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Patent US3283319A successfully refreshed from Google Patents.
US3283319A
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Assignee: NEC Corp
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Filing: 1961-08-11
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Granted: 1966-11-01
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Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Kaneko Hisashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:55
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A CODE CONVERTER FOR CONVERTING AN ANALOGUE SIGNAL SUPPLIED FROM AN INPUT SOURCE INTO A DIGITAL SIGNAL, COMPRISING: (A) AN INPUT TERMINAL CONNECTED TO SAID INPUT SOURCE; (B) A DIGITAL OUTPUT TERMINAL; (C) A SELECTOR CIRCUIT CONNECTED TO SAID INPUT TERMINAL; (D) A CODING NETWORK CONNECTED BETWEEN SAID SELECTOR CIRCUIT AND SAID OUTPUT TERMINAL WHICH INCLUDES; (1) DISCRIMINATOR MEANS FOR PRODUCING A DISCRIMINATOR OUTPUT SIGNAL THAT IS INDICATIVE OF WHETHER THE SIGNAL SUPPLIED FROM SIAD SLECTOR CIRCUIT EXCEEDS A PRESET VALUE, (2) CODING MEANS CONNECTED TO RECEIVE SAID DISCRIMINATOR OUTPUT SIGNAL, AND CONNECTED TO SAID OUTPUT TERMINAL, FOR GENERATING A DIGITIAL SIGNAL INDICATIVE OF WHETHER SAID DISCRIMINATOR OUTPUT SIGNAL EXCEEDS SAID PRESET VALUE, (3) MEANS IN SAID DISCRIMINATOR MEANS FOR SUCCESSIVELY VARYING SAID PRESET VALUE AFTER EACH DIGIT OF SAID DIGITAL SIGNAL IS GENERATED. (4) SWITCHING MEANS CONTROLLED BY SAID CODING MEANS FOR SWITCHING AMONG THE DISCRIMINATOR OUTPUT SIGNAL AND SAID SUPPLIED SELECTOR SIGNAL; (E) A FEEDBACK LOOP, INCLUDING DELAY MEANS, CONNECTED BETWEEN SAID SWITCH MEANS AND SAID SELECTOR CIRCUIT FOR FEEDING BACK TO OUTPUT FROM SAID SWITCHING MEANS TO SAID SELECTOR CIRCUIT, SAID SELECTOR CIRCUIT, SELECTING ONE OF SAID FEEDBACK SIGNAL AND SAID INPUT ANALOGUE SIGNAL TO BE SUPPLIED AS THE INPUT TO SAID CODING NETWORK, WHEREBY SAID CODE CONVERTER WILL GENERATE THE DIGITAL SIGNALS ON A TIME DIVISION BASIS.
Claim 2
Dependent Claim
221 words
A CODE CONVERTER FOR CONVERTING AN ANALOGUE SIGNAL SUPPLIED FROM AN INPUT SOURCE INTO A DIGITAL SIGNAL, COMPRISING: (A) AN INPUT TERMINAL CONNECTED TO SAID INPUT SOURCE; (B) A DIGITAL OUTPUT TERMINAL; (C) A SELECTOR CIRCUIT CONNECTED TO SAID INPUT TERMINAL; (D) A CODING NETWORK CONNECTED BETWEEN SAID SELECTOR CIRCUIT AND SAID OUTPUT TERMINAL WHICH INCLUDES; (1) DISCRIMINATOR MEANS FOR PRODUCING A DISCRIMINATOR OUTPUT SIGNAL THAT IS INDICATIVE OF WHETHER THE SIGNAL SUPPLIED FROM SIAD SLECTOR CIRCUIT EXCEEDS A PRESET VALUE, (2) CODING MEANS CONNECTED TO RECEIVE SAID DISCRIMINATOR OUTPUT SIGNAL, AND CONNECTED TO SAID OUTPUT TERMINAL, FOR GENERATING A DIGITIAL SIGNAL INDICATIVE OF WHETHER SAID DISCRIMINATOR OUTPUT SIGNAL EXCEEDS SAID PRESET VALUE, (3) MEANS IN SAID DISCRIMINATOR MEANS FOR SUCCESSIVELY VARYING SAID PRESET VALUE AFTER EACH DIGIT OF SAID DIGITAL SIGNAL IS GENERATED. (4) SWITCHING MEANS CONTROLLED BY SAID CODING MEANS FOR SWITCHING AMONG THE DISCRIMINATOR OUTPUT SIGNAL AND SAID SUPPLIED SELECTOR SIGNAL; (E) A FEEDBACK LOOP, INCLUDING DELAY MEANS, CONNECTED BETWEEN SAID SWITCH MEANS AND SAID SELECTOR CIRCUIT FOR FEEDING BACK TO OUTPUT FROM SAID SWITCHING MEANS TO SAID SELECTOR CIRCUIT, SAID SELECTOR CIRCUIT, SELECTING ONE OF SAID FEEDBACK SIGNAL AND SAID INPUT ANALOGUE SIGNAL TO BE SUPPLIED AS THE INPUT TO SAID CODING NETWORK, WHEREBY SAID CODE CONVERTER WILL GENERATE THE DIGITAL SIGNALS ON A TIME DIVISION BASIS.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |