Patents by Inventor Chia-Hsin Tung

Chia-Hsin Tung 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: 10902791
    Abstract: A method of controlling a source driver includes the steps of: detecting a line of image data to be outputted by a plurality of channels of the source driver, to generate a detection result; generating a plurality of control signals according to the detection result, each of the plurality of control signals corresponding to a channel among the plurality of channels; and enabling or disabling an operational amplifier in each of the plurality of channels via one of the plurality of control signals corresponding to the channel.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: January 26, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chia-Hsin Tung, Chun-Hung Chen
  • Publication number: 20200294473
    Abstract: A display driver device including a driver circuit and a control circuit is provided. The driver circuit is configured to drive a display panel to display an animated image for a display period under an always on display mode according to display information of the animated image stored in a storage circuit. The display period includes a writing period and a non-writing period after the writing period. The control circuit is configured to write the display information of the animated image received from an external device into the storage circuit during the writing period of the display period. The control circuit is configured to stop receiving the display information from the external device and writing any display information into the storage circuit during the non-writing period of the display period. A display device including the display driver device and an operating method for the display driver device are also provided.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 17, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventor: Chia-Hsin Tung
  • Publication number: 20200226982
    Abstract: A method of controlling a source driver includes the steps of: detecting a line of image data to be outputted by a plurality of channels of the source driver, to generate a detection result; generating a plurality of control signals according to the detection result, each of the plurality of control signals corresponding to a channel among the plurality of channels; and enabling or disabling an operational amplifier in each of the plurality of channels via one of the plurality of control signals corresponding to the channel.
    Type: Application
    Filed: July 26, 2019
    Publication date: July 16, 2020
    Inventors: Chia-Hsin Tung, Chun-Hung Chen
  • Patent number: 10636341
    Abstract: A method of processing an image data for an image processing device includes a plurality of steps. The steps include receiving the image data; storing the image data in a frame buffer of the image processing device; performing a signal processing procedure on the image data obtained from the frame buffer, to generate a final display data; restoring the final display data in the frame buffer; and entering a power saving mode after the final display data is restored in the frame buffer. In the power saving mode, the image processing device performs the following steps: turning off the signal processing circuit; and outputting the final display data restored in the frame buffer, to display the final display data.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: April 28, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chia-Hsin Tung, Yung-Chien Fan, Wen-Kai Hsieh, Shu-Yuan Hsu
  • Publication number: 20200082745
    Abstract: A method of processing an image data for an image processing device includes a plurality of steps. The steps include receiving the image data; storing the image data in a frame buffer of the image processing device; performing a signal processing procedure on the image data obtained from the frame buffer, to generate a final display data; restoring the final display data in the frame buffer; and entering a power saving mode after the final display data is restored in the frame buffer. In the power saving mode, the image processing device performs the following steps: turning off the signal processing circuit; and outputting the final display data restored in the frame buffer, to display the final display data.
    Type: Application
    Filed: October 8, 2018
    Publication date: March 12, 2020
    Inventors: Chia-Hsin Tung, Yung-Chien Fan, Wen-Kai Hsieh, Shu-Yuan Hsu
  • Patent number: 10355679
    Abstract: A display driving circuit, a calibration module, and an associated calibration method are provided. The display driving circuit includes an internal clock circuit and the calibration module. The internal clock circuit generates an internal clock signal. The calibration module includes a counting circuit and a trimming circuit. The counting circuit counts pulses of a reference clock signal to generate a detected reference-clock count and counts pulses of the internal clock signal to generate a detected internal-clock count. The trimming circuit generates a calibration signal to adjust frequency of the internal clock signal when a predefined condition is satisfied. The predefined condition is related to comparison between a first preset count and one of the detected reference-clock count and the detected internal-clock count.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 16, 2019
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chien-Chuan Huang, Chia-Hsin Tung, Chun-Hung Chen, Hao-Jan Yang, Chieh-Hsiang Chang
  • Publication number: 20190173457
    Abstract: A display driving circuit, a calibration module, and an associated calibration method are provided. The display driving circuit includes an internal clock circuit and the calibration module. The internal clock circuit generates an internal clock signal. The calibration module includes a counting circuit and a trimming circuit. The counting circuit counts pulses of a reference clock signal to generate a detected reference-clock count and counts pulses of the internal clock signal to generate a detected internal-clock count. The trimming circuit generates a calibration signal to adjust frequency of the internal clock signal when a predefined condition is satisfied. The predefined condition is related to comparison between a first preset count and one of the detected reference-clock count and the detected internal-clock count.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 6, 2019
    Inventors: Chien-Chuan Huang, Chia-Hsin Tung, Chun-Hung Chen, Hao-Jan Yang, Chieh-Hsiang Chang
  • Publication number: 20160133231
    Abstract: In the disclosure, a display driver integrated circuit (DDIC) configured to drive a display panel and an electronic apparatus having the DDIC would generate display data to constantly update information displayed on the display panel even when a processor is in a power save mode. The DDIC includes a first input terminal, a memory device, an information rendering unit, an information overlay unit, and a source driver. The first input terminal receives a subscribed signal. The memory device stores a background image. The information rendering unit is coupled to the first input terminal of the DDIC to receive the subscribed signal and renders subscribed information according to the subscribed signal. The information overlay unit receives the subscribed information from the information overlay unit and the background image from the memory device, and accordingly, the display data is generated without obtaining frame data from an external processor.
