Patents by Inventor Shigekatsu Hasegawa

Shigekatsu Hasegawa 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).

  • Data writing method and data recording apparatus without buffer under-run
    Publication number: 20050068868
    Abstract: A data recording apparatus (10) has a set of connectors (16) enable to connected to a plurality of types of memory cards. A card reader (12) reads data out of a memory card connected to one of the set of connectors. A CD-R/RW drive (14) writes date read out of the card reader into a CD-R/RW. A CPU (18) of the card reader decides a type of the memory card connected to the connector, determines a writing rate for a CD-R/RW corresponding to a reading rate of the memory card in accordance with the decided type, and sets the determined writing rate in the CD-R/RW drive.
    Type: Application
    Filed: June 1, 2004
    Publication date: March 31, 2005
    Applicant: MITSUMI ELECTRIC CO., LTD
    Inventor: Shigekatsu Hasegawa
  • Synchronizing circuit
    Patent number: 6853678
    Abstract: A synchronizing circuit synchronizes a predetermined code with first and second codes different in phase, include: a code generating part outputting phase-shifted code shifted in phase by a predetermined number of chips from the predetermined code; a first correlation detecting part detecting a correlation between the phase-shifted code from the code generating part and the first code; a second correlation detecting part detecting a correlation between the phase-shifted code from the code generating part and the second code; and a code shifting part shifting the phase of the phase-shifted code from the code generating part by a predetermined number of chips according to the detection results of the first and second correlation detecting parts.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: February 8, 2005
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Shigekatsu Hasegawa, Naoto Endo
  • Synchronizing circuit
    Publication number: 20010012318
    Abstract: A synchronizing circuit synchronizes a predetermined code with first and second codes different in phase, include: a code generating part outputting phase-shifted code shifted in phase by a predetermined number of chips from the predetermined code; a first correlation detecting part detecting a correlation between the phase-shifted code from the code generating part and the first code; a second correlation detecting part detecting a correlation between the phase-shifted code from the code generating part and the second code; and a code shifting part shifting the phase of the phase-shifted code from the code generating part by a predetermined number of chips according to the detection results of the first and second correlation detecting parts.
    Type: Application
    Filed: January 16, 2001
    Publication date: August 9, 2001
    Inventors: Shigekatsu Hasegawa, Naoto Endo