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Recording medium, playback method, and playback device

專利號(hào)
US10867631B2
公開(kāi)日期
2020-12-15
申請(qǐng)人
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA(US CA Torrance)
發(fā)明人
Hiroshi Yahata; Tadamasa Toma
IPC分類
G11B20/10; G11B27/32; H04N5/85; H04N9/87; G11B27/10; H04N9/804; H04N9/82; H04N5/93
技術(shù)領(lǐng)域
playback,stream,video,subtitle,hdr,luminance,playlist,vob,in,hdre
地域: CA CA Torrance

摘要

A recording medium includes a video stream of a standard-luminance range and a video stream of high-luminance range, which are used selectively in accordance with a playback environment. The recording medium also includes a subtitle stream of the standard-luminance range and a subtitle stream of the high-luminance range, which are used selectively in accordance with the playback environment. A playlist file includes a management region where playback control information relating to a main stream is stored, and includes an extended region. The management region stores first playback control information specifying playing of the video stream of the high-luminance range and the subtitle stream of the high-luminance range in combination. The extended region stores second playback control information specifying playing of the video stream of the standard-luminance range and the subtitle stream of the standard-luminance range in combination.

說(shuō)明書

Also, part of the second playback control information has a data structure that is common with the first playback control information. Accordingly, the player can play a SDR video stream by about the same processing as an HDR video stream.

Also, a VOBI file, indicating attributes relating to the entire BD, is recorded in the BD, as illustrated in FIG. 46. The VOBI file includes TMAP( ) and TMAPExt( ). TMAP( ) and TMAPExt( ) each store random access information, indicating the position within the video stream, of pictures independently decodable that are included in the video stream. A VOBI file is an example of a management information file, TMAP( ) is an example of a map region, and TMAPExt( ) is an example of an extended map region.

TMAP( ) stores first random access information indicating the position in an HDR video stream of pictures independently decodable that are included in the HDR video stream. TMAPExt( ) stores second random access information indicating the position in an SDR video stream of pictures independently decodable that are included in the SDR video stream. The first random access information is an example of first map information and the second random access information is an example of second map information.

When selecting an HDR video stream and performing random access playback or the like, a player that plays BDs of such a configuration can read out the first random access information within the TMAP( ), and selecting an SDR video stream and performing random access playback or the like, can read out the second random access information within the TMAPExt( ). That is to say, according to such a BD, video stream selection processing and playback processing by a player that plays the BD can be facilitated when performing random access playback or the like as well.

權(quán)利要求

1
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