Patents by Inventor Yusuke Itani
Yusuke Itani 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: 9894375Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.Type: GrantFiled: February 4, 2015Date of Patent: February 13, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
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Publication number: 20170194000Abstract: A speech recognition device: transmits an input voice to a server; receives a first speech recognition result that is a result from speech recognition by the server on the transmitted input voice; performs speech recognition on the input voice to obtain a second speech recognition result; refers to speech rules each representing a formation of speech elements for the input voice, to determine the speech rule matched to the second speech recognition result; determines from the correspondence relationships among presence/absence of the first speech recognition result, presence/absence of the second speech recognition result and presence/absence of the speech element that forms the speech rule, a speech recognition state indicating the speech element whose speech recognition result is not obtained; generates according to the determined speech recognition state, a response text for inquiring about the speech element whose speech recognition result is not obtained; and outputs that text.Type: ApplicationFiled: July 17, 2015Publication date: July 6, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yusuke ITANI, Isamu OGAWA
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Patent number: 9560365Abstract: An intra-scene and inter-scene adaptive coding unit 6 converts an MPEG-2 video bit stream into a slave stream by using both coded data which is included in the coded data about scene video units in a master stream recorded in a data recording unit 2 and for which alternative coded data to be used for prediction reference has not been retrieved by an inter-scene prediction determining unit 5, and coded data retrieved by the inter-scene prediction determining unit 5 for the prediction reference.Type: GrantFiled: February 28, 2013Date of Patent: January 31, 2017Assignee: Mitsubishi Electric CorporationInventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Yoshihisa Yamada, Daiki Kudo, Hirofumi Nishikawa, Junichi Kitsuki, Koichi Takeuchi
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Patent number: 9503718Abstract: Disclosed is an image decoding method including a step of variable-length-decoding coded data multiplexed into a bitstream to acquire compressed data associated with a coding block, a reference image restriction flag indicating whether or not to restrict a significant reference image area which is an area on a reference image which can be used for the motion-compensated prediction, and motion information and a motion-compensated prediction step of carrying out a motion-compensated prediction process on the coding block on the basis of the motion information to generate a prediction image, in which the motion-compensated prediction step includes a step of when the prediction image includes a pixel located outside the significant reference image area, carrying out a predetermined extending process to generate the prediction image on the basis of the reference image restriction flag by using the motion information.Type: GrantFiled: June 11, 2012Date of Patent: November 22, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto, Tokumichi Murakami
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Patent number: 9369730Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.Type: GrantFiled: July 21, 2011Date of Patent: June 14, 2016Assignee: Mitsubishi Electric CorporationInventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
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Publication number: 20150304677Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.Type: ApplicationFiled: February 19, 2015Publication date: October 22, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
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Publication number: 20150281725Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.Type: ApplicationFiled: February 4, 2015Publication date: October 1, 2015Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
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Publication number: 20150245035Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.Type: ApplicationFiled: February 4, 2015Publication date: August 27, 2015Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
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Publication number: 20150245032Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.Type: ApplicationFiled: February 4, 2015Publication date: August 27, 2015Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
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Publication number: 20150245057Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.Type: ApplicationFiled: February 4, 2015Publication date: August 27, 2015Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
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Publication number: 20150229946Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.Type: ApplicationFiled: February 19, 2015Publication date: August 13, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
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Publication number: 20150229949Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.Type: ApplicationFiled: February 19, 2015Publication date: August 13, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
