Patents by Inventor Katsuo Saigo
Katsuo Saigo 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: 10209518Abstract: The present disclosure provides a display apparatus, in which a shift of a transmission or reflection wavelength characteristic due to an incident angle of light is suppressed, and observation of external light necessary for display and image light necessary for display is possible. The display apparatus of the present disclosure includes an image light generator that generates image light by use of light in each of at least a first wavelength band, a second wavelength band, and a third wavelength band, and a light synthesizing part that transmits external light and reflects the image light. The light synthesizing part has a transparent substrate having a concave surface on which the image light is reflected, and a film that is provided on the concave surface of the substrate, reflects the image light, and transmits light in a predetermined wavelength band of the external light.Type: GrantFiled: August 2, 2016Date of Patent: February 19, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Katsuo Saigo, Hiroshi Mitani
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Patent number: 9641829Abstract: An image display apparatus includes: a first light source; a second light source; a deflection unit for deflecting the light emitted from the first light source toward a viewing position of the first image and deflecting the light emitted from the second light source toward a viewing position of the second image; and a spatial light modulator that has a plurality of pixels each of which includes a plurality of subpixels, and modulates the light having passed through the deflection unit on the basis of a first image signal and a second image signal. Each of subpixels is formed in a shape where the length in the first direction, which is substantially parallel with the line connecting the viewing position of the first image to the viewing position of the second image, is longer than or equal to the length in the second direction orthogonal to the first direction.Type: GrantFiled: May 13, 2015Date of Patent: May 2, 2017Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Katsuo Saigo, Hiroshi Mitani, Kei Tasaka, Kazuo Okamoto, Shuji Inoue
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Patent number: 9575327Abstract: Stereoscopic image viewing eyewear includes a left-eye shutter that controls a visual field of a viewer's left eye, a right-eye shutter that controls a visual field of a viewer's right eye, a distance determiner that detects a distance between the display device and the eyewear and determines whether the detected distance is smaller than a predetermined value, and a shutter controller that controls open and close of the left-eye shutter and the right-eye shutter based on the determined result of the distance determiner to cause the viewer to view the stereoscopic image when the detected distance is larger than a predetermined value, and to cause the viewer to view a non-stereoscopic image when the detected distance is smaller than the predetermined value.Type: GrantFiled: March 13, 2013Date of Patent: February 21, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Katsuo Saigo, Kazuo Okamoto
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Publication number: 20160341965Abstract: The present disclosure provides a display apparatus, in which a shift of a transmission or reflection wavelength characteristic due to an incident angle of light is suppressed, and observation of external light necessary for display and image light necessary for display is possible. The display apparatus of the present disclosure includes an image light generator that generates image light by use of light in each of at least a first wavelength band, a second wavelength band, and a third wavelength band, and a light synthesizing part that transmits external light and reflects the image light. The light synthesizing part has a transparent substrate having a concave surface on which the image light is reflected, and a film that is provided on the concave surface of the substrate, reflects the image light, and transmits light in a predetermined wavelength band of the external light.Type: ApplicationFiled: August 2, 2016Publication date: November 24, 2016Inventors: Katsuo SAIGO, Hiroshi MITANI
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Patent number: 9472094Abstract: A display device includes a display portion for displaying a video, a generator for generating a synchronization signal including a command signal synchronized with display of frame images of the video and a transmitter for transmitting the synchronization signal. The command signal including a predetermined member of pulse signals has a leading pulse signal for notifying a start of the command signal, a terminal pulse signal for notifying an end of the command signal and a control pulse signal for notifying a content of synchronization control synchronized with the display of the frame images.Type: GrantFiled: February 16, 2012Date of Patent: October 18, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANGEMENT CO., LTD.Inventors: Kazuhiro Mihara, Hiroshi Mitani, Shuji Inoue, Masanobu Inoe, Katsuo Saigo, Seiji Nakazawa
