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EP0246883A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Apparatus for reproducing digital data

Assignee: Sony Corp
•
Filing: 1987-05-20
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Granted: —
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Expires: 2007-05-20
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Abstract

Abstract In a digital video tape recorder designed for recording each unit of video data in a plurality of tracks aimultaneously by the use of a plurality of magnetic heads, the shift value between a track scanned by a magnetic head in a reproducing mode and another track recorded previously by the same magnetic head is decided from the majority of shift values obtained with respect to the individual magnetic heads, and the contents of identifying signals included in the pickup data are determined in accordance with the majority-decided shift value, whereby accurate shift values and identifying signals are ensured to consequently realize satisfactory picture reproduction.

Inventors

  • 👤 Tadaaki Yoshinaka

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 22:10
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; G11B20/10527; H04N5/9201; H04N5/93; H04N5/937

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 125 words
An apparatus for reproducing digital data one unit of which is divided into a plurality of channels, added with at least one kind of identifying data and recorded on a plurality of tracks of a tape recording medium, the apparatus comprising: a plurality of reproducing heads corresponding to said tracks for reproducing digital data from the recording medium; means for detecting said identifying data added to said reproduced digital data on respective reproduced tracks; means for detecting respective relationships between said reproducing heads and the tracks reproduced by said reproducing heads in said respective channels; means for determining an optimum relationship from said relationships; and means for determining identifying data based on said optimum relationship and for driving said identifying data to said respective channels.
Claim 2
Independent Claim 125 words
An apparatus for reproducing digital data one unit of which is divided into a plurality of channels, added with at least one kind of identifying data and recorded on a plurality of tracks of a tape recording medium, the apparatus comprising: a plurality of reproducing heads corresponding to said tracks for reproducing digital data from the recording medium; means for detecting said identifying data added to said reproduced digital data on respective reproduced tracks; means for detecting respective relationships between said reproducing heads and the tracks reproduced by said reproducing heads in said respective channels; means for determining an optimum relationship from said relationships; and means for determining identifying data based on said optimum relationship and for driving said identifying data to said respective channels.
Claim 3
Independent Claim 27 words
An apparatus according to claim l, wherein said means for determining an optimum relationship deter­mines one of said relationships as said optimum relation­ship by a majority logic.
Claim 4
Independent Claim 46 words
An apparatus according to claim l, wherein said means for determining identifying data comprises means for determining which identifying data of respective channels are closest to the determined identifying data and means for driving the closest identifying data as said identifying data for the respective channels.

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