US3375449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency divider with variable digital ratio
Assignee: International Standard Electric Corp
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Filing: 1965-05-12
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Granted: 1968-03-26
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Ribour Jean Louis
- 👤 Garin Henry Fernand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:20
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/64; H03K23/66; H03K23/665; G; G06; G06F; G06F7/00; G06F7/60; G06F7/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A VARIABLE PULSE FREQUENCY DIVIDER FOR COUNTING INCOMING PULSES AND PRODUCING AN OUTPUT PULSE FOR EACH GROUP OF INPUT PULSES EQUAL IN QUANTITY TO THE NUMBER BY WHICH THE FREQUENCY IS BEING DIVIDED, SAID NUMBER HAVING A PLURALITY OF DIGITAL POSITIONS, COMPRISING A PULSE COUNTER; MEANS FOR APPLYING THE INPUT PULSES TO SAID PULSE COUNTER; MEANS FOR SETTING UP PHYSICAL CONDITIONS FOR EACH DIGITAL POSITION RELATED TO THE COMPLEMENT OF THE CORRESPONDING DIGIT OF SAID NUMBER; MEANS RESPONSIVE TO THE COMBINATION OF SAID PHYSICAL CONDITIONS FOR EACH DIGITAL POSITION AND THE STATE OF SAID PULSE COUNTER EACH TIME IT HAS COUNTED UP TO A PREDETERMINED NUMBER ASSIGNED TO SAID DIGITAL POSITION, TO PRODUCE A SIGNAL; AND CYCLIC PROGRAMMING MEANS RESPONSIVE TO SUCCESSIVELY SELECTED ONES OF SAID SIGNALS FOR CONTROLLING SAID PULSE COUNTER AND PRODUCING AN OUTPUT PULSE.
Claim 2
Dependent Claim
137 words
A VARIABLE PULSE FREQUENCY DIVIDER FOR COUNTING INCOMING PULSES AND PRODUCING AN OUTPUT PULSE FOR EACH GROUP OF INPUT PULSES EQUAL IN QUANTITY TO THE NUMBER BY WHICH THE FREQUENCY IS BEING DIVIDED, SAID NUMBER HAVING A PLURALITY OF DIGITAL POSITIONS, COMPRISING A PULSE COUNTER; MEANS FOR APPLYING THE INPUT PULSES TO SAID PULSE COUNTER; MEANS FOR SETTING UP PHYSICAL CONDITIONS FOR EACH DIGITAL POSITION RELATED TO THE COMPLEMENT OF THE CORRESPONDING DIGIT OF SAID NUMBER; MEANS RESPONSIVE TO THE COMBINATION OF SAID PHYSICAL CONDITIONS FOR EACH DIGITAL POSITION AND THE STATE OF SAID PULSE COUNTER EACH TIME IT HAS COUNTED UP TO A PREDETERMINED NUMBER ASSIGNED TO SAID DIGITAL POSITION, TO PRODUCE A SIGNAL; AND CYCLIC PROGRAMMING MEANS RESPONSIVE TO SUCCESSIVELY SELECTED ONES OF SAID SIGNALS FOR CONTROLLING SAID PULSE COUNTER AND PRODUCING AN OUTPUT PULSE.
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |