Patents by Inventor Wei Chuan Cheng

Wei Chuan 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).

  • Patent number: 10601419
    Abstract: A power delivery integrated circuit is installed within a cable, and a switch circuit applied to the power delivery integrated circuit includes a first switch module, a second switch module, and a logic controller. When a first terminal of the cable receives a first voltage and a second terminal of the cable receives a second voltage, the logic controller optionally makes the first switch module transmit the first voltage to an identification circuit of the power delivery integrated circuit, or makes the second switch module transmit the second voltage to the identification circuit.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: March 24, 2020
    Assignee: Etron Technology, Inc.
    Inventor: Wei-Chuan Cheng
  • Patent number: 10591941
    Abstract: A low dropout regulator with wide input supply voltage includes a controller, an comparing circuit, a feedback circuit, an adjustable source follower, and an adjustable driving circuit. The controller is used for detecting a supply voltage. The feedback circuit, the comparing circuit, the adjustable source follower, and the adjustable driving circuit are used for regulating an output voltage according to a reference voltage. When the adjustable source follower and the adjustable driving circuit operate in the low-voltage mode, the controller further activates a first parallel metal-oxide-semiconductor transistor in the adjustable source follower and a second parallel metal-oxide-semiconductor transistor in the adjustable driving circuit.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 17, 2020
    Assignee: Etron Technology, Inc.
    Inventors: Wei-Chuan Cheng, Keng-Yi Wu
  • Publication number: 20190324484
    Abstract: A low dropout regulator with wide input supply voltage includes a controller, an comparing circuit, a feedback circuit, an adjustable source follower, and an adjustable driving circuit. The controller is used for detecting a supply voltage. The feedback circuit, the comparing circuit, the adjustable source follower, and the adjustable driving circuit are used for regulating an output voltage according to a reference voltage. When the adjustable source follower and the adjustable driving circuit operate in the low-voltage mode, the controller further activates a first parallel metal-oxide-semiconductor transistor in the adjustable source follower and a second parallel metal-oxide-semiconductor transistor in the adjustable driving circuit.
    Type: Application
    Filed: April 24, 2019
    Publication date: October 24, 2019
    Inventors: Wei-Chuan Cheng, Keng-Yi Wu
  • Publication number: 20190165780
    Abstract: A power delivery integrated circuit is installed within a cable, and a switch circuit applied to the power delivery integrated circuit includes a first switch module, a second switch module, and a logic controller. When a first terminal of the cable receives a first voltage and a second terminal of the cable receives a second voltage, the logic controller optionally makes the first switch module transmit the first voltage to an identification circuit of the power delivery integrated circuit, or makes the second switch module transmit the second voltage to the identification circuit.
    Type: Application
    Filed: November 23, 2018
    Publication date: May 30, 2019
    Inventor: Wei-Chuan Cheng
  • Patent number: 8373473
    Abstract: A dual-loop phase lock loop includes a phase frequency detector, a first charge pump, a second charge pump, a first capacitor, a filter, a first adder, a voltage controlled delay line, and a frequency divider. The phase frequency detector is used for outputting a switch signal according to a reference clock and a divided feedback clock. The first charge pump and the first capacitor are used for generating a coarse control voltage according to the switch signal. The second charge pump, the filter, and the first adder are used for generating a fine control voltage according to the switch signal and the coarse control voltage. The voltage controlled delay line is used for outputting a feedback clock according to the coarse control voltage and the fine control voltage. The frequency divider is used for dividing the feedback clock to output the divided feedback clock.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: February 12, 2013
    Assignee: Etron Technology, Inc.
    Inventors: Wei-Chuan Cheng, Jiann-Chyi Sam Shieh
  • Patent number: 8353515
    Abstract: A three-dimensional game shaped as a pyramid or prism with four or more faces, in which each face has nine terraced levels that attenuate to the peak of the pyramid. Each level has a plurality of circular depressions for the placement of each player's playing pieces. The corresponding level of each face has the same number of circular depressions, and each consecutive higher level has two fewer depressions than its immediate lower level. The peak of the pyramid is truncated and has a single circular depression. The peak can only be occupied by one playing piece at a time.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: January 15, 2013
    Inventors: Wei Chuan Cheng, Chiat Jin J Lee, Jasmine Hannah Sze En Lee, Jeanette Faith Sze Yee Lee
  • Publication number: 20120043718
    Abstract: A three-dimensional game shaped as a pyramid or prism with four or more faces, in which each face has nine terraced levels that attenuate to the peak of the pyramid. Each level has a plurality of circular depressions for the placement of each player's playing pieces. The corresponding level of each face has the same number of circular depressions, and each consecutive higher level has two fewer depressions than its immediate lower level. The peak of the pyramid is truncated and has a single circular depression. The peak can only be occupied by one playing piece at a time.
    Type: Application
    Filed: August 19, 2010
    Publication date: February 23, 2012
    Inventors: Wei Chuan Cheng, Chiat Jin Lee, Jasmine Hannah Sze En Lee, Jeanette Faith Sze Yee Lee
  • Publication number: 20120019294
    Abstract: A dual-loop phase lock loop includes a phase frequency detector, a first charge pump, a second charge pump, a first capacitor, a filter, a first adder, a voltage controlled delay line, and a frequency divider. The phase frequency detector is used for outputting a switch signal according to a reference clock and a divided feedback clock. The first charge pump and the first capacitor are used for generating a coarse control voltage according to the switch signal. The second charge pump, the filter, and the first adder are used for generating a fine control voltage according to the switch signal and the coarse control voltage. The voltage controlled delay line is used for outputting a feedback clock according to the coarse control voltage and the fine control voltage. The frequency divider is used for dividing the feedback clock to output the divided feedback clock.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 26, 2012
    Inventors: Wei-Chuan Cheng, Jiann-Chyi Sam Shieh