Patents by Inventor Chih-Min Liu

Chih-Min 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).

  • Publication number: 20150214893
    Abstract: A circuit includes a voltage controlled oscillator (“VCO”) having a VCO cell. The VCO cell includes a first transistor and a second transistor. The first transistor has a gate terminal coupled to a first node that also is coupled to a low-pass filter from which the gate terminal receives a first control voltage signal. A second terminal of the first transistor is connected to a first voltage source. The second transistor has a gate terminal coupled to a second node that is disposed between a capacitor and a resistor of the low pass filter. The second transistor has a second terminal connected to the first voltage source. The second transistor is larger than the first transistor, and the VCO has an output terminal for providing an output frequency signal.
    Type: Application
    Filed: April 6, 2015
    Publication date: July 30, 2015
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventor: Chih-Min LIU
  • Patent number: 9024694
    Abstract: A system is disclosed for a voltage controlled oscillator (“VCO”) having a large frequency range and a low gain. Passive or active circuitry is introduced between at least one VCO cell in the voltage controlled oscillator and the voltage source for the VCO cell which reduces a gain value for the VCO to maintain stability of the system.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 5, 2015
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Chih-Min Liu
  • Patent number: 8942332
    Abstract: A system and method is disclosed for reducing inter symbol interference in a high speed data transfer system. One or more decision logic circuits and one or more pull circuits are used to enable the signal level of a bit in a serial bit stream to achieve its nominal value.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: January 27, 2015
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Chih-Min Liu
  • Patent number: 8847886
    Abstract: A non-contact input apparatus for computer peripheral includes an induction module and a pointing module. The induction module includes an electric supply coil and an induction element, and the pointing module includes an energy coil and a non-linear element. The electric supply coil is used to send a first oscillation signal. The energy coil receives the first oscillation signal. The non-linear element converts the first oscillation signal to be a second oscillation signal having multiple higher harmonics. The induction element generates a control signal based on the second oscillation signal.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 30, 2014
    Assignee: Kye Systems Corp.
    Inventors: Ho-Sung Wu, Chih-Min Liu
  • Publication number: 20140218118
    Abstract: A system is disclosed for a voltage controlled oscillator (“VCO”) having a large frequency range and a low gain. Passive or active circuitry is introduced between at least one VCO cell in the voltage controlled oscillator and the voltage source for the VCO cell which reduces a gain value for the VCO to maintain stability of the system.
    Type: Application
    Filed: February 6, 2013
    Publication date: August 7, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventor: Chih-Min LIU
  • Publication number: 20140210711
    Abstract: A touch panel, suitable for sensing a battery-free wireless cursor component, includes a display unit, a touch unit, a processor unit, and an antenna unit. The display unit has a first side and a second side opposite the first side. The touch unit, disposed on the first side of the display unit, receives a cursor signal generated by the battery-free wireless cursor component to generate a touch signal. The processor unit, coupled with the touch unit, receives the touch signal, calculates coordinates of the battery-free wireless cursor component based on the received touch signal, and generates a control signal based on the calculated coordinates. The antenna unit, disposed on the second side of the display unit and coupled with the processor unit, receives the control signal and transmits a frequency signal based on the control signal.
    Type: Application
    Filed: September 25, 2013
    Publication date: July 31, 2014
    Applicant: KYE SYSTEMS CORP.
    Inventor: Chih-Min LIU
  • Publication number: 20140169416
    Abstract: A system and method is disclosed for reducing inter symbol interference in a high speed data transfer system. One or more decision logic circuits and one or more pull circuits are used to enable the signal level of a bit in a serial bit stream to achieve its nominal value.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 19, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventor: Chih-Min LIU
  • Publication number: 20140138521
    Abstract: A Dual-Side Illumination (DSI) image sensor chip includes a first image sensor chip configured to sense light from a first direction, and a second image sensor chip aligned to, and bonded to, the first image sensor chip. The second image sensor chip is configured to sense light from a second direction opposite the first direction.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chih-Min Liu, Honyih Tu, Calvin Yi-Ping Chao, Fu-Lung Hsueh
  • Publication number: 20140138520
    Abstract: A Dual-Side Illumination (DSI) image sensor chip includes a first image sensor chip configured to sense light from a first direction, and a second image sensor chip aligned to, and bonded to, the first image sensor chip. The second image sensor chip is configured to sense light from a second direction opposite the first direction.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chih-Min Liu, Honyih Tu, Calvin Yi-Ping Chao, Fu-Lung Hsueh
  • Publication number: 20130285900
    Abstract: A manipulating device includes a first coil, an action unit, a control unit, a modulation unit, and a second coil. The first coil receives a charging signal to incur electromagnetic resonance, so as to generate an electric signal. The action unit generates an action signal. The control unit alternately generates a first control signal according to the electric signal in a first period and a second control signal according to the action signal in a second period. The modulation unit modulates the first control signal and the second control signal to generate a first modulated signal. The second coil generates an output signal according to the first modulated signal. A directional input apparatus uses the manipulating device and a sensing device to generate a directional control input signal. Therefore, the manipulating device uses the modulation unit and the second coil to transmit the output signal to the sensing device.
    Type: Application
    Filed: April 22, 2013
    Publication date: October 31, 2013
    Applicant: KYE SYSTEMS CORP.
