Patents by Inventor Chien-Chung Tseng

Chien-Chung Tseng 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-on reset circuit with supply voltage and temperature immunity, ultra-low DC leakage current, and fast power crash reaction
    Patent number: 7135898
    Abstract: A power-on reset circuit includes a Schmitt trigger circuit, a voltage divider, and a compensate circuit. The Schmitt trigger circuit includes a plurality of MOS devices of a uniform threshold voltage (Vt) for determining a power reset trigger level. The voltage divider is coupled to an input of the Schmitt trigger circuit for tracking the supply signal. The compensate circuit is operative to generate a small reset pulse to compensate for temperature and the supply signal variation effect.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: November 14, 2006
    Assignee: Macronix International Co., Ltd.
    Inventors: Chien-Chung Tseng, Chih-Neng Hsu
  • Reference voltage generator with supply voltage and temperature immunity
    Patent number: 7042205
    Abstract: A reference voltage generator includes a first current source, an output current mirror, an output device, and a shunt device. The first current source generates a first current and has a first temperature coefficient. The output current mirror mirrors the first current and generates a second current in response to the first current. The output device provides a reference voltage in response to the second current. The shunt device has a second temperature coefficient that is complementary to the first temperature coefficient, and is operatively coupled in parallel with the output device.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: May 9, 2006
    Assignee: Macronix International Co., Ltd.
    Inventors: Chien-Chung Tseng, Chih-Neng Hsu
  • Reference voltage generator with supply voltage and temperature immunity
    Publication number: 20040263144
    Abstract: A reference voltage generator includes a first current source, an output current mirror, an output device, and a shunt device. The first current source generates a first current and has a first temperature coefficient. The output current mirror mirrors the first current and generates a second current in response to the first current. The output device provides a reference voltage in response to the second current. The shunt device has a second temperature coefficient that is complementary to the first temperature coefficient, and is operatively coupled in parallel with the output device.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 30, 2004
    Inventors: Chien-Chung Tseng, Chih-Neng Hsu
  • Power-on reset circuit with supply voltage and temperature immunity, ultra-low DC leakage current, and fast power crash reaction
    Publication number: 20040263222
    Abstract: A power-on reset circuit includes a Schmitt trigger circuit, a voltage divider, and a compensate circuit. The Schmitt trigger circuit includes a plurality of MOS devices of a uniform threshold voltage (Vt) for determining a power reset trigger level. The voltage divider is coupled to an input of the Schmitt trigger circuit for tracking the supply signal. The compensate circuit is operative to generate a small reset pulse to compensate for temperature and the supply signal variation effect.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 30, 2004
    Inventors: Chien-Chung Tseng, Chih-Neng Hsu