Patents by Inventor Yusuke Yatabe

Yusuke Yatabe 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).

  • Publication number: 20110064135
    Abstract: A compressed-image noise removal device includes a decoder unit for decoding a digital-image-compressed stream, an information holding unit for holding sub information by the amount of a plurality of blocks, the sub information being decoded by a VLD unit, a noise judgment unit for making a judgment on noise removal of a display image generated by the decoder unit, and the information holding unit, a noise removal unit for executing the noise removal of a block whose noise removal has been judged to be executed by the noise judgment unit, using image data outputted from an inverse quantization unit, motion compensation data outputted from a motion compensation unit, and the sub information held in the information holding unit, and a display-image holding unit for holding, as a display image, an output image of the noise removal unit if the noise removal has been judged to be executed by the noise judgment unit, or the output of the decoder unit if the noise removal has been judged not to be executed thereby.
    Type: Application
    Filed: June 8, 2009
    Publication date: March 17, 2011
    Inventors: Yusuke Yatabe, Hironori Komi
  • Patent number: 7865024
    Abstract: An encoding apparatus includes a first encoder for encoding inputted picture information at a first rate or first resolution, and a second encoder for encoding the inputted picture information at a second rate lower than the first rate or at second resolution lower than the first resolution, in which when the second encoder encodes picture information, the second encoder encodes the picture information by use of encoding information of picture information in the first encoder corresponding to the picture information, and the encoding apparatus outputs the picture information encoded by the first encoder and the second encoder, respectively, thereby the second encoder executing the encoding by using encoding information of the first encoder.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: January 4, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yusuke Yatabe, Hironori Komi, Masahiro Fujimoto, Masaru Takahashi
  • Publication number: 20100283869
    Abstract: The time required to transcode an encoded image signal to an image signal encoded by a different encoding method is reduced. Disclosed herein is a transcoder comprising: picture selector 4 which extracts specific types of pictures (I- and P-pictures) from a first image signal (MPEG2 stream) and generates a subset of the first image signal; a first decoder 5 which decodes the subset image signal; and a first encoder 7 which encodes the decoded image signal to a second image signal (MPEG4 stream). The picture selector 4 uses the extracted pictures to generate the subset image signal with a reduced effective length.
    Type: Application
    Filed: July 20, 2010
    Publication date: November 11, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Daisuke Yoshida, Hironori Komi, Yusuke Yatabe
  • Publication number: 20100195981
    Abstract: The invention provides an effective means that realizes a long-hour recording and multi-channel simultaneous recording of TV broadcast programs without sacrificing the picture quality in reproduction. The invention also enhances user-friendliness in recording multiple channels. The invention provides a transcoder for the digital broadcast, utilizes program information during recording, and adaptively controls the recording bit rate in correspondence with the maximum transfer rate of a record medium.
    Type: Application
    Filed: April 6, 2010
    Publication date: August 5, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Hironori Komi, Yusuke Yatabe
  • Publication number: 20090297051
    Abstract: An image processing apparatus is configured to have units for compressing and expanding image data and an arbitrating unit for arbitrating control units for executing image processing so that the compressing and expanding units are located between the arbitrating unit and the control units respectively. The apparatus further includes the circuits for compressing and expanding the image data in a reversible manner and a nonreversible manner so that the compressing and expanding manner may be switched according to the image processing condition. When treating a large amount of image data, this configuration makes it possible to reduce the number of accesses to memory and make effective use of a bandwidth, thereby being able to reduce the power consumption. Since the bandwidth is reduced and the random access to memory is made possible, more image processing capabilities may be provided so that the operability of this apparatus is enhanced.
    Type: Application
    Filed: April 24, 2009
    Publication date: December 3, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Tomoyuki Nonaka, Hironori Komi, Keisuke Inata, Yusuke Yatabe, Mitsuhiro Okada
  • Publication number: 20090034625
    Abstract: The present invention relates to an image decoder which implements high speed image decoding with a low cost and simple configuration. By a stream dividing module, an input video stream is divided in units of frames as a plurality of frame rows for distribution. Each of plural decoders generates decoded images by decoding a distributed frame row. Of the decoded images generated by the decoders, reference images to be referred to when a subsequent frame is decoded is stored in a reference image frame memory. A timing control module receives information about stream distribution from the stream dividing module and controls the respective timings of decoding frames distributed to the decoders.
