Patents by Inventor Wei-Cheng Tang

Wei-Cheng Tang 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).

  • Patent number: 8416968
    Abstract: An audio device and an audio input/output method are described, which is coupled to an audio port, and includes a capacitor, a load, an output amplifying module, and an input amplifying module. The capacitor and the load are coupled to the audio port. The output amplifying module is operated at a first working voltage, for outputting a first audio signal to the audio port. A direct current (DC) level of the first audio signal is substantially zero volts. The input amplifying module is operated at a second working voltage, in order to receive a second audio signal from the audio port. When the audio port is in an output state, the output amplifying module is enabled and the input amplifying module is disabled, and when the audio port is in an input state, the input amplifying module is enabled and the output amplifying module is disabled.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 9, 2013
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chung-Hang Tsai, Wei-Cheng Tang
  • Publication number: 20120285538
    Abstract: The present invention provides a dye compound of formula (I) or a salt thereof and a dye-sensitized solar cell using the dye compound: wherein R1 and R2 are, independently, H, C1-C12alkoxy or a halogen; and D1 and D2 are, independently, C1-C12alkyl, or D1, D2 and N form one of The dye compound is applicable to a dye-sensitized solar cell for increasing photoelectric efficiency of the dye-sensitized solar cell.
    Type: Application
    Filed: July 12, 2011
    Publication date: November 15, 2012
    Applicant: EVERLIGHT USA, INC.
    Inventors: Wei-Cheng Tang, Szu-Yu Lin
  • Patent number: 8284925
    Abstract: A jack detection circuit includes a transition circuit and an AD converter. The transition circuit linearizes analog signals sent from a switching circuit. The AD converter converts the linearized analog signals to digital output signals thereby decreasing the complexity of signal recognition.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: October 9, 2012
    Assignee: Realtek Semiconductor Corp.
    Inventors: Jui Yuan Tsai, Wen Chi Wang, Wei Cheng Tang
  • Patent number: 8203068
    Abstract: The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: June 19, 2012
    Assignee: Everlight USA, Inc.
    Inventors: Ming-Si Wu, Wei-Cheng Tang
  • Publication number: 20120042457
    Abstract: The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.
    Type: Application
    Filed: November 2, 2011
    Publication date: February 23, 2012
    Applicant: Everlight USA, Inc.
    Inventors: Ming-Si WU, Wei-Cheng TANG
  • Patent number: 7994864
    Abstract: A DC-coupled audio out unit is provided, including at least one regulator and at least one audio amplifier. The regulator is coupled to at least one power terminal of the audio amplifier.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: August 9, 2011
    Assignee: Mediatek Inc.
    Inventors: Hung-I Chen, Yen-Hsun Hsu, Sung-Han Wen, Wei-Cheng Tang
  • Publication number: 20110100462
    Abstract: A dye-sensitized solar cell, a photoanode thereof, and a method for manufacturing the same are disclosed. The photoanode of the dye-sensitized solar cell of the present invention is prepared by a porous semiconductor layer absorbing two kinds of organic sensitized dyes, and one organic sensitized dye is represented by the following formula (I): wherein, D1, D2, R1, R2, R3, R4, B, and n are defined the same as the specification. These two kinds of the organic sensitized dyes have comparative absorption peaks, so the photoanode of the present invention can absorb solar spectrum with larger wavelength range. Hence, the dye-sensitized solar cell using the photoanode of the present invention has excellent photoelectric conversion efficiency.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 5, 2011
    Applicant: Everlight USA, Inc.
    Inventors: Wei-Cheng Tang, Ming-Si Wu, Kuan-Wei Lee, Hsin-Yi Chen
  • Publication number: 20100148867
    Abstract: A DC-coupled audio out unit is provided, including at least one regulator and at least one audio amplifier. The regulator is coupled to at least one power terminal of the audio amplifier.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 17, 2010
    Applicant: MEDIATEK INC.
    Inventors: Hung-I Chen, Yen-Hsun Hsu, Sung-Han Wen, Wei-Cheng Tang
  • Publication number: 20100122729
    Abstract: The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.
    Type: Application
    Filed: January 22, 2009
    Publication date: May 20, 2010
    Applicant: Everlight USA, Inc.
    Inventors: Ming-Si Wu, Wei-Cheng Tang
  • Publication number: 20100054500
    Abstract: An audio device and an audio input/output method are described, which is coupled to an audio port, and includes a capacitor, a load, an output amplifying module, and an input amplifying module. The capacitor and the load are coupled to the audio port. The output amplifying module is operated at a first working voltage, for outputting a first audio signal to the audio port. A direct current (DC) level of the first audio signal is substantially zero volts. The input amplifying module is operated at a second working voltage, in order to receive a second audio signal from the audio port. When the audio port is in an output state, the output amplifying module is enabled and the input amplifying module is disabled, and when the audio port is in an input state, the input amplifying module is enabled and the output amplifying module is disabled.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 4, 2010
    Inventors: Chung-Hang TSAI, Wei-Cheng Tang
  • Publication number: 20080043944
    Abstract: A jack detection circuit includes a transition circuit and an AD converter. The transition circuit linearizes analog signals sent from a switching circuit. The AD converter converts the linearized analog signals to digital output signals thereby decreasing the complexity of signal recognition.
    Type: Application
    Filed: July 17, 2007
    Publication date: February 21, 2008
    Applicant: REALTEK SEMICONDUCTOR CORP.
    Inventors: Jui Yuan Tsai, Wen Chi Wang, Wei Cheng Tang