# US 10,373,582 B2 · Display control device and control method therewith > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,582 B2 - Document ID: US10373582B2 - Status: Granted - Kind: B2 - Application number: 15/506,221 - Filed: 2014-10-24 - Published: 2018-08-02 - Granted: 2019-08-06 - Earliest claimed: 2014-10-24 - Assignees: NEC Display Solutions, Ltd. - Applicants: NEC Display Solutions, Ltd. - Inventors: Tatsuo Kimura - Web page: https://patentgrep.com/patent/US10373582B2 ## CPC - G09G 5/005: {Adapting incoming signals to the display format of the display terminal} - G09G 5/00: Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) - G09G 5/18: Timing circuits for raster scan displays (specially adapted for television H04N {; synchronisation between the display unit and other display units, videodisc player G09G5/12}) - G09G 5/393: Arrangements for updating the contents of the bit-mapped memory - G09G 5/395: Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen (G09G5/399 takes precedence) - H04N 7/0105: {using a storage device with different write and read speed} - H04N 13/341: using temporal multiplexing - H04N 13/398: Synchronisation thereof; Control thereof - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G09G 2340/04: Changes in size, position or resolution of an image - G09G 2340/0435: Change or adaptation of the frame rate of the video stream - G09G 2360/12: Frame memory handling - H04N 13/139: Format conversion, e.g. of frame-rate or size - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Display control device 100 in the present invention includes: memory 101 that stores an image signal input from a signal source; controller 102 that determines the number of output frames based on an input vertical synchronizing signal input from the signal source, the output frames being frames to be displayed on a display in one cycle of the input vertical synchronizing signal, and that determines a dot number in an output horizontal period such that a gap between an output frame line number of a predetermined output frame and the output frame line number of a different output frame in a period corresponding to one cycle of the input vertical synchronizing signal is smaller than a predetermined threshold, the output horizontal period being one cycle of an output horizontal synchronizing signal, the output frame line number being the number of output horizontal periods corresponding to the output frame; and output section 103 that reads the image signal from storage 101 depending on the dot number determined by controller 102, and that outputs the read image signal on the display. ## Claims ### Claim 1 A display control device, comprising: a storage that stores an image signal input from a signal source; a controller that determines a number of output frames based on an input vertical synchronizing signal input from the signal source, the output frames including frames to be displayed on a display in one cycle of the input vertical synchronizing signal, and that determines a dot number in an output horizontal period such that a gap between an output frame line number of a predetermined output frame and the output frame line number of a different output frame in a period corresponding to one cycle of the input vertical synchronizing signal is smaller than a predetermined threshold, the output horizontal period being one cycle of an output horizontal synchronizing signal, the output frame line number being a number of output horizontal periods corresponding to the output frame; and an output section that reads the image signal from said storage depending on the dot number determined by said controller, and that outputs the read image signal on the display. ### Claim 2 (depends on 1) The display control device according to claim 1, wherein said controller calculates an output vertical total line number that is a total number of lines to be read in the one cycle of the input vertical synchronizing signal, based on a dot clock, a frequency of the input vertical synchronizing signal, and a previously determined reference horizontal output total dot number, determines output frame line numbers of the output frames based on the calculated output vertical total line number, and calculates the output vertical total line number again by adding or subtracting a predetermined number for the reference horizontal output total dot number, when the gap between the determined output frame line number of the predetermined output frame and the determined output frame line number of the different output frame is larger than the predetermined threshold. ### Claim 3 (depends on 2) The display control device according to claim 2, wherein said controller gradually increases a value that is added or subtracted for the reference horizontal output total dot number, until the gap between the output frame line number of the predetermined output frame and the output frame line number of the different output frame becomes smaller than the predetermined threshold, and stops the calculation of the output vertical total line number, when a value that is subtracted for the reference horizontal output total dot number becomes larger than a predetermined value. ### Claim 4 A control method with a display control device, the method comprising: storing an image signal input from a signal source; determining a number of output frames based on an input vertical synchronizing signal input from the signal source, the output frames including frames to be displayed on a display in one cycle of the input vertical synchronizing signal, and determining a dot number in an output horizontal period such that a gap between an output frame line number of a predetermined output frame and the output frame line number of a different output frame in a period corresponding to one cycle of the input vertical synchronizing signal is smaller than a predetermined threshold, the output horizontal period being one cycle of an output horizontal synchronizing signal, the output frame line number being a number of output horizontal periods corresponding to the output frame; and reading the stored image signal depending on the determined dot number, and outputting the read image signal on the display. ### Claim 5 (depends on 4) The control method according to claim 4, wherein said display control device calculates an output vertical total line number that is a total number of lines to be read in the one cycle of the input vertical synchronizing signal, based on a dot clock, a frequency of the input vertical synchronizing signal and a previously determined reference horizontal output total dot number, determines the output frame line number of each of the output frames based on the calculated output vertical total line number, and calculates the output vertical total line number again by adding or subtracting a predetermined number for the reference horizontal output total dot number, when the gap between the determined output frame line number of the predetermined output frame and the output frame line number of the different output frame is larger than the predetermined threshold. ### Claim 6 (depends on 5) The control method according to claim 5, wherein said display control device gradually increases a value that is added or subtracted for the reference horizontal output total dot number, until the gap between the output frame line number of the predetermined output frame and the output frame line number of the different output frame becomes smaller than the predetermined threshold, and stops the calculation of the output vertical total line number, when a value that is subtracted for the reference horizontal output total dot number becomes larger than a predetermined value. ### Claim 7 A display control device, comprising: a processor coupled to a memory storing instructions for executing: a storage that stores an image signal input from a signal source; a controller that determines a number of output frames based on an input vertical synchronizing signal input from the signal source, the output frames including frames to be displayed on a display in one cycle of the input vertical synchronizing signal, and that determines a dot number in an output horizontal period such that a gap between an output frame line number of a predetermined output frame and the output frame line number of a different output frame in a period corresponding to one cycle of the input vertical synchronizing signal is smaller than a predetermined threshold, the output horizontal period being one cycle of an output horizontal synchronizing signal, the output frame line number being a number of output horizontal periods corresponding to the output frame; and an output section that reads the image signal from said storage depending on the dot number determined by said controller, and that outputs the read image signal on the display.