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公开(公告)号：US20200007912A1
公开(公告)日：2020-01-02
申请号：US16568630
申请日：2019-09-12
Inventor： Noritaka IGUCHI , Tadamasa TOMA
IPC: H04N21/236 , H04N21/2343 , H04N21/44 , H04L29/06
Abstract: A transmitting method includes: inputting, per unit time, a plurality of transfer packets less than or equal to a predetermined number; and transmitting, per the unit time, the plurality of transfer packets that have been input, in a state where definitions compliant with a receiving buffer model are satisfied. Each of the plurality of transfer packets includes a variable-length packet header and a variable-length payload. The definitions compliant with the receiving buffer model are predetermined for guaranteeing a buffering operation of a receiving device, and specify converting a first packet into a second packet and outputting the second packet from a buffer of the receiving device at a predetermined extraction rate. The first packet is included in the transfer packets received and includes a variable-length packet header and a variable-length payload. The second packet has a fixed-length packet header that is extended.
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42.发明申请公开(公告)号：US20190306560A1
公开(公告)日：2019-10-03
申请号：US16442809
申请日：2019-06-17
Inventor： Noritaka IGUCHI , Tadamasa TOMA
IPC: H04N21/434 , H04N21/43
Abstract: A reception apparatus including a decoding apparatus and a demultiplexing apparatus for identifying a packet with clock information. The decoding apparatus receives a transfer frame, which includes one or more first transfer units obtained by multiplexing contents. A decoder in the decoding apparatus acquires the first transfer units by decoding the transfer frame, and outputs the first transfer units to the demultiplexing apparatus. The demultiplexing apparatus acquires content by demultiplexing the first transfer units. Additionally, a heading first transfer unit, which is positioned at a head within the transfer frame, contains reference clock information. The decoder generates information for identifying the heading first transfer unit and outputs the information to the demultiplexing apparatus.
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43.发明申请公开(公告)号：US20190261489A1
公开(公告)日：2019-08-22
申请号：US16401830
申请日：2019-05-02
Inventor： Virginie DRUGEON , Takahiro NISHI , Tadamasa TOMA
IPC: H05B37/02 , H05B33/08 , H04N21/236 , H02M1/14 , H02M1/084 , H04N19/70 , H04N21/4402 , H04N7/01 , H04N21/2343 , H04N19/98 , H04N19/85 , H04N21/434
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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公开(公告)号：US20190191140A1
公开(公告)日：2019-06-20
申请号：US16282687
申请日：2019-02-22
Inventor： Tadamasa TOMA , Masayuki KOZUKA , Hiroshi YAHATA , Takahiro NISHI , Kengo TERADA
CPC classification number: H04N9/8715 , G06F3/14 , G11B20/10 , H04N7/0125 , H04N7/015 , H04N9/642 , H04N9/87 , H04N11/24 , H04N21/431
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：US20180310052A1
公开(公告)日：2018-10-25
申请号：US16025156
申请日：2018-07-02
Inventor： Takahiro NISHI , Tadamasa TOMA
IPC: H04N21/4402 , H04N21/435 , H04N21/431 , G06T5/00 , G09G5/10 , H04N7/01 , H04N21/2343 , H04N21/235 , G06F3/14 , G09G5/00
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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Patent Agency Ranking
公开(公告)号：US20180227561A1
公开(公告)日：2018-08-09
申请号：US15943052
申请日：2018-04-02
Inventor： Tadamasa TOMA , Masayuki KOZUKA , Takahiro NISHI
CPC classification number: H04N9/77 , G09G5/003 , G09G5/10 , G09G2320/0271 , G09G2340/06 , G09G2360/16 , G09G2370/12 , H04N5/20 , H04N5/202 , H04N5/2355 , H04N9/68
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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47.发明申请公开(公告)号：US20180184123A1
公开(公告)日：2018-06-28
申请号：US15735427
申请日：2016-03-18
Inventor： Kengo TERADA , Takahiro NISHI , Tadamasa TOMA , Satoshi YOSHIKAWA
CPC classification number: H04N19/61 , G06T9/002 , H04N19/109 , H04N19/11 , H04N19/117 , H04N19/147 , H04N19/156 , H04N19/17 , H04N19/51 , H04N19/593 , H04N19/70 , H04N19/80 , H04N19/82 , 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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公开(公告)号：US20170272687A1
公开(公告)日：2017-09-21
申请号：US15613494
申请日：2017-06-05
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：US20170251244A1
公开(公告)日：2017-08-31
申请号：US15593478
申请日：2017-05-12
Inventor： Masayuki KOZUKA , Tadamasa TOMA , Kengo TERADA , Takahiro NISHI
IPC: H04N21/4363 , H04N21/4402 , H04N7/015 , H04N21/835 , H04N5/92 , H04N21/432 , H04N21/4408
CPC classification number: H04N21/43635 , H04N5/92 , H04N7/015 , H04N7/167 , H04N21/4325 , H04N21/4402 , H04N21/440263 , H04N21/4408 , H04N21/835
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：US20170251190A1
公开(公告)日：2017-08-31
申请号：US15596190
申请日：2017-05-16
Inventor： Tadamasa TOMA , Masayuki KOZUKA , Hiroshi YAHATA , Takahiro NISHI , Kengo TERADA
IPC: H04N9/87 , H04N11/24 , H04N21/431 , G11B20/10
CPC classification number: H04N9/8715 , G06F3/14 , G11B20/10 , H04N7/0125 , H04N7/015 , H04N9/642 , H04N9/87 , H04N11/002 , H04N21/431
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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