Patents by Inventor Takeshi Nagai

Takeshi Nagai 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).

  • VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS
    Publication number: 20070036216
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 15, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS
    Publication number: 20070036221
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 15, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Pressure-sensitive sensor, object detecting device, and opening-closing device
    Patent number: 7174790
    Abstract: An object detecting device can prevent a seizure of an object between an opening and an opening-closing unit for opening and closing the opening. The object detecting device includes a pressure-sensitive sensor disposed at one of the opening and the opening-closing unit, and judging means for judging the contact of the object with the pressure-sensitive sensor on the basis of an output signal of the pressure-sensitive sensor. The pressure-sensitive sensor includes pressure-sensitive means for generating an output signal depending on deformation, and support means for supporting the pressure-sensitive means at the one of the opening and the opening-closing unit, the support means including a vibration damping portion for damping vibration propagated to the pressure-sensitive means.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 13, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Ogino, Naofumi Nakatani, Koji Yoshino, Takeshi Nagai, Narutoshi Kanazawa, Masahiko Ito, Yuko Fujii
  • VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS
    Publication number: 20070030910
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 8, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS
    Publication number: 20070030908
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 8, 2007
    Inventors: Shinichiro KOTO, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS
    Publication number: 20070030907
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 8, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS
    Publication number: 20070030909
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 8, 2007
    Inventors: Shinichiro KOTO, Takeshi CHUJOH, Yoshihiro KIKUCHI, Takeshi NAGAI, Wataru Asano
  • Video encoding method and apparatus and video decoding method and apparatus
    Publication number: 20070019727
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: January 25, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Video encoding method and apparatus and video decoding method and apparatus
    Publication number: 20070019736
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: January 25, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Video encoding method and apparatus and video decoding method and apparatus
    Publication number: 20070019728
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: January 25, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Video encoding method and apparatus and video decoding method and apparatus
    Publication number: 20070019737
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: January 25, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Video encoding method and apparatus and video decoding method and apparatus
    Publication number: 20070019735
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: January 25, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Video encoding method and apparatus and video decoding method and apparatus
    Publication number: 20070014366
    Abstract: A video picture is encoded by adaptively switching between the operation of using a plurality of decoded video signals as reference frames and generating a predictive macroblock picture from a plurality of reference frames for each macroblock, the operation of extracting reference macroblocks from a plurality of reference frames and using the average value of the macroblocks as a predictive macroblock picture, and the operation of extracting reference macroblocks from a plurality of reference frames and generating a predictive macroblock picture by linear extrapolation or linear interpolation in accordance with the inter-frame distances between the reference frames and a to-be-encoded frame.
    Type: Application
    Filed: September 27, 2006
    Publication date: January 18, 2007
    Inventors: Shinichiro Koto, Takeshi Chujoh, Yoshihiro Kikuchi, Takeshi Nagai, Wataru Asano
  • Mobile terminal
    Publication number: 20060256785
    Abstract: An efficient retransmission control method, whereby a wasteful retransmission request and retransmission of a packet are not carried out when packet loss occurs. A receiving unit sends the received retransmission request information to a retransmission determining unit. When receiving the retransmission request information, the retransmission determining unit reads out refresh data time information, packet type information of the packet for which a retransmission request is issued, and the time information thereof from a packet information monitoring unit. The retransmission determining unit makes a determination as to whether or not to issue a retransmission request using the read-out refresh data time information, packet type information of the packet for which a retransmission request is issued, and the time information thereof.
    Type: Application
    Filed: October 28, 2005
    Publication date: November 16, 2006
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi Nagai, Tatsuya Zettsu, Satoshi Akimoto, Tatsunori Saito, Yasushi Unoki
  • Video coding apparatus and video decoding apparatus
    Patent number: 7124429
    Abstract: A video decoding apparatus comprises a demultiplexer which demultiplexes multi-bit streams to extract a coded bit stream, a decoder which decodes the coded bit stream, a sync signal detector which detects the sync information from the bit stream, and informs the decoder of the sync information, an error checker which checks an error based on output information of the decoder, and an important information construction device which constructs the important information from header information output from the decoder, and informs the decoder of the important information.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: October 17, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Nagai, Yoshihiro Kikuchi, Tadaaki Masuda
  • Coding apparatus and decoding apparatus for transmission/storage of information
    Publication number: 20060218473
    Abstract: An output coding apparatus includes a coder for coding an inputted bitstream to an error correction and/or detection code composed of information bits and check bits; and a bitstream assembling section for assembling an outputted bitstream by inserting a synchronization code at any one of a plurality of synchronization code insertion positions previously determined in the outputted bitstream, arranging the information bits at any desired positions of the bitstream, and by arranging the check bits at positions other than the synchronization code insertion positions in the bitstream. Therefore, when the coding apparatus is combined with a resynchronization method using both an error correction and/or detection code and a synchronization code, it is possible to solve a problem caused by pseudo-synchronization or synchronization-loss pull-out or step-out due to erroneous detection of the synchronization code.
