Patents by Inventor Yoshiyuki Hama

Yoshiyuki Hama 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).

  • Memory management apparatus and memory management method
    Patent number: 8706954
    Abstract: A terminal apparatus including a non-volatile memory for which writing is performed in units of blocks; and a control unit configured to perform a first method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to an information management table in a file system of the non-volatile memory, and to perform a second method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to user data in the file system.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: April 22, 2014
    Assignees: Sony Corporation, Sony Mobile Communications AB
    Inventors: Katsumi Aoyagi, Rutger Ljungqvist, Hans Wachtmeister, Haekan Palm, Kenji Takao, Masaya Takahashi, Yoshiyuki Hama, Yimin Li, Toshihisa Sanbommatsu, Tomohiro Ichikawa
  • MEMORY MANAGEMENT APPARATUS AND MEMORY MANAGEMENT METHOD
    Publication number: 20120059979
    Abstract: A terminal apparatus including a non-volatile memory for which writing is performed in units of blocks; and a control unit configured to perform a first method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to an information management table in a file system of the non-volatile memory, and to perform a second method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to user data in the file system.
    Type: Application
    Filed: May 11, 2011
    Publication date: March 8, 2012
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Katsumi AOYAGI, Rutger Ljungqvist, Hans Wachtmeister, Haekan Palm, Kenji Takao, Masaya Takahashi, Yoshiyuki Hama, Yimin Li, Toshihisa Sanbommatsu, Tomohiro Ichikawa
  • Reaction vessel for optical measurement
    Patent number: 5538691
    Abstract: An apparatus for optical measurement is formed as a one-piece molding. The apparatus has a reaction vessel and pre-treatment vessels, at least part of the partitioning wall between the both serves as an optical waveguide body, and a light absorber vessel is formed adjacent the reaction vessel (24). Simplification of the process of manufacture thus is attained. With a light absorber accommodated in the light absorber vessel, (25), reaction components of excitation light and other noise light components that are propagated through the optical waveguide body can be sufficiently attenuated to improve the S/N ratio of the optical measurement.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: July 23, 1996
    Assignee: Daikin Industries, Ltd.
    Inventors: Kaori Tosa, Yoshiyuki Hama, Kouichi Yamamoto, Ryuuji Akiyama, Masakazu Yoshida, Hiroshi Yagi, Kazuhisa Shigemori, Tomomi Sakamoto