US 6,925,250 B1Granted

Optical disc for recording high resolution and normal image, optical disc player, optical disc recorder, and playback control information generator

AssigneeMatsushita Electric Industrial Co., Ltd.

InventorsMitsuaki Oshima, Hiromu Kitaura, Hideki Fukuda, Hideshi Ishihara

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Abstract

The present invention has an objective of realizing compatibility of an optical disk having a high resolution video signal recorded thereon and a system for reproducing the optical disk, with a conventional system for producing a standard resolution video signal. A high resolution-video signal is divided by video division means into a main signal and a sub signal, and the main signal and the sub signal are MPEG-encoded. The stream of the main signal and the stream of the sub signal are divided into 1 GOP or more of frames. First interleave blocks 54 each including 1 GOP or more of the stream of the main signal and second interleave blocks 55 each including 1 GOP or more of the stream of the sub signal are recorded on an optical disk 1. A high resolution reproduction apparatus reproduces both the first and second interleave blocks to obtain a high resolution video output. A non-high quality picture reproduction apparatus reproduces only the first or second interleave blocks to obtain a standard resolution video output.

Claims21

Dependent claims

An optical disk reproduction apparatus for reproducing a signal recorded on an optical disk, in which the optical disk has, recorded thereon, at least a first video stream representing a low frequency component of the video signal and a second video stream representing at least a high frequency component of the video signal, the first video stream includes a plurality of first interleave units and the second video stream includes a plurality of second interleave units, each of the plurality of first interleave units includes m1 GOPs (where m1 is an integer of 1 or greater), each of the plurality of second interleave units includes m2 GOPs (where m2 is an integer of 1 or greater), the optical disk reproduction apparatus comprising:

a reproduction section for reproducing the first video stream and the second video stream recorded on the optical disk;
a division section for dividing the reproduced first video stream into the plurality of first interleave units and for dividing the reproduced second video stream into the plurality of second interleave units;
a decoding section for decoding the plurality of first interleave units to generate a first reproduction signal representing the low frequency component of the video signal and for decoding the plurality of second interleave units to generate a second reproduction signal representing at least the high frequency component of the video signal;
a synthesis section for synthesizing the first reproduction signal and the second reproduction signal to generate the video signal;
and
an output section for selectively outputting at least one of the first reproduction signal, the second reproduction signal, and the video signal.

3 more elements

An optical disk recording apparatus, comprising:

a dividing section for dividing a video signal into a first video signal representing a low frequency component of the video signal and a second video signal representing at least a high frequency component of the video signal;an encoding section for generating a first video stream by encoding the first video signal and for generating a second video stream by encoding the second video signal, wherein:
the first video stream includes a plurality of first interleave units, the second video stream includes a plurality of second interleave units, each of the plurality of first interleave units includes m1 GOPs (where m1 is an integer of 1 or greater), and each of the plurality of second interleave units includes m2 GOPs (where m2 is an integer of 1 or greater);
a selection output section for selectively outputting the plurality of first interleave units included in the first video stream and the plurality of second interleave units included in the second video stream;
and
a recording section for recording the signal output from the selection output section on an optical disk.

2 more elements

Dependencies are inferred from the claim text.