Patents by Inventor Satoshi Tsujii

Satoshi Tsujii 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: 20050125381
    Abstract: A digital recording apparatus using a disc shaped record medium is disclosed, that comprises a means for extracting outlined information of each of a plurality of files recorded on the disc shaped record medium, a means for correlating the extracted outlined information and the plurality of files and generating an index file, and a means for recording the index file to a predetermined position of the disc shaped record medium, wherein when a predetermined operation mode is performed, a plurality of types of data of the plurality of files are output in a predetermined format.
    Type: Application
    Filed: January 25, 2005
    Publication date: June 9, 2005
    Inventors: Makoto Yamada, Satoshi Tsujii, Toshihiro Ishizaka
  • Patent number: 6871205
    Abstract: A digital recording apparatus using a disc shaped record medium is disclosed, that comprises a means for extracting outlined information of each of a plurality of files recorded on the disc shaped record medium, a means for correlating the extracted outlined information and the plurality of files and generating an index file, and a means for recording the index file to a predetermined position of the disc shaped record medium, wherein when a predetermined operation mode is performed, a plurality of types of data of the plurality of files are output in a predetermined format.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: March 22, 2005
    Assignee: Sony Corporation
    Inventors: Makoto Yamada, Satoshi Tsujii, Toshihiro Ishizaka
  • Publication number: 20030133695
    Abstract: The present invention relates to a recording apparatus and a record medium for recording a data read time, a seek time, a successive reproduction time, a successive record length, and a correlation among data pieces.
    Type: Application
    Filed: September 12, 2002
    Publication date: July 17, 2003
    Inventors: Mitsuhiro Hirabayashi, Toshihiro Ishizaka, Satoshi Tsujii, Makoto Yamada
  • Patent number: 6549720
    Abstract: A picture signal processing method and apparatus, a picture signal recording method and apparatus, and a recording medium, in which resolution switching is effected seamlessly. To this end, a controller 19 has the function of reading out the identification information specifying the resolution of the bitstream and the relation between the recording units, from a user data region provided in a video stream as a minimum unit which permits switching of the resolution in a MPEG 2 standard bitstream, and of switching the resolution of the picture signals associated with the recording units.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: April 15, 2003
    Assignee: Sony Corporation
    Inventors: Makoto Yamada, Satoshi Tsujii, Naoki Morimoto
  • Patent number: 6507615
    Abstract: A video signal processing apparatus and a video signal processing method can switch resolution effectively and efficiently. The video signals coming from an imaging apparatus is converted into digital signals by an A/D converter 2 an compressed by a compressor 3. The compressed video signals are written into a recording medium 5 by means of a write device 4. The compressor 3 encodes the video signals for each group of pictures comprising a plurality of pictures and the camera compression control unit 6 controls the compressor 3 so as encode the pictures of a first group of pictures and those of a second group of pictures arranged temporally adjacent to the first group of pictures, while maintaining the number of pictures of two temporally adjacent groups of pictures that contain a resolution change point of video signals to a constant value, and change the resolution of the pictures of the two groups of pictures.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: January 14, 2003
    Assignee: Sony Corporation
    Inventors: Satoshi Tsujii, Makoto Yamada, Naoki Morimoto
  • Publication number: 20010005400
    Abstract: A picture recording apparatus for compression-encoding a moving picture sequence and recording the resultant data to a record medium is disclosed, that comprises an encoding means for compression-encoding an input moving picture sequence, a recording means for recording the compression-encoded data generated by the encoding means to a record medium, and a picture generating means for extracting a plurality of pictures from the input moving picture sequence at irregular intervals and generating reduced pictures with the extracted pictures while the compression-encoded data being recorded to the record medium.
    Type: Application
    Filed: November 30, 2000
    Publication date: June 28, 2001
    Inventors: Satoshi Tsujii, Makoto Yamada
  • Patent number: 5930397
    Abstract: An image signal processor and an image signal processing method arranged to limit a deterioration in image quality at the time of compression and expansion at a low coding rate. Data of an input image undergoes pre-processing in a pre-processing unit before being compressed by a compressor unit in accordance with the MPEG method. An information amount prediction processor calculates activity representing the complexity of the image input through an image input unit, and sets filter coefficients and the number of pixels of an output image according to the activity such that the amount of information of a picture to be compressed is reduced. The information amount prediction processor supplies a filter processor and a thinning-out processor with the filter coefficients and the number of pixels, respectively. The filter processor performs filtering with the filter coefficients, and the thinning-out processor converts the input image so that the output image has the set number of pixels.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: July 27, 1999
    Assignee: Sony Corporation
    Inventors: Satoshi Tsujii, Makoto Yamada