Patents by Inventor Tomoo Yamakage

Tomoo Yamakage 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: 10334293
    Abstract: A multiplexing apparatus includes processing circuitry. The processing circuitry multiplexes a plurality of MMT packets including at least one MMT packet to which first output time information representing a first output time and presentation time information representing a presentation time are added. The processing circuitry rewrites the first output time information to second output time information representing a second output time. The processing circuitry adds a time necessary to multiplex the plurality of MMT packets to the presentation time represented by the presentation time information as a delay time.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: June 25, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Tanaka, Tomoo Yamakage
  • Patent number: 10264298
    Abstract: A multiplexing apparatus includes processing circuitry. The processing circuitry multiplexes a plurality of MMT packets including at least one MMT packet to which first output time information representing a first output time and presentation time information representing a presentation time are added. The processing circuitry rewrites the first output time information to second output time information representing a second output time. The processing circuitry adds a time necessary to multiplex the plurality of MMT packets to the presentation time represented by the presentation time information as a delay time.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: April 16, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Tanaka, Tomoo Yamakage
  • Patent number: 10225266
    Abstract: A transmission system includes a multiplexing apparatus and a message authentication code generating apparatus. The multiplexing apparatus multiplexes MMTP packets for video data and audio data to be transmitted to generate multiplexed data. The message authentication code generating apparatus generates a message authentication code in accordance with a message authentication scheme, using data except for at least either a time stamp or a packet counter in the MMTP packet included in the multiplexed data. The message authentication code generating apparatus adds the message authentication code to the MMTP packet.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 5, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuya Tanaka, Tomoo Yamakage
  • Publication number: 20180295391
    Abstract: A multiplexing apparatus includes processing circuitry. The processing circuitry multiplexes a plurality of MMT packets including at least one MMT packet to which first output time information representing a first output time and presentation time information representing a presentation time are added. The processing circuitry rewrites the first output time information to second output time information representing a second output time. The processing circuitry adds a time necessary to multiplex the plurality of MMT packets to the presentation time represented by the presentation time information as a delay time.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Inventors: Tatsuya Tanaka, Tomoo Yamakage
  • Publication number: 20180131956
    Abstract: A method of dividing an input image signal into pixel blocks, and performing inter-prediction on the divided pixel blocks. This method includes selecting predicted motion information from a motion information buffer storing motion information in an encoded region, and predicting motion information of an encoding target block by using the predicted motion information. The method further includes acquiring representative motion information from a plurality of items of motion information in an encoded region in accordance with first information indicating a method of selecting the predicted motion information, thereby obtaining only the representative motion information.
    Type: Application
    Filed: January 8, 2018
    Publication date: May 10, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taichiro Shiodera, Akiyuki Tanizawa, Tomoo Yamakage, Takeshi Chujoh
  • Patent number: 9900594
    Abstract: A method of dividing an input image signal into pixel blocks, and performing inter-prediction on the divided pixel blocks. This method includes selecting predicted motion information from a motion information buffer storing motion information in an encoded region, and predicting motion information of an encoding target block by using the predicted motion information. The method further includes acquiring representative motion information from a plurality of items of motion information in an encoded region in accordance with first information indicating a method of selecting the predicted motion information, thereby obtaining only the representative motion information.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: February 20, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taichiro Shiodera, Akiyuki Tanizawa, Tomoo Yamakage, Takeshi Chujoh
  • Publication number: 20180006747
    Abstract: A transmitting system includes a variable-length packet multiplexing apparatus and a transmission slotting apparatus. The variable-length packet multiplexing apparatus generates a variable-length packet. The transmission slotting apparatus stores the variable-length packet in slots forming transmission main signals. The transmission slotting apparatus includes a capacity calculator, an extractor, a remainder calculator, a selector, and a slot information multiplexer. The capacity calculator calculates a data capacity of the transmission main signals for one frame. The extractor extracts a byte number of the variable-length packet. The remainder calculator calculates a remaining capacity of the transmission main signals. The selector stores a predetermined data sequence in a region left in the slots, and outputs the slots storing the data sequence. The slot information multiplexer multiplexes slot information and the slots output by the selector.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 4, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoo YAMAKAGE, Tatsuya Tanaka, Yasumichi Hashi, Keita Iwami, Minoru Abe
  • Publication number: 20170373779
    Abstract: A transmitting system includes an outputting apparatus and a multiplexing apparatus. The outputting apparatus transmits MMTP packets to which an NTP short format timestamp is added. The multiplexing apparatus multiplexes the MMTP packets. The multiplexing apparatus includes an extractor, a controller, a determiner, a management information generator, a continuity determiner, and a transmission timing adjuster. The transmission timing adjuster writes, for adjustment of a transmission timing of an MMTP packet being close to an MMTP packet in which an NTP short format timestamp value is discontinuous, time information taking a leap second processing into consideration, to the NTP short format timestamp of the MMTP packet.