    Type: Application
    Filed: March 31, 2008
    Publication date: February 5, 2009
    Inventors: Hironori Komi, Yusuke Yatabe, Keisuke Inata, Mitsuhiro Okada
  • Publication number: 20090028447
    Abstract: When a motion image is to be compressed, the present invention divides a high-resolution still image into image segments to perform a motion image encoding process on each image segment. In this instance, the importance of each image segment and the relativity of each image segment with another image segment are computed. The image segments are then aligned in the order of importance to determine a picture type for motion image encoding in accordance with the computed relativity. Encoding is performed in accordance with a determined encoding sequence and picture type. Further, the rate control bit allocation amount for motion image encoding is increased for highly important image segments. Therefore, the present invention makes it possible to exhibit a high overall image compression efficiency while avoiding image quality deterioration in an important portion of a still image by using a motion image compression technology for still image compression.
    Type: Application
    Filed: March 31, 2008
    Publication date: January 29, 2009
    Inventors: Yusuke Yatabe, Hirotomo Sai
  • Publication number: 20080205510
    Abstract: An apparatus by which a user can easily set a parameter for conversion when a compression encoding system of video stream is converted is provided. A particular period in a first video stream is repeatedly reproduced to convert the reproduced portion into a second video stream in real time. At that time, the user checks the image quality after conversion on a preview screen and sets a desired conversion parameter. A local decode image is output to the preview screen. Thus, the circuit configuration is simplified.
    Type: Application
    Filed: January 29, 2008
    Publication date: August 28, 2008
    Inventors: Hironori Komi, Yusuke Yatabe, Masaru Takahashi
  • Publication number: 20080111897
    Abstract: An encoding apparatus includes a first encoder for encoding inputted picture information at a first rate or first resolution, and a second encoder for encoding the inputted picture information at a second rate lower than the first rate or at second resolution lower than the first resolution, in which when the second encoder encodes picture information, the second encoder encodes the picture information by use of encoding information of picture information in the first encoder corresponding to the picture information, and the encoding apparatus outputs the picture information encoded by the first encoder and the second encoder, respectively, thereby the second encoder executing the encoding by using encoding information of the first encoder.
    Type: Application
    Filed: December 5, 2007
    Publication date: May 15, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Yusuke Yatabe, Hironori Komi, Masahiro Fujimoto, Masaru Takahashi
  • Patent number: 7346271
    Abstract: An apparatus by which a user can easily set a parameter for conversion when a compression encoding system of video stream is converted is provided. A particular period in a first video stream is repeatedly reproduced to convert the reproduced portion into a second video stream in real time. At that time, the user checks the image quality after conversion on a preview screen and sets a desired conversion parameter. A local decode image is output to the preview screen. Thus, the circuit configuration is simplified.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: March 18, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Hironori Komi, Yusuke Yatabe, Masaru Takahashi
  • Patent number: 7317837
    Abstract: An encoding apparatus includes a first encoder for encoding inputted picture information at a first rate or first resolution, and a second encoder for encoding the inputted picture information at a second rate lower than the first rate or at second resolution lower than the first resolution, in which when the second encoder encodes picture information, the second encoder encodes the picture information by use of encoding information of picture information in the first encoder corresponding to the picture information, and the encoding apparatus outputs the picture information encoded by the first encoder and the second encoder, respectively, thereby the second encoder executing the encoding by using encoding information of the first encoder.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: January 8, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Yusuke Yatabe, Hironori Komi, Masahiro Fujimoto, Masaru Takahashi
  • Publication number: 20070286284
    Abstract: The present invention provides an image coding apparatus and an image coding method for reducing arithmetic processing while keeping a high compression ratio. A coding process necessary for the bi-prediction motion search can be effectively reduced by determining a block size for a bi-prediction motion search or a center position for a motion search on the basis of a result of a motion search of a unidirectional prediction. Further, a compression ratio can be also kept as high as possible, because the block size or the center position are obtained on the basis of the result of the motion search of the unidirectional prediction.
    Type: Application
    Filed: March 23, 2007
    Publication date: December 13, 2007
    Inventors: Hiroaki Ito, Tomokazu Murakami, Isao Karube, Taku Nakamura, Yusuke Yatabe
  • Publication number: 20070076794
    Abstract: In a transcoder that decodes and encodes a motion picture stream, a highly compressed motion picture stream cannot be obtained if the same corresponding frame is referenced for coding purposes in a situation where an intraframe coding mode, in which an unconverted stream is not provided with vector information, is used and in a situation where an interframe predictive coding mode, in which the unconverted stream is provided with vector information, is used. Further, if an additional frame is referenced after searching for the corresponding frame, the circuit scale and power consumption increase.
