Patents by Inventor Kaoru Okayasu

Kaoru Okayasu 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).

  • Device that provides power to a host via a Mini-B interface upon detection of a predetermined voltage
    Patent number: 7356715
    Abstract: When a host 101 is connected to a device 102 via a USB cable 103, the ID terminal on the device 102 is short-circuited to the GND line, hence to reduce the voltage level of the ID terminal. Since power feeding means 109 starts feeding power to the VBUS terminal when detecting that the voltage level of the ID terminal turns from “H” to “L”, the power is supplied to the host 101 through the VBUS line of the USB cable 103.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: April 8, 2008
    Assignee: TDK Corporation
    Inventor: Kaoru Okayasu
  • USB interface system
    Publication number: 20050039060
    Abstract: When a host 101 is connected to a device 102 via a USB cable 103, the ID terminal on the device 102 is short-circuited to the GND line, hence to reduce the voltage level of the ID terminal. Since power feeding means 109 starts feeding power to the VBUS terminal when detecting that the voltage level of the ID terminal turns from “H” to “L”, the power is supplied to the host 101 through the VBUS line of the USB cable 103.
    Type: Application
    Filed: June 29, 2004
    Publication date: February 17, 2005
    Applicant: TDK CORPORATION
    Inventor: Kaoru Okayasu