Digital video guard

摘要

592063 Disclosed is a trusted digital display guard (10) for controlling the display of trustworthy and untrustworthy digital display data on a digital video display device. A digital display data input (42) receives untrustworthy digital data and in-band trustworthy digital data and a trusted digital display data output (44) outputs digital display data to the digital display device. A trusted status indicator indicates a trusted indicator state and a trusted digital processor (54) is operatively connected to the digital display data input (42), trusted digital display output (44) and trusted status indicator. The processor (54) processes in-band digital data to identify trustworthy and untrustworthy digital data and for directing, untrustworthy digital display data or processed trustworthy digital data as trustworthy digital display data and none or some modified untrustworthy digital display data. The trusted digital processor (54) controls the status of the trusted status indicator to the trusted indicator state.