    Type: Application
    Filed: March 6, 2006
    Publication date: April 5, 2007
    Inventors: Yusuke Yatabe, Hironori Komi
  • Publication number: 20060222326
    Abstract: The invention provides an effective means that realizes a long-hour recording and multi-channel simultaneous recording of TV broadcast programs without sacrificing the picture quality in reproduction. The invention also enhances user-friendliness in recording multiple channels. The invention provides a transcoder for the digital broadcast, utilizes program information during recording, and adaptively controls the recording bit rate in correspondence with the maximum transfer rate of a record medium.
    Type: Application
    Filed: August 18, 2005
    Publication date: October 5, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Hironori Komi, Yusuke Yatabe
  • Publication number: 20060017980
    Abstract: A playlist creating apparatus is provided which allows a user to select desired digital images from a plurality of programs and use the desired digital images to simply create a playlist or to select a digital image in dubbing it to another recording medium. One image data that agrees in terms of a specific condition with another image data selected from recorded image data is added to an image screen as a selective candidate for display.
    Type: Application
    Filed: February 9, 2005
    Publication date: January 26, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Yusuke Yatabe, Hironori Komi
  • Publication number: 20050281543
    Abstract: A moving picture recording system includes a communicable moving picture recording apparatus and a mobile terminal. In this case, the communicable moving picture recording apparatus has a recording module which records a moving picture in a recording medium and a transmitting module which transmits information indicating an in-recording state, while the recording module is recording the moving picture in the recording medium. The mobile terminal has a receiving module which receives the information indicating the in-recording state and an informing module which informs a user that the communicable moving picture recording apparatus is recording a moving pictures when the information indicating the in-recording state is received.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 22, 2005
    Inventors: Masaru Takahashi, Yusuke Yatabe
  • Publication number: 20050047501
    Abstract: The time required to transcode an encoded image signal to an image signal encoded by a different encoding method is reduced. Disclosed herein is a transcoder comprising: a picture selector 4 which extracts specific types of pictures (I- and P- pictures) from a first image signal (MPEG2 stream) and generates a subset of the first image signal; a first decoder 5 which decodes the subset image signal; and a first encoder 7 which encodes the decoded image signal to a second image signal (MPEG4 stream). The picture selector 4 uses the extracted pictures to generate the subset image signal with a reduced effective length.
    Type: Application
    Filed: January 30, 2004
    Publication date: March 3, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Daisuke Yoshida, Hironori Komi, Yusuke Yatabe
  • Publication number: 20040234145
    Abstract: An encoding apparatus includes a first encoder for encoding inputted picture information at a first rate or first resolution, and a second encoder for encoding the inputted picture information at a second rate lower than the first rate or at second resolution lower than the first resolution, in which when the second encoder encodes picture information, the second encoder encodes the picture information by use of encoding information of picture information in the first encoder corresponding to the picture information, and the encoding apparatus outputs the picture information encoded by the first encoder and the second encoder, respectively, thereby the second encoder executing the encoding by using encoding information of the first encoder.
    Type: Application
    Filed: September 5, 2003
    Publication date: November 25, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Yusuke Yatabe, Hironori Komi, Masahiro Fujimoto, Masaru Takahashi
  • Publication number: 20040174934
    Abstract: An apparatus by which a user can easily set a parameter for conversion when a compression encoding system of video stream is converted is provided. A particular period in a first video stream is repeatedly reproduced to convert the reproduced portion into a second video stream in real time. At that time, the user checks the image quality after conversion on a preview screen and sets a desired conversion parameter. A local decode image is output to the preview screen. Thus, the circuit configuration is simplified.
    Type: Application
    Filed: May 20, 2003
    Publication date: September 9, 2004
    Inventors: Hironori Komi, Yusuke Yatabe, Masaru Takahashi
  • Publication number: 20040109673
    Abstract: A recording and reproducing apparatus and method are disclosed, which positively and easily realize the navigation for a desired image. At least a still picture for navigation is produced from an input moving picture, and a moving picture and the still picture are recorded in a recording media. At the time of navigation, the still pictures for navigation are collectively read and displayed in a list. A corresponding moving picture is read from the recording media based on the still picture selected by the user, and displayed in superposition on the still picture on a navigation screen. The simultaneous display of at least a still picture and a moving picture on the navigation screen realizes a positive navigation.
    Type: Application
    Filed: May 20, 2003
    Publication date: June 10, 2004
    Inventors: Yusuke Yatabe, Masaru Takahashi