Patent ID: 7034885

Claim:
An image processing circuit for transforming the number of scanning lines corresponding to an input signal and the number of pixels in a direction along a scanning line into substantially twice, characterized by comprising: pixel value extracting unit for extracting pixel values of a total of nine pixels, three pixels in the horizontal direction along a scanning line by three pixels in the vertical direction in which the line and adjacent lines are abreast, from the pixel values of a plurality of pixels making up three adjacent scanning lines, in which the pixel values of pixels contained in said scanning line are input in a predetermined order corresponding to the scan direction of said scanning line; pixel value calculating unit for calculating the pixel values of four additional pixels generated additionally corresponding to positions on the straight lines connecting a central pixel arranged in the center of said nine pixels and four peripheral pixels of said nine pixels, said four additional pixels being arranged in the oblique directions of the central pixel and at one-quarter the distance from said central pixel to said four peripheral pixels, on the basis of the pixel values of said nine pixels extracted by said pixel value extracting unit; and pixel value output unit for arranging a plurality of generated pixels having the pixel values calculated by said pixel value calculating unit in two columns along a horizontal direction by correlating them with one scanning line corresponding to the input signal, and outputting the pixel values of said generated pixels corresponding to each column in units of column.