US 12,242,620 B2
Methods and apparatus to encrypt media for identification
Venkadachalam Ramalingam, Nagercoil (IN)
Assigned to The Nielsen Co. (LLC), New York, NY (US)
Filed by The Nielsen Company (US), LLC, New York, NY (US)
Filed on Oct. 21, 2022, as Appl. No. 17/971,461.
Application 17/971,461 is a continuation of application No. PCT/US2021/028482, filed on Apr. 21, 2021.
Application PCT/US2021/028482 is a continuation of application No. 17/187,422, filed on Feb. 26, 2021, granted, now 11,841,955.
Claims priority of application No. 202011017496 (IN), filed on Apr. 23, 2020.
Prior Publication US 2023/0045053 A1, Feb. 9, 2023
Int. Cl. G06F 21/60 (2013.01); G06F 17/16 (2006.01); G06F 21/10 (2013.01)
CPC G06F 21/602 (2013.01) [G06F 17/16 (2013.01); G06F 21/10 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus comprising:
memory;
machine readable instructions; and
processor circuitry to execute the machine readable instructions to at least:
access a mesh points matrix, the mesh points matrix representative of a mesh generated based on an encryption matrix and excluding overlapping edge connections;
set an upper limit equal to a larger of two values of a vector, respective ones of the two values equal to elements of the vector at indices equal to respective values of a coordinate pair of the mesh points matrix;
set a lower limit equal to a smaller of the two values of the vector;
append a value to an encryption vector, the value based on whether the lower limit is equal to zero, the value equal to a lowest integer not less than a quotient of a number based on a square of the upper limit and two; and
encrypt an input matrix with the encryption vector.