US 12,088,875 B2
Signature retrieval and matching for media monitoring
Daniel Nelson, Tampa, FL (US); Venugopal Srinivasan, Palm Harbor, FL (US); Arun Ramaswamy, Tampa, FL (US); Raghuram Ranganathan, Tampa, FL (US); and Kenneth William McArthur, Dunedin, FL (US)
Assigned to The Nielsen Company (US), LLC, New York, NY (US)
Filed by The Nielsen Company (US), LLC, New York, NY (US)
Filed on Dec. 19, 2022, as Appl. No. 18/068,247.
Application 18/068,247 is a continuation of application No. 17/099,483, filed on Nov. 16, 2020, granted, now 11,533,535.
Application 17/099,483 is a continuation of application No. 16/188,165, filed on Nov. 12, 2018, granted, now 10,841,650, issued on Nov. 17, 2020.
Application 16/188,165 is a continuation of application No. 15/607,006, filed on May 26, 2017, granted, now 10,129,591, issued on Nov. 13, 2018.
Application 15/607,006 is a continuation of application No. 14/469,245, filed on Aug. 26, 2014, granted, now 9,668,020, issued on May 30, 2017.
Claims priority of provisional application 61/976,168, filed on Apr. 7, 2014.
Prior Publication US 2023/0122391 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 21/44 (2011.01); G06V 20/40 (2022.01); H04H 60/31 (2008.01); H04N 21/234 (2011.01); H04N 21/258 (2011.01); H04N 21/4408 (2011.01); H04N 21/442 (2011.01); H04N 21/8352 (2011.01); H04H 60/40 (2008.01); H04H 60/56 (2008.01)
CPC H04N 21/44213 (2013.01) [G06V 20/46 (2022.01); H04H 60/31 (2013.01); H04N 21/23418 (2013.01); H04N 21/25883 (2013.01); H04N 21/25891 (2013.01); H04N 21/44008 (2013.01); H04N 21/4408 (2013.01); H04N 21/44204 (2013.01); H04N 21/44222 (2013.01); H04N 21/8352 (2013.01); H04H 60/40 (2013.01); H04H 60/56 (2013.01); H04H 2201/90 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one memory having stored therein computer readable instructions that, upon execution by the at least one processor, cause the apparatus to at least:
obtain a first hash key, a second hash key, and a third hash key representative of first reference media in response to a first query of a first table, the second hash key associated with a second time preceding a first time associated with the first hash key, the third hash key associated with a third time following the first time associated with the first hash key;
evaluate the first hash key for prequalification as a candidate for subsequent signature processing associated with a first site signature by determining whether (i) the second hash key corresponds to a second site signature preceding the first site signature in time and (ii) the third hash key corresponds to a third site signature following the first site signature in time; and
determine that prequalification of the first hash key is successful in response to a determination that both (i) the second hash key corresponds to the second site signature and (ii) the third hash key corresponds to the third site signature.