Patents by Inventor Renyong Fan

Renyong Fan 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).

  • Method and apparatus for integrated noise decoupling
    Publication number: 20040226735
    Abstract: A method and apparatus for large scale noise decoupling in an integrated circuit is disclosed herein. A power decoupling mesh and a power distribution structure are included in the integrated circuit. The power decoupling mesh is configured in accordance with the power distribution structure. The power decoupling mesh comprises a plurality of decoupling capacitors, such as trench capacitors or MOSFETs.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 18, 2004
    Inventors: Ping Wu, Datong Chen, Renyong Fan, Jin Ji
  • I/O buffer having a protection circuit for handling different voltage supply levels
    Patent number: 6784693
    Abstract: An I/O buffer circuit is disclosed which includes protection circuitry to allow the I/O buffer circuit to tolerate multiple voltages. Further, the buffer circuit is adapted to have little to no leakage current. The buffer circuit includes an output portion that consists of a PMOS transistor in series with two NMOS transistors. Further, the PMOS transistor is controlled by a protection circuit that is operative to prevent leakage current.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: August 31, 2004
    Assignee: Spreadtrum Communications Corporation
    Inventors: Renyong Fan, Zhaohua Xiao
  • Differential voltage memory bus
    Patent number: 6735130
    Abstract: A method of communicating between a memory and circuitry on an integrated circuit is disclosed. The method comprises converting a first input signal from the memory to a first differential output signal dependent upon the first input signal. The first input signal is a full swing signal. The first differential output signal is propagated to the circuitry using a pair of first signal lines. Finally, at the circuitry, the first differential output signal is converted into a first received signal, which is a full swing signal.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: May 11, 2004
    Assignee: Spreadtrum Communications Corporation
    Inventors: Renyong Fan, Zhaohua Xiao
  • Differential voltage memory bus
    Publication number: 20030214849
    Abstract: A method of communicating between a memory and circuitry on an integrated circuit is disclosed. The method comprises converting a first input signal from the memory to a first differential output signal dependent upon the first input signal. The first input signal is a full swing signal. The first differential output signal is propagated to the circuitry using a pair of first signal lines. Finally, at the circuitry, the first differential output signal is converted into a first received signal, which is a full swing signal.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 20, 2003
    Inventors: Renyong Fan, Zhaohua Xiao
  • I/O buffer having a protection circuit for handling different voltage supply levels
    Publication number: 20030169075
    Abstract: An I/O buffer circuit is disclosed which includes protection circuitry to allow the I/O buffer circuit to tolerate multiple voltages. Further, the buffer circuit is adapted to have little to no leakage current. The buffer circuit includes an output portion that consists of a PMOS transistor in series with two NMOS transistors. Further, the PMOS transistor is controlled by a protection circuit that is operative to prevent leakage current.
    Type: Application
    Filed: February 24, 2003
    Publication date: September 11, 2003
    Inventors: Renyong Fan, Zhaohua Xiao