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).
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Publication number: 20150015534Abstract: 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: ApplicationFiled: December 26, 2013Publication date: January 15, 2015Applicant: Novatek Microelectronics Corp.Inventors: Shih-Jung Lu, Wing-Kai Tang
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Publication number: 20150015566Abstract: 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: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
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Patent number: 8913017Abstract: 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: GrantFiled: March 23, 2011Date of Patent: December 16, 2014Assignee: Novatek Microelectronics Corp.Inventors: Tsen-Wei Chang, Wing-Kai Tang, Ching-Chun Lin, Ching-Ho Hung, Hsien-Lung Chen, Jiun-Jie Tsai
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Patent number: 8884943Abstract: 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: GrantFiled: June 24, 2013Date of Patent: November 11, 2014Assignee: Novatek Microelectronics Corp.Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
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Publication number: 20140218102Abstract: 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: ApplicationFiled: July 16, 2013Publication date: August 7, 2014Inventors: Chia-Lun Hsu, Wing-Kai Tang
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Publication number: 20140097802Abstract: 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: ApplicationFiled: February 21, 2013Publication date: April 10, 2014Applicant: NOVATEK Microelectronics Corp.Inventors: Wing-Kai Tang, Cheng-Wen Chang
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Publication number: 20140062922Abstract: 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: ApplicationFiled: August 13, 2013Publication date: March 6, 2014Applicant: NOVATEK Microelectronics Corp.Inventor: Wing-Kai Tang
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Publication number: 20140002115Abstract: 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: ApplicationFiled: August 30, 2013Publication date: January 2, 2014Applicant: Novatek Microelectronics Corp.Inventors: Ching-Chun Lin, Wing-Kai Tang, Ching-Ho Hung, Tsen-Wei Chang, Yi-Liang Lin, Jiun-Jie Tsai
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Patent number: 8599185Abstract: 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: GrantFiled: September 24, 2010Date of Patent: December 3, 2013Assignee: Novatek Microelectronics Corp.Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
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Publication number: 20130285999Abstract: 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: ApplicationFiled: June 24, 2013Publication date: October 31, 2013Inventors: Jin-Sheng Hsieh, Hsueh-Yi Lee, Wing-Kai Tang
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Publication number: 20130279537Abstract: 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: ApplicationFiled: April 19, 2013Publication date: October 24, 2013Inventor: Wing-Kai TANG
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Patent number: 8547115Abstract: 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: GrantFiled: January 3, 2011Date of Patent: October 1, 2013Assignee: Novatek Microelectronics Corp.Inventors: Ching-Chun Lin, Wing-Kai Tang, Ching-Ho Hung, Tsen-Wei Chang, Yi-Liang Lin, Jiun-Jie Tsai
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Patent number: 8536881Abstract: 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: GrantFiled: October 1, 2010Date of Patent: September 17, 2013Assignee: Novatek Microelectronics Corp.Inventors: Ching-Chun Lin, Wing-Kai Tang, Ching-Ho Hung, Tsen-Wei Chang, Yi-Liang Lin, Jiun-Jie Tsai
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Patent number: 8462181Abstract: 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: GrantFiled: February 18, 2009Date of Patent: June 11, 2013Assignee: NOVATEK Microelectronics Corp.Inventors: Chung-Jian Li, Tzung-Yuan Lee, Shang-I Liu, Chia-Hsin Tung, Hao-Jan Huang, Wing-Kai Tang
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Publication number: 20130088502Abstract: 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: ApplicationFiled: April 24, 2012Publication date: April 11, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Cheng-Chung Shih, Wing-Kai Tang, Jin-Sheng Hsieh, Chia-Hsin Tung
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Publication number: 20130044089Abstract: 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: ApplicationFiled: June 8, 2012Publication date: February 21, 2013Applicant: 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
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Publication number: 20130044088Abstract: 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: ApplicationFiled: April 19, 2012Publication date: February 21, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Po-Chuan Chang-Chian, Chun-Yi Chou, Wing-Kai Tang, Ching-Chun Lin, Chih-Wei Tang
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Publication number: 20120319967Abstract: 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: ApplicationFiled: April 3, 2012Publication date: December 20, 2012Applicant: 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
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Publication number: 20120314392Abstract: 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: ApplicationFiled: April 30, 2012Publication date: December 13, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Wing-Kai Tang, Ching-Chun Lin, Hao-Jan Huang, Yu-Tsung Lu, Jiun-Jie Tsai, Tsen-Wei Chang
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Publication number: 20120313871Abstract: 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: ApplicationFiled: June 5, 2012Publication date: December 13, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Jiun-Jie Tsai, Tsen-Wei Chang, Yu-Tsung Lu, Hao-Jan Huang, Ching-Chun Lin, Wing-Kai Tang