Patents by Inventor Huan-Sen Liao

Huan-Sen Liao 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: 11138081
    Abstract: An error detecting system, comprising: a control circuit; and a first error detecting circuit, coupled to the control circuit, configure to detect error of input data. The control circuit controls the first error detecting circuit to use a first setting to detect the error in a first time period, controls the first error detecting circuit to use a second setting to detect the error in a second time period following the first time period, and controls the first error detecting circuit to generate a first detecting result corresponding to the first setting and the second setting after the detection corresponding to the first setting and the second setting are completed.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: October 5, 2021
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Ting-Mao Su, Chih-Hao Hung, Chang-Lung Wu, Huan-Sen Liao
  • Publication number: 20210089413
    Abstract: An error detecting system, comprising: a control circuit; and a first error detecting circuit, coupled to the control circuit, configure to detect error of input data. The control circuit controls the first error detecting circuit to use a first setting to detect the error in a first time period, controls the first error detecting circuit to use a second setting to detect the error in a second time period following the first time period, and controls the first error detecting circuit to generate a first detecting result corresponding to the first setting and the second setting after the detection corresponding to the first setting and the second setting are completed.
    Type: Application
    Filed: September 23, 2019
    Publication date: March 25, 2021
    Inventors: Ting-Mao Su, Chih-Hao Hung, Chang-Lung Wu, Huan-Sen Liao
  • Patent number: 10777121
    Abstract: The present invention provides a protection circuit and related operation control method to enable the PFM circuit when the operating duration of the PFM circuit is not greater than a first threshold, and disables the PFM circuit when a rest duration of the PFM circuit is not greater than a second threshold. The present invention further provides a protection circuit and related operation control method to avoid starting excessive vertical scanning operations within one frame scanning period by masking one of the gate scanning start signal STV, the gate clock signal CKV and the gate discharge signal OEV. The present invention further provides a protection circuit and related operation control method to disable the gate scanning start signal STV when the number of clock cycles is not equal to a target number of clock cycles, which protects the gate driver from overload.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: September 15, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chi-Hung Liao, Chang-Lung Wu, Jen-Chun Peng, Huan-Sen Liao, Kuo-Tung Hsu, Wei-Jen Chang
  • Publication number: 20140247257
    Abstract: A method of data dependent pre-charging for a source driver of a liquid crystal display (LCD) is disclosed. Pre-charging is dynamically performed among plural pre-charging schemes according to pixel data corresponding to required output voltage levels to be outputted from channels of the source driver.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 4, 2014
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chun-Yi Li, Huan-Sen Liao, Way-Guo Tseng, Jen Chun Peng
  • Publication number: 20140210804
    Abstract: In a method of dynamic charge sharing for a display device, it is determined whether a current line of a data driver has polarity inverted from a preceding line. Charge sharing is performed globally, if it is determined that the current line is polarity inverted from the preceding line. It is further determined whether the current line and the preceding line are substantially different, if it is determined that the current line is not polarity inverted from the preceding line. Charge sharing is performed in groups if it is determined that the current line and the preceding line are substantially different; otherwise, no charge sharing is performed.
    Type: Application
    Filed: January 27, 2013
    Publication date: July 31, 2014
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Huan-Sen Liao, Jen Chun Peng
  • Patent number: 7839413
    Abstract: A dithering method for an LCD is disclosed and comprises a plurality of steps. First, a plurality of long-bit gray-level signals are received. Each of the long-bit gray-level signal is transformed to a short-bit gray-level signal and at least one LSB is obtained based on the bit length difference between the long-bit gray-level signal and the short-bit gray-level signal. A sequence of frames is generated by the short-bit gray-level signals, and the frames can be classified into different groups according to the LSB. The offset pattern is applied on the frames, wherein the offset pattern is displayed at the same polarity in the same column of each frame in the same group.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 23, 2010
    Assignee: Himax Technologies Limited
    Inventor: Huan-Sen Liao
  • Publication number: 20090073185
    Abstract: A dithering method for an LCD is disclosed and comprises a plurality of steps. First, a plurality of long-bit gray-level signals are received. Each of the long-bit gray-level signal is transformed to a short-bit gray-level signal and at least one LSB is obtained based on the bit length difference between the long-bit gray-level signal and the short-bit gray-level signal. A sequence of frames is generated by the short-bit gray-level signals, and the frames can be classified into different groups according to the LSB. The offset pattern is applied on the frames, wherein the offset pattern is displayed at the same polarity in the same column of each frame in the same group.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventor: Huan-Sen Liao
  • Publication number: 20040056852
    Abstract: A source driver for driver-on-panel systems. The source driver includes a digital buffer to receive and schedule externally input digital video data, a set of shift registers to generate corresponding sampling control signals according to the data scheduled, a first set of latches to sample the scheduled data according to the sampling control signals and thus generate corresponding digital video data samples, a second set of latches to hold the samples, a set of level shifts to convert the held samples into high-voltage digital signals, a set of digital-to-analog converters to convert the high-voltage digital signals into analog signals, a set of analog buffers to drive the analog signals to a high-loading display panel, and a set of demultiplexers to output the analog signals at different times to appropriate display positions using time division multiplexing (TDM).
    Type: Application
    Filed: January 22, 2003
    Publication date: March 25, 2004
    Inventors: Jun-Ren Shih, Huan-Sen Liao