公开(公告)号：FR2397037A1

公开(公告)日：1979-02-02

申请号：FR7818487

申请日：1978-06-13

Applicant: IBM

Inventor： BAILEY JACK H ,  OTTAWAY GERALD H

IPC: G11B7/013 ,  G11B17/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/10 ,  H04N5/76 ,  H04N5/92 ,  H04N5/926 ,  H04N9/804 ,  H04N9/806 ,  H04N9/877 ,  H04N9/888 ,  G11B7/00

Abstract: A video recording disk is adapted to be rotated at a uniform angular velocity and to have bit positions of substantially equal length along a track, and the longer outer tracks are given more storage positions than the shorter inner tracks. Variable numbers of frames are located on each track revolution, depending on the data capacity of the track. Frames are divided into data units that correspond to a few horizontal lines, and frames on the same track are interlaced so that the data units of each frame are distributed evenly around the track revolution. The associated record player has simplified data storage requirements, particularly for freeze frame display of the television picture and for playing disks that hold video information in a data compression format.

公开(公告)号：DE2828263A1

公开(公告)日：1979-01-18

申请号：DE2828263

申请日：1978-06-28

Applicant: IBM

Inventor： BAILEY JACK H ,  OTTAWAY GERALD H

IPC: G11B7/013 ,  G11B17/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/10 ,  H04N5/76 ,  H04N5/92 ,  H04N5/926 ,  H04N9/804 ,  H04N9/806 ,  H04N9/877 ,  H04N9/888

Abstract: A video recording disk is adapted to be rotated at a uniform angular velocity and to have bit positions of substantially equal length along a track, and the longer outer tracks are given more storage positions than the shorter inner tracks. Variable numbers of frames are located on each track revolution, depending on the data capacity of the track. Frames are divided into data units that correspond to a few horizontal lines, and frames on the same track are interlaced so that the data units of each frame are distributed evenly around the track revolution. The associated record player has simplified data storage requirements, particularly for freeze frame display of the television picture and for playing disks that hold video information in a data compression format.