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Recording medium, playback method, and playback device

專利號
US10867631B2
公開日期
2020-12-15
申請人
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.

說明書

Also, the above BD further has recorded therein a sub-playlist file (SubPL( ) in FIG. 46), in which is recorded playback control information relating to sub-streams played at the same time as the main stream file. Third playback control information relating to enhanced video streams for enhancing the luminance range of HDR video streams is stored in the sub-playlist file. First random access information, and third random access information indicating the position within the enhanced stream of pictures independently decodable that are included in the enhanced video stream, are stored in TMAP( ). The third random access information is an example of third map information.

A player that plays BDs of such a configuration can play the HDR video stream and enhanced video stream at the same time, by reading out the first playback control information within the Combi( ) and the third playback control information within the SubPL( ). Accordingly, such a BD facilitates HDR video stream enhancing processing of a player that plays the BD.

Also, when performing random access playback or the like, the player can further read out information within the TMAP( ). That is to say, such a BD facilitates playback processing of a player playing the BD, in a case of enhancing an HDR video stream and performing random access playback and so forth.

權(quán)利要求

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