Streaming piracy detection method and system
In one embodiment, a command is received from a video provider at a media rendering device, the command being a command to embed a subscriber ID in at least one video frame in a video stream. A random key, k is also received from the video provider at the media rendering device. An injective transformation is invoked for k and the subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods. Logical blocks of the at least one video frame in the video stream are overlaid with one of the near-transparent patterns for its one of the corresponding time periods. Related apparatus, systems, and methods are also described.
1. A method comprising:
invoking, by a media rendering device, an injective transformation for a random key, k, and a subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods, wherein the injective transformation comprises:
mapping the subscriber ID to a set of pairs: {(B1, X1), (B2, X2), . . . , (Bn, Xn)}, wherein n is the total number of logical blocks per video frame, and Xi is the number of time periods to overlay an embedded overlay on block Bi,
creating a set of sequences of the near-transparent patterns, each one of the patterns being associated with one logical block, and
displaying one of the near-transparent patterns of the set of sequences on each one of the logical blocks for the number of time periods; and
overlaying the logical blocks of at least one video frame in a video stream with one of the near-transparent patterns for its one of the corresponding time periods.
2. The method according to claim 1 , further comprising outputting the at least one video frame in the video stream in the logical blocks overlaid with the near-transparent patterns having a color component.
3. The method according to claim 1 , wherein the subscriber ID comprises one of the following: a smart card ID and a device ID.
4. The method according to claim 1 , wherein the size of each of the logical blocks is equal to up to one eighth of a size of a video display screen of the media rendering device.
5. The method according to claim 1 , wherein the time period is one second.
6. The method according to claim 1 , wherein the near-transparent patterns are between 89% and 96% transparent.
7. The method according to claim 1 , wherein the near-transparent patterns are imperceptible to the human eye.
8. The method according to claim 1 , wherein the near-transparent patterns comprise one of: horizontal lines; vertical lines; diagonal lines; circular shapes; triangular shapes; fractal shapes; and an irregular gradient.
9. A system comprising:
a memory storage; and
a processing unit coupled to the memory storage, wherein the processing unit is operative to:
invoke an injective transformation for a random key, k, and a subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods, wherein the processing unit being operative to invoke the injective transformation comprises the processing unit being operative to:
map the subscriber ID to a set of pairs: {(B1, X1), (B2, X2), . . . , (Bn, Xn)}, wherein n is the total number of logical blocks per video frame, and Xi is the number of time periods to overlay an embedded overlay on block Bi,
create a set of sequences of the near-transparent patterns, each one of the patterns being associated with one logical block, and
display one of the near-transparent patterns of the set of sequences on each one of the logical blocks for the number of time periods; and
overlay the logical blocks of at least one video frame in a video stream with one of the near-transparent patterns for its one of the corresponding time periods.
10. The system according to claim 9 , wherein the processing unit is further operative to output the at least one video frame in the video stream in the logical blocks overlaid with the near-transparent patterns having a color component.
11. The system according to claim 9 , wherein the subscriber ID comprises one of the following: a smart card ID and a device ID.
12. The system according to claim 9 , wherein the size of each of the logical blocks is equal to up to one eighth of a size of a video display screen of a media rendering device.
13. The system according to claim 9 , wherein the time period is one second.
14. The system according to claim 9 , wherein the near-transparent patterns are between 89% and 96% transparent.
15. The system according to claim 9 , wherein the near-transparent patterns are imperceptible to the human eye.
16. The system according to claim 9 , wherein the near-transparent patterns comprise one of the following: horizontal lines; vertical lines; diagonal lines; circular shapes; triangular shapes; fractal shapes; and an irregular gradient.
17. A non-transitory computer-readable medium that stores a set of instructions which when executed perform a method comprising:
invoking, by a media rendering device, an injective transformation for a random key, k, and a subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods, wherein the injective transformation comprises:
mapping the subscriber ID to a set of pairs: {(B1, X1), (B2, X2), . . . , (Bn, Xn)}, wherein n is the total number of logical blocks per video frame, and Xi is the number of time periods to overlay an embedded overlay on block Bi,
creating a set of sequences of the near-transparent patterns, each one of the patterns being associated with one logical block, and
displaying one of the near-transparent patterns of the set of sequences on each one of the logical blocks for the number of time periods; and
overlaying the logical blocks of at least one video frame in a video stream with one of the near-transparent patterns for its one of the corresponding time periods.
18. The non-transitory computer-readable medium according to claim 17 , further comprising outputting the at least one video frame in the video stream in the logical blocks overlaid with the near-transparent patterns having a color component.
19. The non-transitory computer-readable medium according to claim 17 , wherein the near-transparent patterns are imperceptible to the human eye.
20. The non-transitory computer-readable medium according to claim 17 , wherein the near-transparent patterns comprise one of: horizontal lines; vertical lines; diagonal lines; circular shapes; triangular shapes; fractal shapes; and an irregular gradient.