Patents by Inventor Wing-Kai Tang

Wing-Kai Tang 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: 20150015534
    Abstract: The touch panel includes a plurality of touch pads arranged in an array on the touch panel. Each of the touch pads are arranged in N columns and M rows, the touch pad in the ith column and in the jth row is coupled to the touch pad in the (i?1)th column and in the (j?1)th row and the touch pad in the (i+1)th column and in the (j+1)th row, or the touch pad in the ith column and in the jth row is coupled to the touch pad in the (i+1)th column and in the (j?1)th row and the touch pad in the (i?1)th column and in the (j+1)th row.
    Type: Application
    Filed: December 26, 2013
    Publication date: January 15, 2015
    Applicant: Novatek Microelectronics Corp.
    Inventors: Shih-Jung Lu, Wing-Kai Tang
  • Publication number: 20150015566
    Abstract: A driving apparatus of a display is disclosed. The driving apparatus includes a digital-to-analog converter (DAC) circuit, an output buffer circuit and a pre-charge circuit. The DAC circuit receives a display data with a digital format for generating a gray level voltage. The output buffer circuit is coupled to the DAC circuit, and has an output terminal to output an output signal. The output buffer circuit receives the gray level voltage and the output signal, and compares the gray level voltage and the output signal to generate a comparison result. The pre-charge circuit is coupled to the output buffer circuit, and generates a pre-charge output signal to the output terminal of the output buffer circuit according to the comparison result and a pre-charge enable signal.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
  • Patent number: 8913017
    Abstract: A touch sensing system including a touch interface, at least one sensing unit, and a switching unit is provided. The sensing unit is coupled to the touch interface. The touch sensing system is switched to a first sensing mode or a second sensing mode by the switching unit according to a control signal. When the touch sensing system is in the first sensing mode, the sensing unit senses a first sensing signal and a second sensing signal of the touch interface. On the other hand, when the touch sensing system is in the second sensing mode, the sensing unit senses the first sensing signal according to a driving signal. An electronic touch apparatus and a touch sensing method are also provided.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 16, 2014
    Assignee: Novatek Microelectronics Corp.
    Inventors: Tsen-Wei Chang, Wing-Kai Tang, Ching-Chun Lin, Ching-Ho Hung, Hsien-Lung Chen, Jiun-Jie Tsai
  • Patent number: 8884943
    Abstract: A driving apparatus of a display is disclosed. The driving apparatus includes a digital-to-analog converter (DAC) circuit, an output buffer circuit and a pre-charge circuit. The DAC circuit receives a display data with a digital format for generating a gray level voltage. The output buffer circuit is coupled to the DAC circuit, and receives the gray level voltage. The output buffer circuit has an output terminal to output a driving output signal. The pre-charge circuit is coupled to the output buffer circuit, and generates a pre-charge output signal according to the gray level voltage and a pre-charge enable signal, and outputs the pre-charge output signal to the output terminal of the output buffer circuit.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: November 11, 2014
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
  • Publication number: 20140218102
    Abstract: An integrated circuit (IC) including a high-speed signal input pin, a common node, a high-speed signal output pin, and a core circuit is provided. The high-speed signal input pin and the high-speed signal output pin are disposed on a package of the IC. The common node and the core circuit are disposed in the IC. The common node is directly and electrically coupled to the high-speed signal input pin. The high-speed signal output pin is directly and electrically coupled to the common node. A high-speed signal input terminal of the core circuit is directly and electrically coupled to the common node.
    Type: Application
    Filed: July 16, 2013
    Publication date: August 7, 2014
    Inventors: Chia-Lun Hsu, Wing-Kai Tang
  • Publication number: 20140097802
    Abstract: The present invention discloses a charging system for charging a capacitor. The charge system includes at least one unit gain buffer, driven by a plurality of driving voltages, each unit gain buffer having a positive input terminal for receiving a target voltage and a negative input terminal coupled to an output terminal, a plurality of switches coupled between the plurality of driving voltages and the capacitor, and a switch control waveform generator, coupled to the plurality of switches, for switching on one of the for a specific driving voltage among the plurality of driving voltages to drive one of the at least one unit gain buffer to charge the capacitor.
    Type: Application
    Filed: February 21, 2013
    Publication date: April 10, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Wing-Kai Tang, Cheng-Wen Chang
  • Publication number: 20140062922
    Abstract: A touch sensing device includes a plurality of first dimensional transparent electrodes and a plurality of second dimensional transparent electrodes, for forming a plurality of touch sensing points; one or more signal generators, for generating at least two orthogonal signals simultaneously coupled to at least two of the plurality of first dimensional transparent electrodes; one or more analog to digital converters for receiving a plurality of sensing signals from the plurality of second dimensional transparent electrodes; and one or more calculating units, for converting the plurality of sensing signals, to determine components of the at least two orthogonal signals in the plurality of sensing signals and locates at least one touch point on the plurality of touch sensing points.
