Patents by Inventor Shih-Tsung Yang
Shih-Tsung Yang 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: 9383856Abstract: A touch sensing circuit and method is provided. The touch sensing circuit discriminates a common voltage change of a display panel couple to the touch sensor in a touch panel display apparatus. The touch sensor comprises a plurality of sensor electrodes. The touch sensing circuit includes a plurality of channel circuits, each of which includes a reset switch and a sensing switch for alternately conducting an associated sensor electrode to a reset voltage and a charge collecting circuit. The channel circuits are divided to different groups that operate according to interleaving timings for encompassing possible common voltage changes.Type: GrantFiled: October 5, 2011Date of Patent: July 5, 2016Assignee: MStar Semiconductor, Inc.Inventors: Guo-Kiang Hung, Hsuan-I Pan, Ming-Chang Tsai, Meng-Chang Lee, Shih-Tsung Yang
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Patent number: 9063619Abstract: A touch sensing method suitable for a voltage-based capacitive touch device is disclosed. The voltage-based capacitive touch device includes a conductive sensing plane and a plurality of electrodes. The touch sensing method includes steps of: providing pre-determined driving signals to the electrodes, so as to form various types of voltage fields on the conductive sensing plane; measuring, at different time points, the charge quantity stored on the conductive sensing plane for each of the voltage fields, so as to provide a plurality of charge-storage measurement results; estimating whether or not a touch event occurs according to the charge-storage measurement results; and, calculating coordinates of touch inputs according to the charge-storage measurement results if the touch event occurs.Type: GrantFiled: March 15, 2012Date of Patent: June 23, 2015Assignee: Senmatrix Semiconductor, Inc.Inventor: Shih-Tsung Yang
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Publication number: 20130135248Abstract: A touch sensing method suitable for a voltage-based capacitive touch device is disclosed. The voltage-based capacitive touch device includes a conductive sensing plane and a plurality of electrodes. The touch sensing method includes steps of: providing pre-determined driving signals to the electrodes, so as to form various types of voltage fields on the conductive sensing plane; measuring, at different time points, the charge quantity stored on the conductive sensing plane for each of the voltage fields, so as to provide a plurality of charge-storage measurement results; estimating whether or not a touch event occurs according to the charge-storage measurement results; and, calculating coordinates of touch inputs according to the charge-storage measurement results if the touch event occurs.Type: ApplicationFiled: March 15, 2012Publication date: May 30, 2013Applicant: SENMATRIX SEMICONDUCTOR, INC.Inventor: Shih-Tsung YANG
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Publication number: 20120086656Abstract: A touch sensing circuit and method is provided. The touch sensing circuit discriminates a common voltage change of a display panel couple to the touch sensor in a touch panel display apparatus. The touch sensor comprises a plurality of sensor electrodes. The touch sensing circuit includes a plurality of channel circuits, each of which includes a reset switch and a sensing switch for alternately conducting an associated sensor electrode to a reset voltage and a charge collecting circuit. The channel circuits are divided to different groups that operate according to interleaving timings for encompassing possible common voltage changes.Type: ApplicationFiled: October 5, 2011Publication date: April 12, 2012Applicant: MSTAR SEMICONDUCTOR, INC.Inventors: Guo-Kiang Hung, Hsuan-I Pan, Ming-Chang Tsai, Meng-Chang Lee, Shih-Tsung Yang
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Patent number: 7440058Abstract: A liquid crystal display panel (LCD panel) includes an active component array substrate, an opposite substrate and an optically compensated birefringence type liquid crystal layer (OCB-type liquid crystal layer). The active component array substrate includes a first substrate, a plurality of first lines, a plurality of second lines, a plurality of pixel structures and a first alignment layer. The first alignment layer possesses a first orientation direction, and the included angle between the first orientation direction and the first lines is between 46 and 74 degree. The opposite substrate has a second alignment layer facing the active component array substrate, and the second alignment layer possesses a second orientation direction parallel to the first orientation direction. The OCB-type liquid crystal layer is disposed between the active component array substrate and the opposite substrate.Type: GrantFiled: August 4, 2006Date of Patent: October 21, 2008Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chao-Dong Syu, Shih-Tsung Yang, Chien-Lin Pan, Kuan-Chiun Hu, Hao-Ting Tien
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Publication number: 20080030665Abstract: A liquid crystal display panel (LCD panel) includes an active component array substrate, an opposite substrate and an optically compensated birefringence type liquid crystal layer (OCB-type liquid crystal layer). The active component array substrate includes a first substrate, a plurality of first lines, a plurality of second lines, a plurality of pixel structures and a first alignment layer. The first alignment layer possesses a first orientation direction, and the included angle between the first orientation direction and the first lines is between 46 and 74 degree. The opposite substrate has a second alignment layer facing the active component array substrate, and the second alignment layer possesses a second orientation direction parallel to the first orientation direction. The OCB-type liquid crystal layer is disposed between the active component array substrate and the opposite substrate.Type: ApplicationFiled: August 4, 2006Publication date: February 7, 2008Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chao-Dong Syu, Shih-Tsung Yang, Chien-Lin Pan, Kuan-Chiun Hu, Hao-Ting Tien
