US3376412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital frequency filter and function generator
Assignee: Honeywell Inc
•
Filing: 1963-12-13
•
Granted: 1968-04-02
•
Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Prager Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:41
CPC Classifications
H; H03; H03B; H03B23/00; G; G06; G06F; G06F7/00; G06F7/60; G06F7/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A DIGITAL FILTER COMPRISING: MEANS FOR SERIAL-MEMORY-TIME-COMPRESSING PULSE SAMPLINGS, TAKEN AT A PREDETERMINED RATE, OF ONLY THE FREQUENCY OF AN INPUT SIGNAL; AND MEANS FOR TIME-EXPANDING THE COMPRESSED PULSE SAMPLINGS SO AS TO PROVIDE AN OUTPUT SIGNAL HAVING A FREQUENCY WHICH IS A WEIGHTED AVERAGE, OVER A PREDETERMINED TIME PERIOD, OF THE INPUT SIGNAL FREQUENCY.
Claim 2
Dependent Claim
55 words
A DIGITAL FILTER COMPRISING: MEANS FOR SERIAL-MEMORY-TIME-COMPRESSING PULSE SAMPLINGS, TAKEN AT A PREDETERMINED RATE, OF ONLY THE FREQUENCY OF AN INPUT SIGNAL; AND MEANS FOR TIME-EXPANDING THE COMPRESSED PULSE SAMPLINGS SO AS TO PROVIDE AN OUTPUT SIGNAL HAVING A FREQUENCY WHICH IS A WEIGHTED AVERAGE, OVER A PREDETERMINED TIME PERIOD, OF THE INPUT SIGNAL FREQUENCY.
References Cited (Backward Citations)
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Cited
US2910237A
Cited
US2892933A
Cited
US2958039A
Cited
US2951202A
Cited
US3184663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |