Patents by Inventor Chih-Tien Chang

Chih-Tien Chang 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).

  • Patent number: 10268795
    Abstract: A method for timing optimization is disclosed. The method includes obtaining information on detour locations of a chip by performing a routing operation, establishing, through machine learning, a model that describes a relationship between an image map and the detour locations, generating predicted detour locations based on the model and the image map, determining the probability of detouring in a region of the predicted detour locations, determining a predicted detour net for a path in a region having a high probability of detour, and determining sensitivity of the path.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: April 23, 2019
    Assignee: Taiwan Semiconductor Manufacturing Company Ltd.
    Inventors: Yi-Lin Chuang, Chih-Tien Chang, Kuan-Hua Su, Szu-Ju Huang
  • Publication number: 20180307790
    Abstract: A method for timing optimization is disclosed. The method includes obtaining information on detour locations of a chip by performing a routing operation, establishing, through machine learning, a model that describes a relationship between an image map and the detour locations, generating predicted detour locations based on the model and the image map, determining the probability of detouring in a region of the predicted detour locations, determining a predicted detour net for a path in a region having a high probability of detour, and determining sensitivity of the path.
    Type: Application
    Filed: April 20, 2017
    Publication date: October 25, 2018
    Inventors: YI-LIN CHUANG, CHIH-TIEN CHANG, KUAN-HUA SU, SZU-JU HUANG
  • Patent number: 9698065
    Abstract: An apparatus, a system and a method are disclosed. An exemplary apparatus includes a wafer processing chamber. The apparatus further includes radiant heating elements disposed in different zones and operable to heat different portions of a wafer located within the wafer processing chamber. The apparatus further includes sensors disposed outside the wafer processing chamber and operable to monitor energy from the radiant heating elements disposed in the different zones. The apparatus further includes a computer configured to utilize the sensors to characterize the radiant heating elements disposed in the different zones and to provide a calibration for the radiant heating elements disposed in the different zones such that a substantially uniform temperature profile is maintained across a surface of the wafer.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: July 4, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Tien Chang, Sunny Wu, Jo Fei Wang, Jong-I Mou, Chin-Hsiang Lin
  • Patent number: 9450583
    Abstract: An input/output (IO) circuit with high voltage tolerance is provided. In an integrated circuit, the IO circuit includes a charge pump for generating a bias voltage higher than an internal operating voltage of the charge pump itself, and a switch between an external circuit and an internal circuit of the integrated circuit. When the switch conducts between the external circuit and the internal circuit, the switch provides a clamping voltage according to the bias voltage and a cross voltage of the switch, so that a voltage of the internal circuit is bounded by the clamping voltage to prevent the internal circuit from over-voltage.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: September 20, 2016
    Assignee: MSTAR SEMICONDUCTOR, INC.
    Inventors: Yao-Zhong Zhang, Ju-Ming Chou, Chih-Tien Chang
  • Publication number: 20160027708
    Abstract: An apparatus, a system and a method are disclosed. An exemplary apparatus includes a wafer processing chamber. The apparatus further includes radiant heating elements disposed in different zones and operable to heat different portions of a wafer located within the wafer processing chamber. The apparatus further includes sensors disposed outside the wafer processing chamber and operable to monitor energy from the radiant heating elements disposed in the different zones. The apparatus further includes a computer configured to utilize the sensors to characterize the radiant heating elements disposed in the different zones and to provide a calibration for the radiant heating elements disposed in the different zones such that a substantially uniform temperature profile is maintained across a surface of the wafer.
