Patents by Inventor Shih-Liang Tsai

Shih-Liang Tsai 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).

  • Directional antenna and portable electronic device using the same
    Patent number: 8059056
    Abstract: A directional antenna and a portable electronic device using the same are provided. The directional antenna includes L-shaped radiator, L-shaped oscillator, and L-shaped reflector and it is preferred that the directional antenna is positioned at corners of the substrate. The L-shaped radiator is made resonant by the L-shaped oscillator and has higher gain to maximize performance of signal transmission. The directional antenna achieves signal transmission in a specific direction over a long distance by the L-shaped reflector. In addition, with the gravity sensor, the processor and the switches, the directional antenna is automatically adjusted to a predetermined direction to transmit and receive signals even through orientation of the electronic device is changing at any time.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 15, 2011
    Assignee: Foxconn Communication Technology Corp.
    Inventors: Chin-Hung Ma, Shih-Liang Tsai
  • DIRECTIONAL ANTENNA AND PORTABLE ELECTRONIC DEVICE USING THE SAME
    Publication number: 20090109118
    Abstract: A directional antenna and a portable electronic device using the same are provided. The directional antenna includes L-shaped radiator, L-shaped oscillator, and L-shaped reflector and it is preferred that the directional antenna is positioned at corners of the substrate. The L-shaped radiator is made resonant by the L-shaped oscillator and has higher gain to maximize performance of signal transmission. The directional antenna achieves signal transmission in a specific direction over a long distance by the L-shaped reflector. In addition, with the gravity sensor, the processor and the switches, the directional antenna is automatically adjusted to a predetermined direction to transmit and receive signals even through orientation of the electronic device is changing at any time.
    Type: Application
    Filed: December 20, 2007
    Publication date: April 30, 2009
    Applicant: MOBINNOVA HONG KONG LIMITED
    Inventors: CHIN-HUNG MA, SHIH-LIANG TSAI