Patents by Inventor Harumi Hirose

Harumi Hirose 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).

  • Sequential EEPROM writing apparatus which sequentially and repetitively replaces a head position pointer with a last position pointer
    Patent number: 5689676
    Abstract: A storage device incorporating an electrically erasable read only memory (EEPROM) or other data storage device having a limited number of total times of rewriting, has its useful like extended by the method of storing a pointer corresponding to the capacity of the memory, which pointer identifies a start position in the data storage device at which rewriting is to occur, and incrementing the pointer sequentially with each writing of the data storage device. The method and associated apparatus may be used to maintain a record of on-time of electronic apparatus, and/or to maintain data for correcting the white balance of a video camera under various light conditions.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: November 18, 1997
    Assignee: Sony Corporation
    Inventors: Harumi Hirose, Toshizumi Ando, Yoshiki Takekawa, Toshiaki Isogawa, Shingo Nakata