    Type: Application
    Filed: October 20, 2015
    Publication date: May 12, 2016
    Inventors: Shang-I Liu, Li-Chun Huang, Ching-Chun Lin, Chia-Hsin Tung, Chien-Yu Chen, Hung-Wei Lin
  • Publication number: 20130322515
    Abstract: A data transmission system includes a transmission device having a first control module for generating a first control signal. A first transformation module is coupled to the first control module for transforming an original data into a transmission data according to the original data and the first control signal. A multiplexer is utilized for transmitting the transmission data according to the first control signal. A reception device includes a second control module for generating a second control signal, a reception module coupled to the second control module for receiving the transmission data, and a second transformation module for transforming the transmission data into the original data according to the second control signal, so as to transmit the original data to a display device. Thus, a transmission size of the transmission data is smaller than a transmission size of the original data.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 5, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chia-Hsin Tung, Jia-Jye Shyu
  • Patent number: 8537102
    Abstract: A backlight control apparatus for controlling luminance of a backlight panel includes an image information memory and a detection and automatic switching circuit. The image information memory is for storing the image information. The detection and automatic switching circuit is for detecting the updated frequency of the updated image information and then sets a displaying mode for adjusting the luminance of the backlight panel according to the updated frequency.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: September 17, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chung-Jian Li, Tzung-Yuan Lee, Chia-Hsin Tung
  • Patent number: 8462181
    Abstract: A driving method for a display device provides a first input pixel data corresponding to a pixel, and generates a second input pixel data by multiplying the first input pixel data by a predetermined rate. Next, an output pixel data corresponding to the second input pixel data is obtained from a predetermined gamma curve. When receiving the first input pixel data, the output pixel data is used for driving a display panel, and the second input pixel data is used for driving a backlight module of the display panel.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: June 11, 2013
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chung-Jian Li, Tzung-Yuan Lee, Shang-I Liu, Chia-Hsin Tung, Hao-Jan Huang, Wing-Kai Tang
  • Publication number: 20130088502
    Abstract: A display driving device is disclosed. The display driving device includes an image data transmission interface, a frame buffer, and an over-driving processor. The image data transmission interface transmits image data, which is then received by and stored in the frame buffer. The over-driving processor is coupled to the image data transmission interface to receive current image data provided by the image data transmission interface, and also coupled to the frame buffer to receive previous image data saved in the frame buffer. In a dynamic display mode, the over-driving processor generates a display driving signal according to the previous image data and the current image data.
