Patents by Inventor Yoshihito Ohta
Yoshihito Ohta 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: 10750098Abstract: An image processing device configured to synthesize a first image and a second image shot in two or more exposure times different in length in a parallel way within one frame time, includes: a level adjuster configured to adjust the first image and output a corrected first image having a luminance level substantially aligned with a luminance level of the second image; a movement detector configured to calculate absolute values of differences between positionally corresponding pixel pairs in the corrected first image and the second image and accumulate the calculated absolute value on an image block basis to obtain a movement detection amount on the image block basis; a movement blending ratio calculator configured to smoothen the amounts of detected movement and calculate a movement blending ratio between positionally corresponding pixel pairs based on the smoothened amounts of detected movement; and an image synthesizer configured to generate a movement-adaptive image by synthesizing pixels at the correspondType: GrantFiled: September 27, 2017Date of Patent: August 18, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Nobutoshi Fujinami, Shigeru Furumiya, Yoshihito Ohta
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Publication number: 20190306399Abstract: An image processing device configured to synthesize a first image and a second image shot in two or more exposure times different in length in a parallel way within one frame time, includes: a level adjuster configured to adjust the first image and output a corrected first image having a luminance level substantially aligned with a luminance level of the second image; a movement detector configured to calculate absolute values of differences between positionally corresponding pixel pairs in the corrected first image and the second image and accumulate the calculated absolute value on an image block basis to obtain a movement detection amount on the image block basis; a movement blending ratio calculator configured to smoothen the amounts of detected movement and calculate a movement blending ratio between positionally corresponding pixel pairs based on the smoothened amounts of detected movement; and an image synthesizer configured to generate a movement-adaptive image by synthesizing pixels at the correspondType: ApplicationFiled: September 27, 2017Publication date: October 3, 2019Inventors: NOBUTOSHI FUJINAMI, SHIGERU FURUMIYA, YOSHIHITO OHTA
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Publication number: 20180012068Abstract: A moving object detection device includes: an image capturing unit with which a vehicle is equipped, and which is configured to obtain captured images by capturing views in a travel direction of the vehicle; a setting unit configured to set, for each of frames that are the captured images, a movement vanishing point at which movement of a stationary object in the captured images due to the vehicle traveling does not occur; a calculation unit configured to calculate, for each of unit regions of the captured images, a first motion vector indicating movement of an image in the unit region; and a detection unit configured to detect a moving object present in the travel direction, based on the movement vanishing points set by the setting unit and the first motion vectors calculated by the calculation unit.Type: ApplicationFiled: September 25, 2017Publication date: January 11, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuya TANAKA, Yoshihito OHTA, Kenji TAKITA
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Publication number: 20180012368Abstract: A moving object detection device includes: an image capturing unit with which a vehicle is equipped, and which is configured to obtain a captured image by capturing a view in a travel direction of the vehicle; a calculation unit configured to calculate, for each of first regions which are unit regions of the captured image, a first motion vector indicating movement of an image in the first region; an estimation unit configured to estimate, for each of one or more second regions which are unit regions each including first regions, a second motion vector using first motion vectors, the second motion vector indicating movement of a stationary object which has occurred in the captured image due to the vehicle traveling; and a detection unit configured to detect a moving object present in the travel direction, based on a difference between a first motion vector and a second motion vector.Type: ApplicationFiled: September 22, 2017Publication date: January 11, 2018Inventors: Yuya TANAKA, Yoshihito OHTA, Kenji TAKITA
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Publication number: 20170148148Abstract: The image processing device includes: a first motion vector detecting section detects a first motion vector indicating a motion from a subsequent frame to the target frame; a second motion vector detecting section detects a second motion vector indicating a motion from a previous frame to the target frame; a first moved image generating section generates data of a first moved image based on data of the subsequent frame and the first motion vector; a second moved image generating section generates data of a second moved image based on data of the previous frame and the second motion vector; and a corrected image generating section generates data of a corrected image, based on data of the target frame, and the data of the first and the second moved images.Type: ApplicationFiled: February 7, 2017Publication date: May 25, 2017Inventors: TETSURO OKUYAMA, YOSHIHITO OHTA, MASATAKA EJIMA
