US4312019A
Expired / Lapsed
US
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Phase corrected video recording system
Assignee: Olympus Corp
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Filing: 1980-02-06
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Granted: 1982-01-19
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Expires: 2000-02-06
Abstract
Abstract A video tape recording apparatus with the use of an Hadamard transformation system is disclosed. The apparatus comprises means for distributing the video signal to a plurality of channels, means for recording and reproducing the distributed video signals by plurality of magnetic heads, means for synchronizing a time-base correction signal for time-base correction with a sampling signal for Hadamard transformation, and means for phase-controlling a sampling signal for Hadamard inverse transformation to the time-base correction signal in phase.
Inventors
- 👤 Kenji Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:52
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/95; H04N5/917; H04N5/919
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A video tape recording apparatus for recording and reproducing a video signal comprising: a plurality of channels, means for distributing the video signal to a plurality of channels, a plurality of magnetic heads, means for recording and reproducing the distributed video signals in the channels with the plurality of magnetic heads, means for forming a time-base correction signal synchronous with a sampling signal for Hadamard transformation, and means for detecting and phase-controlling a sampling signal for Hadamard inverse transformation to the phase of the time-base correction signal.
Claim 2
Dependent Claim
87 words
A video tape recording apparatus for recording and reproducing a video signal comprising: a plurality of channels, means for distributing the video signal to a plurality of channels, a plurality of magnetic heads, means for recording and reproducing the distributed video signals in the channels with the plurality of magnetic heads, means for forming a time-base correction signal synchronous with a sampling signal for Hadamard transformation, and means for detecting and phase-controlling a sampling signal for Hadamard inverse transformation to the phase of the time-base correction signal.
Claim 3
Dependent Claim
119 words
A video tape recording apparatus, comprising: distributing means for distributing a video signal to a plurality of channels, sampling means for sampling signals in each of the channels, transforming means for subjecting the sampled signals in each of the channels to a Hadamard transformation, head means for recording each of the channels and picking up the recorded signals in each channel, inverse transforming means for inverse-transforming the resampled signals, correction means for forming a time-base correction signal from a sampled signal and transmitting the corrected signal to the head means, and phase controlling means responsive to the recorded correction signal for phase controlling the resampled correction signal and applying the phase controlled correction signal to the inverse transforming means.
Claim 4
Dependent Claim
119 words
A video tape recording apparatus, comprising: distributing means for distributing a video signal to a plurality of channels, sampling means for sampling signals in each of the channels, transforming means for subjecting the sampled signals in each of the channels to a Hadamard transformation, head means for recording each of the channels and picking up the recorded signals in each channel, inverse transforming means for inverse-transforming the resampled signals, correction means for forming a time-base correction signal from a sampled signal and transmitting the corrected signal to the head means, and phase controlling means responsive to the recorded correction signal for phase controlling the resampled correction signal and applying the phase controlled correction signal to the inverse transforming means.
Claim 5
Dependent Claim
19 words
A device as in claim 2, wherein said correction means includes a phase shifter and a phase correction loop.
Claim 6
Dependent Claim
20 words
A device as in claim 2, where said phase controlling means includes a phase shifter and a phase correction loop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |