Patents by Inventor Makoto Tsuge

Makoto Tsuge 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).

  • Switching power supply device
    Patent number: 6542387
    Abstract: In a switching power supply device, LATCHs (1-5) count a bottom-number, namely, the number of occurrences of a bottom of a ringing generated, FFs(1-4) store the bottom-number, EXNORs (1-4) and AND(1) compare the previous bottom-number stored in FFs(1-4) with a current bottom-number counted by LATCHs(1-5), and the OFF-period of a switching element (Q1) is maintained until the current bottom-number is reached to the bottom-number of the ringing stored in the FFs (1-4).
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: April 1, 2003
    Assignee: Sanken Electric Co., Ltd.
    Inventor: Makoto Tsuge
  • Switching power supply device
    Publication number: 20020186571
    Abstract: In a switching power supply device, LATCHs (1-5) count a bottom-number, namely, the number of occurrences of a bottom of a ringing generated, FFs (1-4) store the bottom-number, EXNORs (1-4) and AND(1) compare the previous bottom-number stored in FFs(1-4) with a current bottom-number counted by LATCHs(1-5), and the OFF-period of a switching element (Q1) is maintained until the current bottom-number is reached to the bottom-number of the ringing stored in the FFs (1-4).
    Type: Application
    Filed: November 16, 2001
    Publication date: December 12, 2002
    Inventor: Makoto Tsuge