Patents by Inventor Ho Sing Hoi

Ho Sing Hoi 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).

  • Publication number: 20030181182
    Abstract: A receiver for use in a wireless audio transmission system includes a first voltage-controlled oscillator (“1st VCO”) for generating a first local oscillator (“1st LO”) signal, a down converter responsive to the first LO signal for converting a received high-frequency signal into a 1st IF signal having a frequency determined in part by the 1st LO signal, a reference signal source for generating a first reference signal, a second voltage-controlled oscillator (“2nd VCO”) responsive to the first reference signal for generating a second reference signal having a desired frequency for the 1st LO signal, a first phase-locked loop (“1st PLL”) responsive to the first and second reference signals for controlling the 2nd VCO to synchronize the phase of the first and second reference signals, and a second phase-locked loop (“2nd PLL”) responsive to the 1st LO signal and the second reference signal for controlling the 2nd VCO to synchronize the phase of the 1st
    Type: Application
    Filed: March 22, 2002
    Publication date: September 25, 2003
    Inventor: Ho Sing Hoi