Patents by Inventor Guan-Ying Huang
Guan-Ying Huang 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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Patent number: 11190198Abstract: A switched capacitor circuit includes an output capacitor, a first transmission switch, a first reference buffer, a second transmission switch, a second reference buffer and a charge compensation circuit. The output capacitor includes a first terminal and a second terminal, wherein the first terminal is coupled to an output terminal of the switched capacitor circuit, and the second terminal is coupled to a reference node. The first transmission switch is coupled to the reference node. The first reference buffer is coupled to the first transmission switch. The second transmission switch is coupled to the reference node. The second reference buffer is coupled to the second transmission switch. The charge compensation circuit is coupled to the reference node.Type: GrantFiled: November 19, 2020Date of Patent: November 30, 2021Assignee: NOVATEK Microelectronics Corp.Inventors: Guan-Ying Huang, Chih-Yuan Chang
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Publication number: 20210103357Abstract: A driving method for reducing EMI of a touch display panel is provided. The touch display panel includes a common electrode layer. The driving method includes: applying a direct current (DC) voltage to the common electrode layer during a display period of the touch display panel; and applying a touch sensing signal to the common electrode layer during a touch sensing period of the touch display panel. The waveform of the touch sensing signal is a triangle wave, a sine wave, or the sine wave truncated by a window function.Type: ApplicationFiled: December 12, 2019Publication date: April 8, 2021Inventors: Yaw-Guang CHANG, Guan-Ying HUANG, Chang-Hui LIN
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Patent number: 10528158Abstract: An active stylus, a touch sensor, and a signal transmission and sensing method are provided. The active stylus comprises: an integrated circuit (IC) and a transmitting circuit. The IC comprises: a first modulator, a second modulator, and a mixer. The first modulator is utilized for modulating a first signal with a first frequency to generate a first frequency modulated signal. The second modulator is utilized for modulating a second signal with a second frequency to generate a second frequency modulated signal. The mixer is coupled to the first modulator and the second modulator, and utilized for mixing the first frequency modulated signal and the second frequency modulated signal to generate a mixed signal having the first frequency and the second frequency. The transmitting circuit is coupled to the IC, and utilized for transmitting the mixed signal to the touch sensor.Type: GrantFiled: August 7, 2017Date of Patent: January 7, 2020Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Guan-Ying Huang, Yaw-Guang Chang, Chang-Hui Lin
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Publication number: 20190042008Abstract: An active stylus, a touch sensor, and a signal transmission and sensing method are provided. The active stylus comprises: an integrated circuit (IC) and a transmitting circuit. The IC comprises: a first modulator, a second modulator, and a mixer. The first modulator is utilized for modulating a first signal with a first frequency to generate a first frequency modulated signal. The second modulator is utilized for modulating a second signal with a second frequency to generate a second frequency modulated signal. The mixer is coupled to the first modulator and the second modulator, and utilized for mixing the first frequency modulated signal and the second frequency modulated signal to generate a mixed signal having the first frequency and the second frequency. The transmitting circuit is coupled to the IC, and utilized for transmitting the mixed signal to the touch sensor.Type: ApplicationFiled: August 7, 2017Publication date: February 7, 2019Inventors: Guan-Ying Huang, Yaw-Guang Chang, Chang-Hui Lin
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Patent number: 10078392Abstract: A driver integrated circuit (IC) is arranged to selectively operate in a display mode and a touch-sensing mode when the driver IC is coupled to a touch display panel. When the driver IC operates in the display mode, the driver IC controls a plurality of common voltage lines of the touch display panel to have a common voltage. When the driver IC operates in the touch-sensing mode, the driver IC controls a first source line of the touch display panel which corresponds to a specific common voltage line, or controls a neighboring common voltage line of the specific common voltage line, to have a first signal pattern the same as the first signal pattern on the specific voltage line or to be floating, wherein the specific common voltage line is arranged to detect touch currently.Type: GrantFiled: August 18, 2015Date of Patent: September 18, 2018Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Guan-Ying Huang, Yaw-Guang Chang
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Patent number: 10055047Abstract: A driver integrated circuit (IC), arranged to selectively operate in a display mode, a self-capacitor mode and a mutual-capacitor mode when the driver IC is coupled to a touch display panel, wherein when the driver IC operates in the display mode, the driver IC outputs display data to a plurality of source lines of the touch display panel; when the driver IC operates in the self-capacitor mode, the driver controls the source lines to have a predetermined voltage; and when the driver IC operates in the mutual-capacitor mode, the driver IC sequentially sends an impulse signal to the source lines.Type: GrantFiled: June 26, 2015Date of Patent: August 21, 2018Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Guan-Ying Huang, Yaw-Guang Chang
