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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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公开(公告)号：US09736419B2
公开(公告)日：2017-08-15
申请号：US15075228
申请日：2016-03-21
Inventor： Masayuki Kozuka , Tadamasa Toma , Kengo Terada , Takahiro Nishi
CPC classification number: H04N5/57 , G06F3/14 , G09G2360/16 , G09G2370/022 , G09G2370/04 , H04N5/20
Abstract: In a converting method for converting luminance of an input video in order to display the video on a display device, the luminance of the video is a first luminance value in a first luminance range where a maximum luminance value is defined as a first maximum luminance value that exceeds 100 nit. The method includes acquiring a first luminance signal indicating a first luminance value of the video, selecting a luminance converting process to be executed from among a plurality of luminance converting processes based on a reference luminance value corresponding to reference reflectance included in first meta data of the acquired first luminance signal, converting the first luminance value indicated by the acquired first luminance signal into a second luminance value in a second luminance range where a maximum luminance value is defined as a second maximum luminance value that is smaller than the first maximum luminance value and larger than 100 nit based on the selected luminance converting process.
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公开(公告)号：US12206938B2
公开(公告)日：2025-01-21
申请号：US18527688
申请日：2023-12-04
Inventor： Takahiro Nishi , Tadamasa Toma
IPC: H04N21/4402 , G06F3/14 , G06T5/92 , G09G5/00 , G09G5/10 , H04N7/01 , H04N21/2343 , H04N21/235 , H04N21/431 , H04N21/435
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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公开(公告)号：US12143430B2
公开(公告)日：2024-11-12
申请号：US18221983
申请日：2023-07-14
Inventor： Noritaka Iguchi , Tadamasa Toma
IPC: H04L65/70 , H04H60/07 , H04L65/75 , H04L101/668 , H04N21/2381 , H04N21/643 , H04N21/854
Abstract: A transmission method includes: generating a stream including a plurality of Internet Protocol (IP) data flows corresponding one-to-one with a plurality of services in broadcast, the IP data flows storing the corresponding services of the plurality of services; and transmitting the generated stream in a predetermined channel.
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Patent Agency Ranking
56.发明公开公开(公告)号：US20240340460A1
公开(公告)日：2024-10-10
申请号：US18748825
申请日：2024-06-20
Inventor： Virginie Drugeon , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/70 , H02M1/00 , H02M1/084 , H02M1/14 , H04N7/01 , H04N19/85 , H04N19/98 , H04N21/2343 , H04N21/236 , H04N21/434 , H04N21/4402 , H05B45/37 , H05B47/10 , H05B47/11 , H05B47/19
CPC classification number: H04N19/70 , H02M1/084 , H02M1/14 , H04N7/0117 , H04N19/85 , H04N19/98 , H04N21/2343 , H04N21/236 , H04N21/23614 , H04N21/4345 , H04N21/4402 , H05B45/37 , H05B47/10 , H05B47/11 , H05B47/19 , H02M1/0009
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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57.发明公开公开(公告)号：US20240276035A1
公开(公告)日：2024-08-15
申请号：US18647179
申请日：2024-04-26
Inventor： Tadamasa Toma , Takahiro Nishi , Noritaka Iguchi
IPC: H04N21/2343 , G06T5/90 , H04N19/30 , H04N19/89 , H04N21/234 , H04N21/236 , H04N21/434 , H04N21/4402 , H04N21/485
CPC classification number: H04N21/2343 , G06T5/90 , H04N19/30 , H04N19/89 , H04N21/23418 , H04N21/23614 , H04N21/4348 , H04N21/4402 , H04N21/4854 , G06T2207/20208
Abstract: A video transmission method according to the present disclosure includes: generating a transmission signal including, in a time series, first video data having a first luminance dynamic range and second video data having a second luminance dynamic range wider than the first luminance dynamic range; and transmitting the transmission signal generated. In the generating of the transmission signal, a signal level corresponding to a luminance value is limited to a value lower than a limit value that is predetermined, in a transition period provided for switching from one of the first video data and the second video data to the other.
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公开(公告)号：US11974070B2
公开(公告)日：2024-04-30
申请号：US18100114
申请日：2023-01-23
Inventor： Tadamasa Toma , Kengo Terada , Masayuki Kozuka , Takahiro Nishi
IPC: H04N7/01 , G06F3/14 , G06T5/92 , G09G5/02 , G09G5/10 , H04N5/20 , H04N7/015 , H04N9/64 , H04N11/20 , H04N21/462 , H04N23/71 , H04N23/76
CPC classification number: H04N7/0125 , G06F3/14 , G06T5/92 , G09G5/026 , G09G5/10 , H04N5/20 , H04N7/01 , H04N7/015 , H04N9/64 , H04N9/642 , H04N11/20 , H04N21/4621 , H04N23/71 , H04N23/76 , G09G2320/0276 , G09G2370/04
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：US11812191B2
公开(公告)日：2023-11-07
申请号：US17682139
申请日：2022-02-28
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
CPC classification number: H04N5/57 , G06F3/14 , G09G5/10 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/015 , H04N7/0125 , H04N9/7925 , H04N9/87 , G09G2320/0276 , G09G2370/04
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：US11797630B2
公开(公告)日：2023-10-24
申请号：US17468741
申请日：2021-09-08
Inventor： Hiroshi Yahata , Takahiro Nishi , Tadamasa Toma , Toshiyasu Sugio , Christopher John Wright , Bernadette Elliott Bowman , David Michael Duffy
IPC: G06F16/9537 , H04W4/021 , G06F16/2457 , G06F16/9535 , G06Q50/12 , H04W4/35 , G06F16/9538
CPC classification number: G06F16/9537 , G06F16/24578 , G06F16/9535 , G06F16/9538 , G06Q50/12 , H04W4/021 , H04W4/35
Abstract: The management server obtains address information indicating a user's address and evaluation information indicating evaluation of a food or a restaurant performed by the user. A food search screen is provided with, as one of search filters, a search filter for filtering foods or restaurants on the basis of results of evaluation of foods or restaurants performed by residents of a certain area. If the user's address indicated by the address information is included in the certain area, the evaluation information indicating the evaluation of the food or the restaurant performed by the user is included in the results of the evaluation of the foods or the restaurants performed by the residents of the certain area.
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