Patents by Inventor Asaki MIZUTA

Asaki MIZUTA 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).

  • Semiconductor device
    Patent number: 10969244
    Abstract: A switch group selectively outputs a signal input from IC terminals and a reference voltage. Another switch group selectively outputs a signal input from IC terminals and a reference voltage. A differential amplifier amplifies a differential voltage between a signal output from the switch group and a signal output from the another switch group. The switch group and the another switch group include the same number of switches. When to select any of signals input from the IC terminals in the switch group, a reference voltage is selected in the another switch group. When to select any of signals input from the IC terminals in the another switch group, a reference voltage is selected in the switch group.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: April 6, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Asaki Mizuta
  • SEMICONDUCTOR DEVICE
    Publication number: 20190293453
    Abstract: A switch group selectively outputs a signal input from IC terminals and a reference voltage. Another switch group selectively outputs a signal input from IC terminals and a reference voltage. A differential amplifier amplifies a differential voltage between a signal output from the switch group and a signal output from the another switch group. The switch group and the another switch group include the same number of switches. When to select any of signals input from the IC terminals in the switch group, a reference voltage is selected in the another switch group. When to select any of signals input from the IC terminals in the another switch group, a reference voltage is selected in the switch group.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 26, 2019
    Inventor: Asaki MIZUTA
  • Drive circuit
    Patent number: 9887692
    Abstract: A drive circuit including a signal source that outputs an AC signal, a voltage generator circuit that includes a differential amplifier that generates a first AC voltage with a constant amplitude from the AC signal and outputs the first AC voltage to one end of an external load, a voltage-to-current converter circuit that supplies an AC current with a constant amplitude in opposite phase to the first AC voltage to another end of the external load in accordance with the AC signal.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 6, 2018
    Assignee: Renesas Electronics Corporation
    Inventor: Asaki Mizuta
  • DRIVE CIRCUIT
    Publication number: 20170257085
    Abstract: A drive circuit including a signal source that outputs an AC signal, a voltage generator circuit that includes a differential amplifier that generates a first AC voltage with a constant amplitude from the AC signal and outputs the first AC voltage to one end of an external load, a voltage-to-current converter circuit that supplies an AC current with a constant amplitude in opposite phase to the first AC voltage to another end of the external load in accordance with the AC signal.
    Type: Application
    Filed: May 18, 2017
    Publication date: September 7, 2017
    Inventor: Asaki MIZUTA
  • Drive circuit
    Patent number: 9673792
    Abstract: A drive circuit includes a signal source that outputs an AC signal, a voltage generator circuit that includes a differential amplifier that generates a first AC voltage with a constant amplitude from the AC signal and outputs the first AC voltage to one end of an external load, and a voltage-to-current converter circuit that is connected to another end of the external load and supplies an AC current with a constant amplitude in opposite phase to the first AC voltage to the external load in accordance with the AC signal.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: June 6, 2017
    Assignee: Renesas Electronics Corporation
    Inventor: Asaki Mizuta
  • DRIVE CIRCUIT
    Publication number: 20150244335
    Abstract: A drive circuit includes a signal source that outputs an AC signal, a voltage generator circuit that includes a differential amplifier that generates a first AC voltage with a constant amplitude from the AC signal and outputs the first AC voltage to one end of an external load, and a voltage-to-current converter circuit that is connected to another end of the external load and supplies an AC current with a constant amplitude in opposite phase to the first AC voltage to the external load in accordance with the AC signal.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 27, 2015
    Inventor: Asaki MIZUTA