    Type: Application
    Filed: May 5, 2006
    Publication date: September 28, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Kikuchi, Toshiaki Watanabe, Kenshi Dachiku, Takeshi Chujoh, Takeshi Nagai
  • Coding apparatus and decoding apparatus for transmission/storage of information
    Publication number: 20060218463
    Abstract: An output coding apparatus includes a coder for coding an inputted bitstream to an error correction and/or detection code composed of information bits and check bits; and a bitstream assembling section for assembling an outputted bitstream by inserting a synchronization code at any one of a plurality of synchronization code insertion positions previously determined in the outputted bitstream, arranging the information bits at any desired positions of the bitstream, and by arranging the check bits at positions other than the synchronization code insertion positions in the bitstream. Therefore, when the coding apparatus is combined with a resynchronization method using both an error correction and/or detection code and a synchronization code, it is possible to solve a problem caused by pseudo-synchronization or synchronization-loss pull-out or step-out due to erroneous detection of the synchronization code.
    Type: Application
    Filed: May 5, 2006
    Publication date: September 28, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Kikuchi, Toshiaki Watanabe, Kenshi Dachiku, Takeshi Chujoh, Takeshi Nagai
  • Coding apparatus and decoding apparatus for transmission/storage of information
    Publication number: 20060218462
    Abstract: An output coding apparatus includes a coder for coding an inputted bitstream to an error correction and/or detection code composed of information bits and check-bits; and a bitstream assembling section for assembling an outputted bitstream by inserting a synchronization code at any one of a plurality of synchronization code insertion positions previously determined in the outputted bitstream, arranging the information bits at any desired positions of the bitstream, and by arranging the check bits at positions other than the synchronization code insertion positions in the bitstream. Therefore, when the coding apparatus is combined with a resynchronization method using both an error correction and/or detection code and a synchronization code, it is possible to solve a problem caused by pseudo-synchronization or synchronization-loss pull-out or step-out due to erroneous detection of the synchronization code.
    Type: Application
    Filed: May 5, 2006
    Publication date: September 28, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Kikuchi, Toshiaki Watanabe, Kenshi Dachiku, Takeshi Chujoh, Takeshi Nagai
  • Coding apparatus and decoding apparatus for transmission/storage of information
    Publication number: 20060206785
    Abstract: An output coding apparatus includes a coder for coding an inputted bitstream to an error correction and/or detection code composed of information bits and check bits; and a bitstream assembling section for assembling an outputted bitstream by inserting a synchronization code at any one of a plurality of synchronization code insertion positions previously determined in the outputted bitstream, arranging the information bits at any desired positions of the bitstream, and by arranging the check bits at positions other than the synchronization code insertion positions in the bitstream. Therefore, when the coding apparatus is combined with a resynchronization method using both an error correction and/or detection code and a synchronization code, it is possible to solve a problem caused by pseudo-synchronization or synchronization-loss pull-out or step-out due to erroneous detection of the synchronization code.
    Type: Application
    Filed: May 5, 2006
    Publication date: September 14, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Kikuchi, Toshiaki Watanabe, Kenshi Dachiku, Takeshi Chujoh, Takeshi Nagai
  • Coding apparatus and decoding apparatus for transmission/storage of information
    Publication number: 20060206787
    Abstract: An output coding apparatus includes a coder for coding an inputted bitstream to an error correction and/or detection code composed of information bits and check bits; and a bitstream assembling section for assembling an outputted bitstream by inserting a synchronization code at any one of a plurality of synchronization code insertion positions previously determined in the outputted bitstream, arranging the information bits at any desired positions of the bitstream, and by arranging the check bits at positions other than the synchronization code insertion positions in the bitstream. Therefore, when the coding apparatus is combined with a resynchronization method using both an error correction and/or detection code and a synchronization code, it is possible to solve a problem caused by pseudo-synchronization or synchronization-loss pull-out or step-out due to erroneous detection of the synchronization code.
    Type: Application
    Filed: May 5, 2006
    Publication date: September 14, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Kikuchi, Toshiaki Watanabe, Kenshi Dachiku, Takeshi Chujoh, Takeshi Nagai