US 12,244,881 B2
Method and system for secure over-the-top live video delivery
Kevin J. Ma, Nashua, NH (US); Robert Hickey, Bedford, MA (US); and Paul Tweedale, Andover, MA (US)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Ericsson AB, Stockholm (SE)
Filed on Oct. 25, 2022, as Appl. No. 17/973,138.
Application 17/973,138 is a continuation of application No. 17/388,389, filed on Jul. 29, 2021, granted, now 11,483,604.
Application 17/388,389 is a continuation of application No. 16/672,463, filed on Nov. 3, 2019, granted, now 11,122,313, issued on Sep. 14, 2021.
Application 16/672,463 is a continuation of application No. 15/910,911, filed on Mar. 2, 2018, granted, now 10,477,257, issued on Nov. 12, 2019.
Application 15/910,911 is a continuation of application No. 15/067,219, filed on Mar. 11, 2016, granted, now 9,912,975, issued on Mar. 6, 2018.
Application 15/067,219 is a continuation of application No. 14/266,368, filed on Apr. 30, 2014, granted, now 9,313,178, issued on Apr. 12, 2016.
Application 14/266,368 is a continuation of application No. 13/530,997, filed on Jun. 22, 2012, granted, now 8,751,807, issued on Jun. 10, 2014.
Claims priority of provisional application 61/500,316, filed on Jun. 23, 2011.
Prior Publication US 2023/0042354 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 21/254 (2011.01); G11B 27/10 (2006.01); H04L 9/08 (2006.01); H04L 9/14 (2006.01); H04L 9/40 (2022.01); H04N 21/2347 (2011.01); H04N 21/2387 (2011.01); H04N 21/239 (2011.01); H04N 21/426 (2011.01); H04N 21/4627 (2011.01); H04N 21/6334 (2011.01); H04N 21/845 (2011.01)
CPC H04N 21/2541 (2013.01) [G11B 27/10 (2013.01); H04L 9/0819 (2013.01); H04L 9/0891 (2013.01); H04L 9/14 (2013.01); H04L 63/0428 (2013.01); H04N 21/2347 (2013.01); H04N 21/2387 (2013.01); H04N 21/2393 (2013.01); H04N 21/42623 (2013.01); H04N 21/4627 (2013.01); H04N 21/63345 (2013.01); H04N 21/8456 (2013.01); H04L 2209/24 (2013.01); H04L 2209/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for managing secure distribution of audio or video content, comprising:
generating a series of content encryption keys for encrypting a single audio or video content item, each content encryption key associated with a different portion of the single audio or video content item wherein client devices requesting the single audio or video content item is further provided with key expiration information usable by the client devices to identify transitions between portions of the single audio or video content item that use different ones of the content encryption keys; and
providing the content encryption keys to a license server for delivery to the client devices for use in decrypting the content item, the license server being operative to establish that a requesting client device is authorized to access the content item, the license server being further operative to securely deliver the content encryption keys to a requesting client device whose authorization to access the content item has been established.