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Recording medium, playback method, and playback device

專利號(hào)
US10867631B2
公開日期
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.

說明書

On the other hand, random access information of the HDR video stream is registered in the TMAP( ). That is to say, random access information indicating positions of independently-decodable pictures included in the HDR video stream (hereinafter also described as first random access information) is stored in the TMAP( ).

Additionally, the SDR video stream, the SDR subtitle stream superimposed thereupon, and audio stream are registered in CombiExt( ). That is to say, second playback control information is stored in the CombiExt( ), in which is instructed playing of the combination of the SDR video stream and SDR subtitle stream.

Random access information of the SDR video stream is registered in the TMAPExt( ). That is to say, random access information indicating positions of independently-decodable pictures included in the SDR video stream (hereinafter also described as second random access information) is stored in the TMAPExt( ).

Next, a case where the two of an HDR video stream and an enhanced video stream (written as EL in FIG. 46) are registered in a single playlist will be described. In this case, the HDR video stream, the HDR subtitle stream superimposed thereupon, 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 registered in the TMAP( ). That is to say, the first random access information and random access information indicating the playback time of pictures included in the enhanced video stream (hereinafter also described as third random access information) are stored in the TMAP( ).

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