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Patent US3094666A successfully refreshed from Google Patents.
US3094666A
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Quadrature axis-crossing counter
Assignee: Laboratory For Electronics Inc
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Filing: 1961-05-01
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Granted: 1963-06-18
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Roger S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:51
CPC Classifications
G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN AXIS-CROSSING COUNTER COMPRISING: MEANS FOR DERIVING FROM AN INPUT SIGNAL AN IDENTICAL SIGNAL SHIFTED IN PHASE RELATIVE TO THE INPUT SIGNAL, MEANS APPLYING THE INPUT SIGNAL TO A FIRST SIGNAL CHANNEL, MEANS APPLYING THE PHASE SHIFTED SIGNAL TO A SECOND SIGNAL CHANNEL, MEANS IN THE SECOND CHANNEL FOR OBTAINING GATING SIGNALS FROM THE PHASE SHIFTED SIGNAL, MEANS IN THE FIRST CHANNEL FOR DERIVING PULSES AT THE AXIS CROSSINGS OF THE INPUT SIGNAL, MEANS APPLYING PULSES REPRESENTING POSITIVE SLOPE AXIS CROSSINGS OF THE INPUT SIGNAL TO A FIRST GATE, MEANS APPLYING PULSES REPRESENTING NEGATIVE SLOPE AXIS CROSSINGS OF THE INPUT SIGNAL TO A SECOND GATE, THE FIRST AND SECOND GATES BEING ENABLED BY THE GATING SIGNALS FROM THE SECOND CHANNEL TO PASS THE APPLIED PULSES TO THE INPUTS OF A PULSE DIFFERENCING DEVICE.
Claim 2
Dependent Claim
133 words
AN AXIS-CROSSING COUNTER COMPRISING: MEANS FOR DERIVING FROM AN INPUT SIGNAL AN IDENTICAL SIGNAL SHIFTED IN PHASE RELATIVE TO THE INPUT SIGNAL, MEANS APPLYING THE INPUT SIGNAL TO A FIRST SIGNAL CHANNEL, MEANS APPLYING THE PHASE SHIFTED SIGNAL TO A SECOND SIGNAL CHANNEL, MEANS IN THE SECOND CHANNEL FOR OBTAINING GATING SIGNALS FROM THE PHASE SHIFTED SIGNAL, MEANS IN THE FIRST CHANNEL FOR DERIVING PULSES AT THE AXIS CROSSINGS OF THE INPUT SIGNAL, MEANS APPLYING PULSES REPRESENTING POSITIVE SLOPE AXIS CROSSINGS OF THE INPUT SIGNAL TO A FIRST GATE, MEANS APPLYING PULSES REPRESENTING NEGATIVE SLOPE AXIS CROSSINGS OF THE INPUT SIGNAL TO A SECOND GATE, THE FIRST AND SECOND GATES BEING ENABLED BY THE GATING SIGNALS FROM THE SECOND CHANNEL TO PASS THE APPLIED PULSES TO THE INPUTS OF A PULSE DIFFERENCING DEVICE.
References Cited (Backward Citations)
US2716189A
Cited
US2892945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |