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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
技術領域
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

Now, VOB_type=0x10 (Sub TS for Enh. Layer Video) is only used for the playback mode of this SubPL_type=0x0A (Synchronous Enhancement Layer Video SubPL in Sub TS).

FIG. 44 is a diagram for describing the meaning of each of the fields in management information in a case where SubPL_type=0x0B. In the SubPL_type=0x0B playback model, the HDR video stream (HDRb) and the enhanced video stream thereof are multiplexed in one system stream file (MPEG-2 TS), and these streams are played at the same time. Thus, in the SubPL_type=0x0B playback model, the base video stream and enhanced video stream are multiplexed in the same transport stream. Accordingly, the base video stream and enhanced video stream can be clearly correlated, and video information having a wide dynamic range can be played in an appropriate manner.

Playback section from Cell #0.In to Cell #0.Out in the HDR video stream (HDRb) is played as the playback section specified in Cell #0. Synchronously with this playback, the continuous section from SubCell #0.In to SubCell #0.Out in the enhanced video stream is played as the continuous section specified in SubCell #0. Accordingly, high-luminance video information that has higher luminance and higher quantization precision than the HDR video stream (HDRb) decoded at the base decoder 401 illustrated in FIG. 45, which will be described later, is output.

Thus, in the SubPL_type=0x0B playback model, two video streams are multiplexed in the same system stream file (Main TS that is MPEG-2 TS), and are played synchronously. Accordingly, Cell #0.In and SubCell #0.In are the same, and Cell #0.Out and SubCell #0.Out are the same.

權利要求

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