Patent US3275995A successfully refreshed from Google Patents.
US3275995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data handling system
Assignee: International Business Machines Corp
•
Filing: 1963-12-23
•
Granted: 1966-09-27
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Jacob J Hagopian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/10; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/023; G06F3/0232; G11B15/12; G11B15/18; G11B15/20; G11B15/26; G11B15/34; G11B27/00; G11B27/36; G11B5/00; G11B5/127; G11B5/17; G11B5/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
239 words
A DATA TRANSMISSION BUFFER FOR ASYNCHRONOUSLY RECORDING AND REPRODUCING DATA COMPRISING: MEANS FOR RECEIVING A MULTI-BIT CODED SIGNAL REPRESENTATIVE OF THE CHARACTER, A MAGNETIC TAPE HAVING A SINGLE RECORDING CHANNEL, A MAGNETIC TRANSDUCER CONNECTED TO RECEIVE THE MULTI-BIT CODED SIGNAL FROM THE RECEIVING MEANS AND POSITIONED IN RECORDING RELATIONSHIP WITH THE SINGLE CHANNEL ON THE MAGNETIC TAPE, SAID MAGNETIC TRANSDUCER INCLUDING WRITING MEANS DEFINING A PLURALITY OF RECORDING GAPS FOR SIMULATANEOUSLY RECORDING THE BITS OF THE CODED SIGNAL RECEIVED IN PARALLEL LENGTHWISE ON THE SINGLE CHANNEL WHEN THE TAPE IS STATIONARY WITH RESPECT TO THE MAGNETIC TRANSDUCER AND INCLUDING READING MEANS INCLUDING A SINGLE READING GAP DISPOSED IN READING RELATIONSHIP TO THE TAPE CLOSELY ADJACENT ONE OF SAID RECORDING GAPS, MEANS FOR MOVING THE TAPE AT SELECTED SPEEDS RELATIVE TO THE MAGNETIC TRANSDUCER, MEANS FOR RESTRICTING THE MOVEMENT OF THE TAPE DURING THE RECORDING OF THE MULTI-BIT CODED SIGNAL, SAID RESTRICTING MEANS PERMITTING THE TAPE TO MOVE A SIGNAL INCREMENT AT ONE OF SAID SELECTED SPEEDS AFTER EACH RECORDING OF A MULTI-BIT CODED SIGNAL, THE LENGTH OF EACH INCREMENT CORRESPONDING TO THE DISTANCE BETWEEN THE READING GAP AND THE FURTHEST RECORDING GAP ON THE MAGNETIC TRANSDUCER SUCH THAT THE SIGNALS RECORDED PASS THE READING GAP TO BE REPRODUCED DURING THE INCREMENTAL MOVEMENT, WHEREBY THE PARALLEL BITS REPRESENTING A CHARACTER ARE RECORDED IN SERIAL FASHION ON THE TAPE TO BE LATER REPRODUCED SERIALLY AT DIFFERENT ONES OF THE SELECTED SPEEDS.
Claim 2
Dependent Claim
239 words
A DATA TRANSMISSION BUFFER FOR ASYNCHRONOUSLY RECORDING AND REPRODUCING DATA COMPRISING: MEANS FOR RECEIVING A MULTI-BIT CODED SIGNAL REPRESENTATIVE OF THE CHARACTER, A MAGNETIC TAPE HAVING A SINGLE RECORDING CHANNEL, A MAGNETIC TRANSDUCER CONNECTED TO RECEIVE THE MULTI-BIT CODED SIGNAL FROM THE RECEIVING MEANS AND POSITIONED IN RECORDING RELATIONSHIP WITH THE SINGLE CHANNEL ON THE MAGNETIC TAPE, SAID MAGNETIC TRANSDUCER INCLUDING WRITING MEANS DEFINING A PLURALITY OF RECORDING GAPS FOR SIMULATANEOUSLY RECORDING THE BITS OF THE CODED SIGNAL RECEIVED IN PARALLEL LENGTHWISE ON THE SINGLE CHANNEL WHEN THE TAPE IS STATIONARY WITH RESPECT TO THE MAGNETIC TRANSDUCER AND INCLUDING READING MEANS INCLUDING A SINGLE READING GAP DISPOSED IN READING RELATIONSHIP TO THE TAPE CLOSELY ADJACENT ONE OF SAID RECORDING GAPS, MEANS FOR MOVING THE TAPE AT SELECTED SPEEDS RELATIVE TO THE MAGNETIC TRANSDUCER, MEANS FOR RESTRICTING THE MOVEMENT OF THE TAPE DURING THE RECORDING OF THE MULTI-BIT CODED SIGNAL, SAID RESTRICTING MEANS PERMITTING THE TAPE TO MOVE A SIGNAL INCREMENT AT ONE OF SAID SELECTED SPEEDS AFTER EACH RECORDING OF A MULTI-BIT CODED SIGNAL, THE LENGTH OF EACH INCREMENT CORRESPONDING TO THE DISTANCE BETWEEN THE READING GAP AND THE FURTHEST RECORDING GAP ON THE MAGNETIC TRANSDUCER SUCH THAT THE SIGNALS RECORDED PASS THE READING GAP TO BE REPRODUCED DURING THE INCREMENTAL MOVEMENT, WHEREBY THE PARALLEL BITS REPRESENTING A CHARACTER ARE RECORDED IN SERIAL FASHION ON THE TAPE TO BE LATER REPRODUCED SERIALLY AT DIFFERENT ONES OF THE SELECTED SPEEDS.
References Cited (Backward Citations)
US3012230A
Cited
US3176278A
Cited
US3092810A
Cited
US3157867A
Cited
US3130933A
Cited
US3159822A
Cited
US3109603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |