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公开(公告)号：US10419789B2
公开(公告)日：2019-09-17
申请号：US15046491
申请日：2016-02-18
Inventor： Masayuki Kozuka , Masaya Yamamoto , Kaoru Murase , Tadamasa Toma
IPC: G06F21/10 , H04N21/2347 , G06F21/60 , G11B20/00 , H04N5/85 , H04N9/79 , H04N21/41 , H04N21/433 , H04N21/4405 , H04N21/4408 , H04N21/4627 , H04N21/8355 , H04N21/854 , H04N9/804
Abstract: A method includes: holding a device key provided to an information processing terminal; reading an encrypted content and conversion control information from a recording medium; decoding the read encrypted content using the held device key to obtain a decoded content; converting the decoded content into an export format to obtain an export content; generating playback right information indicating that the information processing terminal can play back the converted export content according to the read conversion control information; and controlling whether the playback right information can be generated according to a first flag.
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公开(公告)号：US10313743B2
公开(公告)日：2019-06-04
申请号：US15373509
申请日：2016-12-09
Inventor： Masayuki Kozuka , Tadamasa Toma , Kengo Terada , Takahiro Nishi
IPC: H04N21/4363 , H04N7/015 , H04N21/4408 , H04N21/4402 , H04N5/92 , H04N7/167 , H04N21/835 , H04N21/432
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：US10257486B2
公开(公告)日：2019-04-09
申请号：US15596190
申请日：2017-05-16
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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Patent Agency Ranking
公开(公告)号：US10097786B2
公开(公告)日：2018-10-09
申请号：US15583050
申请日：2017-05-01
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N5/57 , G09G5/10 , H04N5/20 , G06F3/14 , H04N5/76 , H04N7/01 , 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：US09973724B2
公开(公告)日：2018-05-15
申请号：US15583090
申请日：2017-05-01
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
IPC: H04N19/98 , H04N5/57 , G09G5/10 , H04N5/20 , G06F3/14 , H04N5/76 , H04N7/01 , H04N7/015 , H04N9/79 , H04N9/87
CPC classification number: H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , 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：US09918019B2
公开(公告)日：2018-03-13
申请号：US15584365
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：US09832506B2
公开(公告)日：2017-11-28
申请号：US15504823
申请日：2015-08-18
Inventor： Masayuki Kozuka , Naoshi Usuki , Toshiroh Nishio , Satoshi Takahashi , Takahiro Nishi
IPC: H04N5/44 , H04N5/38 , H04N21/40 , H04N7/04 , G11B27/031
CPC classification number: H04N21/40 , G11B27/031 , H04N5/44 , H04N5/4401 , H04N5/775 , H04N7/04 , H04N21/436 , H04N21/43635
Abstract: An AV signal transmission and receiving system capable of appropriately receiving an AV signal includes a source apparatus and a sink apparatus connected to the source apparatus via an HDMI (registered trademark) cable. The sink apparatus includes: an AV signal receiving unit which receives an AV signal via the HDMI cable; a memory which holds the EDID; a rewriting unit which rewrites the EDID; an HPD control unit which controls output of an HPD signal; and a determining unit which: determines whether the AV signal which has been received is an HDMI signal conforming to an HDMI standard or a digital visual interface (DVI) signal; and when the determining unit determines that the AV signal is a DVI signal, instructs the rewriting unit to rewrite the EDID and instructs the HPD control unit to output the HPD signal indicating that reading of the EDID which has been rewritten is possible.
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公开(公告)号：US09762843B2
公开(公告)日：2017-09-12
申请号：US15367222
申请日：2016-12-02
Inventor： Kengo Terada , Masayuki Kozuka , Takahiro Nishi , Tadamasa Toma
CPC classification number: H04N5/57 , G06F3/14 , G09G5/10 , G09G2320/0276 , G09G2370/04 , H04N5/20 , H04N5/76 , H04N7/01 , H04N7/0125 , H04N7/015 , H04N9/7925 , 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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