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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：US11145311B2
公开(公告)日：2021-10-12
申请号：US16325793
申请日：2018-02-02
Inventor： Masayuki Kozuka , Tomoki Ogawa , Yoshihiro Mori
Abstract: An information processing apparatus includes: a speech obtainer which obtains speech of a user; a first controller which, when the first controller recognizes that the speech obtained by the speech obtainer is a first activation word, outputs a speech signal corresponding to a second activation word different from the first activation word; and a second controller which performs an activation process for starting transmission of the speech signal of the speech obtained by the speech obtainer to a VPA cloud server when the second controller recognizes that the speech signal output by the first controller indicates the second activation word.
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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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公开(公告)号：US10742945B2
公开(公告)日：2020-08-11
申请号：US16349931
申请日：2018-02-26
Inventor： Takeshi Hirota , Susumu Miyajima , Akira Yoneda , Yoshiichiro Kashiwagi , Toshiroh Nishio , Masayuki Kozuka
Abstract: A luminance characteristics generation method includes: determining, for each of frames included in a video, a value as first luminance characteristics, the value being obtained by dividing the number of pixels having luminances less than or equal to a first luminance among all pixels included in the frame by the number of all the pixels included in the frame; and outputting the first luminance characteristics determined in the determining of the value.
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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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Patent Agency Ranking
86.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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公开(公告)号：US10659745B2
公开(公告)日：2020-05-19
申请号：US16349923
申请日：2018-02-26
Inventor： Takeshi Hirota , Susumu Miyajima , Akira Yoneda , Yoshiichiro Kashiwagi , Toshiroh Nishio , Masayuki Kozuka
Abstract: A video display device includes: a video receiver that obtains 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：US10582177B2
公开(公告)日：2020-03-03
申请号：US16282687
申请日：2019-02-22
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：US10455189B2
公开(公告)日：2019-10-22
申请号：US16367667
申请日：2019-03-28
Inventor： Masayuki Kozuka , Kaoru Murase , Masaya Yamamoto
IPC: H04N9/80 , G11B27/00 , H04N5/913 , H04N21/432 , H04N21/835 , H04N21/4402 , G11B20/00 , H04N9/804 , H04N9/82 , H04N5/93 , H04N5/85
Abstract: A playback method according to one aspect of the present disclosure is performed by a Blu-ray device connected to a display device. The playback method includes obtaining, from a recording medium, output control information of content recorded on the recording medium; obtaining, from the recording medium, a video signal of the content recorded on the recording medium; and (a) outputting the obtained video signal to the display device without converting image quality of the video signal, when the obtained output control information does not restrict output of content using a first copyright protection technology, and (b) converting the image quality of the obtained video signal and outputting the video signal to the display device, when the obtained output control information restricts output of content using the first copyright protection technology and output using the first copyright protection technology is performed according to a type of the display device.
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公开(公告)号：US10440425B2
公开(公告)日：2019-10-08
申请号：US15596055
申请日：2017-05-16
Inventor： Masayuki Kozuka , Tadamasa Toma , Kengo Terada , Takahiro Nishi
IPC: H04N21/4363 , H04N7/015 , H04N21/4408 , H04N21/4402 , H04N21/432 , H04N21/835 , H04N7/167 , H04N5/92
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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