Signal processing unit for producing a selected one of signals predictive of original signals
Method for motion-compensated frame-to-frame prediction coding
Video-signal DPCM coder with adaptive prediction
Circuit implementation of block matching algorithm
Adaptive motion compensation for digital television
Apparatus and method for adaptively compressing successive blocks of digital video
Motion picture data coding/decoding system having motion vector coding unit and decoding unit
Video signal transmitting system
Method and apparatus for compressing and decompressing a digital video signal using predicted and error images
Method and apparatus for communicating compressed digital video signals using multiple processors Patent #: 5138447
ApplicationNo. 784474 filed on 10/24/1991
US Classes:375/240.16, Motion vector348/700Motion dependent key signal generation or scene change detection
ExaminersPrimary: Peng, John K.
Assistant: Burgess, Glenton B.
Attorney, Agent or Firm
Foreign Patent References
International ClassesH04N 007/12
AbstractDigital video signals are adaptively compressed for communication to a receiver. A plurality of block-matching motion compensators, each using a different block size, compare current video image data to prior video image data. Video image data output from the motion compensators is compressed, and the compressed data from each motion compensator is compared to find which motion compensator results in the least amount of compressed data for a region of a current video image corresponding to the smallest of the block sizes. The compressed data having the lowest bit count is transmitted to a receiver for recovery of a motion vector. The recovered motion vector is used to recover current video image data from the transmitted data and previously received video image data.