Patents by Inventor Pang-Chan Hung
Pang-Chan Hung 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: 20150381197Abstract: A digital to analog converter is disclosed. The invention provides a digital to analog converter (DAC) including a plurality of voltage transmitting switches and a selecting signal decoder. The voltage transmitting switches respectively receive a plurality of input voltages, and output terminals of the voltage transmitting switches are commonly coupled to an output terminal of the digital to analog converter. The selecting signal decoder receives a plurality of selecting signals, and generates a plurality of transmitting enable signals to control the voltage transmitting switches. Wherein only one of the voltage transmitting switches is connected between each of the input voltages and the output terminal of the digital to analog converter.Type: ApplicationFiled: September 4, 2015Publication date: December 31, 2015Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Pang-Chan Hung
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Patent number: 9172390Abstract: A digital to analog converter is disclosed. The digital to analog converter includes a voltage selector, M voltage transmitting switches and a selecting signal decoder. The voltage selector receives N first voltages among a plurality of analog input voltages, and receives a plurality of digital selecting signals. The voltage selector selects at most one of the first voltages for providing to an output terminal. One terminals of the voltage transmitting switches receives M second voltages among the input voltages respectively, and the voltage transmitting switches are turned on or off according to M transmitting enable signals respectively. The selecting signal decoder generates the transmitting enable signals according to the selecting signals. Wherein, M and N are positive integers.Type: GrantFiled: January 14, 2013Date of Patent: October 27, 2015Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Pang-Chan Hung
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Patent number: 9142169Abstract: A digital to analog converter for a source driver chip of a liquid crystal display device is disclosed. The digital to analog converter comprises an output terminal for outputting an output voltage, a plurality of receiving terminals for receiving a plurality of Gamma voltages, and a plurality of transmission paths comprising a plurality of first-type transistors coupled between the plurality of receiving terminals and the output terminal, respectively, for outputting one of the plurality of Gamma voltages as the output voltage according to a digital select signal; wherein a first transmission path corresponding to a first receiving terminal receiving a first Gamma voltage closest to a middle voltage among the plurality of Gamma voltages has lower on-resistance than other transmission paths among the plurality of transmission paths when a same source-to-gate voltage is applied.Type: GrantFiled: January 8, 2013Date of Patent: September 22, 2015Assignee: NOVATEK Microelectronics Corp.Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Pang-Chan Hung
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Patent number: 9082171Abstract: An image processing device for reducing image noise and the method thereof are provided. The method for reducing image noise includes the following steps. A filtering operation is performed on a plurality of pixel values of a first image according to a high-pass (HP) filtering mask, a first default filtering mask and a second default filtering mask to obtain a high-pass filtering image, a first low-pass (LP) image and a second LP image, respectively. A difference between the first and the second LP images is calculated to obtain a LP difference image. A pixel weighting calculation is performed according to the HP image and the LP difference image to obtain a pixel weighting mask corresponding to the first image. The first image is calculated according to the pixel weighting mask and one of the first and the second LP images to obtain a noise reducing image.Type: GrantFiled: July 8, 2013Date of Patent: July 14, 2015Assignee: Industrial Technology Research InstituteInventors: Luo-Wei Tsai, Kual-Zheng Lee, Pang-Chan Hung
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Publication number: 20140321768Abstract: An image processing device for reducing image noise and the method thereof are provided. The method for reducing image noise includes the following steps. A filtering operation is performed on a plurality of pixel values of a first image according to a high-pass (HP) filtering mask, a first default filtering mask and a second default filtering mask to obtain a high-pass filtering image, a first low-pass (LP) image and a second LP image, respectively. A difference between the first and the second LP images is calculated to obtain a LP difference image. A pixel weighting calculation is performed according to the HP image and the LP difference image to obtain a pixel weighting mask corresponding to the first image. The first image is calculated according to the pixel weighting mask and one of the first and the second LP images to obtain a noise reducing image.Type: ApplicationFiled: July 8, 2013Publication date: October 30, 2014Inventors: Luo-Wei Tsai, Kual-Zheng Lee, Pang-Chan Hung
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Publication number: 20140163405Abstract: A physiological information measurement system includes at least one video capture unit, a calculating unit electrical coupled to the video capture unit and a display unit electrical coupled to the calculating unit. The video capture unit captures at least one video provided to the calculating unit. The calculating unit measures physiological information according to the video. The display unit shows the physiological information.Type: ApplicationFiled: June 20, 2013Publication date: June 12, 2014Inventors: PANG-CHAN HUNG, KUAL-ZHENG LEE, LUO-WEI TSAI
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Publication number: 20140026009Abstract: An integrated circuit includes an input unit, a core processor and M output buffers, where M is a natural number greater than 1. The input unit has an output control pin, and receives an output control signal. The core processor is coupled to the input unit, and receives the output control signal to provide M output control signals. The M output buffers are coupled to the core processor, and are time-division multiplexing and enabled in response to the M output control signals, respectively, to output M output signals in M operation periods, respectively.Type: ApplicationFiled: March 15, 2013Publication date: January 23, 2014Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Jhih-Siou CHENG, Pang-Chan Hung
