Patents by Inventor Wen-Bo Liu

Wen-Bo Liu 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: 10550409
    Abstract: The present invention discloses a method of producing drimenol and/or drimenol derivatives by contacting a polypeptide with farnesyl pyrophosphate. Also provided is an amino acid sequence of a polypeptide useful in the methods of the invention and nucleic acid encoding the polypeptides of the invention. The method further provides host cells or organisms genetically modified to express the polypeptides of the invention and useful to produce drimenol and/or drimenol derivatives.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: February 4, 2020
    Assignee: Firmenich SA
    Inventors: Eric Wen-Bo Liu, Xiu-Feng He, Olivier Haefliger, Zong-Xia Yu, Pan Li
  • Publication number: 20190093131
    Abstract: The present invention discloses a method of producing drimenol and/or drimenol derivatives by contacting a polypeptide with farnesyl pyrophosphate. Also provided is an amino acid sequence of a polypeptide useful in the methods of the invention and nucleic acid encoding the polypeptides of the invention. The method further provides host cells or organisms genetically modified to express the polypeptides of the invention and useful to produce drimenol and/or drimenol derivatives.
    Type: Application
    Filed: November 7, 2016
    Publication date: March 28, 2019
    Applicant: Firmenich SA
    Inventors: Eric Wen-Bo LIU, Xiu-Feng HE, Olivier HAEFLIGER, Zong-Xia YU, Pan LI
  • Patent number: 7538588
    Abstract: Dual-function drivers capable of outputting LVDS or TMDS differential signals by sharing output terminals under differential modes. In the dual-function driver, an input control unit receives a first input signal compliant with a first specification in a first mode and a second input signal compliant with a second specification in a second mode by sharing a pair of input terminals, and a current steering circuit comprises first and second differential pairs. The input control unit enables the first and second differential pairs to output a first differential signal compliant with the first specification through a pair of output terminals during the first mode, and the input control unit disables the first differential pair and enables the second differential pair to output a second differential signal compliant with the second specification on the pair of output terminals during the second mode.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: May 26, 2009
    Assignee: Via Technologies, Inc.
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au
  • Patent number: 7511652
    Abstract: The comparison device includes a first through second comparators, a chop switching unit, a delta-sigma modulation unit, and a first through second compensation units. The chop switching unit transmits a first and a second signals to two input terminals of the first comparator during a first period, and inverses the first and second signals during a second period. The delta-sigma modulation unit compares the comparison results of two parallel comparators and generates the digital control codes for the comparators with the awareness of the chop switching unit. The first and the second compensation units adjust the threshold voltages of the comparators according to the digital control codes and a step size for calibrating the offset voltages of two comparators. The calibration scheme requiring no assumption on the input signal statistics is background thus the comparison device will not interrupt normal operation and is immune to PVT variations.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: March 31, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Wen-bo Liu, Szu-Kang Hsien, Yun Chiu
  • Patent number: 7471285
    Abstract: A combined transmission unit for TMDS signals and LVDS signals. A first (LVDS) transmission unit comprises a set of first input terminals to receive first data, and a second (TMDS) transmission unit comprises a set of second input terminals to receive second data. A switching controller enables the first transmission unit to transmit the first data to the first external input units through a pair of signal lines coupled to a set of common output line or enables the second transmission unit to transmit the second data to the second external input units through a pair of signal lines coupled to the set of common output line, according to a mode selection signal.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: December 30, 2008
    Assignee: Via Technologies, Inc.
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
  • Patent number: 7358873
    Abstract: A LVDS and TMDS dualfunction transmitter for both LVDS and TMDS output channels is disclosed, including an encoder and a serializer. The encoder encodes twenty eight bits of LVDS signals to thirty bits of TMDS signals. The serializer includes four serializer channels for converting the LVDS signals to a serial signal when a LVDS mode is enabled, or converting the TMDS signals to the serial signal when a TMDS mode is enabled. Wherein a first serializer channel is coupled to seven bits of the LVDS signals and outputting a first pair of differential signals. Second, third and fourth serializer channel are coupled to seven bits of the LVDS signals and ten bits of TMDS signals, and outputting a second, third and fourth pair of differential signals, respectively.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: April 15, 2008
    Assignee: Via Technologies, Inc.
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au
  • Patent number: 7353009
    Abstract: A combined transmission unit for TMDS signals and LVDS signals. First (LVDS) and second (TMDS) transmission units are both coupled to a first set of input terminals. A switching controller, according to a mode selection signal, enables the first transmission unit to transmit the first data on the set of input terminals to first external input units through a pair of first signal lines or enables the second transmission unit to transmit the first data on the set of input terminals to the second external input units through a pair of second signal lines.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: April 1, 2008
    Assignee: Via Technologies, Inc.
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
  • Patent number: 7256624
    Abstract: A combined output driver for TMDS signals and LVDS signals. First and second output drivers output first and second differential signals to a first external input unit and a second external input unit, respectively, through a pair of signal lines according to first and second input signals. In the second output driver, a driver buffer is coupled to a first voltage and a first node respectively to generate two control signals according to the second input signals. An output unit generates the second differential signal according to the two control signals. A power supply provides a second voltage higher than the first voltage to power the driver buffer and the output unit when the first output driver outputs the first differential signal to the first external input unit.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: August 14, 2007
    Assignee: Via Technologies, Inc.
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au
  • Patent number: 7256625
    Abstract: A combined output driver for TMDS signals and LVDS signals. A first output driver includes a first differential unit generating a first differential according to first input signals in a first mode and a first clamping device coupled between the first node and the first differential unit to clamp potentials at two power terminals below a second power voltage. The second output driver includes a second differential unit generating a second differential signal according to second input signals in a second mode and a second clamping device to clamp potentials at two output terminals of the second differential unit below the second power voltage.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: August 14, 2007
    Assignee: Via Technologies, Inc.
