Patents by Inventor Akiyoshi Nagawo

Akiyoshi Nagawo 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: 5574566
    Abstract: In an apparatus of digitally recording and reproducing video signals, when video signal data in one image frame is divided into a multiple-number of parts (N-parts) by dividing the image frame into N-divided rectangular regions and the N-parts of data are recorded on respective N tracks, each rectangular region is divided into blocks each having a multiple number of pixels and the thus generated blocks is subjected to a bit reduction coding operation. In recording the blocks, each of blocks are recorded onto a corresponding track in such a sequence that the blocks are scanned in a reciprocating manner along short-side directions of the rectangular region on the image frame. When the data is reproduced in a varied speed playback mode, the data are modified by every short-side row of blocks to thereby provide a high-quality playback picture at the varied speed.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: November 12, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Eiichi Takakura, Michiyuki Sugino, Takayoshi Yamaguchi, Akiyoshi Nagawo