Patents by Inventor Sheng-Feng Lee

Sheng-Feng Lee 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: 9859900
    Abstract: A jitter control circuit within a chip comprises an adaptive PDN, a current generator and a jitter generator. The adaptive PDN is capable of being controlled/modulated to provide difference impedances. The current generator is coupled to the adaptive PDN, and is arranged for receiving a supply voltage provided by the adaptive PDN and generating currents with different patterns. The jitter generator is coupled to the adaptive PDN, and is arranged for generating a plurality of jitters corresponding to the currents with different patterns, respectively, according to the supply voltage provided by the adaptive PDN.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: January 2, 2018
    Assignee: MediaTek Inc.
    Inventors: Shang-Pin Chen, Sheng-Feng Lee
  • Publication number: 20160359488
    Abstract: A jitter control circuit within a chip comprises an adaptive PDN, a current generator and a jitter generator. The adaptive PDN is capable of being controlled/modulated to provide difference impedances. The current generator is coupled to the adaptive PDN, and is arranged for receiving a supply voltage provided by the adaptive PDN and generating currents with different patterns. The jitter generator is coupled to the adaptive PDN, and is arranged for generating a plurality of jitters corresponding to the currents with different patterns, respectively, according to the supply voltage provided by the adaptive PDN.
    Type: Application
    Filed: April 6, 2016
    Publication date: December 8, 2016
    Inventors: Shang-Pin Chen, Sheng-Feng Lee
  • Publication number: 20160173082
    Abstract: A method and apparatus for performing impedance profile control of a power delivery network (PDN) in an electronic device are provided. The method includes the steps of: utilizing a capacitive component and a resistive component that are coupled in series as an output stage of the PDN, wherein the capacitive component includes one terminal coupled to a first voltage level of the PDN and further includes another terminal, and the resistive component includes a first terminal coupled to the other terminal of the capacitive component and further includes a second terminal coupled to a second voltage level of the PDN; and inputting a control signal into a third terminal of the resistive component, to control an impedance profile of the output stage of the PDN, wherein in a predetermined state of the control signal, the control signal is a time variant signal. The control signal may be digital or analog.
    Type: Application
    Filed: August 20, 2015
    Publication date: June 16, 2016
    Inventors: Shang-Pin Chen, Sheng-Feng Lee
  • Patent number: 8441583
    Abstract: A thin touch panel includes a transparent substrate with a black bordering around the inner surface of the transparent substrate. A plurality of metal connecting structures, metal guiding lines, transparent insulating structures and a transparent sensing layer are formed on the inner surface, so that the transparent substrate not only provides a touch surface, but also has the touch sensing ability, to decrease the manufacture material and increase the transmittance of the touch panel. Besides, the manufacture of the thin touch panel may not use any optical adhesive to decrease the manufacture cost and improve the yield. Further, the thin touch panel may satisfy the trend of thin design.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: May 14, 2013
    Assignee: Buwon Advanced Technology Co., Ltd.
    Inventors: Sheng-Feng Lee, Ching-Hsien Wen
  • Patent number: 8339527
    Abstract: A thin touch panel includes a transparent substrate with a black bordering around the inner surface of the transparent substrate. A plurality of metal connecting structures, metal guiding lines, transparent insulating structures and a transparent sensing layer are formed on the inner surface, so that the transparent substrate not only provides a touch surface, but also has the touch sensing ability, to decrease the manufacture material and increase the transmittance of the touch panel. Besides, the manufacture of the thin touch panel may not use any optical adhesive to decrease the manufacture cost and improve the yield. Further, the thin touch panel may satisfy the trend of thin design.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: December 25, 2012
    Assignee: Buwon Advanced Coating Technology Co., Ltd.
    Inventors: Sheng-Feng Lee, Ching-Hsien Wen
  • Patent number: 8010065
    Abstract: A power amplifier system, a control method thereof, and a control device thereof are provided. The power amplifier system operates in a non-linear switching mode according to an envelope amplitude of an input signal under control of the control device. When the power amplifier is operated in the non-linear switching mode, a supply voltage and an input signal of the power amplifier are provided to the power amplifier by the control device according to pre-measured properties of the power amplifier so as to equip the power amplifier with a high power-added efficiency (PAE) and a better linearity.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 30, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Ping-Hsun Wu, Chang-Ming Lai, Sheng-Feng Lee, Je-Kuan Jau
  • Publication number: 20110007005
    Abstract: A thin touch panel includes a transparent substrate with a black bordering around the inner surface of the transparent substrate. A plurality of metal connecting structures, metal guiding lines, transparent insulating structures and a transparent sensing layer are formed on the inner surface, so that the transparent substrate not only provides a touch surface, but also has the touch sensing ability, to decrease the manufacture material and increase the transmittance of the touch panel. Besides, the manufacture of the thin touch panel may not use any optical adhesive to decrease the manufacture cost and improve the yield. Further, the thin touch panel may satisfy the trend of thin design.
    Type: Application
    Filed: March 18, 2010
    Publication date: January 13, 2011
    Inventors: SHENG-FENG LEE, CHING-HSIEN WEN
  • Patent number: 7689568
    Abstract: A communication system comprises a bridge device being configured to manage multi-channel communications, a host terminal coupled to the bridge device through a first network, a participant terminal coupled to the bridge device through a second network, and a broadcasting device coupled to at least one of the host terminal and the bridge device for broadcasting at least one of the participant signals from the participant terminal and the host signals from the host terminal. The host terminal is configured to receive host signals and to transmit the host signals to the bridge device. The participant terminal is configured to receive participant signals and to transmit the participant signals to the bridge device.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 30, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Johnsee Lee, Ping-Hsun Wu, Sheng-Feng Lee, Wen-Shen Feng
  • Publication number: 20100033244
    Abstract: A power amplifier system, a control method thereof, and a control device thereof are provided. The power amplifier system operates in a non-linear switching mode according to an envelope amplitude of an input signal under control of the control device. When the power amplifier is operated in the non-linear switching mode, a supply voltage and an input signal of the power amplifier are provided to the power amplifier by the control device according to pre-measured properties of the power amplifier so as to equip the power amplifier with a high power-added efficiency (PAE) and a better linearity.
    Type: Application
    Filed: October 31, 2008
    Publication date: February 11, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ping-Hsun Wu, Chang-Ming Lai, Sheng-Feng Lee, Je-Kuan Jau
  • Publication number: 20080159508
    Abstract: A communication system comprises a bridge device being configured to manage multi-channel communications, a host terminal coupled to the bridge device through a first network, a participant terminal coupled to the bridge device through a second network, and a broadcasting device coupled to at least one of the host terminal and the bridge device for broadcasting at least one of the participant signals from the participant terminal and the host signals from the host terminal. The host terminal is configured to receive host signals and to transmit the host signals to the bridge device. The participant terminal is configured to receive participant signals and to transmit the participant signals to the bridge device.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Inventors: Johnsee Lee, Ping-Hsun Wu, Sheng-Feng Lee, Wen-Shen Feng