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: 20120105373
    Abstract: A method for detecting a touch status of a surface of an input device, comprising: utilizing a first two-dimension (2D) image sensor disposed at a first location for capturing a first captured image of an object on the surface; and outputting a plurality of first positions of the object relative to the surface respectively by analyzing horizontal lines of the first captured image.
    Type: Application
    Filed: October 31, 2010
    Publication date: May 3, 2012
    Inventors: Chih-Min Liu, Yi-Cheng Chou
  • Patent number: 8130290
    Abstract: A black level compensation (BLC) circuit is disclosed. The BLC circuit includes a switched-capacitor (SC) integrator configured to compensate a readout amplifier of an image sensor. An output of the readout amplifier is clamped to a reference voltage at which a black level of the image sensor is defined. According to one aspect, a bad pixel detector is used to detect a bad pixel or pixels and disconnect the BLC loop when the bad pixel or pixels are detected.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: March 6, 2012
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Min Liu, Boh-Shun Chiu, Ping-Hung Yin
  • Publication number: 20120050182
    Abstract: A control signal generating method for an input device is presented. The input device includes a pointing device and a sensing device, and the pointing device sends an electromagnetic signal to the sensing device. In the method, the electromagnetic signal received by the sensing device has different strengths according to different distances between the pointing device and the sensing device. The strength of the electromagnetic signal may be further converted to a parameter. A user may adjust the distance between the pointing device and the sensing device when operating the pointing device, thereby generating a parameter to control a computer.
    Type: Application
    Filed: October 29, 2010
    Publication date: March 1, 2012
    Applicant: KYE SYSTEMS CORP.
    Inventor: Chih-Min Liu
  • Publication number: 20110284984
    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: Application
    Filed: May 18, 2010
    Publication date: November 24, 2011
    Inventors: Chih-Min Liu, Fang-Ming Huang, Ping-Hung Yin, Kuo-Chan Huang, Chung-Wei Chang
  • Patent number: 7995449
    Abstract: A system of sampling interface for an optical pick-up head comprises an optical pick-up head, a PMOS, a boost circuit, and a sample and hold circuit. The optical pick-up head outputs one of a reading voltage and a writing voltage. The PMOS gate receives the gate voltage and then the PMOS is turned on to pass the reading voltage to the sample and hold circuit. Moreover, the substrate of the PMOS receives a control voltage. The boost circuit is used to boost the gate voltage higher than the control voltage for turning off the PMOS and isolating the writing voltage.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: August 9, 2011
    Assignee: Tian Holdings, LLC
    Inventor: Chih-Min Liu
  • Patent number: 7990178
    Abstract: A driving circuit includes at least a driving unit. The driving circuit includes a first bias component, a second bias component, and four metal-oxide-semiconductor (MOS) transistors. The first bias component has a first node coupled to a first reference voltage and a second node for outputting a first bias current. The second bias component has a first node for draining a second bias current and a second node coupled to a second reference voltage different from the first reference voltage. Each of the MOS transistors has a control node for receiving one of input signal pairs, a node coupled to one of the bias components and another node coupled to one of the output ports of the driving circuit. The four MOS transistors are of a same conductive type.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: August 2, 2011
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Min Liu, Ping-Hung Yin
  • Publication number: 20110175599
    Abstract: An input device with dual induction coils and a rotation motion output method thereof are described, in which the input device moves on a trace capture device, such that the trace capture device outputs a trace signal to an electronic device. When the input device is rotated on the trace capture device, two coils within the input device respectively send an induction signal to the trace capture device. Then, the trace capture device respectively converts the two induction signals to two position signals, so as to determine displacement amounts and rotation directions of the two position signals, such that the trace capture device outputs a rotation signal to the electronic device, and the electronic device correspondingly executes a motion instruction according to the rotation signal.
    Type: Application
    Filed: May 4, 2010
    Publication date: July 21, 2011
    Applicant: KYE SYSTEMS CORP.