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Publication number: 20140009373Abstract: A digital to analog converter for a source driver chip of a liquid crystal display device is disclosed. The digital to analog converter comprises an output terminal for outputting an output voltage, a plurality of receiving terminals for receiving a plurality of Gamma voltages, and a plurality of transmission paths comprising a plurality of first-type transistors coupled between the plurality of receiving terminals and the output terminal, respectively, for outputting one of the plurality of Gamma voltages as the output voltage according to a digital select signal; wherein a first transmission path corresponding to a first receiving terminal receiving a first Gamma voltage closest to a middle voltage among the plurality of Gamma voltages has lower on-resistance than other transmission paths among the plurality of transmission paths when a same source-to-gate voltage is applied.Type: ApplicationFiled: January 8, 2013Publication date: January 9, 2014Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Pang-Chan Hung
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Publication number: 20140009506Abstract: A digital to analog converter is disclosed. The digital to analog converter includes a voltage selector, M voltage transmitting switches and a selecting signal decoder. The voltage selector receives N first voltages among a plurality of analog input voltages, and receives a plurality of digital selecting signals. The voltage selector selects at most one of the first voltages for providing to an output terminal. One terminals of the voltage transmitting switches receives M second voltages among the input voltages respectively, and the voltage transmitting switches are turned on or off according to M transmitting enable signals respectively. The selecting signal decoder generates the transmitting enable signals according to the selecting signals. Wherein, M and N are positive integers.Type: ApplicationFiled: January 14, 2013Publication date: January 9, 2014Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Pang-Chan Hung
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Patent number: 8582816Abstract: A video analytics based object counting method which can obtain and process video frames from one or more video sources is proposed. By setting a variety of parameters, calculating a reference point, and a mapping table, a sampled referenced image can be constructed to obtain image pixels variation information according to these parameters. With the changed value of multiple sampling line segments and the pre-defined reference object, total object counts can be estimated by analyzing the whole number of the triggered sampling line segments and their directional states.Type: GrantFiled: March 16, 2012Date of Patent: November 12, 2013Assignee: Industrial Technology Research InstituteInventors: Kual-Zheng Lee, Luo-Wei Tsai, Pang-Chan Hung
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Publication number: 20130148848Abstract: A video analytics based object counting method which can obtain and process video frames from one or more video sources is proposed. By setting a variety of parameters, calculating a reference point, and a mapping table, a sampled referenced image can be constructed to obtain image pixels variation information according to these parameters. With the changed value of multiple sampling line segments and the pre-defined reference object, total object counts can be estimated by analyzing the whole number of the triggered sampling line segments and their directional states.Type: ApplicationFiled: March 16, 2012Publication date: June 13, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Kual-Zheng LEE, Luo-Wei Tsai, Pang-Chan Hung
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Publication number: 20130096439Abstract: A method and a system for heart rate measurement are provided. The method includes: capturing at least one image, detecting skin-like points by using a skin color detector, labeling the skin-like points and tracking at least one target to be measured, taking statistics on color values of the target at multiple time points, measuring the heart rate through frequency transformation. The method and the system are easy to setup fully an automatic contact-free measurement of multiple persons' heart rates at a time, and applicable in multiple regions of human body for heart rate measurement such as head and neck, arm, and palm regions.Type: ApplicationFiled: July 31, 2012Publication date: April 18, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Kual-Zheng Lee, Pang-Chan Hung, Luo-Wei Tsai
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Publication number: 20120307137Abstract: The present invention provides a lighting control module, a video camera comprising the same and a control method of the same. The video camera of the invention includes a sensing module, a light-emitting module and a control module. The sensing module receives a reflected light beam from a recording direction of the video camera, and generates an image of a scene in the recording direction. The light-emitting module emits a light toward the recording direction. Additionally, the lighting control module is connected to the light-emitting module for controlling the light-emitting module to periodically emit the light from a first brightness to a second brightness.Type: ApplicationFiled: August 8, 2012Publication date: December 6, 2012Inventors: Jen-Hui CHUANG, Kuo-Hua Lo, Pang-Chan Hung
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Patent number: 8253849Abstract: The present invention provides a lighting control module, a video camera comprising the same and a control method of the same. The video camera of the invention includes a sensing module, a light-emitting module and a control module. The sensing module receives a reflected light beam from a recording direction of the video camera, and generates an image of a scene in the recording direction. The light-emitting module emits a light toward the recording direction. Additionally, the lighting control module is connected to the light-emitting module for controlling the light-emitting module to periodically emit the light from a first brightness to a second brightness.Type: GrantFiled: May 24, 2010Date of Patent: August 28, 2012Assignee: National Chiao Tung UniversityInventors: Jen-Hui Chuang, Kuo-Hua Lo, Pang-Chan Hung
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Publication number: 20110102664Abstract: The present invention provides a lighting control module, a video camera comprising the same and a control method of the same. The video camera of the invention includes a sensing module, a light-emitting module and a control module. The sensing module receives a reflected light beam from a recording direction of the video camera, and generates an image of a scene in the recording direction. The light-emitting module emits a light toward the recording direction. Additionally, the lighting control module is connected to the light-emitting module for controlling the light-emitting module to periodically emit the light from a first brightness to a second brightness.Type: ApplicationFiled: May 24, 2010Publication date: May 5, 2011Inventors: Jen-Hui Chuang, Kuo-Hua Lo, Pang-Chan Hung