Patents by Inventor Chi Cheong Szeto

Chi Cheong Szeto 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).

  • Devices and methods for heart rate measurement and wrist-watch incorporating same
    Patent number: 7379770
    Abstract: A method and device for heart rate measurement uses a stream of signals containing ECG signals to select a reference QRS complex according to a set of predetermined criteria and obtain electrical signal characteristics of the reference QRS complex. A first QRS complex is detected from the stream of signals and characterized in relation to the reference QRS in the time domain such that the first QRS complex meets another set of predetermined criteria, and satisfies a level of similarity with the reference QRS complex. An instantaneous heart rate of a subject is evaluated based on the first and the reference QRS complexes when the first and the second QRS complexes are sufficiently similar.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: May 27, 2008
    Assignee: Dayton Technologies Limited
    Inventor: Chi Cheong Szeto
  • Devices and methods for heart rate measurement and wrist-watch incorporating same
    Publication number: 20040228217
    Abstract: Method of measuring the heart rate of a human being, including the steps of:—
    Type: Application
    Filed: June 16, 2003
    Publication date: November 18, 2004
    Applicant: Century Ocean Corporation Limited
    Inventor: Chi Cheong Szeto