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41.发明授权公开(公告)号：US10560999B2
公开(公告)日：2020-02-11
申请号：US16557314
申请日：2019-08-30
Inventor： Virginie Drugeon , Takahiro Nishi , Tadamasa Toma
IPC: H04N9/80 , H05B37/02 , H05B33/08 , H04N21/236 , H02M1/14 , H02M1/084 , H04N19/70 , H04N21/2343 , H04N19/98 , H04N19/85 , H04N21/434 , H04N21/4402 , H04N7/01 , H02M1/00
Abstract: A data generation method is for generating video data that covers a second luminance dynamic range wider than a first luminance dynamic range and has reproduction compatibility with a first device that does not support reproduction of video having the second luminance dynamic range and supports reproduction of video having the first luminance dynamic range, and includes: generating a video signal to be included in the video data using a second OETF; storing, into VUI in the video data, first transfer function information for identifying a first OETF to be referred to by the first device when the first device decodes the video data; and storing, into SEI in the video data, second transfer function information for identifying a second OETF to be referred to by a second device supporting reproduction of video having the second luminance dynamic range when the second device decodes the video data.
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42.发明授权公开(公告)号：US10375436B2
公开(公告)日：2019-08-06
申请号：US15430675
申请日：2017-02-13
Inventor： Noritaka Iguchi , Tadamasa Toma
IPC: H04W72/04 , H04N21/434 , H04N21/43 , H04N21/643
Abstract: A reception apparatus including a decoding apparatus and a demultiplexing apparatus for identifying a packet with clock information. The decoding apparatus receives a transfer frame, which stores second transfer units containing one or more first transfer units obtained by multiplexing contents. A decoder in the decoding apparatus acquires the first transfer units by decoding the transfer frame, and outputs the first transfer units to the demultiplexing apparatus. The demultiplexing apparatus acquires content by demultiplexing the first transfer units. Additionally, a heading first transfer unit positioned at a head within a heading second transfer unit, which is positioned at a head within the transfer frame, contains reference clock information. The decoder generates information for identifying the heading first transfer unit and outputs the information to the demultiplexing apparatus.
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公开(公告)号：US10306197B2
公开(公告)日：2019-05-28
申请号：US15610991
申请日：2017-06-01
Inventor： Masayuki Kozuka , Takahiro Nishi , Kengo Terada , Tadamasa Toma
IPC: H04N9/64 , G09G5/00 , G09G5/10 , H04N21/431 , H04N9/87 , H04N11/24 , H04N21/234 , G06T5/00 , H04N21/435 , H04N21/45 , G11B27/00 , H04N5/202 , H04N21/4363 , H04N21/4402
Abstract: In a reproduction method, a first video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than 100 nits, and a display apparatus displays video in a second dynamic range narrower than the first dynamic range. The method determines whether the first video stream is quantized based on a hybrid OETF. When it is determined that the first video stream is quantized based on the hybrid OETF, the first video stream is reproduced. When it is determined that the first video stream is not quantized based on the hybrid OETF, a luminance dynamic range of the first video stream is converted from the first dynamic range to the second dynamic range to obtain a second video stream, and the second video stream is reproduced.
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44.发明授权公开(公告)号：US10306175B2
公开(公告)日：2019-05-28
申请号：US15383209
申请日：2016-12-19
Inventor： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi , Kengo Terada
IPC: H04N21/436 , H04N5/57 , H04N5/765 , H04N21/84 , H04N9/68 , H04N5/20 , G09G5/10 , H04N5/775 , H04N7/08 , H04N21/4363 , G11B20/10 , G09G5/00
Abstract: An apparatus according to one aspect of the present disclosure includes: one or more memories, and circuitry which, in operation; decodes a video stream to generate a first video signal with a first luminance range; acquires characteristic data indicating the luminance range of the first video signal; converts the characteristic data into control information according to a predetermined transmission protocol; and outputs the control information in accordance with the predetermined transmission protocol.
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公开(公告)号：US10171812B2
公开(公告)日：2019-01-01
申请号：US15006820
申请日：2016-01-26
Inventor： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi , Kengo Terada
IPC: H04N19/136 , H04N19/44 , H04N19/46 , H04N19/70 , H04N7/08 , H04N19/85 , H04N21/84 , H04N5/57 , H04N21/4402 , H04N7/025 , H04N21/462 , H04N21/63 , H04N21/41 , H04N21/4363 , H04N21/436 , H04N21/61
Abstract: A data output apparatus includes: a video decoder that decodes a video stream to generate a first video signal; an external metadata acquisition unit that acquires one or more pieces of metadata corresponding to one or more first conversion modes; an HDR metadata interpreter that interprets one of the one or more pieces of metadata to acquire characteristic data and conversion auxiliary data; a DR converter that supports one or more second conversion modes and performs conversion processing of a luminance range of the first video signal based on the conversion auxiliary data to generate a second video signal; and an HDMI output unit that outputs the second video signal to a display apparatus.
