Patents by Inventor Takehiro Nakatsue
Takehiro Nakatsue has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10565695Abstract: An image processing apparatus and an image processing method to preferably transmit/receive or display high dynamic range images. In an image transmission system implementation, metadata is transmitted, the metadata storing information such as peak luminance, color gamut and optical-electro transfer or other characteristics of high dynamic range (HDR) content. An image receiving apparatus utilizes the metadata to perform dynamic range conversion using the metadata to adapt its display to display the HDR content.Type: GrantFiled: June 11, 2015Date of Patent: February 18, 2020Assignee: Sony CorporationInventors: Hiroaki Eto, Toshiya Hamada, Shinobu Hattori, Kenichi Kanai, Takumi Tsuru, Tomizo Shiraishi, Takehiro Nakatsue
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Publication number: 20160210730Abstract: Provided is an image processing apparatus and an image processing method. The image processing apparatus includes circuitry configured to receive image data, and receive metadata set based on the image data. The metadata including information serving as a display mapping reference to maintain a characteristic of the image data to a portion of the image data.Type: ApplicationFiled: June 11, 2015Publication date: July 21, 2016Applicant: Sony CorporationInventors: Hiroaki Eto, Toshiya Hamada, Shinobu Hattori, Kenichi Kanai, Takumi Tsuru, Tomizo Shiraishi, Takehiro Nakatsue
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Patent number: 8965122Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: GrantFiled: May 16, 2014Date of Patent: February 24, 2015Assignee: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Patent number: 8929653Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: GrantFiled: September 23, 2013Date of Patent: January 6, 2015Assignee: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Publication number: 20140247391Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: ApplicationFiled: May 16, 2014Publication date: September 4, 2014Applicant: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Patent number: 8787667Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: GrantFiled: September 23, 2013Date of Patent: July 22, 2014Assignee: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Publication number: 20140009637Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: ApplicationFiled: September 23, 2013Publication date: January 9, 2014Applicant: SONY CORPORATIONInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Patent number: 8600160Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: GrantFiled: June 11, 2012Date of Patent: December 3, 2013Assignee: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Publication number: 20120243782Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: ApplicationFiled: June 11, 2012Publication date: September 27, 2012Applicant: SONY CORPORATIONInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Patent number: 8208721Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: GrantFiled: September 25, 2009Date of Patent: June 26, 2012Assignee: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Patent number: 8018468Abstract: Disclosed herein is an image signal processor for carrying out conversion into an xvYCC signal by using a photograph film as a material, the image signal processor including: acquisition means for acquiring print film concentration data based on said photograph film; generation means for generating spectral data on an image on a screen previously presumed based on spectral concentration characteristics of colors of a positive film having an image projected on said screen, a spectral distribution of a projection light source, and the print film concentration data; arithmetical operation means for arithmetically operating an XYZ tri-stimulus value corresponding to the spectral data; and conversion means for converting the XYZ tri-stimulus value into the xvYCC signal.Type: GrantFiled: April 10, 2008Date of Patent: September 13, 2011Assignee: Sony CorporationInventors: Tatsuhiko Matsumoto, Yutaka Imai, Takehiro Nakatsue
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Publication number: 20110148902Abstract: An evaluation method of a display device includes steps of obtaining a measured value of color difference, for the display device to be evaluated which is in a state of displaying a predetermined color reference image, determining a detection limit value of color difference for the display device, in consideration of spectral luminous efficiency which has a dependence on color, with use of a subjective evaluation result of color difference obtained for the display device which is in a state of displaying both the color reference image and a color comparison image in parallel, determining an evaluation parameter with use of the measured value of color difference and the detection limit value of color difference; and evaluating a display property of the display device with use of the evaluation parameter.Type: ApplicationFiled: November 12, 2010Publication date: June 23, 2011Applicant: Sony CorporationInventors: Shuichi Haga, Takehiro Nakatsue, Junichi Ohsako, Tatsuhiko Matsumoto
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Patent number: 7885461Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: GrantFiled: September 25, 2009Date of Patent: February 8, 2011Assignee: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita
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Patent number: 7808585Abstract: A color filter (19) used in a transmissive color liquid crystal display panel of a color liquid crystal display (LCD) apparatus. This color filter (19) is constituted by a tristimulus color filter for wavelength-selecting and transmitting red light, green light and blue light. Mixing of blue color and red color is prohibited by not having the transmission wavelength band of the red filter CFR overlaid substantially on the transmission wavelength band of the blue filter CFB.Type: GrantFiled: July 12, 2005Date of Patent: October 5, 2010Assignee: Sony CorporationInventors: Shuichi Haga, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Yasuhiro Tagawa, Yutaka Ota, Takashi Oku, Takeo Arai
