Systems, devices, and methods for generating a substantially continuous stream of audiovisual data during a switching event
AssigneeCrestron Electronics, Inc.
InventorsAdolfo Velasco, Justin Kennington, Christopher Merck, Gennady Pratusevich
Life of this patent
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Abstract
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.
Claims29
A switcher device comprising:
- at least one output board (310);
- at least two input boards (308), each of the at least two input boards adapted to receive audiovisual data from a respective audiovisual source via a respective audiovisual link (102);
- a multiplexer (306) communicatively coupled between the at least two input boards and the at least one output board (310), and adapted to dynamically switch audiovisual data from the at least two input boards to the at least one output board;
- and
- a switcher device processing unit (318) adapted to notify the at least one output board that it will receive an output from the multiplexer a predetermined amount of time prior to transmitting a switch signal to the multiplexer for a switching event.
A video distribution network comprising:
- at least two audiovisual sources (104);
- at least one output board (310);
- a multiplexer (306) communicatively coupled to both the at least two audiovisual sources and the at least one output board;
- and
- a switcher (302) adapted to
- dynamically route audiovisual data from the at least two audiovisual sources to the at least one output board through the multiplexer, and is further adapted to
- notify the at least one output board that it will receive an output from the multiplexer a predetermined amount of time prior to transmitting a switch signal to the multiplexer for a switching event.
An output board in a switcher device for transmitting audiovisual data to a video sink, the output board comprising:
- an output board processing unit;
- and
- a scaler adapted to generate video timing data at a native resolution of the video sink and a repeated frame of image content data during a switching event, wherein the switcher device comprises
- a switcher device processing unit, and
- a multiplexer, and wherein
- (a) the switcher device processing unit is communicatively coupled with the multiplexer and the output board processing unit, and
- (b) the switcher device processing unit is adapted to notify the output board processing unit that it the output board will receive an output from the multiplexer a predetermined amount of time prior to transmitting a switch signal the multiplexer for the switching event.
Dependencies are inferred from the claim text.