Patents by Inventor Hisakazu Aoyanagi
Hisakazu Aoyanagi 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: 11620732Abstract: A multi-projection system for projecting an image from a plurality of projectors onto a three-dimensional object, includes a master projector and a slave projector. The slave projector estimates an amount of blur in an image projected from the projector itself on a plurality of planes of the three-dimensional object, and provides the estimated amount of blur in the image to the master projector. The master projector estimates an amount of blur in an image projected from the projector itself on a plurality of planes of the three-dimensional object, and determines a region of the image projected from the plurality of projectors for each of the plurality of planes based on the amount of blur in the image estimated by the master projector and the amount of blur in the image estimated by the slave projector.Type: GrantFiled: September 19, 2017Date of Patent: April 4, 2023Assignee: Sharp NEC Display Solutions, Ltd.Inventor: Hisakazu Aoyanagi
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Patent number: 11297292Abstract: A projector includes a light source; a spatial light modulator; a signal processing unit that includes a tone map unit that performs a luminance gradation conversion of an input video data according to a tone map indicating a relationship of an output luminance with respect to an input luminance; a luminance acquiring unit that obtains a maximum luminance of a projection surface of the modulated light; and a control unit that controls an amount of light of the light source and sets the tone map. When the maximum luminance of the projection surface is equal to or greater than a first threshold value indicating a maximum luminance of the input video data, the control unit sets, to the tone map unit, a tone map in which a maximum value of the output luminance is set to be the first threshold value.Type: GrantFiled: July 19, 2018Date of Patent: April 5, 2022Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.Inventor: Hisakazu Aoyanagi
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Patent number: 11294614Abstract: A display system includes a plurality of display devices and portable device configured to operate the plurality of display devices. Each of the plurality of display devices includes an identification information generation unit configured to generate identification information for identifying its own device, and a display control unit configured to cause output information representing the identification information generated by the identification information generation unit to be output from a display unit. The portable device includes an imaging unit configured to capture an image displayed by the display unit of each of the plurality of display devices and a device control unit configured to detect the identification information identifying each of the plurality of display devices on the basis of the output information included in the image captured by the imaging unit and associate the detected identification information with a position of each of the plurality of display devices.Type: GrantFiled: April 5, 2021Date of Patent: April 5, 2022Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.Inventor: Hisakazu Aoyanagi
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Publication number: 20210321067Abstract: A projector includes a light source; a spatial light modulator; a signal processing unit that includes a tone map unit that performs a luminance gradation conversion of an input video data according to a tone map indicating a relationship of an output luminance with respect to an input luminance; a luminance acquiring unit that obtains a maximum luminance of a projection surface of the modulated light; and a control unit that controls an amount of light of the light source and sets the tone map. When the maximum luminance of the projection surface is equal to or greater than a first threshold value indicating a maximum luminance of the input video data, the control unit sets, to the tone map unit, a tone map in which a maximum value of the output luminance is set to be the first threshold value.Type: ApplicationFiled: July 19, 2018Publication date: October 14, 2021Inventor: Hisakazu AOYANAGI
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Publication number: 20210224016Abstract: A display system includes a plurality of display devices and portable device configured to operate the plurality of display devices. Each of the plurality of display devices includes an identification information generation unit configured to generate identification information for identifying its own device, and a display control unit configured to cause output information representing the identification information generated by the identification information generation unit to be output from a display unit. The portable device includes an imaging unit configured to capture an image displayed by the display unit of each of the plurality of display devices and a device control unit configured to detect the identification information identifying each of the plurality of display devices on the basis of the output information included in the image captured by the imaging unit and associate the detected identification information with a position of each of the plurality of display devices.Type: ApplicationFiled: April 5, 2021Publication date: July 22, 2021Inventor: Hisakazu Aoyanagi
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Publication number: 20200193568Abstract: A multi-projection system for projecting an image from a plurality of projectors onto a three-dimensional object, includes a master projector and a slave projector. The slave projector estimates an amount of blur in an image projected from the projector itself on a plurality of planes of the three-dimensional object, and provides the estimated amount of blur in the image to the master projector. The master projector estimates an amount of blur in an image projected from the projector itself on a plurality of planes of the three-dimensional object, and determines a region of the image projected from the plurality of projectors for each of the plurality of planes based on the amount of blur in the image estimated by the master projector and the amount of blur in the image estimated by the slave projector.Type: ApplicationFiled: September 19, 2017Publication date: June 18, 2020Inventor: Hisakazu AOYANAGI