    Type: Application
    Filed: August 13, 2013
    Publication date: March 6, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventor: Wing-Kai Tang
  • Publication number: 20140002115
    Abstract: A capacitance sensing method is provided. The capacitance sensing method includes the following steps. During at least one first period of a sensing period, a capacitance under test is sensed through a first sensing channel, and a reference capacitance is sensed through a second sensing channel. During at least one second period of the sensing period, the reference capacitance is sensed through the first sensing channel, and the capacitance under test is sensed through the second sensing channel. A first difference is generated according to the capacitance under test and the reference capacitance.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 2, 2014
    Applicant: Novatek Microelectronics Corp.
    Inventors: Ching-Chun Lin, Wing-Kai Tang, Ching-Ho Hung, Tsen-Wei Chang, Yi-Liang Lin, Jiun-Jie Tsai
  • Patent number: 8599185
    Abstract: A driving apparatus of a display is disclosed. The driving apparatus mentioned above includes a digital-to-analog converter circuit and an output buffer circuit. The digital-to-analog converting circuit receives a display data with a digital format for generating a gray-level voltage. The output buffer circuit has an output terminal to output an output signal. The output buffer circuit receives the gray-level voltage, a pre-charge enable signal and the output signal and provides a pre-charge output signal to the output terminal of the output buffering circuit according to the pre-charge enable signal and a comparison result of the gray-level voltage and the output signal.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: December 3, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
  • Publication number: 20130285999
    Abstract: A driving apparatus of a display is disclosed. The driving apparatus includes a digital-to-analog converter (DAC) circuit, an output buffer circuit and a pre-charge circuit. The DAC circuit receives a display data with a digital format for generating a gray level voltage. The output buffer circuit is coupled to the DAC circuit, and receives the gray level voltage. The output buffer circuit has an output terminal to output a driving output signal. The pre-charge circuit is coupled to the output buffer circuit, and generates a pre-charge output signal according to the gray level voltage and a pre-charge enable signal, and outputs the pre-charge output signal to the output terminal of the output buffer circuit.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 31, 2013
    Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
  • Publication number: 20130279537
    Abstract: A display panel temperature sensing apparatus, in an embodiment, includes a display panel, at least one temperature-sensing component, at least one passive device, and an oscillation circuit. The at least one temperature-sensing component is disposed on the display panel. The at least one passive device is coupled to the at least one temperature-sensing component to form a resistance-capacitance (RC) structure. The oscillation circuit is coupled to the RC structure and an output terminal of the oscillation circuit outputs a temperature-sensing signal.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 24, 2013
    Inventor: Wing-Kai TANG
  • Patent number: 8547115
    Abstract: A touch sensing system including a touch input interface and a capacitance sensing circuit is provided. The touch input interface includes a plurality of sensing capacitors for outputting a capacitance under test and a reference capacitance. The capacitance sensing circuit includes a first sensing channel, a second sensing channel, and a difference comparing unit. During a first period of the sensing period, the first sensing channel senses the capacitance under test, and the second sensing channel senses the reference capacitance. During a second period of the sensing period, the first sensing channel senses the reference capacitance, and the second sensing channel senses the capacitance under test. The difference comparing unit outputs a difference according to the capacitance under test and the reference capacitance. Additionally, a capacitance sensing method is also provided.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: October 1, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ching-Chun Lin, Wing-Kai Tang, Ching-Ho Hung, Tsen-Wei Chang, Yi-Liang Lin, Jiun-Jie Tsai
  • Patent number: 8536881
    Abstract: A touch sensing system which includes a touch input interface and a capacitance sensing circuit is provided. The touch input interface includes a plurality of sensing capacitors which output at least one waveform under test and at least one reference waveform. The capacitance sensing circuit includes a difference comparing unit. The difference comparing unit receives the waveform under test and the reference waveform and outputs a differential signal according to at least one positive edge difference and at least one negative edge difference between the waveform under test and the reference waveform. Furthermore, a capacitance sensing method is also provided.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: September 17, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ching-Chun Lin, Wing-Kai Tang, Ching-Ho Hung, Tsen-Wei Chang, Yi-Liang Lin, Jiun-Jie Tsai
  • Patent number: 8462181
    Abstract: A driving method for a display device provides a first input pixel data corresponding to a pixel, and generates a second input pixel data by multiplying the first input pixel data by a predetermined rate. Next, an output pixel data corresponding to the second input pixel data is obtained from a predetermined gamma curve. When receiving the first input pixel data, the output pixel data is used for driving a display panel, and the second input pixel data is used for driving a backlight module of the display panel.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: June 11, 2013
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chung-Jian Li, Tzung-Yuan Lee, Shang-I Liu, Chia-Hsin Tung, Hao-Jan Huang, Wing-Kai Tang
  • Publication number: 20130088502
    Abstract: A display driving device is disclosed. The display driving device includes an image data transmission interface, a frame buffer, and an over-driving processor. The image data transmission interface transmits image data, which is then received by and stored in the frame buffer. The over-driving processor is coupled to the image data transmission interface to receive current image data provided by the image data transmission interface, and also coupled to the frame buffer to receive previous image data saved in the frame buffer. In a dynamic display mode, the over-driving processor generates a display driving signal according to the previous image data and the current image data.
