Patent ID: 8572403

Claim:
A trusted digital video guard for controlling the display of trustworthy and untrustworthy data on a digital video display device, including: a. a digital video data input for receiving untrustworthy digital data and in-band trustworthy digital data; b. a trusted digital video output for outputting digital video to the digital video display device; c. a trusted status indicator having a trusted indicator state; and d. a trusted digital processor operatively connected to the digital video data input, trusted digital video output and a trusted status indicator, and which processes digital data to identify untrustworthy digital data and to identify in-band trustworthy digital data and for directing, i. untrustworthy digital data to the trusted digital video output; or ii. trustworthy digital data and none or some modified untrustworthy digital data to the trusted digital video output, and controlling the status of the trusted status indicator to the trusted indicator state, wherein the trusted digital processor processes in-band signaling, in-band multiplexing, and tagging of data of received digital data.