US3131377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small gap data tape communication system
Assignee: Collins Radio Co
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Filing: 1959-09-28
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Granted: 1964-04-28
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Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 George F Grondin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:05
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1201; G11B20/1202; G11B20/1205; H; H04; H04L; H04L1/00; H04L5/00; H04L5/22; H04L5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
367 words
A SYSTEM FOR BIT-SYNCHRONOUSLY COMMUNICATING DIGITAL DATA MAGNETICALLY RECORDED ON TAPE, SAID DATA RECORDED IN BLOCKS OF WORDS SEPARATED BY SPACER GAPS, COMPRISING A NONSYNCHRONOUS DATA TAPE READER, A READER STOP BISTABLE CIRCUIT HAVING AN OUTPUT CONNECTED TO SAID READER, A SYNCHRONOUS TRANSMITTER, A BUFFER STORAGE DEVICE CONNECTED BETWEEN SAID READER AND SAID TRANSMITTER, A SYNCHRONOUS TIMING SOURCE CONNECTED TO SAID TRANSMITTER, A LOAD PULSER CONNECTED TO INPUTS OF SAID BUFFER STORAGE DEVICE, AND AN UNLOAD PULSER CONNECTED TO OUTPUTS OF SAID STORAGE DEVICE, MEANS FOR LOADING SAID STORAGE DEVICE IN SYNCHRONISM WITH AN OUTPUT OF SAID LOAD PULSER, MEANS FOR UNLOADING SAID STORAGE DEVICE IN SYNCHRONISM WITH SAID TIMING SOURCE, A LOAD COUNTER CONNECTED TO SAID LOAD PULSER FOR COUNTING THE WORDS IN EACH BLOCK BEING READ, AN UNLOAD COUNTER CONNECTED TO SAID UNLOAD PULSER FOR COUNTING THE WORDS IN EACH BLOCK BEING SYNCHRONOUSLY UNLOADED, SAID LOAD COUNTER PROVIDING AT LEAST FIRST AND SECOND OUTPUTS AT PREDETERMINED COUNTS AFTER THE BEGINNING AND NEAR ENDING OF EACH BLOCK BEING READ, SAID UNLOAD COUNTER PROVIDING AT LEAST FIRST AND SECOND OUTPUTS NEAR AND AT THE END OF A BLOCK BEING UNLOADED, THE SECOND OUTPUT OF SAID UNLOAD COUNTER BEING CONNECTED TO SAID LOAD COUNTER TO RESET IT, SAID LOAD COUNTER PROVIDING ITS SECOND OUTPUT UNTIL RESET, GATE MEANS HAVING INPUTS CONNECTED TO THE SECOND OUTPUT OF SAID LOAD COUNTER AND THE FIRST OUTPUT OF SAID UNLOAD COUNTER, AN OUTPUT OF SAID GATE MEANS BEING CONNECTED TO SAID READER STOP BISTABLE CIRCUIT TO INTERRUPT THE READING OPERATING OF SAID READER, THE SECOND OUTPUT OF SAID UNLOAD COUNTER BEING CONNECTED TO SAID READER STOP BISTABLE CIRCUIT TO RESTORE A FORWARD OPERATING SIGNAL TO SAID READER, A CONTROL BISTABLE CIRCUIT FOR STARTING AND STOPPING THE UNLOADING OPERATION OF SAID BUFFER STORAGE DEVICE TO SAID TRANSMITTER, THE FIRST OUTPUT OF SAID LOAD COUNTER BEING CONNECTED TO SAID CONTROL BISTABLE CIRCUIT TO TRIGGER IT TO START AN UNLOADING OPERATION, AFTER THE FIRST COUNT THE SECOND OUTPUT OF SAID UNLOAD COUNTER BEING CONNECTED TO SAID CONTROL BISTABLE CIRCUIT TO TRIGGER THE END OF AN UNLOADING OPERATION, A SYNCHRONOUS RECEIVER RECEIVING THE OUTPUT OF SAID TRANSMITTER, AND A DIGITAL TAPE WRITER RECORDING THE RECEIVER OUTPUT.
