Patents by Inventor Kai-I Dai

Kai-I Dai 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: 9697780
    Abstract: A liquid crystal display (LCD) device includes: a data source, for generating a N-bit pixel data, N being a positive integer; a digital gamma correction unit, coupled to the data source, for performing digital gamma correction on the pixel data to generate a (N+M)-bit digital gamma correction pixel data, M being a positive integer; an image dithering unit, coupled to the digital gamma correction unit, for performing image dithering on the digital gamma correction pixel data to generate a (N+M?K)-bit dithering compensation pixel data, K being a positive integer; and a converter, coupled to the image dithering unit, for converting the dithering compensation pixel data into an output image. A bit number of the converter is lower than a bit number of the digital gamma correction unit.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: July 4, 2017
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Yu-Pin Chang, Kai-I Dai, Jie-Jung Huang
  • Patent number: 9489166
    Abstract: A data transmission method applied in a display, which includes a display panel, is provided. The data transmission method includes the following steps of: providing a host controller and n display drivers, n is a natural number greater than 1; providing a communication link under mobile industry processor interface (MIPI), connecting the host controller to the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the respective n display drivers; employing the host controller for providing a command with a virtual channel parameter through the communication link under MIPI; when the virtual channel parameter corresponds to an ith virtual channel values Vci, an ith display driver executing corresponding operations in response to the command, while the rest n?1 display drivers ignoring the command, wherein i is a natural number smaller than or equal to n.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: November 8, 2016
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Po-Chuan Chang-Chian, Chun-Yi Chou, Wing-Kai Tang, Ching-Chun Lin, Kai-I Dai, Shu-Wei Chang, Chih-Wei Tang
  • Patent number: 9349332
    Abstract: The present disclosure provides a non-overlap data transmission method for a liquid crystal display (LCD). The non-overlap data transmission method includes obtaining an entire fame image data; dividing the entire frame image data into a plurality of image data segments and individually sending the image data segments to a plurality of display processing units at the same time, wherein each of the image data segments is sent to one of the display processing units and image data of each image data segment does not overlap with image data of the other image data segments; and mutually sending image data of the image data segments through the display processing units.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 24, 2016
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Yung Hsu, Kai-I Dai, Jie-Jung Huang
  • Patent number: 9318061
    Abstract: A method for mapping an input grayscale into an output luminance includes selecting a first reference grayscale, a first reference luminance, a second reference grayscale and a second reference luminance according to an input grayscale, generating a middle reference grayscale and a middle luminance, replacing a value of the first or second reference grayscale by a value of the middle reference grayscale, and replacing a value of the first or second reference luminance by a value of the middle luminance according to the middle reference grayscale and the input grayscale, and generating an output luminance by computing a linear transformation equation.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: April 19, 2016
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Yu-Pin Chang, Kai-I Dai, Jie-Jung Huang, Yu-Hsing Chuang, Shih-Hung Huang
  • Publication number: 20160019849
    Abstract: A method for mapping an input grayscale into an output luminance includes selecting a first reference grayscale, a first reference luminance, a second reference grayscale and a second reference luminance according to an input grayscale, generating a middle reference grayscale and a middle luminance, replacing a value of the first or second reference grayscale by a value of the middle reference grayscale, and replacing a value of the first or second reference luminance by a value of the middle luminance according to the middle reference grayscale and the input grayscale, and generating an output luminance by computing a linear transformation equation.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 21, 2016
    Inventors: Yu-Pin Chang, Kai-I Dai, Jie-Jung Huang, Yu-Hsing Chuang, Shih-Hung Huang
  • Publication number: 20150102987
    Abstract: The present disclosure provides a non-overlap data transmission method for a liquid crystal display (LCD). The non-overlap data transmission method includes obtaining an entire fame image data; dividing the entire frame image data into a plurality of image data segments and individually sending the image data segments to a plurality of display processing units at the same time, wherein each of the image data segments is sent to one of the display processing units and image data of each image data segment does not overlap with image data of the other image data segments; and mutually sending image data of the image data segments through the display processing units.
    Type: Application
    Filed: April 1, 2014
    Publication date: April 16, 2015
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Chih-Yung Hsu, Kai-I Dai, Jie-Jung Huang
  • Publication number: 20150062190
    Abstract: A liquid crystal display (LCD) device includes: a data source, for generating a N-bit pixel data, N being a positive integer; a digital gamma correction unit, coupled to the data source, for performing digital gamma correction on the pixel data to generate a (N+M)-bit digital gamma correction pixel data, M being a positive integer; an image dithering unit, coupled to the digital gamma correction unit, for performing image dithering on the digital gamma correction pixel data to generate a (N+M?K)-bit dithering compensation pixel data, K being a positive integer; and a converter, coupled to the image dithering unit, for converting the dithering compensation pixel data into an output image. A bit number of the converter is lower than a bit number of the digital gamma correction unit.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 5, 2015
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Yu-Pin CHANG, Kai-I DAI, Jie-Jung HUANG
  • Publication number: 20150009095
    Abstract: An image display system includes a data output source, and receiving devices coupled to the data output source. The receiving devices decode a first packet header from the data output source to determine whether a first payload data associated with the first packet header is required by the receiving devices. Among the receiving devices, a first receiving device that requires the first payload data receives and displays the first payload data. Also among the receiving devices, a second receiving device that does not require the first payload data temporarily disables its data receiving function, and, before the data output source sends out a second packet header that the second receiving device requires, the second receiving device resumes its data receiving function and displays a second payload data.