    Type: Application
    Filed: September 11, 2017
    Publication date: December 28, 2017
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Tomoo YAMAKAGE, Tatsuya Tanaka, Yasumichi Hashi, Keita Iwami
  • Publication number: 20170359592
    Abstract: According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi CHUJOH, Tomoo Yamakage
  • Patent number: 9843818
    Abstract: According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: December 12, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Chujoh, Tomoo Yamakage
  • Publication number: 20170187727
    Abstract: A transmission system includes a multiplexing apparatus and a message authentication code generating apparatus. The multiplexing apparatus multiplexes MMTP packets for video data and audio data to be transmitted to generate multiplexed data. The message authentication code generating apparatus generates a message authentication code in accordance with a message authentication scheme, using data except for at least either a time stamp or a packet counter in the MMTP packet included in the multiplexed data. The message authentication code generating apparatus adds the message authentication code to the MMTP packet.
    Type: Application
    Filed: March 9, 2017
    Publication date: June 29, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuya TANAKA, Tomoo YAMAKAGE
  • Publication number: 20170180747
    Abstract: According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
    Type: Application
    Filed: March 3, 2017
    Publication date: June 22, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi CHUJOH, Tomoo Yamakage
  • Patent number: 9672633
    Abstract: According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 6, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Chujoh, Tomoo Yamakage
  • Publication number: 20170048560
    Abstract: A multiplexing apparatus includes processing circuitry. The processing circuitry multiplexes a plurality of MMT packets including at least one MMT packet to which first output time information representing a first output time and presentation time information representing a presentation time are added. The processing circuitry rewrites the first output time information to second output time information representing a second output time. The processing circuitry adds a time necessary to multiplex the plurality of MMT packets to the presentation time represented by the presentation time information as a delay time.
    Type: Application
    Filed: September 19, 2016
    Publication date: February 16, 2017
    Inventors: Tatsuya Tanaka, Tomoo Yamakage
  • Publication number: 20160373247
    Abstract: An MMT transmission system includes first and second material output devices, first and second multiplexing devices, first and second encryption processing device, and a switching device. The first encryption processing device encrypts a first payload, except for a first MPU sequence number, of a first MMTP packet included in first multiplexed data output from the first multiplexing device. The second encryption processing device encrypts a second payload, except for a second MPU sequence number, of a second MMTP packet included in second multiplexed data output from the second multiplexing device. The switching device acquires a first MPU boarder from the first MPU sequence number, a second MPU boarder from the second MPU sequence number, and switches transmissions of the multiplexed data at these boarders.
    Type: Application
    Filed: September 2, 2016
    Publication date: December 22, 2016
    Inventor: Tomoo Yamakage
  • Patent number: 9135717
    Abstract: According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: September 15, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Chujoh, Tomoo Yamakage
  • Publication number: 20150229929
    Abstract: According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi CHUJOH, Tomoo Yamakage
  • Patent number: 8995524
    Abstract: An example image decoding apparatus and method involves acquiring encoded data including an image code sequence corresponding to a slice of a plurality of slices obtained by dividing a picture of a moving image and first timing information indicating a first time at which the slice is to be decoded and no underflow or overflow occurs in a first virtual reception buffer from which the image code sequence is output in a slice unit. The image code sequence is decoded on the basis of the first timing information.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 31, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichiro Koto, Tomoo Yamakage
  • Publication number: 20150043885
    Abstract: According to an embodiment, an information processor includes a first decoder, a controller and a display unit. The first decoder decodes the first video encoded data at a first speed to generate a first video. When the first video encoded data is received earlier than the second video encoded data, the controller controls the first speed so as to generate a period in which the first speed becomes lower than a ×1 speed until second time information of the second decoder catches up with first time information of the first decoder. When the first video encoded data is received earlier than the second video encoded data, the first video is displayed at the first speed until the second time information catches up with the first time information.
    Type: Application
    Filed: September 12, 2014
    Publication date: February 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Tomoo YAMAKAGE
  • Patent number: 8831095
    Abstract: A moving image encoding method includes outputting encoded data that comprises an image code sequence corresponding to slices of a moving image and first timing information indicating times at which the slices are to be decoded.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: September 9, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichiro Koto, Tomoo Yamakage