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公开(公告)号：US11196957B2
公开(公告)日：2021-12-07
申请号：US17098732
申请日：2020-11-16
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G06F3/14 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N5/76 , 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：US11153529B2
公开(公告)日：2021-10-19
申请号：US16854200
申请日：2020-04-21
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
IPC: H04N7/01 , G06F3/14 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/64 , H04N21/462 , H04N11/20 , H04N5/235 , H04N5/243 , G06T5/00 , G09G5/02
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：US10972787B2
公开(公告)日：2021-04-06
申请号：US16857419
申请日：2020-04-24
Inventor： Takahiro Nishi , Tadamasa Toma
IPC: H04N21/4402 , G09G5/10 , H04N7/01 , G06T5/00 , H04N21/235 , H04N21/431 , H04N21/435 , G06F3/14 , G09G5/00 , H04N21/2343
Abstract: A transmission method in the present disclosure includes; obtaining an image and image signal characteristics information indicating one of an opto-electrical transfer function (OETF) or an electro-optical transfer function (EOTF) as image signal characteristics of the image; and transmitting a signal including the image and the image signal characteristics information. According to the transmission method in the present disclosure, a receiving device that received a high dynamic range (HDR) image and a standard dynamic range (SDR) image transmitted through broadcasting or the like can display these images appropriately.
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114.发明授权公开(公告)号：US10939105B2
公开(公告)日：2021-03-02
申请号：US16086512
申请日：2017-03-23
Inventor： Chong Soon Lim , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/124 , H04N19/18 , H04N19/46 , H04N19/126 , H04N19/14 , H04N19/159 , H04N19/61 , H04N19/91
Abstract: The encoding method includes: inverse-quantizing one or more first transform coefficients quantized; deriving a quantization parameter based on the one or more first transform coefficients inverse-quantized; and inverse-quantizing a second transform coefficient quantized, based on the derived quantization parameter.
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公开(公告)号：US10791300B2
公开(公告)日：2020-09-29
申请号：US16575633
申请日：2019-09-19
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G06F3/14 , H04N7/01 , G09G5/10 , H04N5/20 , H04N5/76 , 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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Patent Agency Ranking
公开(公告)号：US10728609B2
公开(公告)日：2020-07-28
申请号：US15946307
申请日：2018-04-05
Inventor： Taiho Nakazawa , Noritaka Iguchi , Tadamasa Toma
IPC: H04N21/434 , H04H20/30 , H04H20/40 , H04N21/43 , H04N21/433 , H04N21/438 , H04N21/4385 , H04N21/4402 , H04N21/462 , H04H60/73
Abstract: A receiving device of the present disclosure includes: a first processor that (i) receives a broadcast signal obtained by modulating multiplexed data including at least first multiplexed data in a first multiplexing format, out of the first multiplexed data and second multiplexed data in a second multiplexing format different from the first multiplexing format, (ii) demodulates the broadcast signal received, and (iii) outputs the multiplexed data obtained as a result of the demodulation; and a converter that (i) converts, into the second multiplexing format, a multiplexing format of the first multiplexed data included in the multiplexed data that has been output, and (ii) outputs converted data obtained as a result of the conversion.
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117.发明授权公开(公告)号：US10721497B2
公开(公告)日：2020-07-21
申请号：US15913172
申请日：2018-03-06
Inventor： Takahiro Nishi , Tadamasa Toma
IPC: H04N19/98 , H04N21/434 , H04N19/895 , H04N21/431 , H04N21/845 , H04N21/2362 , H04N21/236 , H04N19/136 , H04N19/44 , H04N19/46
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 video data and audio data; outputting, as first transfer characteristics information, transfer characteristics obtained by demultiplexing the reception signal; outputting, as second transfer characteristics information, transfer characteristics obtained by decoding the video data, the second transfer characteristics information being information for specifying, at frame accuracy, a transfer function corresponding to a luminance dynamic range of the video data; and displaying the video data while controlling a luminance dynamic range of the display at frame accuracy according to the second transfer characteristics information.
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公开(公告)号：US10708565B2
公开(公告)日：2020-07-07
申请号：US16447211
申请日：2019-06-20
Inventor： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi
Abstract: In a converting method relating to picture luminance according to one aspect of the present disclosure, the picture luminance is formed by luminance values in a first luminance range. In this method, a first luminance signal that indicates code values obtained by quantizing the luminance value of the picture is obtained, code values, which are associated with the code values indicated by the obtained first luminance signal by quantization for a second luminance range different in a maximum value from the first luminance range are determined as converted code values, and the first luminance signal is converted into a second luminance signal indicating the converted code values. As a result, the converting method is further improved.
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119.发明授权公开(公告)号：US10681380B2
公开(公告)日：2020-06-09
申请号：US15735427
申请日：2016-03-18
Inventor： Kengo Terada , Takahiro Nishi , Tadamasa Toma , Satoshi Yoshikawa
IPC: H04N19/61 , H04N19/80 , H04N19/109 , H04N19/82 , H04N19/70 , G06T9/00 , H04N19/593 , H04N19/156 , H04N19/17 , H04N19/117 , H04N19/11 , H04N19/51 , H04N19/147 , H04N19/85
Abstract: The image encoding method includes: encoding an image including a block by performing, in at least one of intra prediction, inter prediction, and an in-loop filter, a non-linear process by which the input-output relationship becomes non-linear; and encoding an operation parameter of a non-linear filter to be used in the non-linear process.
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120.发明授权公开(公告)号：US10666891B2
公开(公告)日：2020-05-26
申请号：US16378948
申请日：2019-04-09
Inventor： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi , Kengo Terada
IPC: H04N5/57 , H04N9/68 , H04N5/20 , G09G5/10 , H04N5/765 , H04N21/436 , H04N21/84 , G11B20/10 , G11B27/10 , G11B27/30 , H04N5/775 , H04N7/08 , H04N21/4363 , 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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