Patents by Inventor Hideki Otaka

Hideki Otaka 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).

  • Digital video signal recording/reproducing apparatus
    Patent number: 5237424
    Abstract: A digital video signal is shuffled such that blocks of a luminance signal and a chrominance signal existing at a same position on an image plane are contained in a same segment recorded on a recording medium or in a plurality of segments recorded simultaneously in parallel using a plurality of channels. Thus, the luminance signal and chrominance signal being at the same position on the image plane are always obtainable simultaneously even during high-speed reproducing in a digital VTR.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 17, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masakazu Nishino, Tatsuro Juri, Hideki Otaka
  • Variable length encoder having sign bit separation
    Patent number: 5166684
    Abstract: A variable length code encoder is provided in which, during variable length code encoding of video or audio data which has been divided into blocks for ease of transmission or storage, the lowest bit of a particular variable length code in each block of code words which is composed of a special pattern of bits and arranged to appear at no other position than the end of the block, is utilized for carrying a piece of data in addition to the data of the block.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: November 24, 1992
    Assignee: Matsushita Electric Industrial Co, Ltd.
    Inventors: Tatsuro Juri, Masakazu Nishino, Hideki Otaka
  • Encoding apparatus
    Patent number: 5150208
    Abstract: A maximum value of each block after orthogonal transformation is detected, and an output word length after orthogonal transformation is controlled in accordance with the maximum value thus detected. In addition, a plurality of tables each having a plurality of quantizers combinedly used are prepared and a table is selected in accordance with the maximum value of each block, thereby selecting the optimum quantizer in accordance with the data amount thus generated.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: September 22, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Otaka, Masakazu Nishino, Tatsuro Juri