US4329718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video tape recording and reproducing apparatus with line base correction
Assignee: Olympus Corp
•
Filing: 1980-02-19
•
Granted: 1982-05-11
•
Expires: 2000-02-19
Abstract
Abstract A video-tape recording and reproducing apparatus comprises: a transformer system to divide the field signal into multi-channel transformer signals; a system to record and reproduce these multi-channel transformer signals using a multiple magnetic head; a jitter detection head to record and reproduce fixed frequency signals placed in juxtaposition with the above-mentioned magnetic head; and a system to mix the jitter component signal produced by the jitter detection head, after pole reversal, into each channel of the above-mentioned transformer signal. This video-tape recording and reproducing apparatus achieves high quality video reproduction by eliminating noise caused by tape travel irregularity.
Inventors
- 👤 Kenji Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:38
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/95; H04N5/917; H04N5/919
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A video-tape recording and reproducing apparatus comprising a transformer system to divide the field signal into multi-channel transformer signals; a system to record and reproduce these multi-channel transformer signals using a multiple magnetic head; a jitter detection head to record and reproduce fixed frequency signals placed in juxtaposition with the above-mentioned magnetic heads; and a system to mix the jitter component signal produced by the jitter detection head, after pole reversal, into each channel of the above-mentioned transformer signal.
Claim 2
Dependent Claim
79 words
A video-tape recording and reproducing apparatus comprising a transformer system to divide the field signal into multi-channel transformer signals; a system to record and reproduce these multi-channel transformer signals using a multiple magnetic head; a jitter detection head to record and reproduce fixed frequency signals placed in juxtaposition with the above-mentioned magnetic heads; and a system to mix the jitter component signal produced by the jitter detection head, after pole reversal, into each channel of the above-mentioned transformer signal.
Claim 3
Dependent Claim
21 words
A video-tape recording and reproducing apparatus as set forth in claim 1 wherein the transformer system is a Hadamard Transformation System.
Claim 4
Dependent Claim
20 words
A video-tape recording and reproducing apparatus as set forth in claim 1 wherein the transformer system is a Time-Sharing System.
Claim 5
Dependent Claim
30 words
A video-tape recording and reproducing apparatus as set forth in claim 1 wherein a jitter detection head is positioned to correspond with the centre of the width of magnetic tape.
Claim 6
Dependent Claim
39 words
A video-tape recording and reproducing apparatus as set forth in claim 1 wherein the recording and reproducing magnetic heads which correspond with channels easily influenced by jitter component signals are positioned in close proximity to the jitter detection head.
Claim 7
Dependent Claim
55 words
An apparatus as in claim 1, wherein said mixing system includes polarity reversal means for reversing the polarity of the jitter signal and mixing means for mixing the reversed jitter signal with the signal in each channel, and wherein said channels each include a time base corrector for correcting the time base of each channel.
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) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |