# US 2014/0192040 A1 · Image processing method and image processing apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192040 A1 - Document ID: US20140192040A1 - Status: Published application - Kind: A1 - Application number: 14/147,735 - Filed: 2014-01-06 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Assignees: MStar Semiconductor, Inc. - Applicants: MStar Semiconductor, Inc. - Inventors: Kuo-Hsiang Hung; Pei-Hung Chiu - Web page: https://patentgrep.com/patent/US20140192040A1 ## CPC - G09G 5/006: {Details of the interface to the display terminal (specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04)} - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - G09G 2320/0209: Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display - 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 An image processing method is disclosed according to one embodiment of the present invention. The method comprises receiving an image according to a first timing signal having at least one first active pixel time period, at least one first horizontal blanking time period and a first vertical blanking time period; and outputting the image according to a second timing signal having at least one second active pixel time period, at least one second horizontal blanking time period and a second vertical blanking time period. A pixel number corresponding to the first active pixel time period equals to a pixel number corresponding to the second active pixel time period. The second horizontal blanking time period is less than the first horizontal blanking time period. The second vertical blanking time period is larger than the first vertical blanking time period. ## Claims ### Claim 1 An image processing method, comprising: receiving an image according to a first timing signal having at least one first active pixel time period, at least one first horizontal blanking time period and a first vertical blanking time period; and outputting the image according to a second timing signal having at least one second active pixel time period, at least one second horizontal blanking time period and a second vertical blanking time period, wherein a pixel number corresponding to the first active pixel time period equals to a pixel number corresponding to the second active pixel time period, the second horizontal blanking time period is less than the first horizontal blanking time period, and the second vertical blanking time period is larger than the first vertical blanking time period. ### Claim 2 (depends on 1) The image processing method of claim 1, wherein a difference between a pixel number corresponding to one cycle of the first timing signal and a pixel number corresponding to one cycle of the second timing signal is less than a predetermined value. ### Claim 3 (depends on 2) The image processing method of claim 2, wherein the pixel number corresponding to the one cycle of the first timing signal equals to the pixel number corresponding to the one cycle of the second timing signal. ### Claim 4 (depends on 2) The image processing method of claim 2, wherein a row number corresponding to the second vertical blanking time period is determined according to the following formula: Hd/Vt=M+Q where Hd is a difference between a total pixel number corresponding to all the at least one first active pixel time period, all the at least one first horizontal blanking time period, and the first vertical blanking time period in one cycle of the first timing signal and a total pixel number corresponding to all the at least one second active pixel time period and all the at least one second horizontal blanking time period in one cycle of the second timing signal, where Vt is a pixel number of one of rows corresponding to the second vertical blanking time period, where M is a quotient of the division Hd/Vt and Q is a remainder of the division Hd/Vt; wherein if M is equal to or larger than 1, M is the row number corresponding to the second vertical blanking time period, and if Q is not equal to zero, a remainder pixel number is accumulated by Q and stored. ### Claim 5 (depends on 4) The image processing method of claim 4, further comprising: accumulating the remainder pixel number by Q each time when receiving the image according to the first timing signal and outputting the image according to the second timing signal are performed; and setting M to be the row number when the remainder pixel number is not larger than the value of Vt, otherwise, setting M+N to be the row number when the remainder pixel number is larger than the value of Vt, and subtracting the multiplication of Vt and N from the remainder pixel number, where N is an positive integer. ### Claim 6 (depends on 4) The image processing method of claim 4, wherein the value of Vt equals to a sum of a pixel number corresponding to one of the at least one second active pixel time period and a pixel number corresponding to one of the at least one second horizontal blanking time period. ### Claim 7 An image processing apparatus, comprising: a storage; and a controller, configured to control the storage for receiving an image according to a first timing signal having at least one first active pixel time period, at least one first horizontal blanking time period and a first vertical blanking time period, and to control the storage for outputting the image according to a second timing signal having at least one second active pixel time period, at least one second horizontal blanking time period and a second vertical blanking time period, wherein a pixel number corresponding to the first active pixel time period equals to a pixel number corresponding to the second active pixel time period, the second horizontal blanking time period is less than the first horizontal blanking time period, and the second vertical blanking time period is larger than the first vertical blanking time period. ### Claim 8 (depends on 7) The image processing apparatus of claim 7, wherein a difference between a pixel number corresponding to one cycle of the first timing signal and a pixel number corresponding to one cycle of the second timing signal is less than a predetermined value. ### Claim 9 (depends on 8) The image processing apparatus of claim 8, wherein the pixel number corresponding to the one cycle of the first timing signal equals to the pixel number corresponding to the one cycle of the second timing signal. ### Claim 10 (depends on 8) The image processing apparatus of claim 8, wherein the controller determines a row number corresponding to the second vertical blanking time period according to the following formula: Hd/Vt=M+Q where Hd is a difference between a total pixel number corresponding to all the at least one first active pixel time period, all the at least one first horizontal blanking time period, and the first vertical blanking time period in one cycle of the first timing signal and a total pixel number corresponding to all the at least one second active pixel time period and all the at least one second horizontal blanking time period in one cycle of the second timing signal, where Vt is a pixel number of one of rows corresponding to the second vertical blanking time period, where M is a quotient of the division Hd/Vt and Q is a remainder of the division Hd/Vt; wherein if M is equal to or larger than 1, M is the row number corresponding to the second vertical blanking time period, and if Q is not equal to zero, a remainder pixel number is accumulated by Q and stored. ### Claim 11 (depends on 10) The image processing apparatus of claim 10, wherein the controller is further configured to accumulate the remainder pixel number by Q each time when receiving the image according to the first timing signal and outputting the image according to the second timing signal are performed; and set M to be the row number when the remainder pixel number is not larger than the value of Vt, otherwise, setting M+N to be the row number when the remainder pixel number is larger than the value of Vt, and subtracting the multiplication of Vt and N from the remainder pixel number, where N is an positive integer. ### Claim 12 (depends on 10) The image processing apparatus of claim 10, wherein the value of Vt equals to a sum of a pixel number corresponding to one of the at least one second active pixel time period and a pixel number corresponding to one of the at least one second horizontal blanking time period.