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Patent number: 9001895Abstract: An image display device includes: an interpolation phase generator that generates an interpolation phase on the basis of downsampling frame information representing a downsampling timing at which at least one frame image of the image signal is thinned, and an interpolation frame generator that generates an interpolation frame image corresponding to the interpolation phase. The interpolation phase generator generates the interpolation phase such that a phase distance between a first interpolation frame image from among a plurality of interpolation frame images within one period of downsampling periods, and a second interpolation frame image that follows the first interpolation frame image becomes equal to a phase distance between mutually adjacent interpolation frame images obtained when phase distances between a plurality of interpolation frame images are equalized within one period of the downsampling periods.Type: GrantFiled: February 16, 2012Date of Patent: April 7, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yoshihito Ohta, Tomoko Morita, Yutaka Nio
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Publication number: 20140362923Abstract: A video signal processing device performs signal processing on a baseband video signal decoded from a compressed video signal, and includes: an interpolation phase generating unit which obtains frame repeat information indicating positions of identical frames output sequentially, and generates interpolation phase information for generating an interpolation frame in which a motion between frames is interpolated; a motion vector estimating unit which estimates a motion vector between mutually different frames indicated by the frame repeat information; and an interpolation frame generating unit which generates the interpolation frame using the interpolation phase information and the motion vector, and outputs an output video signal having a frame rate equal to the frame rate of the baseband video signal.Type: ApplicationFiled: April 24, 2012Publication date: December 11, 2014Inventors: Yutaka Nio, Yoshihito Ohta
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Publication number: 20140112646Abstract: An image display device includes: an interpolation phase generator that generates an interpolation phase on the basis of downsampling frame information representing a downsampling timing at which at least one frame image of the image signal is thinned, and an interpolation frame generator that generates an interpolation frame image corresponding to the interpolation phase. The interpolation phase generator generates the interpolation phase such that a phase distance between a first interpolation frame image from among a plurality of interpolation frame images within one period of downsampling periods, and a second interpolation frame image that follows the first interpolation frame image becomes equal to a phase distance between mutually adjacent interpolation frame images obtained when phase distances between a plurality of interpolation frame images are equalized within one period of the downsampling periods.Type: ApplicationFiled: February 16, 2012Publication date: April 24, 2014Inventors: Yoshihito Ohta, Tomoko Morita, Yutaka Nio
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Patent number: 8432488Abstract: A video processing apparatus for converting frame rates of video signals includes: a video characteristic detection unit (29) that detects, from an input video signal, as characteristics of the video signal, whether or not the video signal is of a film material and/or whether or not character information is displayed in the video signal; and an interpolation phase calculation unit (21) to a merge unit (28) that constitute an image generation unit that uses the characteristics detected by the video characteristic detection unit, to generate an intermediate frame image having a phase different from the phase of an input frame image of the video signal. In accordance with the characteristics detected by the characteristic detection unit, the image generation unit moves the phase of the intermediate frame image to a phase different from a logical interpolation phase determined based on an input frame frequency and an output frame frequency.Type: GrantFiled: April 9, 2010Date of Patent: April 30, 2013Assignee: Panasonic CorporationInventors: Yoshihito Ohta, Katsuyuki Arimoto
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Patent number: 8432495Abstract: A motion compensator includes a video data selector, a video data editor, a vector reference data editor, a delay unit, a region data editor, and a delay unit. The video data editor outputs present frame video data and average video data. The vector reference data editor outputs previous compensation video data and present compensation video data. The region data editor outputs present frame region data, previous compensation region data, and present compensation region data. The video data selector selects one of four video data pieces based on the three pieces of region data and outputs the selected data to the video output unit.Type: GrantFiled: September 12, 2007Date of Patent: April 30, 2013Assignee: Panasonic CorporationInventors: Katsumi Terai, Yoshihito Ohta, Kazushi Nozawa