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Publication number: 20160223818Abstract: An image display device of the present disclosure includes a display element configured to project image light based on an input image signal, a concave mirror configured to transmit external environment light incident from outside and to reflect the image light from the display element, and a housing configured to retain the display element and the concave mirror in a predetermined position relation, and having an opening portion for allowing the external environment light and the image light to pass therethrough. The concave mirror and the display element are mounted on the housing in the predetermined position relation in which the concave mirror guides the reflected light of the image light to a fixed direction toward the opening portion.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Kei TASAKA, Katsuo SAIGO, Hiroshi MITANI
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Patent number: 9204141Abstract: An eyewear device which adjusts a transmitted light amount to a left eye and a right eye of a viewer to perform an assistance operation, which assists the viewer in viewing images so that the viewer stereoscopically perceives the images, comprising: a receiver configured to receive a synchronization signal in synchronization with display of the images; and a controller which analyzes a signal configuration of the synchronization signal after power supply is started for the assistance operation, and switches a control mode between a first control mode and a second control mode, which is different from the first control mode, based on an analysis result of the signal configuration.Type: GrantFiled: September 11, 2012Date of Patent: December 1, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Katsuo Saigo, Kazuhiro Mihara, Masashi Imai, Norikazu Kaneshiro
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Publication number: 20150249820Abstract: An image display apparatus includes: a first light source; a second light source; a deflection unit for deflecting the light emitted from the first light source toward a viewing position of the first image and deflecting the light emitted from the second light source toward a viewing position of the second image; and a spatial light modulator that has a plurality of pixels each of which includes a plurality of subpixels, and modulates the light having passed through the deflection unit on the basis of a first image signal and a second image signal. Each of subpixels is formed in a shape where the length in the first direction, which is substantially parallel with the line connecting the viewing position of the first image to the viewing position of the second image, is longer than or equal to the length in the second direction orthogonal to the first direction.Type: ApplicationFiled: May 13, 2015Publication date: September 3, 2015Inventors: Katsuo SAIGO, Hiroshi MITANI, Kei TASAKA, Kazuo OKAMOTO, Shuji INOUE
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Patent number: 9113161Abstract: Provided is a video system equipped with a video display apparatus and video viewing glasses used for viewing a video displayed on the video display apparatus. The video display apparatus includes: a display section for displaying the video; a synchronizing signal generator for generating an external synchronizing signal in synchronism with the video to notify a display end of a frame constituting the video in synchronism with the video; and a synchronizing signal transmitter for transmitting the external synchronizing signal to the video viewing glasses. The video viewing glasses include: a synchronizing signal receiver for receiving the external synchronizing signal; an optical filter section having a pair of optical filters for adjusting light amounts to be transmitted to left and right eyes of a viewer, respectively; and an optical filter controller for controlling the optical filter section in response to the external synchronizing signal.Type: GrantFiled: July 14, 2009Date of Patent: August 18, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazuhiro Mihara, Shuji Inoue, Hiroshi Mitani, Masanobu Inoe, Keizo Matsumoto, Kazuo Okamoto, Katsuo Saigo
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Patent number: 9001119Abstract: The instant application describes display device for switching display mode between first display mode for displaying stereoscopic images with eyewear device which adjusts incident light amounts to the left and right eyes, and second display mode different from the first display mode. The display device includes signal generator which generates timing signals for notifying timings of increasing the incident light amount to the left and right eyes in the first and second display modes or stop signals for stopping the adjustment operation, as control signals for the adjustment operation; and transmitter which transmits the control signals to the eyewear device. During the first display mode, the transmitter transmits the timing signals for the first display mode. Switching operation from the first to second display mode causes the transmitter to transmit the stop signal and then the timing signal for the second display mode to the eyewear device.Type: GrantFiled: September 13, 2012Date of Patent: April 7, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazuhiro Mihara, Keisuke Suetsugi, Katsuo Saigo, Seiji Nakazawa