    Inventor: Chih Min Liu
  • Publication number: 20110128036
    Abstract: A driving circuit includes at least a driving unit. The driving circuit includes a first bias component, a second bias component, and four metal-oxide-semiconductor (MOS) transistors. The first bias component has a first node coupled to a first reference voltage and a second node for outputting a first bias current. The second bias component has a first node for draining a second bias current and a second node coupled to a second reference voltage different from the first reference voltage. Each of the MOS transistors has a control node for receiving one of input signal pairs, a node coupled to one of the bias components and another node coupled to one of the output ports of the driving circuit. The four MOS transistors are of a same conductive type.
    Type: Application
    Filed: December 1, 2009
    Publication date: June 2, 2011
    Inventors: Chih-Min Liu, Ping-Hung Yin
  • Publication number: 20110090148
    Abstract: A wearable input device includes a body and a soft battery. The body is connected to the soft battery to form a collar range, and the soft battery surrounds a hand of a user. The soft battery supplies an electric power to a finger-contact control module and a wireless transmitter in the body, such that the finger-contact control module senses a movement of an object (for example, a finger) on the body, and generates a control signal corresponding to a moving position of the object, and then the wireless transmitter transmits the control signal to a computer host, thus manipulating a cursor on an operating system frame of the computer host.
    Type: Application
    Filed: January 4, 2010
    Publication date: April 21, 2011
    Applicant: KYE SYSTEMS CORP.
    Inventors: Sheau-Lin Li, Tsu-Nan Lee, Chih-Min Liu
  • Publication number: 20110074740
    Abstract: A digital tablet for battery-free wireless pointer device and a power supply method of the digital tablet for battery-free wireless pointer device are related to a battery-free wireless pointer device and a digital tablet used in combination. The wireless pointer device includes a power supply circuit and an induction circuit. The digital tablet includes a signal processing circuit, a control circuit, a first antenna loop, and a plurality of second antenna loops. Here, the control circuit is adapted to selectively enable the second antenna loops.
    Type: Application
    Filed: November 3, 2009
    Publication date: March 31, 2011
    Applicant: KYE SYSTEMS CORP.
    Inventor: Chih Min Liu
  • Publication number: 20110058073
    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: Application
    Filed: September 8, 2009
    Publication date: March 10, 2011
    Applicant: HIMAX IMAGING, INC.
    Inventors: CHIH-MIN LIU, AMIT MITTRA, CHI-SHAO LIN
  • Patent number: 7902583
    Abstract: A capacitor pair structure for increasing the match thereof has two finger electrode structures interlacing with each other in parallel and a common electrode being between the two finger electrode structures to form a capacitor pair structure with an appropriate ratio. Also, the capacitor pair structure could further increase its entire capacitance through vias connecting the same capacitor pair structures on different metal layers.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: March 8, 2011
    Assignee: Via Technologies, Inc.
    Inventor: Chih-Min Liu
  • Publication number: 20110028453
    Abstract: Use of a compound that is a serotonin transporter inhibitor, a selective norepinephrine reuptake inhibitor, or a 5-HT1A agonist for alleviating negative symptoms in a schizophrenia patient who carries a defective neuregulin 1 gene.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 3, 2011
    Inventors: Wen-Mei Fu, Ya-Hsuan Chiang, Hai-Gwo Hwu, Chih-Min Liu
  • Patent number: 7863936
    Abstract: A driving circuit includes at least a driving unit, a first processing unit and a second processing unit. The driving circuit includes a first bias component, a second bias component, a first pre-emphasis unit, a second pre-emphasis unit, and a transmitter unit. The first bias component has a first node coupled to a first reference voltage and a second node for outputting a first bias current. The second bias component has a first node for draining a second bias current and a second node coupled to a second reference voltage different from the first reference voltage.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 4, 2011
    Assignee: Himax Imaging, Inc.
