US3647953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for phasing recorded information with input signals
Assignee: Westinghouse Electric Corp
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Filing: 1969-10-06
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Granted: 1972-03-07
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Expires: 1989-10-06
Abstract
Abstract A system for correlating recorded synchronizing signals, recorded on a magnetic recording disc, for example, with alternating input signals, utilized for driving the disc for example, wherein timing signals, such as vertical blanking signals provided in response to the recorded synchronizing information, are compared with reference signals, generated, for example, in response to a predetermined characteristic of the input signals, to provide an output when an undesired relationship exists therebetween which is utilized to establish a desired relationship between the recorded synchronizing information and the input signals.
Inventors
- 👤 Clyde A Booker Jr
- 👤 Francis T Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:44
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/781; H04N7/00; H04N7/18; H04N5/30; H04N5/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
In a system for correlating recorded synchronizing information prerecorded on a first track of a recording disc with input alternating signals for driving said recording disc wherein video information is recorded on a second track of said recording disc under the control of said recorded synchronizing information, the combination of: means responsive to a characteristic of said input alternating signals for providing reference signals having a predetermined relationship with said input alternating signals; means responsive to said recorded synchronizing information for providing timing signals; means for comparing said timing signals and said reference signals and providing an output when the occurrence of said timing signals and said reference signals have an undesired relationship; and means for correcting the time at which said timing signals occur in response to said output so that a desired relationship between said timing and reference signals is established.
Claim 2
Dependent Claim
143 words
In a system for correlating recorded synchronizing information prerecorded on a first track of a recording disc with input alternating signals for driving said recording disc wherein video information is recorded on a second track of said recording disc under the control of said recorded synchronizing information, the combination of: means responsive to a characteristic of said input alternating signals for providing reference signals having a predetermined relationship with said input alternating signals; means responsive to said recorded synchronizing information for providing timing signals; means for comparing said timing signals and said reference signals and providing an output when the occurrence of said timing signals and said reference signals have an undesired relationship; and means for correcting the time at which said timing signals occur in response to said output so that a desired relationship between said timing and reference signals is established.
Claim 3
Dependent Claim
56 words
The combination of claim 1 wherein: said recorder synchronizing information has a predetermined clock frequency, said means responsive to said recorded synchronizing information comprises divider means for dividing said recorded synchronizing information by a predetermined divisor to provide said timing signals at a desired frequency equal to said predetermined clock frequency divided by said predetermined divisor.
Claim 4
Dependent Claim
23 words
The combination of claim 2 wherein: said desired frequency of said timing signals is at the vertical scanning rate of said video information.
Claim 5
Dependent Claim
27 words
The combination of claim 3 wherein: said video signals are supplied from a television camera, said timing signals comprise vertical blanking signals having a predetermined time duration.
Claim 6
Dependent Claim
46 words
The combination of claim 4 wherein: said divisor means is reset to a selected state in response to said output so that said vertical synchronizing signals may deviate from the desired relationship by a predetermined amount before said output is given by said means for comparing.
References Cited (Backward Citations)
US3017462A
Cited
US3515127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |