Patents by Inventor Mitsuyoshi Suzuki
Mitsuyoshi Suzuki 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).
-
Patent number: 8406455Abstract: A digital watermark embedding device and a digital watermark detecting device are obtained, which can realize stable digital watermark detection using fewer, and embed and detect a larger amount of digital watermark information with an identical number of pixels used for digital watermark embedding in a conventional technology.Type: GrantFiled: September 27, 2006Date of Patent: March 26, 2013Assignee: Mitsubishi Electric CorporationInventors: Koichi Magai, Hiroshi Ito, Ryousuke Fujii, Mitsuyoshi Suzuki, Kohtaro Asai, Tokumichi Murakami
-
Patent number: 8326114Abstract: A control unit (3) is provided for storing time information of data which are received for the first time by a receiving unit (1) in a memory (3a), and for, every time when the receiving unit (1) detects time information, acquiring the time information from the receiving unit (1), calculating the difference between the acquired time information and the time information of the first received data stored in the memory (3a), and, when the difference reaches a predetermined amount, outputting a command for starting a playback of data to a playback unit (4). The playback unit (4) starts a playback of the data stored in the storage unit (2) when the command for starting a playback of data is outputted from the control unit (3).Type: GrantFiled: November 29, 2007Date of Patent: December 4, 2012Assignee: Mitsubishi Electric CorporationInventors: Masayuki Baba, Hiroyuki Kurokawa, Mitsuyoshi Suzuki, Takehiko Hanada
-
Patent number: 8218812Abstract: A digital watermark embedding device according to the present invention includes: a watermark pattern generation part (4) which generates a watermark pattern varying in a time direction based on embedding information to be embedded in an input image to be processed; a synchronization pattern generation part (3) which outputs a fixed pattern for detecting synchronization as a watermark pattern; a pattern switching part (5) which selects between the watermark pattern output by the synchronization pattern generation part (3) and the watermark pattern output by the watermark pattern generation part (4) based on the input image (7a); and an embedding processing part (6) which adds the selected watermark pattern to each pixel value of the input image (7a) to generate an embedded image (7c) having a digital watermark embedded therein.Type: GrantFiled: May 28, 2007Date of Patent: July 10, 2012Assignee: Mitsubishi Electric CorporationInventors: Kazuo Sugimoto, Ryousuke Fujii, Hiroshi Ito, Mitsuyoshi Suzuki
-
Patent number: 8126194Abstract: The digital watermark embedding apparatus includes: a storing unit (15) for storing in advance at least one embedding function, at least one image converting program, and at least one image processing program that are required for a digital watermark embedding process, and storing in advance combination process information in which a process ID is assigned to each combination of those processing functions; an embedding process selecting unit (12) for selecting, as particular combination process information, one of a plurality of pieces of the combination process information; and an embedding unit (14) for obtaining from the storing unit (15) the embedding function, the image converting program, and the image processing program which are included in the selected particular combination process information, embedding particular embedding information into multimedia data, and generating determination information including the process ID corresponding to the particular combination process information.Type: GrantFiled: December 1, 2006Date of Patent: February 28, 2012Assignee: Mitsubishi Electric CorporationInventors: Ryousuke Fujii, Tokumichi Murakami, Koutarou Asai, Mitsuyoshi Suzuki, Hiroshi Itou, Koichi Magai
-
Patent number: 8000494Abstract: A digital watermark detecting device includes an extracting unit to extract pixels embedded as a digital watermark from an input image and to output an extracted pixel value row, a generating unit to generate a set of orthogonal patterns, a detecting unit to calculate a correlation using an integration result of the orthogonal patterns and the extracted pixel value row, to determine detected values corresponding to the orthogonal patterns and a standard deviation for detected values excluding a maximum detected value with a maximum absolute value from the calculated detected values, to calculate a quotient by dividing the maximum detected value by the standard deviation, a discriminating unit to output information corresponding to the result of comparison between a threshold parameter and the quotient, and a unit to convert the detected value inputted from the detecting unit into predetermined information, when the reliability of the detected values satisfies a standard.Type: GrantFiled: September 27, 2006Date of Patent: August 16, 2011Assignee: Mitsubishi Electric CorporationInventors: Koichi Magai, Hiroshi Ito, Ryousuke Fujii, Mitsuyoshi Suzuki, Kohtaro Asai, Tokumichi Murakami
