Devices, systems and methods for reducing switching time in a video distribution network

摘要

When switching sources, resolutions or refresh rates in a video distribution network, switching times are reduced by maintaining video lock and security authentication between a video switcher and a video sink. The scaler maintains video lock and security authentication by continuing to generate video timing data during switching events. The scaler also facilitates an aesthetically pleasing transition by generating image content data prior to and after the switching event.

主权项

1. A switcher device comprising:
(a) at least two input boards, each of the at least two input boards configured for receiving audiovisual data from a video source over a security protocol link; and (b) a multiplexer communicatively coupled between the at least two input boards and an output board and configured for dynamically routing audiovisual data from the at least two input boards to the output board, and wherein the output board is configured for
(i) transmitting audiovisual data to a downstream video sink over a security protocol link, and(ii) maintaining the security protocol link in an authenticated interface with the downstream video sink during a switching event between the at least two input boards by outputting a continuous stream of uninterrupted video timing data during the switching event and whereinthe output board further comprises a scaler configured for generating the continuous stream of video timing data during the switching event,the continuous stream of video timing data being generated in the absence of video timing data received from the at least two input boards.