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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
发明人： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC分类号： H04N5/57 , G06F3/14 , H04N7/01 , H04N7/015 , H04N5/76 , G09G5/10 , H04N5/20 , H04N9/79 , H04N9/87
摘要： 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：US11228747B2
公开(公告)日：2022-01-18
申请号：US16842250
申请日：2020-04-07
发明人： Takeshi Hirota , Susumu Miyajima , Akira Yoneda , Yoshiichiro Kashiwagi , Toshiroh Nishio , Masayuki Kozuka
摘要： A video display device includes: a video receiver that receives video data including a video and dynamic luminance characteristics indicating a time-dependent change in luminance characteristics of the video; a tone mapping processor that, in the case where a luminance region having a luminance less than or equal to a first luminance is defined as a low luminance region, and a luminance region having a luminance exceeding the first luminance is defined as a high luminance region, (i) performs first tone mapping using first conversion characteristics when first luminance characteristics exceed a predetermined threshold value, and (ii) performs second tone mapping using second conversion characteristics when the first luminance characteristics are less than or equal to the predetermined threshold 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
发明人： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC分类号： H04N5/57 , G06F3/14 , H04N5/76 , H04N7/01 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/79 , H04N9/87
摘要： 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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24.发明授权公开(公告)号：US11184596B2
公开(公告)日：2021-11-23
申请号：US16317081
申请日：2017-07-25
发明人： Yasushi Uesaka , Masayuki Kozuka , Yoshihiro Mori , Toshiyuki Fukushima , Kazuhiko Kouno , Yoshiichiro Kashiwagi , Shigeo Sakaue
摘要： An image processing device includes an acquisition section configured to acquire still image data obtained by imaging, a generator configured to generate, from the still image data acquired by the acquisition section, a logically single data unit including first still image data and second still image data different from each other in luminance dynamic range and reproducible independently from each other, and an output section configured to output the data unit generated by the generator.
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公开(公告)号：US11153466B2
公开(公告)日：2021-10-19
申请号：US16331464
申请日：2018-02-26
发明人： Masaya Yamamoto , Masayuki Kozuka , Yoshiichiro Kashiwagi , Toshiroh Nishio , Kazuhiko Kouno , Hiroshi Yahata , Takeshi Hirota , Yoshihiro Mori
IPC分类号： G06T5/00 , G06T5/20 , H04N9/793 , H04N5/20 , H04N5/445 , H04N21/431 , H04N21/4402 , H04N9/82 , H04N5/66 , H04N21/47
摘要： A video display apparatus includes: a tone mapping processor that performs a tone mapping process of converting a luminance of a video by using conversion characteristics according to a maximum luminance of the video; and a display that displays the video that has undergone the tone mapping process. The tone mapping processor switches between a first tone mapping process of dynamically changing the conversion characteristics according to a time-dependent change in the maximum luminance of the video and a second tone mapping process that is performed using constant conversion characteristics irrespective of the time-dependent change in the maximum luminance of the video.
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公开(公告)号：US11115917B2
公开(公告)日：2021-09-07
申请号：US16638723
申请日：2019-02-27
发明人： Tomoki Ogawa , Mitsuki Yamada , Masayuki Kozuka , Kunio Gobara , Yoshishige Yoshikawa , Shinya Nakai , Junya Suzuki
IPC分类号： G06F3/0481 , H04W48/18 , H04B17/23 , H04W76/10 , H04W48/16 , H04W88/06 , H04W4/70 , H04L12/28
摘要： A device includes: N communication modules, a selector that selects one communication module, an obtainer that obtains a reception strength of a signal, a generator that generates an image that includes 2N display regions associated with the N communication modules in order of communication speed from slower to faster per two display regions counted from a reference position along one direction, and a display. The generator generates, as the image, an image displaying (i) a graphic of a first type in, among the two display regions associated with the one communication module, more display regions counted from proximity to the reference position along the one direction, with an increase in the reception strength of the one communication module, and (ii) the graphic of the first type in each of two display regions associated with a communication module that communicates at a slower speed than the one communication module.
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公开(公告)号：US10687014B2
公开(公告)日：2020-06-16
申请号：US16575701
申请日：2019-09-19
发明人： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC分类号： H04N5/57 , H04N7/01 , H04N7/015 , H04N9/79 , H04N9/87 , H04N5/76 , G09G5/10 , H04N5/20 , G06F3/14
摘要： 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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28.发明授权公开(公告)号：US10567727B2
公开(公告)日：2020-02-18
申请号：US16335012
申请日：2017-09-25
发明人： Toshiyuki Fukushima , Yasushi Uesaka , Atsushi Ito , Kiyoaki Watanabe , Toshiya Noritake , Kazuhiko Kouno , Yoshiichiro Kashiwagi , Masayuki Kozuka , Yoshihiro Mori
摘要： A reproducing method includes: an obtaining step of obtaining a high quality image and a first low quality image that are still images showing an identical scene, and conversion determination information; a first determining step of determining whether or not the display device can display the high quality image; a first reproducing step of reproducing the high quality image when the display device can display the high quality image; a second determining step of determining whether or not to generate a second low quality image by using the conversion determination information when the display device cannot display the high quality image; a second reproducing step of reproducing the first low quality image when it is determined not to generate the second low quality image; and a third reproducing step of generating the second low quality image from the high quality image and reproducing the second low quality image when it is determined to generate the second low quality image.
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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
发明人： Masayuki Kozuka , Takahiro Nishi , Kengo Terada , Tadamasa Toma
IPC分类号： 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
摘要： 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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30.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
发明人： Tadamasa Toma , Masayuki Kozuka , Takahiro Nishi , Kengo Terada
IPC分类号： H04N21/436 , H04N5/57 , H04N5/765 , H04N21/84 , H04N9/68 , H04N5/20 , G09G5/10 , H04N5/775 , H04N7/08 , H04N21/4363 , G11B20/10 , G09G5/00
摘要： 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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