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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

Further, playback control information of the enhanced video stream is registered in SubPL( ). That is to say, third playback control information specifying an enhanced video stream to enhance the luminance range of the HDR video steam, is stored in the SubPL( ). This is the pattern described with reference to FIGS. 43 and 44.

Next, a case where the three of an HDR video stream, a luminance-enhanced video stream, and an SDR video stream are registered in a single playlist will be described. In this case, the HDR video stream, the HDR subtitle stream to be superimposed thereon, and audio stream are registered in Combi( ). Random access information of the HDR video stream and random access information of the enhanced video stream are stored in the TMAP( ).

Further, playback control information of the enhanced video stream is registered in SubPL( ). Additionally, the SDR video stream, the SDR subtitle stream to be superimposed thereon, and audio stream are registered in the CombiExt( ). Random access information of the SDR video stream is registered in TMAPExt( ).

Next, a case where the two of an SDR video stream and an enhanced video stream are registered in a single playlist will be described. In this case, the SDR video stream, the SDR subtitle stream superimposed thereupon, and audio stream are registered in Combi( ). Random access information of the SDR video stream and random access information of the enhanced video stream are registered in the TMAP( ). Further, playback control information of the enhanced video stream is registered in SubPL( ). Note however, that this case is only applied in a case where the SDR video stream can be converted to high-luminance/high-bit-precision HDR video using the enhanced video stream.

權(quán)利要求

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