US5574570A
Expired / Lapsed
US
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Video signal recording/reproduction apparatus and method for recording/reproducing two kinds of video signals carrying different amounts of information
Assignee: Mitsubishi Electric Corp
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Filing: 1993-05-06
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Granted: 1996-11-12
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Expires: 2013-05-06
Abstract
Abstract When recording HD video signals, twice the number of tracks are used as compared to recording the conventional NTSC video signals, and video signals are recorded in the audio sector. HD video signals are encoded with the same number of checks as the error-correcting code of the present video signals, with the number of information symbols being increased. When recording HD video signals and present video signals, these signals are encoded so that the shortest recording wavelength is the same with either signal.
Inventors
- 👤 Ikuo Ohkuma
- 👤 Makoto Kumano
- 👤 Kihei Ido
- 👤 Ken Onishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:46
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B20/00; G11B20/10; G11B20/18; G11B20/1806; G11B20/1813; G11B27/02; G11B27/031; G11B27/036; H; H03; H03M; H03M13/00; H03M13/35; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; H04N9/806; H04N9/8063; H04N9/8066; H04N9/82; H04N9/8205; H04N9/8227; H04N9/87; H04N9/88; H04N9/888; G11B2220/00; G11B2220/90; G11B27/032
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
152 words
A video signal recording/and reproduction apparatus for recording first video signals of a first amount of information and second video signals of a second amount of information different from the first amount of information, in oblique tracks, comprising: first recording processor for controlling the recording of the first video signals in first type recording tracks including at least an audio sector and a video sector; and second recording processor for controlling the recording of the second video signals in N recording tracks including the first type recording tracks and second type recording tracks, N being a real number multiple of the number of tracks recording the first video signals greater than one, at least a portion of the second video signals being recorded in areas of the second type recording tracks positionally corresponding to the audio sector of the first type recording tracks, the second type recording tracks not including audio sectors.
Claim 2
Dependent Claim
152 words
A video signal recording/and reproduction apparatus for recording first video signals of a first amount of information and second video signals of a second amount of information different from the first amount of information, in oblique tracks, comprising: first recording processor for controlling the recording of the first video signals in first type recording tracks including at least an audio sector and a video sector; and second recording processor for controlling the recording of the second video signals in N recording tracks including the first type recording tracks and second type recording tracks, N being a real number multiple of the number of tracks recording the first video signals greater than one, at least a portion of the second video signals being recorded in areas of the second type recording tracks positionally corresponding to the audio sector of the first type recording tracks, the second type recording tracks not including audio sectors.
Claim 3
Dependent Claim
78 words
The video signal recording and reproduction apparatus as claimed in claim 1, wherein the second video signals are recorded on twice the number of tracks as that used for recording the first video signals, including the first type recording tracks and the second type recording tracks wherein at least a portion of the second video signals are recorded on the second type recording tracks in areas positionally corresponding to the audio sectors of the first type recording tracks.
Claim 4
Dependent Claim
49 words
The video signal recording and reproduction apparatus as claimed in claim 1, wherein the second video signals are recorded on twice the number of tracks as that used for recording the first video signals, with at least two kinds of error-correcting codes being recorded for the second video signals.
Claim 5
Dependent Claim
59 words
The video signal recording and reproduction apparatus as claimed in claim 1, wherein the first video signals are standard video signals of 525 scan lines of a field frequency of about 60 Hz or standard video signals of 625 scan lines of a field frequency of about 50 Hz, and the second video signals are high definition video signals.
Claim 6
Dependent Claim
74 words
The video signal recording and reproduction apparatus as claimed in claim 4, wherein the high definition video signals are recorded on twice the number of tracks as that used for recording the standard video signals, including the second type recording tracks wherein at least a portion of the high definition video signals are recorded in the second type recording tracks in areas positionally corresponding to the audio sectors of the first type recording tracks.
Claim 7
Dependent Claim
51 words
The video signal recording and reproduction apparatus as claimed in claim 4, wherein the high definition video signals are recorded on twice the number of tracks as that used for recording the standard video signals, with at least two kinds of error-correcting codes being recorded for the high definition video signals.
Claim 8
Dependent Claim
51 words
The video signal recording and reproduction apparatus of claim 1, wherein at least one of the first and second recording processor further controls the recording of audio signals, corresponding to at least one of the first and second video signals, respectively, in the audio sectors of the first type recording tracks.
Claim 9
Dependent Claim
28 words
The video signal recording and reproduction apparatus of claim 7, wherein the second video signals are recorded on twice the number of tracks as the first video signals.
Claim 10
Dependent Claim
27 words
The video signal recording and reproduction apparatus of claim 1, further comprising: reproduction means for reproducing at least one of the recorded first and second video signals.
Claim 11
Dependent Claim
34 words
The video signal recording and reproduction apparatus of claim 9, wherein the reproduction means includes, first reproducing means for reproducing recorded first video signals, and second reproducing means for reproducing recorded second video signals.
Claim 12
Dependent Claim
32 words
The video signal recording and reproduction apparatus of claim 10, wherein the second reproducing means reproduces second video signals recorded in the first type recording tracks and the second type recording tracks.
Claim 13
Dependent Claim
43 words
The video signal recording and reproducing apparatus of claim 1, further comprising: reproduction means for reproducing at least one of the first and second video signals recorded in at least one of the first type recording tracks and the second type recording tracks.
