US3579126A
Expired / Lapsed
US
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Dual speed gated counter
Assignee: Sperry Rand Canada Ltd
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Filing: 1968-10-17
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Granted: 1971-05-18
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Expires: 1988-10-17
Abstract
Abstract Counting apparatus for determining the elapsed time between a reference pulse and the next following positive peak of a delayed sine wave irrespective of the DC level of the sine wave. The apparatus comprises a clock pulse source producing full rate and half rate pulses which are applied through respective gates to a single pulse counter. The first (full rate) gate is turned on by the reference pulse and is turned off upon the first following positive-going crossover of the delayed sine wave. The second (half rate) gate is turned on simultaneously with the termination of the first gate and is turned off upon the next following negative-going crossover of saId delayed sine wave.
Inventors
- 👤 John J Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
G; G04; G04F; G04F10/00; G04F10/04; G01; G01R; G01R25/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
327 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at onehalf said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than one-half said repetition rate, a source of delayed pulses that supplies pulses having a frequency less than said one-half said repetition rate and that supplies at least two of said delayed pulses after the occurrence of one of said reference pulses, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating means applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said repetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and saId next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 2
Dependent Claim
327 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at onehalf said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than one-half said repetition rate, a source of delayed pulses that supplies pulses having a frequency less than said one-half said repetition rate and that supplies at least two of said delayed pulses after the occurrence of one of said reference pulses, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating means applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said repetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and saId next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 3
Dependent Claim
333 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at one-half said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than said one-half said repetition rate, a source of delayed pulses which comprises a source of delayed sine wave signal and means coupled to receive said delayed sine wave signal for providing a delayed pulse each time said delayed sine wave signal passes through an arbitrary value, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating mans applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said repetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 4
Dependent Claim
333 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at one-half said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than said one-half said repetition rate, a source of delayed pulses which comprises a source of delayed sine wave signal and means coupled to receive said delayed sine wave signal for providing a delayed pulse each time said delayed sine wave signal passes through an arbitrary value, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating mans applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said repetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 5
Dependent Claim
406 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at one-half said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than said one-half said repetition rate, a source of delayed pulses which comprises a source of delayed sine wave signal and means coupled to receive said delayed sine wave signal for providing a delayed pulse each time said delayed sine wave signal passes through an arbitrary value, said means, coupled to receive said delayed sine wave signal for providing said delayed pulse, providing a first pulse when said delayed sine wave signal passes through said arbitrary value in a positive direction and providing a second pulse when said delayed sine wave signal passes through said arbitrary value in a negative direction, said first pulse being said one of said delayed pulses, said second pulse being said next following delayed pulse, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating means applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said rEpetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 6
Dependent Claim
406 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at one-half said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than said one-half said repetition rate, a source of delayed pulses which comprises a source of delayed sine wave signal and means coupled to receive said delayed sine wave signal for providing a delayed pulse each time said delayed sine wave signal passes through an arbitrary value, said means, coupled to receive said delayed sine wave signal for providing said delayed pulse, providing a first pulse when said delayed sine wave signal passes through said arbitrary value in a positive direction and providing a second pulse when said delayed sine wave signal passes through said arbitrary value in a negative direction, said first pulse being said one of said delayed pulses, said second pulse being said next following delayed pulse, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating means applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said rEpetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 7
Dependent Claim
361 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at one-half said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than said one-half said repetition rate, a source of delayed pulses which comprises a source of delayed sine wave signal and means coupled to receive said delayed sine wave signal for providing a delayed pulse each time said delayed sine wave signal passes through an arbitrary value, said delayed sine wave signal comprising a direct component having said arbitrary value, said means coupled to receive said delayed sine wave signal being a zero crossing detector, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating means applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said repetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
Claim 8
Dependent Claim
361 words
Apparatus for determining the time interval between a reference pulse and the midpoint between two subsequent delayed pulses comprising a clock pulse source generating pulses of a predetermined repetition rate including means for providing an output at one-half said repetition rate, a pulse counter, a source of reference pulses that supplies reference pulses having a frequency less than said one-half said repetition rate, a source of delayed pulses which comprises a source of delayed sine wave signal and means coupled to receive said delayed sine wave signal for providing a delayed pulse each time said delayed sine wave signal passes through an arbitrary value, said delayed sine wave signal comprising a direct component having said arbitrary value, said means coupled to receive said delayed sine wave signal being a zero crossing detector, and gating means coupled to said source of reference pulses to receive said reference pulses, to said source of delayed pulses to receive said delayed pulses, and to said clock pulse source to receive said predetermined repetition rate pulses and said one-half said repetition rate pulses, said gating means applying said predetermined repetition rate pulses to said counter during the time between one of said reference pulses and one of said delayed pulses following said one of said reference pulses and applying said one-half said repetition rate pulses to said counter during the time between said one of said delayed pulses and the next following delayed pulse, the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse being equivalent to the number of predetermined repetition rate pulses generated by said clock pulse source during the time period between said one delayed pulse and the midpoint between said one delayed pulse and said next following delayed pulse, whereby the total of said predetermined repetition rate pulses between said one reference pulse and said one delayed pulse plus the number of said one-half said repetition rate pulses between said one delayed pulse and said next following delayed pulse represents the time period between said one reference pulse and said midpoint between said one delayed pulse and said next following delayed pulse.
References Cited (Backward Citations)
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Cited
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |