Patents by Inventor Jaifu Luo

Jaifu Luo 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).

  • Multi-stage amplifier with switching circuitry
    Patent number: 7199654
    Abstract: Disclosed are a multi-stage amplifier circuit, a method of operating a multi-stage amplifier circuit, and a device with the multi-stage amplifier circuit. The amplifier circuit technology includes an operational amplifier shared among multiple stages and switching circuitry. The various switching circuitry switches among elements to provide different input signals and different feedback to the shared operational amplifier at the different stages of operation of the amplifier circuit. The various switching circuitry also stores and discharges charge at one or more operational amplifier inputs.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: April 3, 2007
    Assignee: ESS Technology, Inc.
    Inventors: Jaifu Luo, Rajagopal Sundararaman, Mehmet Ali Tan