Patents by Inventor Tian-Kai Chang

Tian-Kai Chang 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: 20090251412
    Abstract: A motion sensing input device of a computer system includes a motion sensor and a receiver. The motion sensor has two gyroscopes for sensing motions in different directions when a user operates the motion sensor. The motion signals are wirelessly transmitted to the receiver connected with the computer system. Furthermore, the motion signals are directly decoded via the receiver, and then they are converted to keyboard input signals. When the user plays a computer game by using the motion sensor to replace a keyboard, the user can experience a lifelike game environment and an intuitive operation mode.
    Type: Application
    Filed: May 12, 2009
    Publication date: October 8, 2009
    Inventor: Tian-Kai Chang
  • Publication number: 20090102789
    Abstract: An input apparatus for a computer system is provided. The input apparatus includes a positioning module, a motion detector, and a receiver. The positioning module includes a plurality of positioning light sources, for emitting light rays having a predetermined wavelength. The motion detector includes a G-sensor, and a light sensing unit, for detecting a motion state of the motion detector in a three-dimensional space, and outputting a sensing data. The light sensing unit is provided for receiving the light rays emitted from the positioning light sources. The receiver is coupled to the computer system via a transmission interface, and is adapted for receiving the sensing data outputted from the motion detector via a wireless transmission path. In such a way, the receiver can generate an operation instruction according to the sensing data, and transmit the operation instruction to the computer system via the transmission interface, for operating the computer system.
    Type: Application
    Filed: September 25, 2008
    Publication date: April 23, 2009
    Applicant: ASUSTEK COMPUTER INC.
    Inventors: Chin-Chung Kuo, Tian-Kai Chang, Ling-Chen Chang