	US 12,452,469 B2
	Devices and methods for switched digital video systems
Wei Wang, Shenzhen (CN); Wenwu Wei, Shenzhen (CN); Zong Chang Guo, Shenzhen (CN); and Chuankai Kou, Shenzhen (CN)
Assigned to ARRIS Enterprises LLC, Suwanee, GA (US)
Filed by ARRIS Enterprises LLC, Suwanee, GA (US)
Filed on Jan. 25, 2022, as Appl. No. 17/584,259.
Claims priority of application No. 202110097195.6 (CN), filed on Jan. 25, 2021.
Prior Publication US 2022/0239958 A1, Jul. 28, 2022
Int. Cl. H04N 21/238 (2011.01); H04N 21/2343 (2011.01); H04N 21/236 (2011.01); H04N 21/2385 (2011.01); H04N 21/438 (2011.01)

CPC H04N 21/2385 (2013.01) [H04N 21/234309 (2013.01); H04N 21/23617 (2013.01); H04N 21/4383 (2013.01)]

17 Claims

1. A first device for switched digital video (SDV) systems, comprising:

a processor; and

a memory coupled to the processor and including executable instructions stored thereon, which, when executed by the processor, cause the first device to perform the following operations:

generating a list of opened channels, wherein the list of opened channels includes at least one data field associated with one or more channels, each data field including a channel identifier and an encoding format identifier, wherein the channel identifier identifies a channel, and the encoding format identifier identifies the encoding format, from among a plurality of encoding formats, of a content stream for the channel identified by the channel identifier; and

sending the list of opened channels to a second device, so that for each data field, the encoding format corresponding to the encoding format identifier of the data field is compared with the decoding capability of the second device, and the data field is retained in response to the encoding format matching the decoding capability, while the data field is removed from the generated list in response to the encoding format not matching the decoding capability; and

periodically updating the list of opened channels according to the second device's past and current selections.