Patents by Inventor Chor-Tin Ma

Chor-Tin Ma 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 Of Improving Accuracy Of Accelerometer
    Publication number: 20100199744
    Abstract: A method and apparatus for calibrating or adjusting an accelerometer, wherein the accelerometer is held stationary to obtain the signal outputs from the accelerometer, representing component vectors making up the composite vector of 1g. Thus, gain or sensitivity, and the zero-g signal offset along for each axis of the accelerometer is determined and adjustable.
    Type: Application
    Filed: August 28, 2009
    Publication date: August 12, 2010
    Applicant: Perception Digital Limited
    Inventors: Kai Kin CHAN, Chor Tin MA
  • APPARATUS AND A METHOD FOR MONITORING PHYSICAL EXERCISE
    Publication number: 20100010774
    Abstract: A person's exercise monitored by using an accelerometer to detect and count the steps of the person. Furthermore, acceleration profiling distinguishes walking from running and total distance covered in the exercise is estimated using different stride lengths for walking and running. The person's pace may be maintained using a music playback unit capable of adjusting the rate of the playback so as to influence the person by the music tempo.
    Type: Application
    Filed: December 23, 2008
    Publication date: January 14, 2010
    Applicant: PERCEPTION DIGITAL LTD.
    Inventors: Chor-Tin Ma, Kai Kin Chan
  • EXERCISE DEVICE, SENSOR AND METHOD OF DETERMINING BODY PARAMETERS DURING EXERCISE
    Publication number: 20090177097
    Abstract: A noninvasive light sensor for detecting heart beat signals has a circular support member engageable circumferentially with a body part of a person. Light emitters and light detectors are located around a circumference of the circular support member for respectively emitting light signals into different areas of tissue surrounding the body part, and detecting reflected light signals from the different areas of tissue surrounding the body part.
    Type: Application
    Filed: August 21, 2008
    Publication date: July 9, 2009
    Applicant: PERCEPTION DIGITAL LIMITED
    Inventors: Chor Tin Ma, Kai Kin Chan, Ming Yip Wong, Kai Wai Yeung, Fo Chau
  • ELECTRONIC DISPLAY DEVICE FOR DISPLAYING DIGITAL IMAGES
    Publication number: 20080204359
    Abstract: A display device has a screen for displaying digital images located on a housing that encloses a storage medium for storing the digital images, and a processor for performing functions such reading images from the storage medium and displaying the images on the display screen. A frame detachably securable to the housing surrounds the display screen, and electronically communicates with the processor when secured to the housing for configuring how the processor performs the functions of the display device.
    Type: Application
    Filed: April 17, 2007
    Publication date: August 28, 2008
    Applicant: PERCEPTION DIGITAL LIMITED
    Inventors: Chi-Ying TSUI, Ping KOW, Kai Kin CHAN, Chor Tin MA
  • METHOD OF PROVIDING MEDIA CONTENT FOR A PORTABLE MEDIA PLAYER
    Publication number: 20080195474
    Abstract: A method of providing media content for a portable media player makes available in a database entertainment content and message content for downloading and storing on a portable media player. The message content is downloaded and stored on the media player with the entertainment content for playing on the media player in connection with playing of the entertainment content. The play data for entertainment content and/or message content stored on the media player is uploading to the database or another database.
    Type: Application
    Filed: March 23, 2007
    Publication date: August 14, 2008
    Inventors: Jack LAU, Chi-Ying TSUI, Kai Kin CHAN, Ping KOW, Chor Tin MA