Patent ID: 8458343

Claim:
A method comprising: encrypting an uncompressed data stream for transmission; transmitting the encrypted data stream over a data link from a first device to a second device, the data stream operating in a first mode, the first mode including transmission of a first type of video data; determining that the data stream is to be changed from the first mode to a second mode, the second mode including transmission of a second type of video data, wherein data in the first mode is incompatible with data in the second mode; and while the data stream is being transmitted in the first mode via the data link, transmitting a message from the first device to the second device over a single-wire control link between the first device and the second device, the message indicating that the first device will change the data stream from the first mode to the second mode, the message being sent via the single-wire control link prior to the change to the second mode.