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Patent Agency Ranking
公开(公告)号：US10136181B2
公开(公告)日：2018-11-20
申请号：US15593478
申请日：2017-05-12
Inventor： Masayuki Kozuka , Tadamasa Toma , Kengo Terada , Takahiro Nishi
IPC: H04N5/775 , H04N5/765 , H04N9/80 , H04N21/4363 , H04N5/92 , H04N7/167 , H04N21/835 , H04N21/432 , H04N21/4402 , H04N21/4408 , H04N7/015
Abstract: A playback method according to one aspect of the present disclosure is performed by a playback device connected to a display device. The playback method includes obtaining a type of the display device; selecting each of a version of High-Definition Multimedia Interface (HDMI) and a version of High-bandwidth Digital Content Protection (HDCP), according to the obtained type of the display device; obtaining a video signal of content recorded on a recording medium; decoding the obtained video signal; encrypting the decoded video signal using the selected version of HDCP; and outputting the encrypted video signal to the display device using the selected version of HDMI.
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公开(公告)号：US10033958B2
公开(公告)日：2018-07-24
申请号：US15583071
申请日：2017-05-01
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G09G5/10 , H04N5/20 , G06F3/14 , H04N5/76 , H04N7/01 , H04N7/015 , H04N9/79 , H04N9/87
Abstract: A display system includes a conversion apparatus converting video luminance including a luminance value in a first luminance range and a display apparatus connected thereto and displaying the video. The conversion apparatus includes a first acquisition unit, a first luminance converter, a second luminance converter, a quantization converter, and an output unit outputting a third luminance signal to the display apparatus. The display apparatus includes: a second acquisition unit acquiring the third luminance signal and setting information indicating display settings recommended to the display apparatus in display of the video; a display setting unit setting the display apparatus, using the setting information; a third luminance converter converting a third code value indicated by the third luminance signal into a second luminance value compatible with a second luminance range, using the setting information; and a display controller displaying the video on the display apparatus based on the second luminance value.
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48.发明申请公开(公告)号：US20180197505A1
公开(公告)日：2018-07-12
申请号：US15917008
申请日：2018-03-09
Inventor： Tadamasa Toma , Takahiro Nishi , Noritaka Iguchi
IPC: G09G5/10 , H04N21/431 , H04N21/435 , H04N5/20
CPC classification number: G09G5/10 , G06F3/14 , G09G3/3406 , G09G3/36 , G09G2320/0276 , G09G2320/0613 , G09G2320/0673 , G09G2340/02 , G09G2340/0407 , G09G2340/0428 , G09G2370/04 , H04N5/20 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/85 , H04N21/235 , H04N21/2353 , H04N21/431 , H04N21/4318 , H04N21/435
Abstract: Provided is a video reception method performed by a video reception apparatus including a display. The video reception method includes: receiving a reception signal multiplexed from a video signal and an audio signal; obtaining the video signal and first transfer characteristics information by demultiplexing the reception signal, the first transfer characteristics information being information for specifying, per random access unit, a transfer function corresponding to a luminance dynamic range of the video signal; obtaining video data by decoding the video signal obtained; and displaying the video data while controlling a luminance dynamic range of the display per random access unit according to the first transfer characteristics information.
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公开(公告)号：US09924146B2
公开(公告)日：2018-03-20
申请号：US15584335
申请日：2017-05-02
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
CPC classification number: H04N7/0125 , G06F3/14 , G06T5/009 , G09G5/026 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/2351 , H04N5/243 , H04N7/01 , H04N7/015 , H04N9/64 , H04N9/642 , H04N11/20 , H04N21/4621
Abstract: A conversion method for converting luminance of a video, including a luminance value in a first luminance range, to be displayed on a display apparatus includes: acquiring a first luminance signal indicating a code value obtained by quantization of the luminance value of the video; and converting the code value indicated by the acquired first luminance signal into a second luminance value determined based on a luminance range of the display apparatus, the second luminance value being compatible with a second luminance range with a maximum value smaller than a maximum value of the first luminance range and larger than 100 nit. This provides the conversion method capable of achieving further improvement.
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公开(公告)号：US09818446B2
公开(公告)日：2017-11-14
申请号：US15003745
申请日：2016-01-21
Inventor： Tadamasa Toma , Tomoki Ogawa , Hiroshi Yahata , Masayuki Kozuka , Kaoru Murase , Masaya Yamamoto
IPC: H04N5/917 , G11B20/12 , H04N5/85 , H04N21/4402 , H04N21/432 , H04N9/82 , H04N21/482 , G11B27/30 , G11B27/32 , G11B20/10 , G11B27/031 , H04N9/804 , H04N9/806 , H04N21/236 , H04N21/262 , H04N21/84 , H04N21/854
CPC classification number: G11B20/1217 , G11B20/10 , G11B27/031 , G11B27/3036 , G11B27/329 , H04N5/85 , H04N9/8042 , H04N9/806 , H04N9/8205 , H04N9/8211 , H04N9/8233 , H04N21/236 , H04N21/26258 , H04N21/4325 , H04N21/4402 , H04N21/4825 , H04N21/84 , H04N21/85406
Abstract: A method according to one aspect of the present disclosure includes the steps of: acquiring a play list including identification information indicating each of a plurality of elementary streams; selecting an elementary stream indicated by predetermined identification information from the acquired play list; acquiring a difference file including data that is not included in the selected elementary stream; and converting the selected elementary stream into an MP4 file format by combining data included in the difference file and data included in the selected elementary stream based on a manifest file corresponding to the selected elementary stream, the manifest file being necessary for the conversion of a file format based on a predetermined rule.
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