Patents by Inventor Motoi Yamaki

Motoi Yamaki 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 circuit and information processing apparatus for power factor correction and stable power supply
    Patent number: 8406016
    Abstract: A power supply circuit includes a rectifying unit for outputting a rectified input voltage, a transformer for receiving the voltage and outputting an induced voltage based on the input voltage, a first smoothing unit for smoothing the induced voltage to output a first output voltage, a detecting unit for outputting an error signal corresponding to the difference between the first output voltage and a reference voltage, and an insulating unit for receiving the error signal and outputting a signal corresponding to the error signal. The input and output terminals of the insulating unit are insulated. The circuit also includes a controlling unit for outputting a control signal for selectively inputting the input voltage into the transformer on basis of the signal from the insulating unit, and also includes a switching unit connected to the transformer for selectively inputting the input voltage into the transformer, based on the control signal.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: March 26, 2013
    Assignee: Sony Corporation
    Inventor: Motoi Yamaki
  • Power Supply Circuit and Information Processing Apparatus
    Publication number: 20100195359
    Abstract: A power supply circuit includes a rectifying unit for outputting a rectified input voltage, a transformer for receiving the voltage and outputting an induced voltage based on the input voltage, a first smoothing unit for smoothing the induced voltage to output a first output voltage, a detecting unit for outputting an error signal corresponding to the difference between the first output voltage and a reference voltage, and an insulating unit for receiving the error signal and outputting a signal corresponding to the error signal. The input and output terminals of the insulating unit are insulated. The circuit also includes a controlling unit for outputting a control signal for selectively inputting the input voltage into the transformer on basis of the signal from the insulating unit, and also includes a switching unit connected to the transformer for selectively inputting the input voltage into the transformer, based on the control signal.
    Type: Application
    Filed: January 27, 2010
    Publication date: August 5, 2010
    Inventor: Motoi YAMAKI