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System and method of applying multiple adaptive privacy control layers to multi-channel bitstream data

  • US 10,305,683 B1
  • Filed: 12/29/2017
  • Issued: 05/28/2019
  • Est. Priority Date: 12/29/2017
  • Status: Active Grant
First Claim
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1. A non-transitory computer readable medium storing instructions executable by one or more processing units, the instructions comprising instructions to:

  • receive an indication of a first portion of a first bitstream of a media file, wherein the first bitstream corresponds to a first channel;

    receive an indication of a second portion of a second bitstream of a media file, wherein the second bitstream corresponds to a second channel;

    crop the first and second portions;

    generate a first scrambled portion and a second scrambled portion by transposing a plurality of bits of the first cropped portion with a plurality of bits of the second cropped portion, wherein the first and second cropped portions are of different lengths corresponding to different periods of time;

    encrypt the first scrambled portion with a first encryption key, and the second scrambled portion with a second encryption key;

    generate a first control wave for the first encrypted portion and a second control wave for the second encrypted portion;

    generate a first steganographic wave by multiplexing the first encrypted portion with the first control wave, and a second steganographic wave by multiplexing the second encrypted portion with the second control wave, wherein the first steganographic wave is the same length as the first cropped portion and the second steganographic wave is the same length as the second cropped portion; and

    append the first and second steganographic waves to the media file.

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