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Patent number: 7789527Abstract: Disclosed is a backlight device which is used for a color liquid crystal display and includes a light source and a backlight housing (23). The light source includes a red light emitting diode (21R), radiating red light, having a peak wavelength ?pr such that 625 nm??pr?685 nm, a green light emitting diode (21G), radiating green light, having a peak wavelength ?pg such that 505 nm??pg?540 nm, and a blue light emitting diode (21B), radiating blue light, having a peak wavelength ?pb such that 420 nm??pb?465 nm. The backlight housing mixes the red light, the green light and the blue light, radiated from the light source, to generate white light. A light emission intensity is adjusted so that a half value width of a spectrum of the red light, a half value width of a spectrum of the green light and a half value width of a spectrum of the blue light are such that 20 nm?hwr?25 nm, 30 nm?hwg?40 nm and 25 nm?hwb?30 nm, respectively.Type: GrantFiled: April 28, 2005Date of Patent: September 7, 2010Assignee: Sony CorporationInventors: Tatsuhiko Matsumoto, Koichiro Kakinuma, Takehiro Nakatsue, Shuichi Haga
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Publication number: 20100182336Abstract: A liquid crystal display device includes: an acquisition unit that acquires viewing direction information indicating a direction in which a user views a displayed image; a compensation unit that adaptively compensates a chromaticity point in a video signal using the viewing direction information acquired by the acquisition unit together with color shift amount information that uses a color difference to associate the viewing direction with a color shift amount of display light; and a liquid crystal display unit that performs video display based on the video signal compensated by the compensation unit.Type: ApplicationFiled: January 15, 2010Publication date: July 22, 2010Applicant: SONY CORPORATIONInventors: Shuichi HAGA, Hiroaki ETO, Takehiro NAKATSUE, Yoshihide SHIMPUKU
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Publication number: 20100165629Abstract: A color chart device for providing color standards for a plurality of colors, with less power consumption as well as reduced luminance variations in colored light within an emission surface, is provided. The color chart device includes a plurality of first light emission sections emitting colored light in wavelength ranges corresponding to the plurality of colors. The first light emission section includes: an enclosure having an emission surface; a single-color light source arranged in the enclosure to emit colored light; a reflective sheet formed on inner surfaces other than the emission surface in the enclosure; and a shielding plate arranged between the single-color light source and the emission surface so as to interrupt the colored light emitted from the single-color light source. The wavelength ranges of the colored light emitted from the first light emission sections are different from one another.Type: ApplicationFiled: July 1, 2008Publication date: July 1, 2010Applicant: SONY CORPORATIONInventors: Shuichi Haga, Takehiro Nakatsue, Yoshihide Shimpuku
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Publication number: 20100134694Abstract: A color gamut expansion method and a display device where the color gamut expansion method is applied are provided, realizing appropriate color reproduction compared with the prior. The color gamut expansion method includes the steps of: acquiring a subjective evaluation result signal inputted through user operation; and adjusting magnitude of chroma enhancement and magnitude of brightness contrast enhancement, of an input video signal, independently from each other, based on the subjective evaluation result signal, thereby performing a signal processing to expand a color gamut of the input video signal.Type: ApplicationFiled: October 28, 2009Publication date: June 3, 2010Applicant: SONY CORPORATIONInventors: Masato SAKURAI, Takehiro NAKATSUE
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Patent number: 7714497Abstract: Disclosed is a color liquid display (LCD) employing a transmissive color liquid display panel. The display includes a complementary color light emitting diode, which is one of a cyan light emitting diode (21C), emitting cyan light, a yellow light emitting diode, emitting yellow light, and a magenta light emitting diode, emitting magenta light, in addition to light emitting diodes emitting three prime colors, as a light source. The display also includes a complementary color filter, having at least one of a cyan filter CFC having a transmission wavelength range corresponding to the cyan light, a yellow filter CFY having a transmission wavelength range corresponding to the yellow light and a magenta filter CFM having a transmission wavelength range corresponding to the magenta light, in addition to a tristimulus color filer, as a color filter (19).Type: GrantFiled: September 16, 2005Date of Patent: May 11, 2010Assignee: Sony CorporationInventors: Shuichi Haga, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto
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Publication number: 20100046835Abstract: Signals are provided which allow colors in a wider color range than predetermined standards, which can be handled by apparatus according to such predetermined standards. A primary color converter converts first color signals having primary color points in a wider color range than the primary color points according to BT.709 into second color signals based on the primary colors according to BT.709. A photoelectric transducer converts the second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range wider than a range from 0 to 1.0 of color signals corresponding to a luminance signal and color difference signals according to BT.709. A color signal converter converts the third color signals into a luminance signal and color difference signals. A corrector incorporated in the color signal converter corrects the color difference signals into color difference signals.Type: ApplicationFiled: September 25, 2009Publication date: February 25, 2010Applicant: Sony CorporationInventors: Ko Ishimoto, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Shuichi Haga, Hiroshi Takizuka, Yoshiki Shirochi, Naoya Katoh, Hiroshi Yamashita, Koichi Oura, Yoshihiro Kosugi, Junichi Iwai, Kazuji Uemura, Shigeo Kubota, Hideo Morita