METHOD AND APPARATUS FOR RECOVERING THE SCRAMBLING SCREEN OF A CABLE TELEVISION BROADCASTING SYSTEM

摘要

The present invention relates to a method of releasing a picture of a CATV terminal in a cable TV broadcasting, and in particular, a first process of setting a type of picture for each channel; A second step of storing, in the storage means of the subscriber station, the secret release information for each channel according to the secretion format set in the first step; A third step of transmitting a video signal to be transmitted from a cable TV station to each channel according to the secretion format set in the first step; And a fourth process of releasing a video signal received by selecting a channel at the subscriber station according to the releasing information for each channel stored in a second process. By providing a restoration method and a system therefor, it is possible to restore the screen of the secretion state without the need for data communication for a large amount of release information associated with the secretion at the headend.