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Patent number: 9049474Abstract: A moving image distribution server for distributing to a reproducing apparatus moving image data including video data and audio data and capable of prescribing decoding times and reproducing times for the video data and the audio data, the moving image distribution server including a data storage unit for storing in advance the moving image data including information as to the decoding times and the reproducing times for the video data and the audio data, a phase adjustment variable storage unit for storing a predetermined phase adjustment variable, and a first rewriter for reading the moving image data stored in the data storage unit, and changing the information included therein as to the decoding times or the reproducing times based on the predetermined phase adjustment variable to adjust the phase relationship between the video data and the audio data.Type: GrantFiled: October 14, 2011Date of Patent: June 2, 2015Assignee: NEC DISPLAY SOLUTIONS, LTD.Inventors: Hisakazu Aoyanagi, Tomohiro Mihara
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Publication number: 20120036547Abstract: A moving image distribution server for distributing to a reproducing apparatus moving image data including video data and audio data and capable of prescribing decoding times and reproducing times for the video data and the audio data, the moving image distribution server including a data storage unit for storing in advance the moving image data including information as to the decoding times and the reproducing times for the video data and the audio data, a phase adjustment variable storage unit for storing a predetermined phase adjustment variable, and a first rewriter for reading the moving image data stored in the data storage unit, and changing the information included therein as to the decoding times or the reproducing times based on the predetermined phase adjustment variable to adjust the phase relationship between the video data and the audio data.Type: ApplicationFiled: October 14, 2011Publication date: February 9, 2012Applicant: NEC VIEWTECHNOLOGY, LTD.Inventors: Hisakazu Aoyanagi, Tomohiro Mihara
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Patent number: 8107538Abstract: A moving image distribution system is capable of making phase adjustment of video data and audio data while preventing the cost of a display apparatus from increasing, by adjusting time information with a moving image distribution server. The moving image distribution server stores moving image data, reads the moving image data, changes information included therein as to decoding times or reproducing times of video data or audio data included in the moving image data based on a predetermined phase adjustment variable, and then distributes the moving image data. A reproducing apparatus receives the moving image data distributed from the moving image distribution server, decodes the moving image data according to the information included therein as to the decoding times and the reproducing times, and reproduces the moving image data.Type: GrantFiled: June 2, 2006Date of Patent: January 31, 2012Assignee: NEC Viewtechnology, Ltd.Inventors: Hisakazu Aoyanagi, Tomohiro Mihara
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Patent number: 7965634Abstract: A transmission rate adjustment device for supplying MPEG-TS at a desired transmission rate includes: a buffer; a buffer write unit for both sequentially writing to the buffer transport packets of the transport stream that have been read from an MPEG2-TS file and detecting time stamps in the transport stream; and a buffer read unit for transmitting to the MPEG decoder transport packets that have been sequentially read from the buffer at a transmission rate determined by a clock obtained by frequency-dividing a system clock of the MPEG decoder by a frequency division rate designated by a frequency division rate signal. The buffer read unit not only inserts NULL packets between transport packets, but also rewrites time stamps when adjustment cannot be realized by merely inserting the NULL packets.Type: GrantFiled: November 7, 2006Date of Patent: June 21, 2011Assignee: NEC Viewtechnology, Ltd.Inventor: Hisakazu Aoyanagi
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Patent number: 7429930Abstract: X-direction double integrator 3 integrates twice an acceleration that is detected by x-direction acceleration sensor 1, estimating a traveled distance in an x direction. Y-direction double integrator 4 integrates twice an acceleration that is detected by y-direction acceleration sensor 2, estimating a traveled distance in a y direction. Detection boundary storage unit 5 stores a monitoring area. Detection boundary comparator 6 determines whether the projector device is positioned outside of the monitoring area or not based on the traveled distance in the x direction which is estimated by x-direction double integrator 3, the traveled distance in the y direction which is estimated by y-direction double integrator 4, and the monitoring area stored in detection boundary storage unit 5.Type: GrantFiled: January 24, 2006Date of Patent: September 30, 2008Assignee: NEC Viewtechnology, Ltd.Inventor: Hisakazu Aoyanagi
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Publication number: 20070189315Abstract: A transmission rate adjustment device for supplying MPEG-TS at a desired transmission rate includes: a buffer; a buffer write unit for both sequentially writing to the buffer transport packets of the transport stream that have been read from an MPEG2-TS file and detecting time stamps in the transport stream; and a buffer read unit for transmitting to the MPEG decoder transport packets that have been sequentially read from the buffer at a transmission rate determined by a clock obtained by frequency-dividing a system clock of the MPEG decoder by a frequency division rate designated by a frequency division rate signal. The buffer read unit not only inserts NULL packets between transport packets, but also rewrites time stamps when adjustment cannot be realized by merely inserting the NULL packets.Type: ApplicationFiled: November 7, 2006Publication date: August 16, 2007Applicant: NEC VIEWTECHNOLOGY, LTD.Inventor: Hisakazu Aoyanagi
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Patent number: 7226173Abstract: A projector having a plurality of cameras for adjusting the focus of projected images, correcting projected images that are distorted and correcting projected images to match the outer profile of a screen if the screen is used as a projection object. The projector having a projection device, a projection lens, a focus adjuster, a zoom adjuster, an imager having the plurality of cameras for capturing respective images of a projection object a projection area calculator for calculating a projection area of an image depending on the distance from the projection lens based on the zoomed position from the zoom adjuster, a three-dimensional position detector for detecting the three-dimensional position of a predetermined object point corresponding to identical object points in the respective images captured by the cameras, and a distance detector for detecting the distance up to the object point from the three-dimensional position of the predetermined object point.Type: GrantFiled: February 10, 2005Date of Patent: June 5, 2007Assignee: NEC Viewtechnology, Ltd.Inventor: Hisakazu Aoyanagi
