAL SOURCE; (B) MEANS FOR GENERATING A GROUP OF RELATIVELY COARSE REFERENCE SIGNALS AND AT LEAST ONE GROUP OF RELATIVELY FINE REFERENCE SIGNALS; (C) A FIRST GROUP OF PARALLEL CONNECTED DIFFERENCE SENSING CIRCUITS CONNECTED TO SAID INPUT SOURCE, EACH DIFFERENCE SENSING CIRCUIT BEING SUPPLIED WITH A DIFFERENT ONE OF SAID GROUP OF RELATIVELY COARSE REFERENCE SIGNALS AND PRODUCING A COARSE DIFFERENCE SIGNAL INDICATIVE OF THE DIFFERENCE BETWEEN THE INTPUT SIGNAL AND THE COARESE REFERENCE SIGNAL SUPPLIED THERETO; (D) FIRST SELECTION MEANS CONNECTED TO THE OUTPUT OF SAID DIFFERENCE SENSING CIRCUITS FOR SELECTING ONE OF SAID COARSE DIFFERENCE SIGNALS FOR FURTHER TRANSMISSION;
Claim 2
Dependent Claim
119 words
A PARALLEL-PARALLEL ENCODING SYSTEM FOR CONVERTING ANALOGUE INPUT SIGNALS INTO CODED DIGITAL OUTPUT SIGNALS COMPRISING: (A) AN INPUT SIGNAL SOURCE; (B) MEANS FOR GENERATING A GROUP OF RELATIVELY COARSE REFERENCE SIGNALS AND AT LEAST ONE GROUP OF RELATIVELY FINE REFERENCE SIGNALS; (C) A FIRST GROUP OF PARALLEL CONNECTED DIFFERENCE SENSING CIRCUITS CONNECTED TO SAID INPUT SOURCE, EACH DIFFERENCE SENSING CIRCUIT BEING SUPPLIED WITH A DIFFERENT ONE OF SAID GROUP OF RELATIVELY COARSE REFERENCE SIGNALS AND PRODUCING A COARSE DIFFERENCE SIGNAL INDICATIVE OF THE DIFFERENCE BETWEEN THE INTPUT SIGNAL AND THE COARESE REFERENCE SIGNAL SUPPLIED THERETO; (D) FIRST SELECTION MEANS CONNECTED TO THE OUTPUT OF SAID DIFFERENCE SENSING CIRCUITS FOR SELECTING ONE OF SAID COARSE DIFFERENCE SIGNALS FOR FURTHER TRANSMISSION;
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |