Patents by Inventor Tomoaki Maekawa

Tomoaki Maekawa 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).

  • Power supply monitoring device, electronic apparatus, and power supply monitoring method
    Patent number: 10215815
    Abstract: A power supply monitoring device, comprising a monitoring circuit that includes a first charge comparing unit configured to generate a first comparison result based on a first pulsating signal, a second charge comparing unit configured to generate second comparison result based on a second pulsating signal, and a power interruption detection unit configured to output a detection signal based on whether the first and second comparison results indicate a supply of power has been interrupted.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: February 26, 2019
    Assignee: Sony Corporation
    Inventor: Tomoaki Maekawa
  • POWER SUPPLY MONITORING DEVICE, ELECTRONIC APPARATUS, AND POWER SUPPLY MONITORING METHOD
    Publication number: 20150301125
    Abstract: A power supply monitoring device, comprising a monitoring circuit that includes a first charge comparing unit configured to generate a first comparison result based on a first pulsating signal, a second charge comparing unit configured to generate second comparison result based on a second pulsating signal, and a power interruption detection unit configured to output a detection signal based on whether the first and second comparison results indicate a supply of power has been interrupted.
    Type: Application
    Filed: July 5, 2013
    Publication date: October 22, 2015
    Inventor: Tomoaki Maekawa