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公开(公告)号：US10313743B2
公开(公告)日：2019-06-04
申请号：US15373509
申请日：2016-12-09
Inventor： Masayuki Kozuka , Tadamasa Toma , Kengo Terada , Takahiro Nishi
IPC: H04N21/4363 , H04N7/015 , H04N21/4408 , H04N21/4402 , H04N5/92 , H04N7/167 , H04N21/835 , H04N21/432
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：US10257486B2
公开(公告)日：2019-04-09
申请号：US15596190
申请日：2017-05-16
Inventor： Tadamasa Toma , Masayuki Kozuka , Hiroshi Yahata , Takahiro Nishi , Kengo Terada
Abstract: A method to be performed by a playback device includes determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range, when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video, and when the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video.
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公开(公告)号：US10097786B2
公开(公告)日：2018-10-09
申请号：US15583050
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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公开(公告)号：US09973724B2
公开(公告)日：2018-05-15
申请号：US15583090
申请日：2017-05-01
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/98 , H04N5/57 , G09G5/10 , H04N5/20 , G06F3/14 , H04N5/76 , H04N7/01 , H04N7/015 , H04N9/79 , H04N9/87
CPC classification number: H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , 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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公开(公告)号：US09918019B2
公开(公告)日：2018-03-13
申请号：US15584365
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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Patent Agency Ranking
公开(公告)号：US09762843B2
公开(公告)日：2017-09-12
申请号：US15367222
申请日：2016-12-02
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
CPC classification number: H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , 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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公开(公告)号：US12155855B2
公开(公告)日：2024-11-26
申请号：US17558755
申请日：2021-12-22
Inventor： Satoshi Yoshikawa , Hisao Sasai , Kengo Terada
IPC: H04N11/02 , H04N19/50 , H04N19/176 , H04N19/182 , H04N19/46
Abstract: A decoder includes a memory and a processor coupled to the memory. The processor is configured to obtain first information from a bitstream, the first information indicating a number of first points in a current picture. The processor is also configured to determine second information provided for each of the first points based on the first information, the second information indicating a difference between a coordinate value of a first point and a coordinate value of a corresponding second point, the corresponding second point being included in a reference picture. The processor is further configured to generate a prediction image of a current block by performing an affine prediction according to the determined second information.
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公开(公告)号：US11310507B2
公开(公告)日：2022-04-19
申请号：US16825575
申请日：2020-03-20
Inventor： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi , Kengo Terada
IPC: H04N19/136 , H04N19/85 , H04N19/44 , H04N19/46 , H04N19/70 , H04N21/84 , H04N21/41 , H04N21/43 , H04N21/44 , H04N7/08 , H04N21/4363 , H04N21/462 , H04N21/4402 , H04N21/63 , H04N7/025 , H04N21/436 , H04N21/61 , H04N5/57
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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公开(公告)号：US11297278B2
公开(公告)日：2022-04-05
申请号：US16951346
申请日：2020-11-18
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G06F3/14 , H04N7/01 , H04N7/015 , H04N5/76 , G09G5/10 , H04N5/20 , 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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公开(公告)号：US11228730B2
公开(公告)日：2022-01-18
申请号：US17098725
申请日：2020-11-16
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , 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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