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Patent number: 8339442Abstract: An image conversion apparatus includes an image signal input unit repeatedly inputting an odd-numbered frame of a first parallax, an odd-numbered frame of a second parallax, an even-numbered frame of the first parallax, and an even-numbered frame of the second parallax, in this order; a frame memory storing the first and second parallax data having been input; a memory control unit alternately reading as field data (m+1) pieces (m is an integer of one or larger than one) of identical odd-numbered frames of the first parallax and m pieces of identical odd-numbered frames of the second parallax, and subsequently alternately reading as field data m pieces of identical even-numbered frames of the first parallax and (m+1) pieces of identical even-numbered frames of the second parallax; and an image output unit outputting the field data having been read.Type: GrantFiled: May 11, 2010Date of Patent: December 25, 2012Assignee: Panasonic CorporationInventors: Shingo Miyauchi, Yoshihito Ohta
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Publication number: 20120013797Abstract: A video processing apparatus for converting frame rates of video signals includes: a video characteristic detection unit (29) that detects, from an input video signal, as characteristics of the video signal, whether or not the video signal is of a film material and/or whether or not character information is displayed in the video signal; and an interpolation phase calculation unit (21) to a merge unit (28) that constitute an image generation unit that uses the characteristics detected by the video characteristic detection unit, to generate an intermediate frame image having a phase different from the phase of an input frame image of the video signal. In accordance with the characteristics detected by the characteristic detection unit, the image generation unit moves the phase of the intermediate frame image to a phase different from a logical interpolation phase determined based on an input frame frequency and an output frame frequency.Type: ApplicationFiled: April 9, 2010Publication date: January 19, 2012Inventors: Yoshihito Ohta, Katsuyuki Arimoto
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Publication number: 20110001874Abstract: When a frame rate is doubled by repeating video signals of respective frames twice and then resultant video signals are supplied to the overdrive circuitry, the number of cases where the effect of overdrive is not sufficiently obtained is likely to increase undesirably. A double-speed conversion section inserts, between video signals of an N-1th frame and an Nth frame following the N-1th frame which are input video signals, an N-1th interpolation frame video signal at a signal level same as that of the N-1th frame video signal, and outputs resultant video signals at a frame rate twice as high as that of the input video signals. An interpolation frame correcting section corrects the N-1th interpolation frame video signal outputted from the double-speed conversion section, in accordance with the signal levels of the N-1th frame video signal and of the Nth frame video signal.Type: ApplicationFiled: February 9, 2009Publication date: January 6, 2011Inventors: Yoshihito Ohta, Katsumi Terai
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Patent number: 7843473Abstract: Gamma converter circuits use first to third types of first and second gamma-characteristics to gamma-convert an input video signal. Selectors select one pair among three pairs of gamma-characteristics in accordance with a transmittance to be used for display, and selects one of the six gamma corrected outputs such that both a distribution area ratio of pixels driven by the video signal as gamma corrected by use of the first gamma-characteristic of the selected pair of gamma characteristics and a distribution area ratio of pixels driven by the video signal as ? corrected by use of the second gamma-characteristic of the selected pair of gamma-characteristics are equal to a distribution area ratio specified in advance for the selected pair of gamma-characteristics.Type: GrantFiled: October 7, 2004Date of Patent: November 30, 2010Assignee: Panasonic CorporationInventors: Katsuyuki Arimoto, Takahiro Kobayashi, Yoshihito Ohta, Keizo Matsumoto
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Publication number: 20100289873Abstract: An image conversion apparatus includes an image signal input unit repeatedly inputting an odd-numbered frame of a first parallax, an odd-numbered frame of a second parallax, an even-numbered frame of the first parallax, and an even-numbered frame of the second parallax, in this order; a frame memory storing the first and second parallax data having been input; a memory control unit alternately reading as field data (m+1) pieces (m is an integer of one or larger than one) of identical odd-numbered frames of the first parallax and m pieces of identical odd-numbered frames of the second parallax, and subsequently alternately reading as field data m pieces of identical even-numbered frames of the first parallax and (m+1) pieces of identical even-numbered frames of the second parallax; and an image output unit outputting the field data having been read.Type: ApplicationFiled: May 11, 2010Publication date: November 18, 2010Applicant: Panasonic CorporationInventors: Shingo MIYAUCHI, Yoshihito Ohta
