Patents by Inventor Jia-Heng Chang

Jia-Heng Chang 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).

  • Pseudo resistor with tunable resistance
    Patent number: 10536135
    Abstract: A pseudo resistor with tunable resistance including a first transistor and a second transistor is provided. The first transistor has a first terminal, a second terminal and a control terminal. The first terminal of the first transistor serves as a first terminal of the pseudo resistor. The control terminal of the first transistor receives a control voltage. The first transistor is controlled by the control voltage, such that the first transistor operates in a weak inversion region. The second transistor has a first terminal, a second terminal and a control terminal. The first terminal of the second transistor is coupled to the second terminal of the first transistor. The second terminal of the second transistor and the control terminal of the second transistor are coupled to each other to serve as a second terminal of the pseudo resistor with tunable resistance. The second transistor operates in the weak inversion region.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: January 14, 2020
    Assignee: Winbond Electronics Corp.
    Inventors: Chung-Chih Hung, Jia-Heng Chang
  • PSEUDO RESISTOR WITH TUNABLE RESISTANCE
    Publication number: 20180234081
    Abstract: A pseudo resistor with tunable resistance including a first transistor and a second transistor is provided. The first transistor has a first terminal, a second terminal and a control terminal. The first terminal of the first transistor serves as a first terminal of the pseudo resistor. The control terminal of the first transistor receives a control voltage. The first transistor is controlled by the control voltage, such that the first transistor operates in a weak inversion region. The second transistor has a first terminal, a second terminal and a control terminal. The first terminal of the second transistor is coupled to the second terminal of the first transistor. The second terminal of the second transistor and the control terminal of the second transistor are coupled to each other to serve as a second terminal of the pseudo resistor with tunable resistance. The second transistor operates in the weak inversion region.
    Type: Application
    Filed: August 2, 2017
    Publication date: August 16, 2018
    Applicant: Winbond Electronics Corp.
    Inventors: Chung-Chih Hung, Jia-Heng Chang