Patent ID: 7555044
Filing Date: 2009-06-30
Classification: H04N

Abstract:
1. A method of transform-based encoding of digital video content, said digital video content comprising a stream of pictures, slices, or macroblocks, each of which are at least one of intra, predicted or bi-predicted pictures, slices, or macroblocks, in the form of blocks of pixels forming a two dimensional array of two dimensional array frequency coefficients including high-energy low frequency coefficients and low-energy high frequency coefficients, said method comprising: scanning said two dimensional array frequency coefficients, from each of said blocks, in a manner that is vertically biased and producing a one dimensional array of one dimensional array frequency coefficients, wherein the high-energy low frequency coefficients are scanned before the low-energy high frequency coefficients; and wherein when said two dimensional array of said two dimensional array frequency coefficients comprises 4 columns of frequency coefficients and 4 rows of frequency coefficients, said method further comprises: