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: 9697780Abstract: 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: GrantFiled: May 13, 2014Date of Patent: July 4, 2017Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Yu-Pin Chang, Kai-I Dai, Jie-Jung Huang
-
Patent number: 9489166Abstract: 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: GrantFiled: June 8, 2012Date of Patent: November 8, 2016Assignee: 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: 9349332Abstract: 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: GrantFiled: April 1, 2014Date of Patent: May 24, 2016Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Yung Hsu, Kai-I Dai, Jie-Jung Huang
-
Patent number: 9318061Abstract: 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: GrantFiled: July 15, 2014Date of Patent: April 19, 2016Assignee: NOVATEK Microelectronics Corp.Inventors: Yu-Pin Chang, Kai-I Dai, Jie-Jung Huang, Yu-Hsing Chuang, Shih-Hung Huang
-
Publication number: 20160019849Abstract: 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: ApplicationFiled: July 15, 2014Publication date: January 21, 2016Inventors: Yu-Pin Chang, Kai-I Dai, Jie-Jung Huang, Yu-Hsing Chuang, Shih-Hung Huang
-
Publication number: 20150102987Abstract: 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: ApplicationFiled: April 1, 2014Publication date: April 16, 2015Applicant: NOVATEK Microelectronics Corp.Inventors: Chih-Yung Hsu, Kai-I Dai, Jie-Jung Huang
-
Publication number: 20150062190Abstract: 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: ApplicationFiled: May 13, 2014Publication date: March 5, 2015Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Yu-Pin CHANG, Kai-I DAI, Jie-Jung HUANG
-
Publication number: 20150009095Abstract: 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: ApplicationFiled: April 18, 2014Publication date: January 8, 2015Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Kai-I DAI, Jie-Jung HUANG
-
Publication number: 20140375695Abstract: 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: ApplicationFiled: September 2, 2013Publication date: December 25, 2014Applicant: Novatek Microelectronics Corp.Inventors: Yu-Pin Chang, Kai-I Dai
-
Publication number: 20130127795Abstract: 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: ApplicationFiled: February 6, 2012Publication date: May 23, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Yung Hsu, Kai-I Dai, Ying-Neng Huang, Wan-Ju Chang
-
Publication number: 20130044089Abstract: 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: ApplicationFiled: June 8, 2012Publication date: February 21, 2013Applicant: 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: 20110141094Abstract: 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: ApplicationFiled: February 21, 2011Publication date: June 16, 2011Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Po-Tsun Chen, Kai-I Dai
-
Publication number: 20090135171Abstract: 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: ApplicationFiled: January 3, 2008Publication date: May 28, 2009Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Po-Tsun Chen, Kai-I Dai
-
Patent number: RE48340Abstract: 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: GrantFiled: May 23, 2018Date of Patent: December 1, 2020Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Yung Hsu, Kai-I Dai, Jie-Jung Huang