-
Patent number: 8000394Abstract: Provided are a program, a method, and an apparatus for decoding coded data, capable of completely restoring an original stream when decoded data is coded again by causing a computer to function as: means for receiving an input of a signal coded by lossy compression and orthogonally projecting an optional real number vector on one convex aggregate X in a first vector space in which the decoded signal is present; means for judging convergence of convex projection and obtaining a real number vector x belonging to the aggregate X to output the same as a decoded signal when the convergence of the convex projection is judged; and means for orthogonally projecting an optional vector of the first vector space on one convex aggregate Y in a second vector space different from the first vector space when the convergence of the convex projection is not judged, and then repeating orthogonal projection on the aggregate X and the aggregate Y with the coded signal set as an initial value.Type: GrantFiled: March 8, 2004Date of Patent: August 16, 2011Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ito, Mitsuyoshi Suzuki, Minoru Wada, Ryousuke Fujii, Koichi Magai, Tomohiro Kimura
-
Patent number: 7933326Abstract: An encoded data modification device and the like are obtained which are capable of modifying a signal with a small delay. There is provided the encoded data modification device, including: an operational buffer that stores inputted encoded data formed of a plurality of encoded units; a decoder circuit that decodes the encoded data stored in the operational buffer; a modification circuit that modifies a first encoded unit of the decoded data and modifies following decoded encoded units according to the modification; an encoder circuit that re-encodes the modified data; an operational circuit that judges whether the modification is contained in the data in the buffer; and a write control circuit that rewrites the encoded data stored in the operational buffer to the data modified by the modification circuit and re-encoded by the encoder circuit when the operational circuit judges that the modification is contained in the data in the buffer.Type: GrantFiled: July 20, 2005Date of Patent: April 26, 2011Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki, Shigenori Takai
-
Patent number: 7925042Abstract: An information processing apparatus includes an additional information conversion means for converting a text of related information into additional information and outputting this additional information, and for outputting an amount of additional information for each point of interest, an embedding region allocating means for outputting region management information including the amount of additional information, for allocating an embedding region for the additional information in an original digital input image on the basis of image size information and the amount of additional information, and for outputting information on the embedding region as region information, and an information embedding means for embedding the region management information in a predetermined region in the original digital input image, and also embedding the additional information in the original digital input image on the basis of the region information to generate and output a watermarked image.Type: GrantFiled: July 15, 2004Date of Patent: April 12, 2011Assignee: Mitsubishi Electric CorporationInventors: Tomohiro Kimura, Mitsuyoshi Suzuki, Hiroshi Ito, Minoru Wada, Ryousuke Fujii, Koichi Magai
-
Patent number: 7769197Abstract: An electronic image into which an electronic watermark is to be embedded is divided into a plurality of image regions spatially, and pixels each having a property of being difficult to visually recognize a variation in a pixel value are extracted as adaptive pixels from each of the plurality of image regions. A variation between the pixel values of the adaptive pixels in one of the plurality of image regions and those of the adaptive pixels in an adjacent one of the plurality of image regions is produced, and the pixel values of the adaptive pixels of the plurality of image regions are varied in a time direction according to the value of an embedded bit set of the electronic watermark. An electronic-watermark-embedded image is then generated by making the variation in the pixel values of the adaptive pixels vary step by step at a boundary between the two of the plurality of image regions and/or in the time direction so that the variation makes a slow transition.Type: GrantFiled: February 14, 2005Date of Patent: August 3, 2010Assignees: Mitsubishi Electric Corporation, Nippon Hoso KyokaiInventors: Ryousuke Fujii, Hiroshi Ito, Kouichi Magai, Mitsuyoshi Suzuki, Minoru Wada, Go Ohtake, Seiichi Goshi
