Use of active shutter device to securely display content

摘要

An active shutter device for use in securely displaying content from a display to a user. The secure content is encoded as a sequence of video frames interspersed within a set of video frames, at least some of the other frames within the set including obfuscating data. The device comprises a receiver for receiving a synchronization signal, at least one shutter mechanism, and a processor. The processor, in response to the synchronization signal, controls the shutter mechanism so as to synchronize the shutter mechanism with, for example, the refresh rate or the video frame display rate of the display. The processor is configured to receive a frame sequence corresponding to the sequence of video frames used of the secure content, and control the shutter mechanism, in response to the received frame sequence, to allow only the video frames in the secure sequence to pass through the shutter.

主权项

1. A system comprising:
an active shutter eye-wear device for use in securely displaying secure content from a display to a user, the secure content being encoded as a sequence of video frames interspersed within a set of video frames, the active shutter eye-wear device comprising:
a receiver for receiving a synchronisation signal;at least one shutter mechanism;an output means; anda processor configured to:
control the shutter mechanism in response to the synchronisation signal so as to synchronize the shutter mechanism with the display;receive a frame sequence corresponding to the sequence of video frames; andfurther control the shutter mechanism, in response to the received frame sequence, to allow only the video frames in the sequence to pass through the shutter mechanism; and a device to detect proximity of the active shutter eye-wear device to the display and send a communication indicating the proximity of the active shutter eye-wear device to a controller coupled to the display, the display being controlled by the controller to display the frame sequence when the user is nearby as a result of the communication, the output means alerting the user to the secure content being displayed on the display.