Patents by Inventor Chin Hon Ng

Chin Hon Ng 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 measuring the instantaneous frequency of FM signals
    Patent number: 6630820
    Abstract: A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, includes sampling, instantaneous frequency computing, and lowpass filtering. FM modulated signal are sampled at prescribed intervals to provide digitized FM signal. The instantaneous frequency is computed by manipulating the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: October 7, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mi Michael Bi, Peter Kwong Ming Kiew, Chin Hon Ng
  • Method and apparatus for measuring the instantaneous frequency of FM signals
    Publication number: 20030052662
    Abstract: A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, comprises a sampling means, an instantaneous frequency computing means and a lowpass filtering means. The sampling means samples FM modulated signal at prescribed intervals to provide digitized FM signal. The instantaneous frequency computing means manipulates the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.
    Type: Application
    Filed: October 3, 2002
    Publication date: March 20, 2003
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Mi Michael Bi, Peter Kwong Ming Kiew, Chin Hon Ng
  • Method and apparatus for measuring the instantaneous frequency of FM signals
    Patent number: 6483286
    Abstract: A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, includes sampling, instantaneous frequency computing, and lowpass filtering. FM modulated signal are sampled at prescribed intervals to provide digitized FM signal. The instantaneous frequency is computed by manipulating the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: November 19, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mi Michael Bi, Ming Kwong Peter Kiew, Chin Hon Ng