    Inventors: Chih-Min Liu, Ping-Hung Yin, Kuo-Chan Huang
  • Patent number: 7863666
    Abstract: A capacitor pair structure for increasing the match thereof has two finger electrode structures interlacing with each other in parallel and a common electrode being between the two finger electrode structures to form a capacitor pair structure with an appropriate ratio. Also, the capacitor pair structure could further increase its entire capacitance through vias connecting the same capacitor pair structures on different metal layers.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: January 4, 2011
    Assignee: Via Technologies, Inc.
    Inventor: Chih-Min Liu
  • Publication number: 20100309341
    Abstract: A black level compensation (BLC) circuit is disclosed. The BLC circuit includes a switched-capacitor (SC) integrator configured to compensate a readout amplifier of an image sensor. An output of the readout amplifier is clamped to a reference voltage at which a black level of the image sensor is defined. According to one aspect, a bad pixel detector is used to detect a bad pixel or pixels and disconnect the BLC loop when the bad pixel or pixels are detected.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 9, 2010
    Inventors: Chih-Min Liu, Boh-Shun Chiu, Ping-Hung Yin
  • Publication number: 20100276214
    Abstract: A tablet of a battery-free wireless pointing device has a battery-free wireless pointing device and a tablet. The wireless pointing device includes a power supply circuit and a sensing circuit. The tablet includes a signal processing unit, a first antenna loop, and a second antenna loop. The sensing circuit receives electric energy generated by the power supply and generates a sensing signal. The second antenna loop receives the sensing signal. The signal processing circuit generates a frequency signal and determines a current coordinate position of the pointing device according to the sensing signal.
    Type: Application
    Filed: June 29, 2009
    Publication date: November 4, 2010
    Applicant: KYE SYSTEMS CORP.
    Inventors: Chih-Min Liu, Chih-Ming Liu
  • Patent number: 7825691
    Abstract: A transmission circuit and related method are disclosed. A transmitter in the transmission circuit has CMOS transistors as driving units for responding an input signal to drive an output signal at an output node, and each driving unit has a corresponding charge unit formed by a capacitor-connected MOS of a same type as that of the corresponding driving unit. Each charge unit is controlled by an auxiliary signal inverse to the input signal. When a level transition occurs in the input signal, the charge unit can compensate charge injection and clock feed-through caused by the driving unit at the output node, and form peaks for pre-emphasis. In this way, a better transmission property can be realized by using a simpler and low-power circuit design.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: November 2, 2010
    Assignee: VIA Technologies Inc.
    Inventor: Chih-Min Liu
  • Patent number: 7759905
    Abstract: A linear battery chargers is disclosed which comprises a current generator, a current detector, an operational amplifier, and a multiplexing device. The current generator provides current to charge a battery module, and the current is detected and transformed to a detected voltage by the current detector. The operational amplifier has an output terminal coupled to a control terminal of the current generator. In a constant current charge mode, the multiplexing device couples a first reference voltage and the detected voltage to first and second input terminals of the operational amplifier, respectively. The current generated by the current generator is maintained at a constant current level. In a constant voltage charge mode, the multiplexing device couples a second reference voltage and the voltage level of the battery module to the first and second input terminals of the operational amplifier, respectively. The voltage level of the battery module gradually approaches a constant voltage level.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: July 20, 2010
    Assignee: Via Technologies, Inc.
    Inventor: Chih-Min Liu
  • Publication number: 20100135135
    Abstract: A system of sampling interface for an optical pick-up head comprises an optical pick-up head, a PMOS, a boost circuit, and a sample and hold circuit. The optical pick-up head outputs one of a reading voltage and a writing voltage. The PMOS gate receives the gate voltage and then the PMOS is turned on to pass the reading voltage to the sample and hold circuit. Moreover, the substrate of the PMOS receives a control voltage. The boost circuit is used to boost the gate voltage higher than the control voltage for turning off the PMOS and isolating the writing voltage.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 3, 2010
    Inventor: Chih-Min Liu