    Type: Application
    Filed: October 2, 2015
    Publication date: January 28, 2016
    Inventors: Chih-Tien Chang, Sunny Wu, Jo Fei Wang, Jong-I Mou, Chin-Hsiang Lin
  • Patent number: 9159597
    Abstract: An apparatus, a system and a method are disclosed. An exemplary apparatus includes a wafer processing chamber. The apparatus further includes radiant heating elements disposed in different zones and operable to heat different portions of a wafer located within the wafer processing chamber. The apparatus further includes sensors disposed outside the wafer processing chamber and operable to monitor energy from the radiant heating elements disposed in the different zones. The apparatus further includes a computer configured to utilize the sensors to characterize the radiant heating elements disposed in the different zones and to provide a calibration for the radiant heating elements disposed in the different zones such that a substantially uniform temperature profile is maintained across a surface of the wafer.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: October 13, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Tien Chang, Sunny Wu, Jo Fei Wang, Jong-I Mou, Chin-Hsiang Lin
  • Patent number: 8848795
    Abstract: An auto phase detection apparatus for automatically detecting a target sampling phase is provided. The auto phase detection apparatus includes a phase decider for generating a plurality of phase control signals; a sample clock generator, coupled to the phase decider, for generating a plurality of sample clock signals according to the phase control signals; an analog-to-digital converter (ADC), coupled to the sample clock generator, for converting an analog video signal to a digital signal according to the sample clock signals; a phase detector, coupled to the ADC and the phase decider, for generating a plurality of phase detection results according to the digital signal; and a motion detector, coupled to the ADC and the phase decider, for generating a motion detection result by detecting a motion in the digital signal. The phase decider determines the target sampling phase from the phase control signals according to the phase detection results and the motion detection result.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: September 30, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Kun-Nan Cheng, Chih-Tien Chang, Chit-Keng Huang
  • Patent number: 8633708
    Abstract: A current calibration method and the associated control circuit are provided. The method includes: providing a predetermined voltage to the differential output for obtaining an accurate current passing through the panel resistor during a calibration procedure and, providing a driving current to the differential output according to the accurate current during a normal operation procedure.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: January 21, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Chih-Tien Chang, Ju-Ming Chou
  • Patent number: 8633840
    Abstract: A determining method and apparatus thereof for a transition point of a sequence which can be applied to a decoder. The determining method determines the transition point of the sequence having N numbers, wherein the sequence is composed of a first value and a second value and N is a positive integer. The determining method includes determining the position the first value appearing consecutively in the sequence to determine a first interval; determining the position the second value appearing consecutively in the sequence to determine a second interval; and determining the longer interval between the first interval and the second interval, when the first interval is longer, determining an adjacency of the first interval and the second value as the transition point according to the first interval, and when the second interval is longer, determining an adjacency of the second interval and the first value as the transition point.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: January 21, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Po Lin Yeh, Chien-Hsing Lin, Jui-Hua Yeh, Shao Ping Hung, Chih-Tien Chang
  • Publication number: 20130306621
    Abstract: An apparatus, a system and a method are disclosed. An exemplary apparatus includes a wafer processing chamber. The apparatus further includes radiant heating elements disposed in different zones and operable to heat different portions of a wafer located within the wafer processing chamber. The apparatus further includes sensors disposed outside the wafer processing chamber and operable to monitor energy from the radiant heating elements disposed in the different zones. The apparatus further includes a computer configured to utilize the sensors to characterize the radiant heating elements disposed in the different zones and to provide a calibration for the radiant heating elements disposed in the different zones such that a substantially uniform temperature profile is maintained across a surface of the wafer.
    Type: Application
    Filed: May 15, 2012
    Publication date: November 21, 2013
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chih-Tien Chang, Sunny Wu, Jo Fei Wang, Jong-I Mou, Chin-Hsiang Lin
  • Publication number: 20130257397
    Abstract: A current calibration method and the associated control circuit are provided. The method includes: providing a predetermined voltage to the differential output for obtaining an accurate current passing through the panel resistor during a calibration procedure and, providing a driving current to the differential output according to the accurate current during a normal operation procedure.
    Type: Application
    Filed: May 30, 2013
    Publication date: October 3, 2013
    Inventors: Chih-Tien Chang, Ju-Ming Chou
  • Patent number: 8542181
    Abstract: A flat panel display device, LCD controller and associated method is provided. The flat panel display device includes a display panel, a lamp for providing a backlight source for the display panel, a power transformation module for providing a power source for the lamp, a non-volatile storage unit for storing program code, and a display controller. The display controller includes an image processing module for processing image data and outputting processed results to the display panel, and a digital pulse width modulation module for adjusting on and off time of the power transformation module according to a synchronization signal.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: September 24, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventors: Sterling Smith, Chih-Tien Chang
  • Patent number: 8497853
    Abstract: A flat panel display device, LCD controller and associated method is provided. The flat panel display device includes a display panel, a lamp for providing a backlight source for the display panel, a power transformation module for providing a power source for the lamp, a non-volatile storage unit for storing program code, and a display controller. The display controller includes an image processing module for processing image data and outputting processed results to the display panel, and a digital pulse width modulation module for adjusting on and off time of the power transformation module with reference to a synchronization signal.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: July 30, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventors: Sterling Smith, Chih-Tien Chang, Kuo-Feng Hsu, Cheng-Yu Lu, Song-Yi Lin, Guo-Kiang Hung
  • Patent number: 8476909
    Abstract: A current calibration method and the associated control circuit are provided. The method includes: providing a predetermined voltage to the differential output for obtaining an accurate current passing through the panel resistor during a calibration procedure and, providing a driving current to the differential output according to the accurate current during a normal operation procedure.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 2, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventors: Chih-Tien Chang, Ju-Ming Chou
  • Patent number: 8310384
    Abstract: A phase digitizing apparatus for generating a corresponding digital value in response to a phase of an input signal is provided. The phase digitizing apparatus includes a coarse phase generator, for generating a coarse phase code according to the phase of the input signal and a first time unit; a fine phase code generator, for generating a fine phase code according to the phase of the input signal and a second time unit; and a calculating unit, for generating the digital value according to the coarse phase code and the fine phase code; wherein the first time unit is greater than the second time unit.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 13, 2012
    Assignee: MStar Semiconductor, Inc.
