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公开(公告)号：US20170372750A1
公开(公告)日：2017-12-28
申请号：US15698750
申请日：2017-09-08
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: A playback device and playback method are provided for reading out and playing content from a recording medium in which are recorded a video stream that is encoded video information, map information, and bitrate information of the video stream. The map information includes playback start time information, start position information, and size information. The playback method includes reading out the map information and the bitrate information, and determining the stipulated data size in accordance with the bitrate information. The playback method also includes acquiring the picture from the video stream based on the result of the determination, and the start position information and the size information included in the map information that has been read out. The method further includes decoding and playing the acquired picture, wherein the stipulated data size differs between 2K resolution of the video stream and 4K resolution of the video stream.
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公开(公告)号：US20170372747A1
公开(公告)日：2017-12-28
申请号：US15699091
申请日：2017-09-08
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: 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.
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公开(公告)号：US20170352384A1
公开(公告)日：2017-12-07
申请号：US15683053
申请日：2017-08-22
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: At least one video stream that is encoded video information, and a management information file indicating attributes relating to the entire recording medium, are recorded in a recording medium. The management information file includes attribute information indicating whether the dynamic range of luminance of an initial video stream, which is played first out of the at least one video stream when the recording medium is inserted into a playback device, is a first dynamic range, or a second dynamic range that is broader than the first dynamic range.
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公开(公告)号：US20170352382A1
公开(公告)日：2017-12-07
申请号：US15683006
申请日：2017-08-22
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: At least one video stream that is encoded video information, and a management information file indicating attributes relating to the entire recording medium, are recorded in a recording medium. The management information file includes attribute information indicating whether the dynamic range of luminance of an initial video stream, which is played first out of the at least one video stream when the recording medium is inserted into a playback device, is a first dynamic range, or a second dynamic range that is broader than the first dynamic range.
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公开(公告)号：US20190139573A1
公开(公告)日：2019-05-09
申请号：US16240283
申请日：2019-01-04
Inventor： Hiroshi YAHATA
IPC: G11B20/00 , H04N21/845 , H04N21/432 , H04N21/4405 , H04N5/85 , H04N5/913
Abstract: A playback method using a playback device that plays a system stream file is provided. The playback device includes an individual decryption key that is owned individually by each of playback devices, and a common decryption key that is owned in common by a plurality of playback devices. The system stream file includes a first system stream file configured to be played back using both the individual decryption key and the common decryption key, and a second system stream file configured to be played back using only the common decryption key among the individual decryption key and the common decryption key. The method includes identifying whether the system stream file to be playback is the first system stream file or the second system stream file, in accordance with a file extension of the system stream file, and selecting a decryption process of the system stream file.
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Patent Agency Ranking
公开(公告)号：US20180012628A1
公开(公告)日：2018-01-11
申请号：US15699105
申请日：2017-09-08
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: 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.
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公开(公告)号：US20170372752A1
公开(公告)日：2017-12-28
申请号：US15698779
申请日：2017-09-08
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: A playback device is provided that reads out and plays content from a recording medium, in which are recorded a video stream that is encoded video information, map information, and bitrate information of the video stream. The map information includes playback start time information, start position information, and size information. The playback device includes a readout unit that reads out the map information and the bitrate information, a determining unit that determines the stipulated data size indicated by the size information included in the map information, an acquisition unit that acquires the picture from the video stream based on the result of the determination, and a video playback unit that decodes and plays the acquired picture.
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公开(公告)号：US20170352385A1
公开(公告)日：2017-12-07
申请号：US15683069
申请日：2017-08-22
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: At least one video stream that is encoded video information, and a management information file indicating attributes relating to the entire recording medium, are recorded in a recording medium. The management information file includes attribute information indicating whether the dynamic range of luminance of an initial video stream, which is played first out of the at least one video stream when the recording medium is inserted into a playback device, is a first dynamic range, or a second dynamic range that is broader than the first dynamic range.
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公开(公告)号：US20170352381A1
公开(公告)日：2017-12-07
申请号：US15682992
申请日：2017-08-22
Inventor： Hiroshi YAHATA , Tadamasa TOMA
Abstract: At least one video stream that is encoded video information, and a management information file indicating attributes relating to the entire recording medium, are recorded in a recording medium. The management information file includes attribute information indicating whether the dynamic range of luminance of an initial video stream, which is played first out of the at least one video stream when the recording medium is inserted into a playback device, is a first dynamic range, or a second dynamic range that is broader than the first dynamic range.
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公开(公告)号：US20220115045A1
公开(公告)日：2022-04-14
申请号：US17556241
申请日：2021-12-20
Inventor： Hiroshi YAHATA , Tadamasa TOMA , Tomoki OGAWA
IPC: G11B27/28 , G11B20/10 , H04N5/84 , H04N9/804 , H04N9/82 , G11B27/10 , G11B27/32 , H04N5/85 , H04N7/015
Abstract: A decoding method of a video stream, which is encoded video information. The video stream includes a base video stream, and an enhanced video stream, which is a video stream to enhance luminance of the base video stream, and a describer that contains the combination information of the base video stream and the enhanced video stream. The decoding method includes acquiring the describer, and identifying the combination of the base video steam and the enhanced video stream. The decoding method also includes generating base video information by decoding the base video stream, generating enhanced video information by decoding the enhanced video stream, generating decoded video information based on the base video stream and the enhanced video stream, and outputting the decoded video information.
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