Patent ID: 6633283
Filing Date: 2003-10-14
Classification: G09G

Abstract:
An image processing device, comprising:a storing part storing image data of an input image signal; and a control part detecting a resolution of the image data from a synchronization signal which is in synchronization with the input image signal, and, controlling timing of reading the image data from said storing part according to the thus-detected resolution, wherein said control part has a data enable signal input thereto as the synchronization signal which is in synchronization with the input image signal, detects the number of data enable signal pulses within one frame of the input image signal in the data enable signal, and determines, as a magnification in a vertical direction, a value obtained as a result of a resolution in the vertical direction of an image to be output being divided by the thus-detected number of data enable signal pulses within one frame; the data enable signal which is in synchronization with the input image signal and a clock signal which is in synchronization with the reading timing for the image data are provided to said control part; a pulse width of the data enable signal is counted by using the clock signal, and, a value obtained as a result of a resolution in a horizontal direction of the image to be output being divided by a thus-obtained count value is determined as a magnification in the horizontal direction, by said control part; and said control part controls the timing of reading the image data from said storing part according to the thus-obtained magnification in the vertical direction and magnification in the horizontal direction.