    Inventors: Po Lin Yeh, Chien-Hsing Lin, Shao Ping Hung, Chih-Tien Chang, Chun-Chia Chen, Jui-Hua Yeh
  • Publication number: 20120056665
    Abstract: An input/output (IO) circuit with high voltage tolerance is provided. In an integrated circuit, the IO circuit includes a charge pump for generating a bias voltage higher than an internal operating voltage of the charge pump itself, and a switch between an external circuit and an internal circuit of the integrated circuit. When the switch conducts between the external circuit and the internal circuit, the switch provides a clamping voltage according to the bias voltage and a cross voltage of the switch, so that a voltage of the internal circuit is bounded by the clamping voltage to prevent the internal circuit from over-voltage.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 8, 2012
    Applicant: MStar Semiconductor, Inc.
    Inventors: Yao-Zhong Zhang, Ju-Ming Chou, Chih-Tien Chang
  • Publication number: 20110188600
    Abstract: A determining method and apparatus thereof for a transition point of a sequence which can be applied to a decoder. The determining method determines the transition point of the sequence having N numbers, wherein the sequence is composed of a first value and a second value and N is a positive integer. The determining method includes determining the position the first value appearing consecutively in the sequence to determine a first interval; determining the position the second value appearing consecutively in the sequence to determine a second interval; and determining the longer interval between the first interval and the second interval, when the first interval is longer, determining an adjacency of the first interval and the second value as the transition point according to the first interval, and when the second interval is longer, determining an adjacency of the second interval and the first value as the transition point.
    Type: Application
    Filed: November 16, 2010
    Publication date: August 4, 2011
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Po Lin Yeh, Chien-Hsing Lin, Jui-Hua Yeh, Shao Ping Hung, Chih-Tien Chang
  • Publication number: 20110187567
    Abstract: A phase digitizing apparatus for generating a corresponding digital value in response to a phase of an input signal is provided. The phase digitizing apparatus includes a coarse phase generator, for generating a coarse phase code according to the phase of the input signal and a first time unit; a fine phase code generator, for generating a fine phase code according to the phase of the input signal and a second time unit; and a calculating unit, for generating the digital value according to the coarse phase code and the fine phase code; wherein the first time unit is greater than the second time unit.
    Type: Application
    Filed: November 30, 2010
    Publication date: August 4, 2011
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Po Lin Yeh, Chien-Hsing Lin, Shao Ping Hung, Chih-Tien Chang, Chun-Chia Chen, Jui-Hua Yeh
  • Publication number: 20110157374
    Abstract: A circuit for calibrating a sync-on-green (SOG) signal includes a switching device for controlling whether to output an image signal; a reference voltage generator for providing a clamp reference voltage and a comparison reference voltage; a clamp circuit for receiving the clamp reference voltage to generate a clamp output; and a comparing device for comparing the reference voltage with the clamp output to generate the SOG signal.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 30, 2011
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Chih-Tien Chang, Tze Huei Kao, Da Wei Chiu
  • Publication number: 20110051009
    Abstract: An auto phase detection apparatus for automatically detecting a target sampling phase is provided. The auto phase detection apparatus includes a phase decider for generating a plurality of phase control signals; a sample clock generator, coupled to the phase decider, for generating a plurality of sample clock signals according to the phase control signals; an analog-to-digital converter (ADC), coupled to the sample clock generator, for converting an analog video signal to a digital signal according to the sample clock signals; a phase detector, coupled to the ADC and the phase decider, for generating a plurality of phase detection results according to the digital signal; and a motion detector, coupled to the ADC and the phase decider, for generating a motion detection result by detecting a motion in the digital signal. The phase decider determines the target sampling phase from the phase control signals according to the phase detection results and the motion detection result.
    Type: Application
    Filed: July 22, 2010
    Publication date: March 3, 2011
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Kun-Nan Cheng, Chih-Tien Chang, Chit-Keng Huang