A digital video image compression and display method, a personal computer system therefor and a digital storage device for storing the compressed digital signal

摘要

The present invention relates to the electronic storage and retrieval of digital video image sequences such as those occurring in digital motion and frame animation computer applications. The method of the present invention is provided with sequences consisting of a plurality of video images each displayed in a predetermined pixel array arranged in successive lines; A first digital signal representing the first video image in the sequence to be displayed is derived and displayed with a bit-mask data area defining a pixel array and displaying pixel values for the pixels in the bit-mask array. A prescribed pixel data area; Represent a second video image in the sequence that is the successor of the first signal and is displayed and the second digital signal is derived similar to the first digital signal; The first and second digital signals are compared to identify pixels that have not changed in succession from the first video image to the second video image; The second digital signal derives a bit-mask data portion to indicate which pixels have changed in the sequence from the first video image to the second video image and only those pixels represented as changed in the bit-mask area. The second digital signal is compressed by deriving a pixel data region for presentation; It is a differential frame compression method in which the series of digital signals is stored.