Patents by Inventor Tasuya Matano

Tasuya Matano 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).

  • Patent number: 8089305
    Abstract: A power supply voltage reset circuit, provided in an apparatus having an internal circuit capable of adjusting an internal power supply voltage, for resetting the internal circuit when a power supply voltage of the apparatus rises, and includes: a unit that generates an internal power supply voltage reference signal and changes a signal level thereof; a unit that generates an internal reference voltage to be a reference level in generating a reset signal for the internal circuit at a time of rising of the power supply voltage; a unit that generates a power-on adjustment voltage which rises later than the internal reference voltage at the time of rising of the power supply voltage and becomes greater than the internal reference voltage after a predetermined time passes; and a unit that generates the reset signal by comparing the internal reference voltage with the power-on adjustment voltage.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: January 3, 2012
    Assignee: Elpida Memory, Inc.
    Inventor: Tasuya Matano