    Type: Application
    Filed: April 24, 2012
    Publication date: April 11, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Cheng-Chung Shih, Wing-Kai Tang, Jin-Sheng Hsieh, Chia-Hsin Tung
  • Publication number: 20130044089
    Abstract: A data transmission method applied in a display, which includes a display panel, is provided. The data transmission method includes the following steps of: providing a host controller and n display drivers, n is a natural number greater than 1; providing a communication link under mobile industry processor interface (MIPI), connecting the host controller to the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the respective n display drivers; employing the host controller for providing a command with a virtual channel parameter through the communication link under MIPI; when the virtual channel parameter corresponds to an ith virtual channel values Vci, an ith display driver executing corresponding operations in response to the command, while the rest n?1 display drivers ignoring the command, wherein i is a natural number smaller than or equal to n.
    Type: Application
    Filed: June 8, 2012
    Publication date: February 21, 2013
    Applicant: Novatek Microelectronics Corp.
    Inventors: Po-Chuan CHANG-CHIAN, Chun-Yi Chou, Wing-Kai Tang, Ching-Chun Lin, Kai-I Dai, Shu-Wei Chang, Chih-Wei Tang
  • Publication number: 20130044088
    Abstract: A data transmission method applied in a display, which includes a display panel, is provided. The data transmission method includes the following steps of: providing a host controller and n display drivers, n is a natural number greater than 1; providing a communication link under mobile industry processor interface (MIPI), connecting the host controller to the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the respective n display drivers; employing the host controller for providing a command with a virtual channel parameter through the communication link under MIPI; when the virtual channel parameter corresponds to an ith virtual channel values Vci, an ith display driver executing corresponding operations in response to the command, while the rest n?1 display drivers ignoring the command, wherein i is a natural number smaller than or equal to n.
    Type: Application
    Filed: April 19, 2012
    Publication date: February 21, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Po-Chuan Chang-Chian, Chun-Yi Chou, Wing-Kai Tang, Ching-Chun Lin, Chih-Wei Tang
  • Publication number: 20120319967
    Abstract: A single flexible printed circuit (FPC) board for connecting multiple modules including a thin film is provided. The thin film has a first module connecting portion, a second module connecting portion and a third module connecting portion. The first module connecting portion is located on a first side of the thin film. The second module connecting portion and the third module connecting portion are located on a second side of the thin film. The first side is opposite to the second side. At least one first line is disposed between the first module connecting portion and the second module connecting portion. At least one second line is disposed between the first module connecting portion and the third module connecting portion.
    Type: Application
    Filed: April 3, 2012
    Publication date: December 20, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Jiun-Jie Tsai, Ching-Chun Lin, Tsen-Wei Chang, Yu-Tsung Lu, Tzu-Jen Lo, Hao-Jan Huang, Wing-Kai Tang
  • Publication number: 20120314392
    Abstract: A capacitor array substrate includes a substrate, first traces, second traces, capacitors, connecting lines, and signal lines. The substrate has a first, a second, and a third side. The first side is connected with the second and the third side. The first traces are disposed on the substrate in parallel and are not vertical or parallel to the first side. The second traces are disposed on the substrate in parallel. The capacitors are disposed on the substrate at intersections of the first and the second traces and are connected to the first and the second traces. The connecting lines are disposed on the second and the third side of the substrate. Each connecting line is connected to a first and a second trace. The signal lines are disposed on the substrate. Each signal line is connected to a first or a second trace and transmits signals from the first side.
    Type: Application
    Filed: April 30, 2012
    Publication date: December 13, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Wing-Kai Tang, Ching-Chun Lin, Hao-Jan Huang, Yu-Tsung Lu, Jiun-Jie Tsai, Tsen-Wei Chang
  • Publication number: 20120313871
    Abstract: A touch panel and a display apparatus are provided. The touch panel includes a substrate, first sensing lines, second sensing lines, first extending portions, second extending portions, and insulation pads. The first sensing lines are disposed on the substrate in parallel with a first direction. The second sensing lines are disposed on the substrate in parallel with a second direction. The first sensing lines intersect the second sensing lines to define meshes. The first extending portions are connected to the first sensing lines and extended toward the meshes. The second extending portions are connected to the second sensing lines and extended toward the meshes. The first extending portions and the second extending portions are distributed next to each other in the meshes. The insulation pads are disposed at where the first sensing lines intersect the second sensing lines to insulate the first sensing lines from the second sensing lines.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Jiun-Jie Tsai, Tsen-Wei Chang, Yu-Tsung Lu, Hao-Jan Huang, Ching-Chun Lin, Wing-Kai Tang