    Type: Application
    Filed: April 24, 2012
    Publication date: April 11, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Cheng-Chung Shih, Wing-Kai Tang, Jin-Sheng Hsieh, Chia-Hsin Tung
  • Patent number: 8237694
    Abstract: In a first display period of a display device, a first count value is recorded at the rising edge of the data enable signal for controlling the length of a horizontal line. Next, a second count value is recorded at the falling edge of the data enable signal for identifying the time when the data enable signal switches from a high level to a low level. When entering a porch period following the first display period, the counter is cleared when the count value reaches the first count value. In a second display period following the porch period, the counter is cleared at the rising edge of the data enable signal, and the first count value is used for controlling the length of the horizontal line.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: August 7, 2012
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chia-Hsin Tung, Wing-Kai Tang, Wei-Yi Wei
  • Publication number: 20110187760
    Abstract: A backlight control apparatus for controlling luminance of a backlight panel includes an image information memory and a detection and automatic switching circuit. The image information memory is for storing the image information. The detection and automatic switching circuit is for detecting the updated frequency of the updated image information and then sets a displaying mode for adjusting the luminance of the backlight panel according to the updated frequency.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 4, 2011
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chung-Jian Li, Tzung-Yuan Lee, Chia-Hsin Tung
  • Publication number: 20100177067
    Abstract: In a first display period of a display device, a first count value is recorded at the rising edge of the data enable signal for controlling the length of a horizontal line. Next, a second count value is recorded at the falling edge of the data enable signal for identifying the time when the data enable signal switches from a high level to a low level. When entering a porch period following the first display period, the counter is cleared when the count value reaches the first count value. In a second display period following the porch period, the counter is cleared at the rising edge of the data enable signal, and the first count value is used for controlling the length of the horizontal line.
    Type: Application
    Filed: April 6, 2009
    Publication date: July 15, 2010
    Inventors: Chia-Hsin Tung, Wing-Kai Tang, Wei-Yi Wei
  • Publication number: 20100171735
    Abstract: A data driving circuit for a flat display panel with a partial mode and a method for processing pixel data of a partial window. The driving circuit includes an input register and a data collection circuit. When the driving circuit is in the partial mode, it determines whether to sequentially read pixel data for pixels of the pixel data of the window from a data area according to a boundary of the window and a scan count, and temporarily stores the pixel data into the data collection circuit. When the scan count indicates that the window is to be displayed, the data collection circuit selects pixel data for pixels from the temporarily stored pixel data for the pixels and accordingly produces pixel data for pixels to the input register so as to sequentially output the pixel data of the window to drive the display panel to display the window.
    Type: Application
    Filed: August 14, 2009
    Publication date: July 8, 2010
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Chia-Hsin Tung
  • Publication number: 20100164998
    Abstract: A driving method for a display device provides a first input pixel data corresponding to a pixel, and generates a second input pixel data by multiplying the first input pixel data by a predetermined rate. Next, an output pixel data corresponding to the second input pixel data is obtained from a predetermined gamma curve.
    Type: Application
    Filed: February 18, 2009
    Publication date: July 1, 2010
    Inventors: Chung-Jian Li, Tzung-Yuan Lee, Shang-I Liu, Chia-Hsin Tung, Hao-Jan Huang, Wing-Kai Tang
  • Publication number: 20080226015
    Abstract: A pulse extension circuit for extending a pulse signal includes an input unit for receiving the pulse signal, an edge detection unit coupled to the input unit for generating a initiation signal, a pulse initiation unit coupled to the edge detection unit for outputting a control signal and adjusting a voltage level of the control signal, a pulse width control unit coupled to the pulse initiation unit for outputting a termination signal, a reset unit coupled to the edge detection unit, the pulse initiation unit and the pulse width control unit for outputting the first reset signal and the second reset signal to reset the pulse initiation unit and the pulse width control unit, and an output unit coupled to the input unit and the pulse initiation unit for extending a signal period of the pulse signal according to the pulse signal and the control signal.
    Type: Application
    Filed: April 26, 2007
    Publication date: September 18, 2008
    Inventors: Chia-Hsin Tung, Liang-Kuei Hsu
  • Patent number: 7420398
    Abstract: A pulse extension circuit for extending a pulse signal includes an input unit for receiving the pulse signal, an edge detection unit coupled to the input unit for generating a initiation signal, a pulse initiation unit coupled to the edge detection unit for outputting a control signal and adjusting a voltage level of the control signal, a pulse width control unit coupled to the pulse initiation unit for outputting a termination signal, a reset unit coupled to the edge detection unit, the pulse initiation unit and the pulse width control unit for outputting the first reset signal and the second reset signal to reset the pulse initiation unit and the pulse width control unit, and an output unit coupled to the input unit and the pulse initiation unit for extending a signal period of the pulse signal according to the pulse signal and the control signal.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: September 2, 2008
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chia-Hsin Tung, Liang-Kuei Hsu