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Patent number: 8934001Abstract: An eyeglass device for assisting in viewing a video to be stereoscopically perceived includes an optical filter portion with left and right filters for adjusting light amount to be transmitted to left and right eyes, respectively and a controller for controlling adjustment operation of the light amount by the optical filter portion, wherein the controller switches a control mode of the optical filter portion between a first control mode of controlling the optical filter portion so that the adjustment operation becomes synchronized with display of a frame image of the video and a second control mode of controlling the optical filter so that that the adjustment operation becomes slower than a frame rate of the video to make a viewer perceive the adjustment operation which is asynchronous with the display of the frame image.Type: GrantFiled: September 23, 2011Date of Patent: January 13, 2015Assignee: Panasonic CorporationInventors: Shuji Inoue, Hiroshi Mitani, Kazuhiro Mihara, Masanobu Inoe, Katsuo Saigo, Seiji Nakazawa
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Patent number: 8817873Abstract: The invention provides an image coding/recording apparatus which can solve problems of large processing loads due to the real-time re-coding and problems of complicated controls and circuits for returning processing. The image coding/recording apparatus according to an aspect of the invention codes and records image data. The image coding/recording apparatus includes: a coding unit operable to code the image data; a recording unit operable to record the coded data; and a re-coding control unit operable to (i) control said coding unit to re-code the coded data recorded by said recording unit and does not satisfy a predetermined condition, so that the re-coded data satisfies the predetermined condition, and (ii) control said recording unit to record the re-coded data, so that the re-coded data and non-re-coded data are reproduced consecutively.Type: GrantFiled: June 7, 2007Date of Patent: August 26, 2014Assignee: Panasonic CorporationInventors: Katsuo Saigo, Hiroshi Arakawa
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Patent number: 8675979Abstract: A transcoder reduces the processing amount when a coded stream to which at least intra prediction is applied is transcoded into a coded stream to which intra prediction and inter prediction are applied. The transcoder converts a first coded stream to at least part of which intra prediction is applied, into a second coded stream to which intra prediction and inter prediction are applied. The transcoder includes a decoding unit that decodes the first coded stream to generate decoded image data; a prediction mode obtaining unit that obtains a prediction mode of intra prediction applied in decoding; and a coding unit that codes the decoded image data by applying the intra prediction or inter prediction to generate the second coded stream. A control unit controls causes the coding unit to use the prediction mode obtained by the prediction mode obtaining unit when the coding unit applies intra prediction.Type: GrantFiled: December 11, 2009Date of Patent: March 18, 2014Assignee: Panasonic CorporationInventors: Takuma Chiba, Kenjiro Tsuda, Tatsuro Juri, Yuki Kobayashi, Takashi Masuno, Katsuo Saigo, Yukinaga Seki, Hiroaki Shimazaki
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Patent number: 8643707Abstract: An image signal processing apparatus performs gradation control on respective pixels. Specifically, the image signal processing apparatus includes an image signal processing unit which controls light emission and non-light emission of respective subfields so as to provide a field having a level of brightness. Here, the field is a unit display period of the pixels and divided into the subfields which have different light emission periods and are arranged in a predetermined sequence. In the predetermined sequence, the subfields are arranged in a manner such that a subfield having the shortest light emission period among the subfields is in the first place, one of a subfield having the longest light emission period and a subfield having the second longest light emission period among the subfields is in the second place, and the other one is in the third place.Type: GrantFiled: September 3, 2010Date of Patent: February 4, 2014Assignee: Panasonic CorporationInventors: Keizo Matsumoto, Hiroshi Miyai, Katsuo Saigo, Masanobu Inoe, Seiji Nakazawa
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Patent number: 8599107Abstract: An image system includes: a display device configured to display an image; and an eyeglasses device for viewing the image displayed by the display device, wherein the display device includes: a display portion configured to display in time series the image to be viewed through the eyeglasses device; a signal generation portion configured to generate a synchronization signal for synchronizing timing of switching of frames of the image; and a transmission portion configured to transmit the synchronization signal, the eyeglasses device includes: an optical filter portion configured to adjust an amount of light of the image; a reception portion configured to receive the synchronization signal transmitted from the transmission portion; and a control portion configured to control action of the optical filter portion corresponding to the switching of the frames of the image, based on the synchronization signal, the signal generation portion further generates a parameter signal including action information for definiType: GrantFiled: August 28, 2009Date of Patent: December 3, 2013Assignee: Panasonic CorporationInventors: Kazuhiro Mihara, Hiroshi Miyai, Katsuo Saigo, Masafumi Shimotashiro, Seiji Nakazawa, Masayuki Kozuka, Yoshiho Gotoh