    Type: Application
    Filed: April 18, 2014
    Publication date: January 8, 2015
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Kai-I DAI, Jie-Jung HUANG
  • Publication number: 20140375695
    Abstract: A display driving apparatus including a plurality of driving circuits and a controller is provided. The driving circuits include a main driving circuit and a plurality of slave driving circuits. The driving circuits respectively receive a plurality of partial data of a display data from the controller. The slave driving circuits and the main driving circuit respectively generate a plurality of slave luminance distribution data and a main luminance distribution data. The slave driving circuits transport the generated slave luminance distribution data to the main driving circuit, and the main driving circuit generates a luminance control signal according to the slave luminance distribution data and the main luminance distribution data.
    Type: Application
    Filed: September 2, 2013
    Publication date: December 25, 2014
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yu-Pin Chang, Kai-I Dai
  • Publication number: 20130127795
    Abstract: A display apparatus and a control method thereof are provided. The display apparatus includes a display panel, a detection circuit, and a control circuit. The display panel is configured to display images. The detection circuit is configured to detect a noise influencing a display apparatus, and generate a detection signal in response to the noise when the noise is detected. The control circuit is coupled to the detection circuit and the display panel, and configured to maintain an image displayed by the display panel according to the detection signal until the noise disappears. In this way, when the display apparatus is influenced by a noise, the display panel can keep displaying an image displayed before the influence.
    Type: Application
    Filed: February 6, 2012
    Publication date: May 23, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Yung Hsu, Kai-I Dai, Ying-Neng Huang, Wan-Ju Chang
  • Publication number: 20130044089
    Abstract: A data transmission method applied in a display, which includes a display panel, is provided. The data transmission method includes the following steps of: providing a host controller and n display drivers, n is a natural number greater than 1; providing a communication link under mobile industry processor interface (MIPI), connecting the host controller to the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the respective n display drivers; employing the host controller for providing a command with a virtual channel parameter through the communication link under MIPI; when the virtual channel parameter corresponds to an ith virtual channel values Vci, an ith display driver executing corresponding operations in response to the command, while the rest n?1 display drivers ignoring the command, wherein i is a natural number smaller than or equal to n.
    Type: Application
    Filed: June 8, 2012
    Publication date: February 21, 2013
    Applicant: Novatek Microelectronics Corp.
    Inventors: Po-Chuan CHANG-CHIAN, Chun-Yi Chou, Wing-Kai Tang, Ching-Chun Lin, Kai-I Dai, Shu-Wei Chang, Chih-Wei Tang
  • Publication number: 20110141094
    Abstract: A voltage generating system applied to a display driving apparatus is disclosed, which is capable of changing a time point at which a signal of a pixel electrode and a signal of a common electrode perform polarity inversion according to a first sequence, so as to adjust the frequency of an AC common voltage dynamically. Therefore, the noise frequency caused by the transition of the AC common voltage is dispersed, and the energy of audio-frequency noises and high-frequency noises is reduced.
    Type: Application
    Filed: February 21, 2011
    Publication date: June 16, 2011
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Po-Tsun Chen, Kai-I Dai
  • Publication number: 20090135171
    Abstract: A voltage generating system applied to a display driving apparatus is disclosed, which is capable of changing a time point at which a signal of a pixel electrode and a signal of a common electrode perform polarity inversion, so as to adjust the frequency of an AC common voltage dynamically. Therefore, the noise frequency caused by the transition of the AC common voltage is dispersed, and the energy of audio-frequency noises and high-frequency noises is reduced.
    Type: Application
    Filed: January 3, 2008
    Publication date: May 28, 2009
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Po-Tsun Chen, Kai-I Dai
  • Patent number: RE48340
    Abstract: The present disclosure provides a non-overlap data transmission method for a liquid crystal display (LCD). The non-overlap data transmission method includes obtaining an entire fame image data; dividing the entire frame image data into a plurality of image data segments and individually sending the image data segments to a plurality of display processing units at the same time, wherein each of the image data segments is sent to one of the display processing units and image data of each image data segment does not overlap with image data of the other image data segments; and mutually sending image data of the image data segments through the display processing units.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: December 1, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Yung Hsu, Kai-I Dai, Jie-Jung Huang