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Patent number: 7290903Abstract: A projection display includes a housing, a display panel, a power plug for electrically connecting to an external power source and receiving power provided by the external power source, a light source electrically connected to the power plug for emitting light onto the display panel when receiving power from the power plug, a heat-ventilating device for ventilating heat generated by the light source to a region outside of the housing, a power storage device for storing power, and a power detector electrically connected to the heat-ventilating device, the power storage device, and the power plug for selectively electrically connecting the heat-ventilating device either to the power plug or to the power storage device.Type: GrantFiled: October 26, 2005Date of Patent: November 6, 2007Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Wen-Chih Tai, Shih-Tsung Yang, Chia-Lin Liu, Chi-Neng Mo
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LIQUID CRYSTAL DISPLAY PANEL, FABRICATING METHOD THEREOF AND SEALANT OF LIQUID CRYSTAL DISPLAY PANEL
Publication number: 20070110923Abstract: A method of fabricating a liquid crystal display panel is provided. The method includes the following steps. First, a first substrate and a second substrate are provided, and an alignment film is respectively formed on the first and second substrate. Then, a sealant and a liquid crystal layer are formed between the first substrate and the second substrate, and the liquid crystal layer disposed between the first and second substrates is enclosed by the sealant. Wherein, the total ion concentration of the sealant is lower than 30 ppm with the concentration of Na+ lower than 10 ppm, the concentration of K+ lower than 5 ppm, the concentration of Mg+2 lower than 5 ppm and the concentration of Ca+2 lower than 5 ppm. Furthermore, a liquid crystal display panel and the sealant of a liquid crystal display panel are provided.Type: ApplicationFiled: November 24, 2005Publication date: May 17, 2007Inventors: Yu-Hsien Chen, Shih-Tsung Yang, Kuo-Sheng Sun, Huai-An Li, Yu-Cheng Lo, Sheng-Fa Liu, Kun-Hong Chen, Jyh-Hong Jaw -
Publication number: 20070091621Abstract: A projection display includes a housing, a display panel, a power plug for electrically connecting to an external power source and receiving power provided by the external power source, a light source electrically connected to the power plug for emitting light onto the display panel when receiving power from the power plug, a heat-ventilating device for ventilating heat generated by the light source to a region outside of the housing, a power storage device for storing power, and a power detector electrically connected to the heat-ventilating device, the power storage device, and the power plug for selectively electrically connecting the heat-ventilating device either to the power plug or to the power storage device.Type: ApplicationFiled: October 26, 2005Publication date: April 26, 2007Inventors: Wen-Chih Tai, Shih-Tsung Yang, Chia-Lin Liu, Chi-Neng Mo
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Patent number: 7183866Abstract: A method and apparatus for tuning a VCO circuit to provide desired modulations is described. In one embodiment, the method of the present invention uses a controlled voltage from a digital-to-analog converter to obtain VCO voltage/frequency characteristics. The VCO voltage/frequency characteristics are used to determine a VCO capacitance value as well as a charge pump current level for each frequency band of interest. For one embodiment, the VCO circuit includes a bank of switchable capacitors used to set the VCO capacitance value. The charge pump includes a number of switch-controlled current meters to set the charge pump current level. The VCO capacitors and charge pump current meters are controlled by an off-chip CPU.Type: GrantFiled: October 13, 2004Date of Patent: February 27, 2007Assignee: Microtune (San Diego), Inc.Inventors: Shih-Tsung Yang, Jonathon Y. Cheah, Ee Hong Kwek, Chun-Yip Antony Lau
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Publication number: 20050046506Abstract: A method and apparatus for tuning a VCO circuit to provide desired modulations is described. In one embodiment, the method of the present invention uses a controlled voltage from a digital-to-analog converter to obtain VCO voltage/frequency characteristics. The VCO voltage/frequency characteristics are used to determine a VCO capacitance value as well as a charge pump current level for each frequency band of interest. For one embodiment, the VCO circuit includes a bank of switchable capacitors used to set the VCO capacitance value. The charge pump includes a number of switch-controlled current meters to set the charge pump current level. The VCO capacitors and charge pump current meters are controlled by an off-chip CPU.Type: ApplicationFiled: October 13, 2004Publication date: March 3, 2005Inventors: Shih-Tsung Yang, Jonathon Cheah, Ee Kwek, Chun-Yip Lau
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Patent number: 6836192Abstract: A method and apparatus for tuning a VCO circuit to provide desired modulations is described. In one embodiment, the method of the present invention uses a controlled voltage from a digital-to-analog converter to obtain VCO voltage/frequency characteristics. The VCO voltage/frequency characteristics are used to determine a VCO capacitance value as well as a charge pump current level for each frequency band of interest. For one embodiment, the VCO circuit includes a bank of switchable capacitors used to set the VCO capacitance value. The charge pump includes a number of switch-controlled current meters to set the charge pump current level. The VCO capacitors and charge pump current meters are controlled by an off-chip CPU.Type: GrantFiled: January 16, 2002Date of Patent: December 28, 2004Assignee: Microtune (San Diego), Inc.Inventors: Shih-Tsung Yang, Jonathon Y. Cheah, Ee Hong Kwek, Chun-Yip Antony Lau
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Patent number: 6677814Abstract: Tuning of a filter circuit is accomplished by determining a real RC time constant value for the filter circuit, then comparing the real RC vale to a predetermined RC value. If the real RC value does not match the predetermined RC value, the real RC value is varied (e.g.Type: GrantFiled: January 17, 2002Date of Patent: January 13, 2004Assignee: Microtune (San Diego), Inc.Inventors: Eng Chuan Low, Jonathon Cheah, Shih-Tsung Yang, Christopher Yong Soon Fatt
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Publication number: 20030132799Abstract: Tuning of a filter circuit is accomplished by determining a real RC time constant value for the filter circuit, then comparing the real RC vale to a predetermined RC value. If the real RC value does not match the predetermined RC value, the real RC value is varied (e.g.Type: ApplicationFiled: January 17, 2002Publication date: July 17, 2003Inventors: Eng Chuan Low, Jonathan Cheah, Shih-Tsung Yang, Christopher Yong Soon Fatt