Claim 2
Independent Claim
367 words
A SYSTEM FOR BIT-SYNCHRONOUSLY COMMUNICATING DIGITAL DATA MAGNETICALLY RECORDED ON TAPE, SAID DATA RECORDED IN BLOCKS OF WORDS SEPARATED BY SPACER GAPS, COMPRISING A NONSYNCHRONOUS DATA TAPE READER, A READER STOP BISTABLE CIRCUIT HAVING AN OUTPUT CONNECTED TO SAID READER, A SYNCHRONOUS TRANSMITTER, A BUFFER STORAGE DEVICE CONNECTED BETWEEN SAID READER AND SAID TRANSMITTER, A SYNCHRONOUS TIMING SOURCE CONNECTED TO SAID TRANSMITTER, A LOAD PULSER CONNECTED TO INPUTS OF SAID BUFFER STORAGE DEVICE, AND AN UNLOAD PULSER CONNECTED TO OUTPUTS OF SAID STORAGE DEVICE, MEANS FOR LOADING SAID STORAGE DEVICE IN SYNCHRONISM WITH AN OUTPUT OF SAID LOAD PULSER, MEANS FOR UNLOADING SAID STORAGE DEVICE IN SYNCHRONISM WITH SAID TIMING SOURCE, A LOAD COUNTER CONNECTED TO SAID LOAD PULSER FOR COUNTING THE WORDS IN EACH BLOCK BEING READ, AN UNLOAD COUNTER CONNECTED TO SAID UNLOAD PULSER FOR COUNTING THE WORDS IN EACH BLOCK BEING SYNCHRONOUSLY UNLOADED, SAID LOAD COUNTER PROVIDING AT LEAST FIRST AND SECOND OUTPUTS AT PREDETERMINED COUNTS AFTER THE BEGINNING AND NEAR ENDING OF EACH BLOCK BEING READ, SAID UNLOAD COUNTER PROVIDING AT LEAST FIRST AND SECOND OUTPUTS NEAR AND AT THE END OF A BLOCK BEING UNLOADED, THE SECOND OUTPUT OF SAID UNLOAD COUNTER BEING CONNECTED TO SAID LOAD COUNTER TO RESET IT, SAID LOAD COUNTER PROVIDING ITS SECOND OUTPUT UNTIL RESET, GATE MEANS HAVING INPUTS CONNECTED TO THE SECOND OUTPUT OF SAID LOAD COUNTER AND THE FIRST OUTPUT OF SAID UNLOAD COUNTER, AN OUTPUT OF SAID GATE MEANS BEING CONNECTED TO SAID READER STOP BISTABLE CIRCUIT TO INTERRUPT THE READING OPERATING OF SAID READER, THE SECOND OUTPUT OF SAID UNLOAD COUNTER BEING CONNECTED TO SAID READER STOP BISTABLE CIRCUIT TO RESTORE A FORWARD OPERATING SIGNAL TO SAID READER, A CONTROL BISTABLE CIRCUIT FOR STARTING AND STOPPING THE UNLOADING OPERATION OF SAID BUFFER STORAGE DEVICE TO SAID TRANSMITTER, THE FIRST OUTPUT OF SAID LOAD COUNTER BEING CONNECTED TO SAID CONTROL BISTABLE CIRCUIT TO TRIGGER IT TO START AN UNLOADING OPERATION, AFTER THE FIRST COUNT THE SECOND OUTPUT OF SAID UNLOAD COUNTER BEING CONNECTED TO SAID CONTROL BISTABLE CIRCUIT TO TRIGGER THE END OF AN UNLOADING OPERATION, A SYNCHRONOUS RECEIVER RECEIVING THE OUTPUT OF SAID TRANSMITTER, AND A DIGITAL TAPE WRITER RECORDING THE RECEIVER OUTPUT.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |