Patent ID: 7421190
Filing Date: 2008-09-02
Classification: G11B,H04N

Abstract:
1. A video tape recorder for sequentially and diagonally forming recording tracks on a magnetic tape and recording compressed video data, compressed audio data, and data relating to the video data and the audio data on the magnetic tape, the video tape recorder is characterized by comprising: pack-unit generating means for blocking the video data in units of a predetermined number of blocks to generate a pack unit including a combination of the video data in the block, the corresponding audio data, and the related data; management-information generating means for generating management information serving as a reproduction reference when the video data is reproduced from the magnetic tape, from time management information when the video data is decompressed and output; delay means for delaying data output from the pack-unit generating means; a recording system for recording the data output from the pack-unit generating means on the magnetic tape along with the management information serving as the reproduction reference; and controlling means for varying a delay time generated in the delay means, wherein the controlling means varies the delay time generated in the delay means such that the recording position of the head of each pack unit is set to a position having a predetermined relationship with the recording position determined by the management information serving as the corresponding reproduction reference and wherein the head of each pack unit, which is the position having the predetermined relationship, precedes the recording position determined by the management information serving as the reproduction reference corresponding to the time management information by an amount given by adding a predetermined preceding amount to the delay time in the decoding at the head of the pack unit.