-
Publication number: 20100172539Abstract: A digital watermark embedding device according to the present invention includes: a watermark pattern generation part (4) which generates a watermark pattern varying in a time direction based on embedding information to be embedded in an input image to be processed; a synchronization pattern generation part (3) which outputs a fixed pattern for detecting synchronization as a watermark pattern; a pattern switching part (5) which selects between the watermark pattern output by the synchronization pattern generation part (3) and the watermark pattern output by the watermark pattern generation part (4) based on the input image (7a); and an embedding processing part (6) which adds the selected watermark pattern to each pixel value of the input image (7a) to generate an embedded image (7c) having a digital watermark embedded therein.Type: ApplicationFiled: May 28, 2007Publication date: July 8, 2010Inventors: Kazuo Sugimoto, Ryousuke Fujii, Hiroshi Ito, Mitsuyoshi Suzuki
-
Publication number: 20090285442Abstract: A digital watermark embedding device and a digital watermark detecting device are obtained, which can realize stable digital watermark detection using fewer, and embed and detect a larger amount of digital watermark information with an identical number of pixels used for digital watermark embedding in a conventional technology.Type: ApplicationFiled: September 27, 2006Publication date: November 19, 2009Applicant: Mitsubishi Electric CorporationInventors: Koichi Magai, Hiroshi Ito, Ryousuke Fujii, Mitsuyoshi Suzuki, Kohtaro Asai, Tokumichi Murakami
-
Publication number: 20090202103Abstract: The digital watermark embedding apparatus includes: a storing unit (15) for storing in advance at least one embedding function, at least one image converting program, and at least one image processing program that are required for a digital watermark embedding process, and storing in advance combination process information in which a process ID is assigned to each combination of those processing functions; an embedding process selecting unit (12) for selecting, as particular combination process information, one of a plurality of pieces of the combination process information; and an embedding unit (14) for obtaining from the storing unit (15) the embedding function, the image converting program, and the image processing program which are included in the selected particular combination process information, embedding particular embedding information into multimedia data, and generating determination information including the process ID corresponding to the particular combination process information.Type: ApplicationFiled: December 1, 2006Publication date: August 13, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Ryousuke Fujii, Tokumichi Murakami, Koutarou Asai, Mitsuyoshi Suzuki, Hiroshi Itou, Koichi Magai
-
Publication number: 20090136084Abstract: Provided is a digital watermark detecting device for improving the accuracy of reliability judgment of detected information thereby to prevent misdetection.Type: ApplicationFiled: September 27, 2006Publication date: May 28, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Koichi Magai, Hiroshi Ito, Ryousuke Fujii, Mitsuyoshi Suzuki, Kohtaro Asai, Tokumichi Murakami
-
Patent number: 7479996Abstract: To obtain a noise eliminating device which is capable of efficiently separating a noise component from an image component to attenuate only the noise component.Type: GrantFiled: September 2, 2005Date of Patent: January 20, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki
-
Publication number: 20080285789Abstract: An information processing apparatus includes an additional information conversion means for converting a text of related information into additional information and outputting this additional information, and for outputting an amount of additional information for each point of interest, an embedding region allocating means for outputting region management information including the amount of additional information, for allocating an embedding region for the additional information in an original digital input image on the basis of image size information and the amount of additional information, and for outputting information on the embedding region as region information, and an information embedding means for embedding the region management information in a predetermined region in the original digital input image, and also embedding the additional information in the original digital input image on the basis of the region information to generate and output a watermarked image.Type: ApplicationFiled: July 15, 2004Publication date: November 20, 2008Applicant: Mitsubishi Electric CorporationInventors: Tomohiro Kimura, Mitsuyoshi Suzuki, Hiroshi Ito, Minoru Wada, Ryousuke Fujii, Koichi Magai
