US3197739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording system
Assignee: International Business Machines Corp
•
Filing: 1958-06-30
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Granted: 1965-07-27
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:07
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1201; G11B20/1202; G11B20/1205; G11B20/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A CIRCUIT FOR ASSEMBLING THE INDIVIDUAL SIGNAL OF A GROUP WHICH APPEAR ON SEPARATED ONES OF PLURALITY OF SIGNAL LINES AT DIFFERENT TIME COMPRISING: A PLURALITY OF STORAGE MEANS EACH FOR RECEIVING THE INDIVIDUAL SIGNALS FROM A DIFFERENT ONE OF SAID SIGNAL LINES, A VARIABLE FREQUENCY CLOCK ASSOCIATED WITH EACH SIGNAL LINE, A FREQUENCY COMPARATOR FOR EACH SIGNAL LINE OPERATIVE TO PRODUCE A SIGNAL INDICATIVE OF A DIFFERENCE IN THE RATE THAT SIGNALS ARE RECEIVED AT ITS TWO INPUTS, MEANS FOR DIRECTLY CONNECTING EACH SIGNAL LINE TO AN INPUT OF ITS ASSOCIATED FREQUENCY COMPARATOR, MEANS FOR CONNECTING THE OUTPUT OF THE VARIABLE FREQUENCY CLOCK TO THE OTHER INPUT OF THE FREQUENCY COMPARATOR, MEANS OPERATIVE FOR CHANGING THE FREQUENCY OF THE VARIABLE FREQUENCY CLOCK UNDER CONTROL OF THE DIFFERENCE SIGNAL GENERATED BY THE FREQUENCY COMPARATOR, AND MEANS FOR TRANSMITTING SIGNALS FROM EACH SIGNAL LINE TO ITS ASSOCIATED STORAGE MEANS UNDER CONTROL OF ITS ASSOCIATED VARIABLE FREQUENCY CLOCK.
Claim 2
Dependent Claim
156 words
A CIRCUIT FOR ASSEMBLING THE INDIVIDUAL SIGNAL OF A GROUP WHICH APPEAR ON SEPARATED ONES OF PLURALITY OF SIGNAL LINES AT DIFFERENT TIME COMPRISING: A PLURALITY OF STORAGE MEANS EACH FOR RECEIVING THE INDIVIDUAL SIGNALS FROM A DIFFERENT ONE OF SAID SIGNAL LINES, A VARIABLE FREQUENCY CLOCK ASSOCIATED WITH EACH SIGNAL LINE, A FREQUENCY COMPARATOR FOR EACH SIGNAL LINE OPERATIVE TO PRODUCE A SIGNAL INDICATIVE OF A DIFFERENCE IN THE RATE THAT SIGNALS ARE RECEIVED AT ITS TWO INPUTS, MEANS FOR DIRECTLY CONNECTING EACH SIGNAL LINE TO AN INPUT OF ITS ASSOCIATED FREQUENCY COMPARATOR, MEANS FOR CONNECTING THE OUTPUT OF THE VARIABLE FREQUENCY CLOCK TO THE OTHER INPUT OF THE FREQUENCY COMPARATOR, MEANS OPERATIVE FOR CHANGING THE FREQUENCY OF THE VARIABLE FREQUENCY CLOCK UNDER CONTROL OF THE DIFFERENCE SIGNAL GENERATED BY THE FREQUENCY COMPARATOR, AND MEANS FOR TRANSMITTING SIGNALS FROM EACH SIGNAL LINE TO ITS ASSOCIATED STORAGE MEANS UNDER CONTROL OF ITS ASSOCIATED VARIABLE FREQUENCY CLOCK.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |