Patents by Inventor Chung-Yue Chen

Chung-Yue Chen 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).

  • Light adjustment circuit for alternating-current light emitting diodes (AC-LED's)
    Patent number: 8111009
    Abstract: A light adjustment circuit for alternating-current light emitting diodes (AC-LED's) connected to an AC power supply and a plurality of AC-LED's comprises: a light adjustment unit, being capable of modulating AC power from the AC power supply while providing the plurality of AC-LED's with the modulated AC power; and a pulse width modulation (PWM) control circuit, being capable of modulating an external voltage signal in correspondence to variation in input AC power to enable each of the AC-LED's to achieve a predetermined brightness; wherein the AC-LED's are turned off by modulating the external voltage signal to prevent the AC-LED's from being burnt out when the input AC power is too high.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: February 7, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Wen-Tien Tsai, Bing-Chwen Yang, Hwei-Shung Chong, Chung-Yue Chen, Yie-Tone Chen, Yao-Te Huang, Li-Ling Lee
  • Light Adjustment Circuit For Alternating-Current Light Emitting Diodes (AC-LED's)
    Publication number: 20110057568
    Abstract: A light adjustment circuit for alternating-current light emitting diodes (AC-LED's) connected to an AC power supply and a plurality of AC-LED's comprises: a light adjustment unit, being capable of modulating AC power from the AC power supply while providing the plurality of AC-LED's with the modulated AC power; and a pulse width modulation (PWM) control circuit, being capable of modulating an external voltage signal in correspondence to variation in input AC power to enable each of the AC-LED's to achieve a predetermined brightness; wherein the AC-LED's are turned off by modulating the external voltage signal to prevent the AC-LED's from being burnt out when the input AC power is too high.
    Type: Application
    Filed: November 30, 2009
    Publication date: March 10, 2011
    Applicant: Industrial Technology Research Institute
    Inventors: Wen-Tien Tsai, Bing-Chwen Yang, Hwei-Shung Chong, Chung-Yue Chen, Yie-Tone Chen, Yao-Te Huang, Li-Ling Lee