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Patent number: 9543977Abstract: A decimatorless continuous-time delta-sigma analog-to-digital receiver includes a continuous-time delta-sigma modulator (CTDSM) that receives a receiving signal and is configured to encode analog signals into digital signals; and a demodulator that receives a digital output of the CTDSM and is configured to recover information content from the receiving signal.Type: GrantFiled: November 6, 2014Date of Patent: January 10, 2017Assignee: Himax Technologies LimitedInventors: Chang-Hui Lin, Yaw-Guang Chang, Guan-Ying Huang
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Publication number: 20160334916Abstract: The present invention is directed to a method of driving an in-cell touch screen. In one embodiment, adjacent common voltage (VCOM) electrodes, a source line and/or a gate line is set high-impedance, such that an equivalent capacitor is not possessed by the current VCOM electrode. In another embodiment, a gate line is set high-impedance in the touch sensing mode. A voltage waveform of the current VCOM electrode is applied to adjacent VCOM electrodes abutting the current VCOM electrode and/or to a source line, such that an equivalent capacitor has no effect on the current VCOM electrode.Type: ApplicationFiled: August 14, 2015Publication date: November 17, 2016Inventors: Guan-Ying Huang, Wei-Song Wang, Yaw-Guang Chang
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Patent number: 9495049Abstract: The touch-sensitive apparatus includes a touch sensing area, an analog-to-digital converter and a mixer. The touch sensing area has sensing pixels for receiving a touching signal to generate inducted signals. The analog-to-digital converter converts the inducted signals into digital signals. The mixer includes an in-phase multiplier, a quadrature multiplier, an in-phase summer, a quadrature summer and a Pythagorean operator. The in-phase multiplier multiplies each digital signal with a first reference signal to generate in-phase modulated signals. The quadrature multiplier multiplies each digital signal with a second reference signal to generate quadrature modulated signals. The in-phase summer respectively sums up elements of each modulated signal to generate in-phase values. The quadrature summer respectively sums up elements of each quadrature modulated signal to generate quadrature values.Type: GrantFiled: May 18, 2014Date of Patent: November 15, 2016Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Guan-Ying Huang, Yaw-Guang Chang, Chang-Hui Lin
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Publication number: 20160299620Abstract: A driver integrated circuit (IC) is arranged to selectively operate in a display mode and a touch-sensing mode when the driver IC is coupled to a touch display panel. When the driver IC operates in the display mode, the driver IC controls a plurality of common voltage lines of the touch display panel to have a common voltage. When the driver IC operates in the touch-sensing mode, the driver IC controls a first source line of the touch display panel which corresponds to a specific common voltage line, or controls a neighboring common voltage line of the specific common voltage line, to have a first signal pattern the same as the first signal pattern on the specific voltage line or to be floating, wherein the specific common voltage line is arranged to detect touch currently.Type: ApplicationFiled: August 18, 2015Publication date: October 13, 2016Inventors: Guan-Ying Huang, Yaw-Guang Chang
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Publication number: 20160283018Abstract: A driver integrated circuit (IC), arranged to selectively operate in a display mode, a self-capacitor mode and a mutual-capacitor mode when the driver IC is coupled to a touch display panel, wherein when the driver IC operates in the display mode, the driver IC outputs display data to a plurality of source lines of the touch display panel; when the driver IC operates in the self-capacitor mode, the driver controls the source lines to have a predetermined voltage; and when the driver IC operates in the mutual-capacitor mode, the driver IC sequentially sends an impulse signal to the source lines.Type: ApplicationFiled: June 26, 2015Publication date: September 29, 2016Inventors: Guan-Ying Huang, Yaw-Guang Chang
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Patent number: 9448122Abstract: A multi-point temperature sensing method for integrated circuit chips and a system of the same are revealed. The system includes at least one slave temperature sensor embedded at preset positions for measuring temperature of a block and a master temperature sensor embedded in an integrated circuit chip and electrically connected to each slave temperature sensor. Variations of the slave temperature sensor induced by variations of process, voltage and temperature are corrected by the master temperature sensor. Thus the area the temperature sensors required on the integrated circuit chip is dramatically reduced and the stability of the temperature control system is improved. The problem of conventional System-on-a-Chip that only a limited number of temperature sensors could be used due to the area they occupied can be solved.Type: GrantFiled: October 4, 2013Date of Patent: September 20, 2016Assignee: National Cheng Kung UniversityInventors: Soon-Jyh Chang, Guan-Ying Huang, Kuen-Jong Lee, Wen-Yu Su, Chung-Ho Chen, Lih-Yih Chiou, Chih-Hung Kuo, Chien-Hung Tsai, Chia-Min Lin
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Publication number: 20160080019Abstract: A decimatorless continuous-time delta-sigma analog-to-digital receiver includes a continuous-time delta-sigma modulator (CTDSM) that receives a receiving signal and is configured to encode analog signals into digital signals; and a demodulator that receives a digital output of the CTDSM and is configured to recover information content from the receiving signal.Type: ApplicationFiled: November 6, 2014Publication date: March 17, 2016Inventors: Chang-Hui Lin, Yaw-Guang Chang, Guan-Ying Huang
