Patents by Inventor Miyuki Maezawa

Miyuki Maezawa 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).

  • Tactile sensor signal processing device capable of obtaining detailed living body information in short time
    Patent number: 6231520
    Abstract: A tactile sensor signal processing device includes a tactile sensor using a piezoelectric vibrator, a resonant resistance change detect unit, a resonant frequency change detect unit, a vibrator constant storage unit, and a signal processing unit. The resonant resistance change detect unit detects a change in resonant resistance of impedance characteristics of the piezoelectric vibrator. The resonant frequency change detect unit detects a change in resonant frequency of impedance characteristics of the piezoelectric vibrator. In the vibrator constant storage unit are stored in advance physical constants that include the size of the vibrating portion of the piezoelectric vibrator, piezoelectric and coupling constants associated with the piezoelectric mode of the piezoelectric vibrator, the density of the piezoelectric vibrator, and the size of a contact which is brought into contact with a subject to apply vibrations to it.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: May 15, 2001
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Miyuki Maezawa