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Publication number: 20070040818Abstract: A moving image distribution system is capable of making phase adjustment of video data and audio data while preventing the cost of a display apparatus from increasing, by adjusting time information with a moving image distribution server. The moving image distribution server stores moving image data, reads the moving image data, changes information included therein as to decoding times or reproducing times of video data or audio data included in the moving image data based on a predetermined phase adjustment variable, and then distributes the moving image data. A reproducing apparatus receives the moving image data distributed from the moving image distribution server, decodes the moving image data according to the information included therein as to the decoding times and the reproducing times, and reproduces the moving image data.Type: ApplicationFiled: June 2, 2006Publication date: February 22, 2007Applicant: NEC VIEWTECHNOLOGY, LTD.Inventors: Hisakazu Aoyanagi, Tomohiro Mihara
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Publication number: 20060164242Abstract: X-direction double integrator 3 integrates twice an acceleration that is detected by x-direction acceleration sensor 1, estimating a traveled distance in an x direction. Y-direction double integrator 4 integrates twice an acceleration that is detected by y-direction acceleration sensor 2, estimating a traveled distance in a y direction. Detection boundary storage unit 5 stores a monitoring area. Detection boundary comparator 6 determines whether the projector device is positioned outside of the monitoring area or not based on the traveled distance in the x direction which is estimated by x-direction double integrator 3, the traveled distance in the y direction which is estimated by y-direction double integrator 4, and the monitoring area stored in detection boundary storage unit 5.Type: ApplicationFiled: January 24, 2006Publication date: July 27, 2006Applicant: NEC Viewtechnology, Ltd.Inventor: Hisakazu Aoyanagi
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Patent number: 6953250Abstract: A first area and a second are formed in an image projected by a projector. A standard image plate is placed in a surface on which an image for the first area is projected. A standard image has been drawn on a standard image plate and is displayed in correct colors when white light is projected on the standard image plate. The projector projects white light as the image for the first area. An image for the second area is projected on a projecting surface. A user operates an operating section so that the image in the second area is closer to the standard image. A color correcting section corrects the colors of the image in the second area on the basis of information inputted to the operating section.Type: GrantFiled: July 11, 2003Date of Patent: October 11, 2005Assignee: NEC Viewtechnology, Ltd.Inventors: Takehiko Yasumi, Kazuo Mochizuki, Hisakazu Aoyanagi, Michitaka Naitou, Shigenobu Jyou
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Publication number: 20050179875Abstract: A projector has a plurality of cameras for adjusting the focus of projected images, correcting projected images that are distorted when images are projected from the projector when it swings from side to side and tilts or when images are projected onto a shaped surface of a projection object, and correcting projected images so that to match the outer profile of the screen if the screen is used as a projection object.Type: ApplicationFiled: February 10, 2005Publication date: August 18, 2005Inventor: Hisakazu Aoyanagi
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Publication number: 20050163369Abstract: In a method of improving quality of color images displayed on or produced from a color image device, a user is made to select a color or an object area of an object of user's interest and color correction is conducted using the selected item as a central color of correction to thereby flexibly achieve color correction. The image color correcting device 1 conducts color correction for an input image 2 and supplying an output image to an image display section 3 and includes object selecting means 10 for selecting an object item or an object color as a color correction object from the output image of the image display section 3 and a color correction processing section 11 for calculating a central color of an object item or an object color thus selected and setting the central color as a central color of correction and correcting the central color to thereby correct the output image into a desired color.Type: ApplicationFiled: September 19, 2003Publication date: July 28, 2005Inventors: Shigenobu Jyou, Masato Tsukada, Kazuo Mochizuki, Takehiko Yasumi, Hisakazu Aoyanagi, Michitaka Naitou
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Patent number: 6846081Abstract: An image sensor is installed in the vicinity of a projection lens. The image sensor images a projected and displayed image and a screen. A projection display area and a screen area are detected from the image imaged by the image sensor. An inputted image data is corrected so that the projection display area matches the screen area. The image to be displayed is automatically displayed in a shape, which matches a display surface of the screen.Type: GrantFiled: July 18, 2003Date of Patent: January 25, 2005Assignee: NEC Viewtechnology, Ltd.Inventors: Kazuo Mochizuki, Hisakazu Aoyanagi, Daisuke Moriwaki
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Publication number: 20040061838Abstract: An image sensor is installed in the vicinity of a projection lens. The image sensor images a projected and displayed image and a screen. A projection display area and a screen area are detected from the image imaged by the image sensor. An inputted image data is corrected so that the projection display area matches the screen area. The image to be displayed is automatically displayed in a shape, which matches a display surface of the screen.Type: ApplicationFiled: July 18, 2003Publication date: April 1, 2004Applicant: NEC VIEWTECHNOLOGY, LTDInventors: Kazuo Mochizuki, Hisakazu Aoyanagi, Daisuke Moriwaki