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Publication number: 20150331509Abstract: The touch-sensitive apparatus includes a touch sensing area, an analog-to-digital converter and a mixer. The touch sensing area has sensing pixels for receiving a touching signal to generate inducted signals. The analog-to-digital converter converts the inducted signals into digital signals. The mixer includes an in-phase multiplier, a quadrature multiplier, an in-phase summer, a quadrature summer and a Pythagorean operator. The in-phase multiplier multiplies each digital signal with a first reference signal to generate in-phase modulated signals. The quadrature multiplier multiplies each digital signal with a second reference signal to generate quadrature modulated signals. The in-phase summer respectively sums up elements of each modulated signal to generate in-phase values. The quadrature summer respectively sums up elements of each quadrature modulated signal to generate quadrature values.Type: ApplicationFiled: May 18, 2014Publication date: November 19, 2015Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: Guan-Ying HUANG, Yaw-Guang CHANG, Chang-Hui LIN
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Publication number: 20150199035Abstract: A stylus without active components includes a housing, and a resonant circuit, such as an LC resonant circuit, disposed in the housing. The resonant circuit is operatively configured to one of a plurality of resonant frequencies respectively associated with a plurality of function modes.Type: ApplicationFiled: March 5, 2014Publication date: July 16, 2015Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: YAW-GUANG CHANG, Guan-Ying Huang
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Patent number: 8933748Abstract: An active pen IC includes a plurality of pads coupled to receive a plurality of receive (RX) signals induced from a mobile device, the received RX signals constituting an original group of RX signals. The active pen IC also includes a permuting unit configured to permute the pads such that the received RX signals corresponding to the permuted pads constitute a generated group of RX signals.Type: GrantFiled: July 5, 2013Date of Patent: January 13, 2015Assignee: Himax Technologies LimitedInventors: Guan-Ying Huang, Yaw-Guang Chang
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Publication number: 20150008979Abstract: An active pen IC includes a plurality of pads coupled to receive a plurality of receive (RX) signals induced from a mobile device, the received RX signals constituting an original group of RX signals. The active pen IC also includes a permuting unit configured to permute the pads such that the received RX signals corresponding to the permuted pads constitute a generated group of RX signals.Type: ApplicationFiled: July 5, 2013Publication date: January 8, 2015Inventors: Guan-Ying Huang, YAW-GUANG CHANG
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Publication number: 20140341258Abstract: A multi-point temperature sensing method for integrated circuit chips and a system of the same are revealed. The system includes at least one slave temperature sensor embedded at preset positions for measuring temperature of a block and a master temperature sensor embedded in an integrated circuit chip and electrically connected to each slave temperature sensor. Variations of the slave temperature sensor induced by variations of process, voltage and temperature are corrected by the master temperature sensor. Thus the area the temperature sensors required on the integrated circuit chip is dramatically reduced and the stability of the temperature control system is improved. The problem of conventional System-on-a-Chip that only a limited number of temperature sensors could be used due to the area they occupied can be solved.Type: ApplicationFiled: October 4, 2013Publication date: November 20, 2014Applicant: NATIONAL CHENG KUNG UNIVERSITYInventors: SOON-JYH CHANG, GUAN-YING HUANG, KUEN-JONG LEE, WEN-YU SU, CHUNG-HO CHEN, LIH-YIH CHIOU, CHIH-HUNG KUO, CHIEN-HUNG TSAI, CHIA-MIN LIN
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Publication number: 20140049872Abstract: A metal-oxide-metal (MOM) capacitor able to reduce area of capacitor arrays is revealed. The MOM capacitor mainly includes at least three parallel conducting layers. Each parallel conducting layer consists of a first conductive plate, a second conductive plate disposed around the first conductive plate. There is a preset distance between the first conductive plate and the second conductive plate. The first conductive plates are electrically connected by at least one first via while the second conductive plates are electrically connected by at least one second via. Thereby, while being applied to capacitor arrays, the second conductive plates of the two adjacent MOM capacitors are connected together and shared with each other, so as to significantly reduce area of the capacitor array, improve circuit density and further optimize the layout efficiency of the chip design.Type: ApplicationFiled: August 16, 2012Publication date: February 20, 2014Applicants: HIMAX TECHNOLOGIES LIMITED, NCKU RESEARCH AND DEVELOPMENT FOUNDATIONInventors: Guan-Ying Huang, Jin-Fu Lin
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Patent number: 8477058Abstract: A method for a successive approximation register ADC which includes at least one capacitor array and a plurality of switches is provided, in which the capacitors of the capacitor array are one-to-one corresponding to the switches. The method includes the following steps: firstly, at least one multiplexer is configured. Then, a first comparison voltage is outputted based on the terminal voltages on the terminals of the capacitor array, and a comparison result is outputted according to the first comparison voltage and a second comparison voltage. Afterwards, a sequence of comparisons is controlled based on the comparison result to enter into a sequence of comparison phases. Finally, the switches are orderly selected, by the multiplexer based on the comparison phases, to switch directly according to the comparison result.Type: GrantFiled: October 12, 2011Date of Patent: July 2, 2013Assignees: NCKU Research and Development Foundation, Himax Technologies LimitedInventors: Soon-Jyh Chang, Guan-Ying Huang, Chung-Ming Huang