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Publication number: 20090303392Abstract: A motion compensator includes a video data selector, a video data editor, a vector reference data editor, a delay unit, a region data editor, and a delay unit. The video data editor outputs present frame video data and average video data. The vector reference data editor outputs previous compensation video data and present compensation video data. The region data editor outputs present frame region data, previous compensation region data, and present compensation region data. The video data selector selects one of four video data pieces based on the three pieces of region data and outputs the selected data to the video output unit.Type: ApplicationFiled: September 12, 2007Publication date: December 10, 2009Applicant: PANASONIC CORPORATIONInventors: Katsumi Terai, Yoshihito Ohta, Kazushi Nozawa
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Patent number: 7450101Abstract: A signal converting section increases a transfer rate of an input image signal to be supplied to a liquid crystal panel and, at the same time, also inserts a non-image signal for applying a predetermined voltage to liquid-crystal cells in a space of the input image signal and supplies it as a picture-element signal to a source driver. To each picture cell, an input image signal and a non-image signal are sequentially written with positive or negative polarity. For all picture elements, after the input image signal is written, the non-image signal equal in polarity to the input image signal is always written. Furthermore, after the non-image signal is written, an image signal opposite in polarity to the non-image signal is always written. Thus, when an image is displayed on the liquid crystal panel in OCB mode, it is possible to prevent the occurrence of back transition and carry out image display evenly.Type: GrantFiled: November 23, 2005Date of Patent: November 11, 2008Assignee: Panasonic CorporationInventors: Katsuyuki Arimoto, Yoshihito Ohta, Takahiro Kobayashi, Taro Funamoto, Yoshinori Kobayashi, Kenji Nakao, Seiji Kawaguchi
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Publication number: 20060290626Abstract: A ?1A converter circuit 1a and a ?2A converter circuit 2a to a ?1C converter circuit 1c and a ?2C converter circuit 2c use first to third types of first and second ?-characteristics to ?-convert an input video signal IS. Selectors 3 to 5 select one pair among three pairs of ?-characteristics in accordance with a transmittance to be used for display, and selects one of the six ?-corrected outputs such that both a distribution area ratio of pixels driven by the video signal as ? corrected by use of the first ?-characteristic of the selected pair of ?-characteristics and a distribution area ratio of pixels driven by the video signal as ? corrected by use of the second ?-characteristic of the selected pair of ?-characteristics are equal to a distribution area ratio specified in advance for the selected pair of ?-characteristics.Type: ApplicationFiled: October 7, 2004Publication date: December 28, 2006Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Katsuyuki Arimoto, Takahiro Kobayashi, Yoshihito Ohta, Keizo Matsumoto
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Patent number: 7119785Abstract: A liquid crystal display apparatus is provided with a detecting section (108) for detecting a value of a parameter that causes fluctuations in a back transition occurrence condition; a calculating section (106) for determining, in accordance with the detection value of the detecting section, at least one of a ratio of an time period of applying a high voltage with respect to one frame period, the high voltage being applied to the liquid crystal panel in order to prevent back transition, a magnitude of the high voltage, and an applied voltage corresponding to white display; and a controller (104) for alternately outputting a video signal and a non-image signal for applying the high voltage and driving the liquid crystal panel on a condition in accordance with the determination result of the calculating section. With this, it is possible to always display video irrespectively of fluctuation in the back transition occurrence condition.Type: GrantFiled: October 18, 2002Date of Patent: October 10, 2006Assignee: Matsushita Electric Industrial Co., LTDInventors: Katsuyuki Arimoto, Yoshihito Ohta, Takahiro Kobayashi, Tsugio Murao, Taro Funamoto
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Patent number: 7106284Abstract: A liquid crystal display device includes a signal conversion part (101), a drive pulse generation part (102), a source driver (103), a gate driver (1704), and a multiplexer part (1706). In addition, between the source driver (103) and a display region part (1705) there is provided an intersection part (204) where, when source lines (S1, S2, S3, S4, . . . ) in the display region part are divided into groups each including four source lines, lines that correspond to two source lines (S2 and S3) located the second and third from an end in each group intersect each other. With the liquid crystal display device using the multiplexer part for switching a plurality of source lines in a time-sharing manner, the degradation of the display quality of pixels caused by, for example, an insufficient writing capability to the pixels is improved.Type: GrantFiled: March 26, 2003Date of Patent: September 12, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihito Ohta, Takahiro Kobayashi, Katsuyuki Arimoto, Yoshinori Kobayashi, Seiji Kawaguchi