    Inventor: Chih-Min LIU
  • Patent number: 8570196
    Abstract: A method for converting image data from serial to parallel is provided. The method has steps of: receiving serial data of an image into a line buffer according to a serial clock signal of the image, wherein the serial data at least comprises a frame start code, and a row start code; detecting the frame start code of the serial data in the line buffer to trigger a vertical synchronous signal of the image; and detecting the row start code of the serial data in the line buffer to trigger a horizontal synchronous signal of the image.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: October 29, 2013
    Assignee: Himax Imaging Limited
    Inventor: Chih-Min Liu
  • Publication number: 20130271399
    Abstract: An electromagnetic touch device is adapted to cooperate with a signal generation unit. The electromagnetic touch device includes a sensing unit and a control unit. The sensing unit includes a plurality of antenna modules which form a sensing zone, are adjacent to each other, do not overlap, and receive an electromagnetic signal generated by the signal generating unit, to generate a plurality of electromagnetic sensing signals. The control unit coupled to the antenna modules receives the electromagnetic induction signals and calculates a location of the signal generating unit in the sensing zone according to intensities of the electromagnetic sensing signals.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 17, 2013
    Applicant: KYE SYSTEMS CORP.
    Inventor: Chih-Min LIU
  • Publication number: 20130266231
    Abstract: A method for converting image data from serial to parallel is provided. The method has steps of: receiving serial data of an image into a line buffer according to a serial clock signal of the image, wherein the serial data at least comprises a frame start code, and a row start code; detecting the frame start code of the serial data in the line buffer to trigger a vertical synchronous signal of the image; and detecting the row start code of the serial data in the line buffer to trigger a horizontal synchronous signal of the image.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 10, 2013
    Applicant: HIMAX IMAGING LIMITED
    Inventor: Chih-Min LIU
  • Publication number: 20130128083
    Abstract: A high dynamic range (HDR) image sensing method is provided. The image sensor includes steps of: sensing an image with a long integration time by a first long integration time sensor; and sensing the image with a short integration time by a first short integration time sensor.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: Himax Imaging Limited
    Inventor: Chih-Min LIU
  • Patent number: 8350822
    Abstract: The present invention provides a touch pad operable with multi-objects and a method of operating such a touch pad. The touch pad includes a touch structure for sensing touch points of a first and a second object and a controller for generating corresponding touching signals and related position coordinates. Moreover, the controller calculates at least two movement amount indexes according to coordinate differences between these position coordinates, thereby generating a movement amount control signal to control behaviors of a software object.
    Type: Grant
    Filed: January 8, 2012
    Date of Patent: January 8, 2013
    Assignee: Elan Microelectronics Corp.
    Inventors: Wei-Wen Yang, Chih-Min Liu, Jian-Wei Chen
  • Patent number: 8278132
    Abstract: The present invention provides an image sensor and a fabricating method thereof capable of approaching higher quantum efficiency and reducing cost. The method comprises: providing a substrate; forming a pixel region on a top surface of the substrate; forming an interlayer insulating layer and at least a metal line on the pixel region; forming an isolation carrier layer having a hole array therein on the interlayer insulating layer; grinding a lower surface of the substrate to reduce the thickness of the substrate; placing a plurality of conductors into the hole array to form a plurality of bumps on the isolation carrier layer.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 2, 2012
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Min Liu, Fang-Ming Huang, Ping-Hung Yin, Kuo-Chan Huang, Chung-Wei Chang
  • Publication number: 20120242575
    Abstract: A non-contact input apparatus for computer peripheral includes an induction module and a pointing module. The induction module includes an electric supply coil and an induction element, and the pointing module includes an energy coil and a non-linear element. The electric supply coil is used to send a first oscillation signal. The energy coil receives the first oscillation signal. The non-linear element converts the first oscillation signal to be a second oscillation signal having multiple higherharmonics. The induction element generates a control signal based on the second oscillation signal.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: Kye Systems Corp.
    Inventors: Ho-Sung WU, Chih-Min Liu
  • Patent number: 8253827
    Abstract: A signal chain of an imaging system is disclosed. The system includes three circuit stages. The first circuit stage includes a programmable gain amplifier (PGA) and a black level compensation (BLC) circuit that form a BLC loop. The second circuit stage includes an analog-to-digital converter (ADC), where a dark signal offset is added at an input of the ADC. The third circuit stage includes a digital gain circuit and a digital loop that makes a final output of the imaging system settle on a target level in the BLC mode.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: August 28, 2012
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Min Liu, Amit Mittra, Chi-Shao Lin
  • Publication number: 20120119990
    Abstract: A pointer control system includes a pointer control device and a pointer sensing device. The pointer control device includes two coils. The two coils respectively transmit a first signal and a second signal to the pointer sensing device, so that the pointer sensing device senses a first coordinate and a second coordinate. The pointer sensing device outputs a control signal which is corresponding to a distance between the first coordinate and the second coordinate. Therefore, the pointer control system can use an angle formed between the pointer control device and the pointer sensing device to control the operation mode of the pointer.
    Type: Application
    Filed: November 12, 2010
    Publication date: May 17, 2012
    Applicant: KYE SYSTMES CORP.
    Inventor: Chih-Min LIU
  • Publication number: 20120119986
    Abstract: A three-dimensional (3D) control apparatus for a computer input device, used to sense 3D motion relations to output multiple 3D control signals, includes a first element comprising a plurality of sensing units and a second element comprising a plurality of transmitting coils. Each sensing unit of the first element has two adjacent receiving coils. The second element is capable of performing a 3D multi-axial motion with respect to the first element to generate multiple 3D control signals according to relative position relations between the plurality of transmitting coils and the plurality of receiving coils, so as to perform 3D control.
    Type: Application
    Filed: August 26, 2011
    Publication date: May 17, 2012
    Applicant: KYE SYSTEMS CORP.
    Inventors: Ho-Sung WU, Chih-Min Liu