Patent US3738918A successfully refreshed from Google Patents.
US4034352A
Expired / Lapsed
US
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Phase control of clock and sync pulser
Assignee: United States Department of the Army
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Filing: 1976-02-20
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Granted: 1977-07-05
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Expires: 1996-02-20
Abstract
Abstract Alignment of sync pulses is provided by an automatic selection of a properath, which is delayed or not delayed, of the sync pulses. The selection is made on the basis of error criteria. A comparator compares the sync pulses and sends an error signal to a sync pulse adjuster which makes the determination of the path to which a sync pulse is directed.
Inventors
- 👤 LaVerne C. Hotchkiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:17
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/64; H03K23/66; H03K23/665; H04; H04N; H04N7/00; H04N7/14; H04N7/141; H04N7/147
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
In a system having gating circuitry which is to feed information from two different sources each having its own independent timing clocks into a processing device; the improvement comprising sync means connected to the gating circuitry so as to cause both sources to enter processing means at the same time; an additional gate device having an input connected to one of said sources and an output; comparator means having two inputs and an output; one input of said comparator being connected to the output of said additional gate device and the other input being connected to the other one of said sources; said sync means being fed to said additional gate device so as to time the receipt of the information to said comparator in accordance with the sync timing; said comparator producing an error output when its two inputs are not synchronized; and sync correcting means having a control input connected to the output of said comparator.
Claim 2
Dependent Claim
158 words
In a system having gating circuitry which is to feed information from two different sources each having its own independent timing clocks into a processing device; the improvement comprising sync means connected to the gating circuitry so as to cause both sources to enter processing means at the same time; an additional gate device having an input connected to one of said sources and an output; comparator means having two inputs and an output; one input of said comparator being connected to the output of said additional gate device and the other input being connected to the other one of said sources; said sync means being fed to said additional gate device so as to time the receipt of the information to said comparator in accordance with the sync timing; said comparator producing an error output when its two inputs are not synchronized; and sync correcting means having a control input connected to the output of said comparator.
Claim 3
Dependent Claim
39 words
A system as set forth in claim 1 further comprising a first register connected between said additional gate device and said comparator means; and a second register connected between said other one of said sources and said comparator means.
Claim 4
Dependent Claim
47 words
A system as set forth in claim 2 wherein said sync correcting means comprises circuit means having a plurality of paths; said output of the comparator being connected to control which path said sync travels; and said paths being of different electrical lengths with respect to time.
References Cited (Backward Citations)
US3418637A
Cited
US3980820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |