Patents by Inventor Tin-Sing Lam

Tin-Sing Lam 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).

  • Frequency switching method
    Patent number: 7548120
    Abstract: A frequency switching method is used to make switching among a plurality of frequency signal sources each providing a specific frequency range covering multiple bands. The method includes steps of providing a target frequency data; selecting one of the frequency signal sources to output a first clock signal; generating a first frequency data according to the clock signal of the first frequency to compare with the target frequency data; outputting a second clock signal with the highest band of another one of the frequency signal sources possessing a frequency range higher than that of the selected frequency signal source when the target frequency data is greater than the first frequency data; and outputting the second clock signal with the lowest band of the selected frequency signal source when the target frequency data is smaller than the first frequency data.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: June 16, 2009
    Assignee: MStar Semiconductor, Inc.
    Inventors: Tin-Sing Lam, Chao-Tung Yang, Heng-Chih Lin, Shou-Fang Chen, Sining Zhou
  • FREQUENCY SWITCHING METHOD
    Publication number: 20080036506
    Abstract: A frequency switching method is used to make switching among a plurality of frequency signal sources each providing a specific frequency range covering multiple bands. The method includes steps of providing a target frequency data; selecting one of the frequency signal sources to output a first clock signal; generating a first frequency data according to the clock signal of the first frequency to compare with the target frequency data; outputting a second clock signal with the highest band of another one of the frequency signal sources possessing a frequency range higher than that of the selected frequency signal source when the target frequency data is greater than the first frequency data; and outputting the second clock signal with the lowest band of the selected frequency signal source when the target frequency data is smaller than the first frequency data.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 14, 2008
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Tin-Sing Lam, Chao-Tung Yang, Heng-Chih Lin, Shou-Fang Chen, Sining Zhou