Patent ID: RE44245

Claim:
A method for a computing system to provide protection of incoming data, the method comprising the steps of: receiving, by a video decoder of the computing system, data of at least one of analog audio data and analog video data, wherein a line of the data includes screen end information, a data access parameter, color burst information, and at least one of audio and video data and wherein the data access parameter is independent of a source of the data; digitizing, by the video decoder independent of the data access parameter, the at least one of audio and video data to produce digital video, wherein, once the at least one of audio and video data is digitized, the data access parameter is lost; prior to enabling a central processing unit to access the digital video, determining by a graphics controller whether the data access parameter restricts accessing of the digital video; and when the data access parameter restricts accessing of the digital video, preventing the central processing unit from accessing the digital video without restriction.