Patent US1558234A successfully refreshed from Google Patents.
US3274378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transfer and conversion circuit
Assignee: International Business Machines Corp
•
Filing: 1961-12-28
•
Granted: 1966-09-20
•
Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 John K Crawford
- 👤 Chester M Pietras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
H; H03; H03M; H03M7/00; G; G03; G03G; G03G15/00; G03G15/04; G03G15/04027; G06; G06F; G06F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A DATA TRANSFER AND CONVERSION CIRCUIT FOR CONVERTING A FIRST GROUP OF BYTES, EACH HAVING A PARTICULAR NUMBER OF BINARY BITS TO A SECOND GROUP OF BYTES, SAID GROUPS HAVING THE SAME NUMBER OF BITS, BUT THEIR RESPECTIVE BYTES HAVING DIFFERENT NUMBERS OF BINARY BITS WITH A NON-INTEGER MULTIPLE RELATIONSHIP, COMPRISING: A CONVERSION REGISTER HAVING A PLURALITY OF BIT STORAGE POSITIONS, SAID REGISTER HAVING A MAXIMUM BIT STORAGE CAPACITY WHICH IS LESS IN NUMBER THAN THE NUMBER OF BITS IN EACH OF SAID FIRST OR SECOND GROUP, SAID POSITIONS BEING INACTIVE WHEN AVAILABLE FOR STORAGE BINARY BITS OR ACTIVE WHEN UNAVAILABLE FOR STORAGE OF BINARYS BITS; MEANS FOR GATING EACH BYTE OF SAID FIRST GROUP IN SUCCESSION TO SELECTED INACTIVE REGISTER POSITIONS THEREBY RENDERING THEM ACTIVE; AND MEANS FOR SELECTIVELY GATING OUTPUT BYTES IN SUCCESSION FROM ACTIVE REGISTER POSITIONS.
Claim 2
Dependent Claim
139 words
A DATA TRANSFER AND CONVERSION CIRCUIT FOR CONVERTING A FIRST GROUP OF BYTES, EACH HAVING A PARTICULAR NUMBER OF BINARY BITS TO A SECOND GROUP OF BYTES, SAID GROUPS HAVING THE SAME NUMBER OF BITS, BUT THEIR RESPECTIVE BYTES HAVING DIFFERENT NUMBERS OF BINARY BITS WITH A NON-INTEGER MULTIPLE RELATIONSHIP, COMPRISING: A CONVERSION REGISTER HAVING A PLURALITY OF BIT STORAGE POSITIONS, SAID REGISTER HAVING A MAXIMUM BIT STORAGE CAPACITY WHICH IS LESS IN NUMBER THAN THE NUMBER OF BITS IN EACH OF SAID FIRST OR SECOND GROUP, SAID POSITIONS BEING INACTIVE WHEN AVAILABLE FOR STORAGE BINARY BITS OR ACTIVE WHEN UNAVAILABLE FOR STORAGE OF BINARYS BITS; MEANS FOR GATING EACH BYTE OF SAID FIRST GROUP IN SUCCESSION TO SELECTED INACTIVE REGISTER POSITIONS THEREBY RENDERING THEM ACTIVE; AND MEANS FOR SELECTIVELY GATING OUTPUT BYTES IN SUCCESSION FROM ACTIVE REGISTER POSITIONS.
References Cited (Backward Citations)
US3079597A
Cited
US3008127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |