Patent ID: 7372904
Filing Date: 2008-05-13
Classification: H04N

Abstract:
1. A video encoding system, comprising: an encoder that receives an input video sequence having a first video quality, and generates first data indicative of a video sequence of lesser quality than said first video quality, and generates second data that includes information to enhance a quality of a video sequence associated with the first data, said encoding operating using a frequency weighting file having factors for said second data which establish priority to parts of the second data to parts that are more visually significant, as compared with parts that are less visually significant, said frequency weighting file establishing said priority by defining shifting factors that specifies a bit shifting to a location within a specific factor that has a higher value, and which represents a more significant bit within a specific factor for said second data to emphasize at least one of said parts, and produces information indicative of said first data and said second data that is bitshifted according to said frequency weighting file, wherein said frequency weighting file comprises a matrix of values, and wherein said frequency weighting file also includes information indicative of an amount of data lost by said video sequence when generating said first data and wherein said frequency weighting file includes more weighting for portions of the video sequence which lost more data in conversion to said first data.