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Publication number: 20150195582Abstract: Since time hierarchically encoded video data needs to include video data of a basic hierarchical layer, and video data cannot be generated in which a frame belonging to an upper hierarchical layer is only encoded, even in a case in which only a part of frames is processed, a basic hierarchical layer frame is needed to be included, and thus, there has been a problem that video data in which only the frame belonging to the upper hierarchical layer is encoded cannot be separately processed. In the present invention, a variable length encoding unit is disposed which encodes, for each sequence, a basic hierarchical layer existence flag showing whether or not a basic hierarchical layer is included in the sequence.Type: ApplicationFiled: May 27, 2013Publication date: July 9, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshimi Moriya, Kazuo Sugimoto, Akira Minezawa, Shunichi Sekiguchi, Norimichi Hiwasa, Yusuke Itani, Ryoji Hattori
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Patent number: 9036713Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion, vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.Type: GrantFiled: December 4, 2014Date of Patent: May 19, 2015Assignee: Mitsubishi Electric CorporationInventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Akira Minezawa, Yoshiaki Kato
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Publication number: 20150085937Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion, vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.Type: ApplicationFiled: December 4, 2014Publication date: March 26, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
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Publication number: 20150043630Abstract: An image decoding device and an image decoding method are disclosed. The decoding device includes: a variable length decoder to variable-length-decode an inputted encoded bit stream to obtain a parameter for prediction signal generation, a compressed difference image, and filters; and a filtering processor to carry out a filtering process on a decoded image acquired by adding a prediction image and a difference image, wherein the prediction image is generated by using the parameter for prediction signal generation, and the difference image is acquired by decoding the compressed difference image, wherein the variable length decoder variable-length-decodes class identification information for a block in the decoded image, and wherein the filtering processor refers to the class identification information for the block to determine a class for the block, and carries out a filtering process on the block based on the determined class and the filters.Type: ApplicationFiled: October 15, 2014Publication date: February 12, 2015Applicant: Mitsubishi Electric CorporationInventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Yoshimi MORIYA, Norimichi HIWASA, Shuichi YAMAGISHI, Yoshihisa YAMADA, Yoshiaki KATO, Kohtaro ASAI, Tokumichi MURAKAMI
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Patent number: 8948243Abstract: Disclosed is an image encoding device which is constructed in such a way as to include an encoding mode determining unit 4 for evaluating the degree of efficiency of encoding of a difference image A which is the difference between an image of a macroblock to be encoded, and a prediction image A generated by a motion-compensated prediction unit 2 in a motion prediction mode A, and also evaluating the degree of efficiency of encoding of a difference image B which is the difference between the image of the macroblock to be encoded, and a prediction image B generated by the motion-compensated prediction unit 2 in a motion prediction mode B, and for selecting a difference image having a higher degree of encoding efficiency.Type: GrantFiled: March 7, 2011Date of Patent: February 3, 2015Assignee: Mitsubishi Electric CorporationInventors: Shunichi Sekiguchi, Yusuke Itani, Kazuo Sugimoto, Yoshihisa Yamada
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Publication number: 20150023420Abstract: A loop filter unit 11 carries out a class classification of a local decoded image generated by an adding unit 9 into one class for each coding block having a largest size determined by an encoding controlling unit 2 and also designs a filter that compensates for a distortion piggybacked for each local decoded image belonging to each class, and also carries out a filtering process on the above-mentioned local decoded image by using the filter. A variable length encoding unit 13 encodes, as filter parameters, the filter designed by the loop filter unit 11 and used for the local decoded image belonging to each class, and a class number of each largest coding block.Type: ApplicationFiled: January 9, 2013Publication date: January 22, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akira Minezawa, Kazuo Sugimoto, Kazuyuki Miyazawa, Yusuke Itani, Ryoji Hattori, Yoshimi Moriya, Norimichi Hiwasa, Shunichi Sekiguchi, Tokumichi Murakami
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Patent number: 8934548Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal 5 does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.Type: GrantFiled: May 27, 2010Date of Patent: January 13, 2015Assignee: Mitsubishi Electric CorporationInventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Akira Minezawa, Yoshiaki Kato
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Publication number: 20140376613Abstract: An intra-scene and inter-scene adaptive coding unit 6 converts an MPEG-2 video bit stream into a slave stream by using both coded data which is included in the coded data about scene video units in a master stream recorded in a data recording unit 2 and for which alternative coded data to be used for prediction reference has not been retrieved by an inter-scene prediction determining unit 5, and coded data retrieved by the inter-scene prediction determining unit 5 for the prediction reference.Type: ApplicationFiled: February 28, 2013Publication date: December 25, 2014Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Yoshihisa Yamada, Daiki Kudo, Hirofumi Nishikawa, Junichi Kitsuki, Koichi Takeuchi