COPY PROTECTION METHOD OF DIGITAL CABLE BROADCASTING CHANNEL ACCORDING TO PREDETERMINED DIGITAL CABLE BROADCASTING STANDARD, CableCARD MODULE, AND VIDEO SYSTEM

摘要

A copy protection method of a digital cable broadcasting channel according to a predetermined digital cable broadcasting standard is provided which comprises changing a channel to a first digital cable broadcasting channel and exchanging a copy protection value of the digital cable broadcasting standard between a CableCARD module and a video device corresponding to the channel change operation of the first digital cable broadcasting channel without regard to at least one former channel with respect to the first digital cable broadcasting channel.