Patent ID: 6826353
Filing Date: 2004-11-30
Classification: G11B,H04N

Abstract:
An optical disk recording digital image information, at least a portion of which is accessed by a playback device during playback to reproduce images, the digital image information including I-picture data of an I-picture obtained by intra-frame DCT encoding, P-picture data of one or more P-pictures obtained by DCT encoding with forward motion compensation, and B-picture data of B-pictures obtained by DCT encoding with motion compensation using the data of the I- and/or P-pictures positioned in front and at the back thereof as reference pictures, said disk comprising:a plurality of sectors; tracks each corresponding to one revolution of the optical disk; and zones each composed of a plurality of tracks adjacent to each other in the radial direction of the optical disk; each sector being provided with a preformatted sector address and preformatted mirror part; the sector addresses and the mirror parts within each zone being aligned in the radial direction of the optical disk; said digital image information including a plurality of image information blocks; said image information block including the I-, P-, and B-pictures, and having an attribute data region positioned preceding the I-, P-, and B-pictures for describing the attribute data of the image information block, said attribute data being read by said playback device during playback to control reproduction of digital image information; said attribute data including a time code corresponding to the image information block; and said attribute data region being disposed following the sector address and the mirror part.