# US 2014/0198021 A1 · Display driving apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0198021 A1 - Document ID: US20140198021A1 - Status: Published application - Kind: A1 - Application number: 13/939,194 - Filed: 2013-07-11 - Published: 2014-07-17 - Earliest claimed: 2013-01-14 - Assignees: Novatek Microelectronics Corp. - Applicants: Novatek Microelectronics Corp. - Inventors: Chao-Kai Tu; Kuang-Feng Sung; Shun-Hsun Yang; Teng-Jui Yu - Web page: https://patentgrep.com/patent/US20140198021A1 ## CPC - G09G 3/3688: {suitable for active matrices only} - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - G09G 2360/18: Use of a frame buffer in a display terminal, inclusive of the display panel - G09G 2370/08: Details of image data interface between the display device controller and the data line driver circuit - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A display driving apparatus, including an image processor, a timing controller, and a plurality of source drivers, is provided. The image processor determines whether an image frame corresponding to a frame data is a static image and outputs the frame data and a determination result. The timing controller receives the frame data from the image processor and outputs the frame data. The source drivers receive the frame data from the timing controller and drive a display panel according to the frame data. Each of the source drivers includes a memory module configured to store the frame data corresponding to the static image. When the source drivers drive the display panel according to the frame data corresponding to the static image, the image processor stops outputting the frame data to the timing controller, and the timing controller stops outputting the frame data to the source drivers. ## Claims ### Claim 1 A display driving apparatus, adapted for driving a display panel, the display driving apparatus comprising: an image processor determining whether an image frame corresponding to a frame data is a static image and outputting the frame data and a determination result; a timing controller coupled to the image processor and receiving the frame data from the image processor and outputting the frame data; and a plurality of source drivers coupled to the timing controller and receiving the frame data from the timing controller and driving the display panel according to the frame data, wherein each of the source drivers comprises a memory module, and the memory modules are configured to store the frame data corresponding to the static image, wherein when the source drivers drive the display panel according to the frame data corresponding to the static image, the image processor stops outputting the frame data to the timing controller, and the timing controller stops outputting the frame data to the source drivers. ### Claim 2 (depends on 1) The display driving apparatus according to claim 1, wherein each of the memory modules comprises: an image processing circuit coupled to the timing controller and performing a first image process on the frame data and outputting the frame data processed by the first image process; and a memory circuit coupled to the image processing circuit and storing the frame data processed by the first image process. ### Claim 3 (depends on 2) The display driving apparatus according to claim 2, wherein, when each of the source drivers drives the display panel according to the frame data, the image processing circuit reads the frame data from the memory circuit and performs a second image process on the frame data. ### Claim 4 (depends on 1) The display driving apparatus according to claim 1, wherein the memory modules further store a frame data corresponding to a dynamic image. ### Claim 5 (depends on 1) The display driving apparatus according to claim 1, wherein each of the source drivers further comprises: a multiplexer circuit coupled to the timing controller and selecting whether to output the frame data corresponding to the dynamic image or output the frame data corresponding to the static image to drive the display panel according to a control signal. ### Claim 6 (depends on 5) The display driving apparatus according to claim 5, wherein the image processor outputs the control signal to control the multiplexer circuit according to the determination result. ### Claim 7 (depends on 5) The display driving apparatus according to claim 5, wherein each of the source drivers further comprises: a multiplexer controller coupled to the timing controller and determining whether the image frame corresponding to the frame data outputted by the timing controller is the static image and outputting the control signal to control the multiplexer circuit according to the determination result. ### Claim 8 (depends on 5) The display driving apparatus according to claim 5, wherein each of the memory modules comprises: an image processing circuit coupled to the timing controller and performing a first image process on the frame data and outputting the frame data processed by the first image process; and a memory circuit coupled to the image processing circuit and storing the frame data processed by the first image process, wherein, when the multiplexer circuit selects to output the frame data corresponding to the static image, the image processing circuit reads the frame data from the memory circuit, performs a second image process on the frame data, and outputs the frame data processed by the second image process. ### Claim 9 (depends on 1) The display driving apparatus according to claim 1, wherein each of the source drivers further comprises: a gamma voltage output circuit coupled to the timing controller and receiving the frame data from the timing controller and outputting a gamma voltage signal corresponding to the frame data to drive the display panel, wherein each of the source drivers controls the gamma voltage output circuit therein according to the frame data to adjust the gamma voltage signal. ### Claim 10 (depends on 1) The display driving apparatus according to claim 1, wherein the display driving apparatus and the display panel are disposed in an image display device which comprises a light source module for providing a backlight source to the display panel, wherein each of the source drivers controls the light source module according to the frame data to adjust a brightness of the backlight source.