Method and apparatus for encoding color video signals
Sampling video compression system
Method for compressing then expanding a television signal
Digital encoding of color video signals
Method and apparatus for recording and reproducing video
Television picture compressor
Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback
Video signal interpolation using motion estimation
ApplicationNo. 811486 filed on 12/20/1991
US Classes:375/240.04, Feed forward348/27Quantizer
ExaminersPrimary: Chin, Tommy P.
Assistant: Lee, Richard
Attorney, Agent or Firm
Foreign Patent References
International ClassH04N 007/30
AbstractA technique is provided for a color imaging system having a luminance component and two color difference (chrominance) components, which allots more space in the compressed data stream to the signal component of greater information content or complexity; that is, which combines the encoding of the components of the data representing a common portion of an image in response to the actual needs of the component, prior to encoding the combined data. To this end, the calculation of the quantizing factors considers the combined information content of both the luminance and chrominance components for the same image location. Thus, low chrominance complexity allows the transmission of more of the luminance information, and vice versa. The system also provides for predetermining the relative complexity of the signal components to thus pre-allot the amount of space for each signal component in the compressed data stream in proportion to its measured complexity.