Patents by Inventor Tsun-Hsiang Cheng

Tsun-Hsiang Cheng 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).

  • Laser pointer with controllable pattern and size of projected image
    Patent number: 7971790
    Abstract: A laser pointer includes a human-machine interface disposed above the housing for users to control components inside the housing to decide patterns and size of the projecting image. The components consist of a frequency/phase control module, a driving energy control module, a laser beam generating module and a light scanning device. The frequency/phase control module controls the driving energy control module while the driving energy control module controls driving energy of the light scanning device. The size of the image is controlled by change of the amplitude of the light scanning device while the amplitude is changed along with the driving energy. The amplitude may also change along with the driving frequency. When the driving energy is fixed and the driving frequency is close to the resonant frequency, the amplitude increases. On the contrary, the amplitude decreases.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: July 5, 2011
    Assignee: Opus Microsystems Corporation
    Inventors: Chang-Li Hung, Feng-Chun Yeh, Tsun-Hsiang Cheng
  • LASER POINTER WITH CONTROLLABLE PATTERN AND SIZE OF PROJECTED IMAGE
    Publication number: 20090092161
    Abstract: A laser pointer includes a human-machine interface disposed above the housing for users to control components inside the housing to decide patterns and size of the projecting image. The components consist of a frequency/phase control module, a driving energy control module, a laser beam generating module and a light scanning device. The frequency/phase control module controls the driving energy control module while the driving energy control module controls driving energy of the light scanning device. The size of the image is controlled by change of the amplitude of the light scanning device while the amplitude is changed along with the driving energy. The amplitude may also change along with the driving frequency. When the driving energy is fixed and the driving frequency is close to the resonant frequency, the amplitude increases. On the contrary, the amplitude decreases.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 9, 2009
    Inventors: Chang-Li Hung, Feng-Chun Yeh, Tsun-Hsiang Cheng