US 12,294,749 B2
Fast switching using variable refresh rate in a repeater environment
Adolfo Velasco, Dumont, NJ (US); and Agesino Primatic, Pittstown, NJ (US)
Assigned to Crestron Electronics, Inc., Rockleigh, NJ (US)
Filed by Crestron Electronics, Inc., Rockleigh, NJ (US)
Filed on Jun. 21, 2023, as Appl. No. 18/212,251.
Prior Publication US 2024/0430500 A1, Dec. 26, 2024
Int. Cl. H04N 21/438 (2011.01); H04N 21/2343 (2011.01); H04N 21/238 (2011.01); H04N 21/258 (2011.01)
CPC H04N 21/23805 (2013.01) [H04N 21/234381 (2013.01); H04N 21/25816 (2013.01); H04N 21/4384 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A system for switching from delivering a first video signal to a sink device to delivering a second video signal to the sink device, the system comprising:
(a) a repeater device connected to the sink device, the sink device being previously authenticated, the repeater device being further configured to
(1) receive the first video signal outputted by a first source device, the first source device being previously authenticated, and deliver the first video signal to the sink device, the first video signal having a first frame rate,
(2) receive a command to switch from receiving the first video signal to receiving the second video signal, the second video signal being outputted by a second source device,
(3) terminate receiving the first video signal,
(4) deliver a temporary video signal to the sink device during authentication of the second source device so that the sink device remains authenticated while the second source device is being authenticated, the repeater device setting the frame rate of the temporary video signal to a minimum variable refresh rate (VRR) supported by the sink device, the minimum VRR being less than the first frame rate, and discontinue delivery of the temporary video signal to the sink device upon completion of authentication of the second source device, and
(5) receive the second video signal upon the completion of authentication of the second source device, and deliver the second video signal to the sink device.