Patents by Inventor Chung Wen Lo

Chung Wen Lo 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 a crystal oscillator to achieve fast start-up time, low power and frequency calibration
    Patent number: 7348861
    Abstract: One embodiment of the present invention includes a frequency generation circuit including a control module, an oscillator circuit coupled to the control module, the oscillator circuit having a start-up time defined by the time required to reach a desired frequency. The oscillator circuit includes an amplifier having an input and an output and being programmably-alterable by the control module, a first capacitor coupled to the input of the amplifier and being programmably-alterable, in capacitance, by the control module, a second capacitor coupled to the output of the amplifier, a crystal resonator coupled to the first and second capacitors for generating an output signal having a desired frequency, wherein fast start-up time is achieved.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: March 25, 2008
    Assignee: Ralink Technology, Inc.
    Inventors: I-chang Wu, Chung Wen Lo, Keng Leong Fong