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au
  • Publication number: 20070127518
    Abstract: Dual-function drivers capable of outputting LVDS or TMDS differential signals by sharing output terminals under differential modes. In the dual-function driver, an input control unit receives a first input signal compliant with a first specification in a first mode and a second input signal compliant with a second specification in a second mode by sharing a pair of input terminals, and a current steering circuit comprises first and second differential pairs. The input control unit enables the first and second differential pairs to output a first differential signal compliant with the first specification through a pair of output terminals during the first mode, and the input control unit disables the first differential pair and enables the second differential pair to output a second differential signal compliant with the second specification on the pair of output terminals during the second mode.
    Type: Application
    Filed: November 3, 2006
    Publication date: June 7, 2007
    Applicant: VIA TECHNOLOGIES, INC.
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au
  • Patent number: 7228116
    Abstract: A combined transmission unit for TMDS signals and LVDS signals. A first (LVDS) transmission unit includes a set of first input terminals to receive first data, and a second (TMDS) transmission unit includes a set of second input terminals to receive second data. A phase locked loop (PLL) generates a first set of output clock signals to the first transmission unit in a first mode and a second set of output clock signals to the second transmission unit in a second mode according to a mode selection signal. The first and second transmission units are able to transmit the first data to the first and second external input units in the first and second modes respectively, according to the mode selection signal and the first and second sets of output clock signals.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: June 5, 2007
    Assignee: Via Technologies Inc.
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
  • Publication number: 20070103349
    Abstract: A LVDS and TMDS dualfunction transmitter for both LVDS and TMDS output channels is disclosed, including an encoder and a serializer. The encoder encodes twenty eight bits of LVDS signals to thirty bits of TMDS signals. The serializer includes four serializer channels for converting the LVDS signals to a serial signal when a LVDS mode is enabled, or converting the TMDS signals to the serial signal when a TMDS mode is enabled. Wherein a first serializer channel is coupled to seven bits of the LVDS signals and outputting a first pair of differential signals. Second, third and fourth serializer channel are coupled to seven bits of the LVDS signals and ten bits of TMDS signals, and outputting a second, third and fourth pair of differential signals, respectively.
    Type: Application
    Filed: October 2, 2006
    Publication date: May 10, 2007
    Applicant: VIA TECHNOLOGIES, INC.
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au
  • Publication number: 20050090215
    Abstract: A combined transmission unit for TMDS signals and LVDS signals. A first (LVDS) transmission unit includes a set of first input terminals to receive first data, and a second (TMDS) transmission unit includes a set of second input terminals to receive second data. A phase locked loop (PLL) generates a first set of output clock signals to the first transmission unit in a first mode and a second set of output clock signals to the second transmission unit in a second mode according to a mode selection signal. The first and second transmission units are able to transmit the first data to the first and second external input units in the first and second modes respectively, according to the mode selection signal and the first and second sets of output clock signals.
    Type: Application
    Filed: October 28, 2004
    Publication date: April 28, 2005
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
  • Publication number: 20050088430
    Abstract: A combined transmission unit for TMDS signals and LVDS signals. A first (LVDS) transmission unit comprises a set of first input terminals to receive first data, and a second (TMDS) transmission unit comprises a set of second input terminals to receive second data. A switching controller enables the first transmission unit to transmit the first data to the first external input units through a pair of signal lines coupled to a set of common output line or enables the second transmission unit to transmit the second data to the second external input units through a pair of signal lines coupled to the set of common output line, according to a mode selection signal.
    Type: Application
    Filed: October 28, 2004
    Publication date: April 28, 2005
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
  • Publication number: 20050088429
    Abstract: A combined transmission unit for TMDS signals and LVDS signals. First (LVDS) and second (TMDS) transmission units are both coupled to a first set of input terminals. A switching controller, according to a mode selection signal, enables the first transmission unit to transmit the first data on the set of input terminals to first external input units through a pair of first signal lines or enables the second transmission unit to transmit the first data on the set of input terminals to the second external input units through a pair of second signal lines.
    Type: Application
    Filed: October 28, 2004
    Publication date: April 28, 2005
    Inventors: Yu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
  • Publication number: 20050088428
    Abstract: A combined output driver for TMDS signals and LVDS signals. First and second output drivers output first and second differential signals to a first external input unit and a second external input unit, respectively, through a pair of signal lines according to first and second input signals. In the second output driver, a driver buffer is coupled to a first voltage and a first node respectively to generate two control signals according to the second input signals. An output unit generates the second differential signal according to the two control signals. A power supply provides a second voltage higher than the first voltage to power the driver buffer and the output unit when the first output driver outputs the first differential signal to the first external input unit.
    Type: Application
    Filed: October 28, 2004
    Publication date: April 28, 2005
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au
  • Publication number: 20050088431
    Abstract: A combined output driver for TMDS signals and LVDS signals. A first output driver includes a first differential unit generating a first differential according to first input signals in a first mode and a first clamping device coupled between the first node and the first differential unit to clamp potentials at two power terminals below a second power voltage. The second output driver includes a second differential unit generating a second differential signal according to second input signals in a second mode and a second clamping device to clamp potentials at two output terminals of the second differential unit below the second power voltage.
    Type: Application
    Filed: October 28, 2004
    Publication date: April 28, 2005
    Inventors: Wen-Bo Liu, Yu-Feng Cheng, Ken-Ming Li, Vai-Hang Au