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Patent number: 8564648Abstract: An image signal processing apparatus outputs, alternately on a-per frame basis, a first image to be displayed to one of left and right eyes of a viewer and a second image to be displayed to the other eye, and transmits, to a pair of image viewer glasses, a synchronizing signal for controlling timing of opening and closing of optical filters so as to allow the viewer to see the output frames through corresponding eyes. Specifically, the apparatus includes: a persistence amount detecting unit which detects a persistence amount indicating an effect of a first frame in the first image on a second frame in the second image and immediately following the first frame; and an optical-filter adaptive control unit which generates the synchronizing signal indicating timing of opening and closing of the optical filter corresponding to the second frame. The timing is changed based on the persistence amount detected.Type: GrantFiled: September 3, 2010Date of Patent: October 22, 2013Assignee: Panasonic CorporationInventors: Keizo Matsumoto, Hiroshi Miyai, Katsuo Saigo, Masanobu Inoe, Seiji Nakazawa
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Patent number: 8553031Abstract: The instant application describes a display device for switching a display mode between a first display mode for displaying a stereoscopic image with an eyewear device, and a second display mode, which is different from the first display mode. The display device includes a signal generator, which generates a timing signal for notifying a timing of an increasing period of an incident light amount to left and right eyes or a stop signal for stopping the adjustment operation as a control signal, which is transmitted by a transmitter to the eyewear device. The transmitter transmits the timing signal for the first display mode while the image is displayed in the first display mode. If the display mode is then switched from the first to second display mode, the transmitter sequentially transmits the stop signal and the timing signal for the second display mode to the eyewear device.Type: GrantFiled: September 12, 2012Date of Patent: October 8, 2013Assignee: Panasonic CorporationInventors: Kazuhiro Mihara, Katsuo Saigo, Keisuke Suetsugi
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Patent number: 8542246Abstract: A color conversion device generates color data in a second color gamut based on first converted color data and input color data, which are obtained from input color data in a first color gamut, and outputs the color data in the second color gamut. The color conversion device includes a first color mapping unit which generates the first converted color data by mapping the input color data into the second color gamut; a color mixing unit which generates color data by mixing the first converted color data and second converted color data at a ratio corresponding to the first color gamut and the second color gamut; and a color data output unit which outputs the color data.Type: GrantFiled: March 11, 2009Date of Patent: September 24, 2013Assignee: Panasonic CorporationInventors: Katsuo Saigo, Hiroshi Miyai, Hisakazu Hitomi, Masanobu Inoe, Masahiro Kawashima, Akihiro Takeuchi
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Patent number: 8494050Abstract: Provided is a moving picture coding device which makes it possible to suppress deterioration in coding efficiency caused by flickers occurring at a time of high-speed capturing under fluorescent lamp lighting or the like. A moving picture coding device which codes a plurality of pictures obtained by capturing an object, the moving picture coding device including: a luminance information acquisition unit which acquires luminance information which indicates a luminance level of light in an environment where the object is captured; and a coding unit which codes the pictures, using a prediction coding method in which a picture type is applied in the coding of the pictures according to a flicker state of the light obtained from the luminance information.Type: GrantFiled: May 12, 2009Date of Patent: July 23, 2013Assignee: Panasonic CorporationInventors: Yukinaga Seki, Kenjiro Tsuda, Tatsuro Juri, Yuki Kobayashi, Takashi Masuno, Katsuo Saigo, Hiroaki Shimazaki, Takuma Chiba
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Patent number: 8451898Abstract: The present invention provides a motion vector estimation apparatus which can decrease circuit size by reducing the amount of computations for detecting a motion vector. The motion vector estimation apparatus in the present invention includes a motion vector estimation unit which estimates a motion vector MV0F for the target block BL0 by searching within a reference picture P1 for a block with an image similar to an image in the target block BL0, which is included in a picture B2; a prediction calculation unit and a prediction range control unit which specify a search range in the reference picture P1 based on the motion vector MV0F and; the motion vector estimation unit estimates the motion vector MV1F for the target block BL1 by searching in the search range for a block with an image similar to an image in the target block BL1, which is included in the picture B3.Type: GrantFiled: November 2, 2006Date of Patent: May 28, 2013Assignee: Panasonic CorporationInventors: Katsuo Saigo, Tatsuro Juri, Hideyuki Ohgose, Koji Arimura, Hiroshi Arakawa, Kei Tasaka, Yuuki Maruyama