Patent ID: 7957586
Filing Date: 2011-06-07
Classification: H04N

Abstract:
1. A method for converting, in a multimedia apparatus, a first image signal expressed in a first color space into a second image signal expressed in a second color space on a subword parallelism basis, the method comprising: determining, by a color converter processor, a first image parameter of a second image signal matrix as a function calculated by multiplying conversion coefficients of a first row constituting an image conversion matrix by image parameters constituting a first image signal matrix; determining, by the color converter processor, a second image parameter of the second image signal matrix as a function expressed by at least one of image parameters constituting the first image signal matrix and the determined first image parameter of the second image signal matrix; determining, by the color converter processor, a third image parameter of the second image signal matrix as a function expressed by at least one image parameter unused for determining the second image parameter of the second image signal matrix among the image parameters constituting the first image signal matrix, and by the determined first image parameter of the second image signal matrix; and calculating, by the color converter processor, the second image signal matrix by shifting the determined image parameters constituting the second image signal matrix by a predetermined number of bits.