-
Publication number: 20080273741Abstract: An electronic image into which an electronic watermark is to be embedded is divided into a plurality of image regions spatially, and pixels each having a property of being difficult to visually recognize a variation in a pixel value are extracted as adaptive pixels from each of the plurality of image regions. A variation between the pixel values of the adaptive pixels in one of the plurality of image regions and those of the adaptive pixels in an adjacent one of the plurality of image regions is produced, and the pixel values of the adaptive pixels of the plurality of image regions are varied in a time direction according to the value of an embedded bit set of the electronic watermark. An electronic-watermark-embedded image is then generated by making the variation in the pixel values of the adaptive pixels vary step by step at a boundary between the two of the plurality of image regions and/or in the time direction so that the variation makes a slow transition.Type: ApplicationFiled: February 14, 2005Publication date: November 6, 2008Inventors: Ryousuke Fujii, Hiroshi Ito, Kouichi Magai, Mitsuyoshi Suzuki, Minoru Wada, Go Ohtake, Seiichi Goshi
-
Publication number: 20080131074Abstract: A control unit (3) is provided for storing time information of data which are received for the first time by a receiving unit (1) in a memory (3a), and for, every time when the receiving unit (1) detects time information, acquiring the time information from the receiving unit (1), calculating the difference between the acquired time information and the time information of the first received data stored in the memory (3a), and, when the difference reaches a predetermined amount, outputting a command for starting a playback of data to a playback unit (4). The playback unit (4) starts a playback of the data stored in the storage unit (2) when the command for starting a playback of data is outputted from the control unit (3).Type: ApplicationFiled: November 29, 2007Publication date: June 5, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masayuki Baba, Hiroyuki Kurokawa, Mitsuyoshi Suzuki, Takehiko Hanada
-
Publication number: 20070122044Abstract: Provided are a program, a method, and an apparatus for decoding coded data, capable of completely restoring an original stream when decoded data is coded again by causing a computer to function as: means for receiving an input of a signal coded by lossy compression and orthogonally projecting an optional real number vector on one convex aggregate X in a first vector space in which the decoded signal is present; means for judging convergence of convex projection and obtaining a real number vector x belonging to the aggregate X to output the same as a decoded signal when the convergence of the convex projection is judged; and means for orthogonally projecting an optional vector of the first vector space on one convex aggregate Y in a second vector space different from the first vector space when the convergence of the convex projection is not judged, and then repeating orthogonal projection on the aggregate X and the aggregate Y with the coded signal set as an initial value.Type: ApplicationFiled: March 8, 2004Publication date: May 31, 2007Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Hiroshi Ito, Mitsuyoshi Suzuki, Minoru Wada, Ryousuke Fujii, Koichi Magai, Tomohiro Kimura
-
Publication number: 20060236130Abstract: An encoded data modification device and the like are obtained which are capable of modifying a signal with a small delay. There is provided the encoded data modification device, including: an operational buffer that stores inputted encoded data formed of a plurality of encoded units; a decoder circuit that decodes the encoded data stored in the operational buffer; a modification circuit that modifies a first encoded unit of the decoded data and modifies following decoded encoded units according to the modification; an encoder circuit that re-encodes the modified data; an operational circuit that judges whether the modification is contained in the data in the buffer; and a write control circuit that rewrites the encoded data stored in the operational buffer to the data modified by the modification circuit and re-encoded by the encoder circuit when the operational circuit judges that the modification is contained in the data in the buffer.Type: ApplicationFiled: July 20, 2005Publication date: October 19, 2006Inventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki, Shigenori Takai
-
Publication number: 20060232689Abstract: To obtain a noise eliminating device which is capable of efficiently separating a noise component from an image component to attenuate only the noise component.Type: ApplicationFiled: September 2, 2005Publication date: October 19, 2006Inventors: Hiroshi Ito, Koichi Magai, Mitsuyoshi Suzuki