Claim 14
Dependent Claim
57 words
The video signal recording and reproducing apparatus of claim 12, wherein the reproduction means includes, first means for reproducing at least one of first and second video signals recorded in the first type recording tracks; and second means for reproducing at least one of the first and second video signals recorded in the second type recording tracks.
Claim 15
Dependent Claim
88 words
The video signal recording and reproduction apparatus of claim 1, wherein the first video signals and the second video signals are recorded on a tape, further comprising: a digital demodulation processor for digitally demodulating data reproduced from the tape; a first video signal reproduction processor for restoring the first video signals from the digitally demodulated data; an audio signal reproduction processor for restoring audio signals from the digitally demodulated data; and a second video signal reproduction processor for restoring the second video signals from the digitally demodulated data.
Claim 16
Dependent Claim
121 words
A video signal recording and reproducing method for recording first video signals of a first amount of information and second video signals of a second amount of information different from the first amount of information, comprising the steps of: (a) recording the first video signals in first type recording tracks, including at least an audio sector and a video sector; and (b) recording the second video signals in at least the first type recording tracks and second type recording tracks, the second type recording tracks not including an audio sector, at least a portion of the second video signals being recorded in areas of the second type recording tracks positionally corresponding to the audio sectors of the first type recording tracks.
Claim 17
Dependent Claim
121 words
A video signal recording and reproducing method for recording first video signals of a first amount of information and second video signals of a second amount of information different from the first amount of information, comprising the steps of: (a) recording the first video signals in first type recording tracks, including at least an audio sector and a video sector; and (b) recording the second video signals in at least the first type recording tracks and second type recording tracks, the second type recording tracks not including an audio sector, at least a portion of the second video signals being recorded in areas of the second type recording tracks positionally corresponding to the audio sectors of the first type recording tracks.
Claim 18
Dependent Claim
56 words
The video signal recording and reproducing method of claim 15, wherein the second video signals are recorded in N recording tracks, N being a real number multiple of a number of tracks recording the first video signals, the second video signals being recorded in both the first type recording tracks and the second type recording tracks.
Claim 19
Dependent Claim
41 words
The video signal recording and reproducing method of claim 16, further comprising the step of: (c) recording audio signals, corresponding to either the first video signals or the second video signals, in the audio sectors of the first type recording tracks.
Claim 20
Dependent Claim
28 words
The video signal recording and reproducing method of claim 17, wherein the second video signals are recorded in twice the number of tracks as the first video signals.
Claim 21
Dependent Claim
35 words
The video signal recording and reproducing method of claim 15, wherein the first video signals are standard video signals of 525 or 625 scan lines and the second video signals are high definition video signals.
Claim 22
Dependent Claim
28 words
The video signal recording and reproducing method of claim 15, further comprising the steps of: (c) reproducing at least one of the recorded first and second video signals.
Claim 23
Dependent Claim
32 words
The video signal recording and reproducing method of claim 20, wherein recorded second video signals are reproduced from the first type recording tracks and the second type recording tracks in step (c).
Claim 24
Dependent Claim
90 words
The video signal recording and reproducing method of claim 15, wherein the first video signals are recorded on a tape in step (a) and the second video signals are recorded on the tape in step (b), further comprising the steps of: (c) digitally demodulating data reproduced from the tape; (d) restoring the first video signals from the digitally demodulated data of step (c); (e) restoring audio signals from the digitally demodulated data of step (c); and (f) restoring the second video signals from the digitally demodulated data of step (c).
Claim 25
Dependent Claim
105 words
A digitally recorded tape for reproduction on a tape reproduction apparatus comprising: first type tracks, including at least an audio sector and a video sector, storing at least one of recorded first video signals of a first amount of information and second video signals of a second amount of information different from the first amount of information in a video sector; and second type tracks, not including an audio sector, storing recorded second video signals, at least a portion of the second video signals being recorded on the second type tracks in an area positionally corresponding to the audio sector of the first type tracks.
Claim 26
Dependent Claim
105 words
A digitally recorded tape for reproduction on a tape reproduction apparatus comprising: first type tracks, including at least an audio sector and a video sector, storing at least one of recorded first video signals of a first amount of information and second video signals of a second amount of information different from the first amount of information in a video sector; and second type tracks, not including an audio sector, storing recorded second video signals, at least a portion of the second video signals being recorded on the second type tracks in an area positionally corresponding to the audio sector of the first type tracks.
Claim 27
Dependent Claim
23 words
The digitally recorded tape of claim 23, wherein the second video signals are recorded in both first type tracks and second type tracks.
Claim 28
Dependent Claim
24 words
The digitally recorded tape of claim 24, wherein the second video signals are recorded on twice as many tracks and the first video signals.
Claim 29
Dependent Claim
35 words
The digitally recorded tape of claim 24, wherein audio signals, corresponding to at least one of the first video signals and second video signals, are stored in the audio sectors of the first type tracks.
Claim 30
Dependent Claim
30 words
The digitally recorded tape of claim 23, wherein the first video signals are signals of 525 or 625 scan lines and the second video signals are high definition video signals.
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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) | 1999-11-12 | 2000-05-13 | 2000-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-12 | 2004-05-13 | 2004-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-12 | 2008-05-13 | 2008-11-12 | $7700.00 | Window Closed / Lapsed |