Patent ID: 7555124

Claim:
A secure graphics video system, comprising: video graphics hardware configured to receive encrypted digital audio-video data, the digital audio-video data comprising content designated as secure video content and content that is not designated as secure video content, the video graphics hardware operable to process the digital audio-video data to provide a video signal for a display device; a detection module integrated with the video graphics hardware, the detection module operable to distinguish the secure video content from the content that is not designated as secure video content; a trust authentication module integrated with the video graphics hardware, the trust authentication module adapted to authenticate a source of the secure video content, wherein the video graphics hardware is configured to not render the secure video content as a video signal for the display device, unless the secure video content is authenticated by the trust authentication module, and to render content that is not designated as secure video content as a video signal without authentication of its source; and a watermark detector operatively associated with the video graphics hardware, the watermark detector adapted to detect a watermark embedded in the video signal, the watermark indicating that the content is secure video content; wherein the video graphics hardware is configured to stop rendering the content in response to detection of the watermark, unless the content is secure video content that has been authenticated by the trust authentication module.