Patents by Inventor Chi-Neng Tseng

Chi-Neng Tseng 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 for an anti-melt projection lens cap
    Patent number: 7273283
    Abstract: A method and apparatus for an anti-melt projection lens cap includes a sensor that detects whether the projection lens cap covers the projection lens and transmits a detected signal to the control unit including two control modes. The first one is projecting a dark image immediately, as the projection lens cap covers the projection lens for longer than a first set time, the control unit switches to a power-saving mode, when it lasts longer than a second set time, the lamp and the system power supply are turned off, then, a fan cools the lamp, the control unit switches to a standby mode. The second one is switching to the power-saving mode directly, when it lasts longer than a second set time, the lamp and the system power supply are turned off, and a fan cools the lamp, then, the control unit switches to the standby mode.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: September 25, 2007
    Assignee: Coretronic Corporation
    Inventors: Wen-Wei Tsai, Chi-Neng Tseng, Cheng-Kuei Chen, Chih-Kun Yang
  • Method and apparatus for an anti-melt projection lens cap
    Publication number: 20050151933
    Abstract: A method and apparatus for an anti-melt projection lens cap includes a sensor that detects whether the projection lens cap covers the projection lens and transmits a detected signal to the control unit including two control modes. The first one is projecting a dark image immediately, as the projection lens cap covers the projection lens for longer than a first set time, the control unit switches to a power-saving mode, when it lasts longer than a second set time, the lamp and the system power supply are turned off, then, a fan cools the lamp, the control unit switches to a standby mode. The second one is switching to the power-saving mode directly, when it lasts longer than a second set time, the lamp and the system power supply are turned off, and a fan cools the lamp, then, the control unit switches to the standby mode.
    Type: Application
    Filed: January 7, 2005
    Publication date: July 14, 2005
    Inventors: Wen-Wei Tsai, Chi-Neng Tseng, Cheng-Kuei Chen, Chih-Kun Yang