US3254337A
Expired / Lapsed
US
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Assignee: General Precision Inc
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Filing: 1963-02-21
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Granted: 1966-05-31
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Expires: 1983-02-21
Abstract
No abstract record available.
Inventors
- 👤 John M Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:31
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A DIGITAL TO ANALOG CONVERSION APPARATUS, COMPRISING: MEANS FOR STORING A PLURALITY OF MULTI-BIT DIGITAL DATA WORDS, SAID WORDS INCLUDING A NUMBER OF BINARY BITS ARRANGED IN A PREDETERMINED ORDER OF RELATIVE SIGNIFICANCE; MEANS OPERABLE TO COMPLEMENT ONLY THE BIT OF MOST SIGNIFICANCE OF EACH MULTI-BIT DIGITAL DATA WORD PRIOR TO STORING WHEN SAID MOST SIGNIFICANT BIT IS OF A FIRST BINARY VALUE AND OPERABLE TO COMPLEMENT ALL OF SAID BITS OF EACH MULTI-BIT DIGITAL WORD PRIOR TO STORING WHEN SAID MOST SIGNIFICANT BIT IS OF A SECOND BINARY VALUE; A PLURALITY OF OUTPUT TERMINALS,ONE FOR EACH OF SAID WORDS; FIRST AND SECOND VOLTAGE SOURCES; SENSING MEANS FOR DETERMINING THE BINARY VALUE OF EACH OF SAID BITS IN SAID STORING MEANS; TIMED SWITCHING MEANS FOR COUPLING SAID SENSING MEANS TO SAID STORING MEANS FOR A TIME PROPORTIONAL TO THE RELATIVE SIGNIFICANCE OF EACH OF SAID BITS IN SAID WORD; AND SWITCHING MEANS COUPLED TO SAID SENSING MEANS FOR CONNECTING ONE OF SAID FIRST AND SECOND VOLTAGES TO EACH OF SAID PLURALITY OF OUTPUT TERMINALS IN ACCORDANCE WITH THE VALUE OF THE SENSED BIT FOR A TIMED INTERVAL PROPORTIONAL TO THE RELATIVE SIGNIFICANCE OF SAID BITS.
Claim 2
Dependent Claim
195 words
A DIGITAL TO ANALOG CONVERSION APPARATUS, COMPRISING: MEANS FOR STORING A PLURALITY OF MULTI-BIT DIGITAL DATA WORDS, SAID WORDS INCLUDING A NUMBER OF BINARY BITS ARRANGED IN A PREDETERMINED ORDER OF RELATIVE SIGNIFICANCE; MEANS OPERABLE TO COMPLEMENT ONLY THE BIT OF MOST SIGNIFICANCE OF EACH MULTI-BIT DIGITAL DATA WORD PRIOR TO STORING WHEN SAID MOST SIGNIFICANT BIT IS OF A FIRST BINARY VALUE AND OPERABLE TO COMPLEMENT ALL OF SAID BITS OF EACH MULTI-BIT DIGITAL WORD PRIOR TO STORING WHEN SAID MOST SIGNIFICANT BIT IS OF A SECOND BINARY VALUE; A PLURALITY OF OUTPUT TERMINALS,ONE FOR EACH OF SAID WORDS; FIRST AND SECOND VOLTAGE SOURCES; SENSING MEANS FOR DETERMINING THE BINARY VALUE OF EACH OF SAID BITS IN SAID STORING MEANS; TIMED SWITCHING MEANS FOR COUPLING SAID SENSING MEANS TO SAID STORING MEANS FOR A TIME PROPORTIONAL TO THE RELATIVE SIGNIFICANCE OF EACH OF SAID BITS IN SAID WORD; AND SWITCHING MEANS COUPLED TO SAID SENSING MEANS FOR CONNECTING ONE OF SAID FIRST AND SECOND VOLTAGES TO EACH OF SAID PLURALITY OF OUTPUT TERMINALS IN ACCORDANCE WITH THE VALUE OF THE SENSED BIT FOR A TIMED INTERVAL PROPORTIONAL TO THE RELATIVE SIGNIFICANCE OF SAID BITS.
References Cited (Backward Citations)
US3012240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |