METHOD AND SYSTEM FOR ENHANCED MODULATION OF VIDEO SIGNALS
First Claim
Patent Images
1. A method comprising:
- accessing an encoding pattern for a frame of a video signal, the encoding pattern designating a grouping of pixels of the frame for alteration;
evaluating a pixel value of each pixel of the grouping of pixels according to a plurality of evaluation techniques to determine an adjustment value; and
altering the pixel value of the grouping of pixels in accordance with the adjustment value to modulate data in the video signal.
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Abstract
A method, apparatus and system for signal modulation. A plurality of pixels are selected in a pattern such that a first pixel group of the plurality of pixels is unpaired with a second pixel group of the plurality of pixels throughout the pattern in a portion of a video signal. The intensity of the plurality of the pixels is altered at a constant magnitude in the portion of the video signal pursuant to the pattern in a substantially invisible way.
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Citations
20 Claims
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1. A method comprising:
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accessing an encoding pattern for a frame of a video signal, the encoding pattern designating a grouping of pixels of the frame for alteration;
evaluating a pixel value of each pixel of the grouping of pixels according to a plurality of evaluation techniques to determine an adjustment value; and
altering the pixel value of the grouping of pixels in accordance with the adjustment value to modulate data in the video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 18)
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13. An encoding system comprising:
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a signal source; and
an encoder configured to;
access an encoding pattern for a frame of a video signal, the encoding pattern designating a grouping of pixels of the frame for alteration;
evaluate a pixel value of each pixel of the grouping of pixels according to a plurality of evaluation techniques to determine an adjustment value; and
alter the pixel value of the grouping of pixels in accordance with the adjustment value to modulate data in the video signal. - View Dependent Claims (14, 15, 16, 17)
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19. An apparatus comprising:
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means for accessing an encoding pattern for a frame of a video signal, the encoding pattern designating a grouping of pixels of the frame for alteration;
means for evaluating a pixel value of each pixel of the grouping of pixels according to a plurality of evaluation techniques to determine an adjustment value; and
means for altering the pixel value of the grouping of pixels in accordance with the adjustment value to modulate data in the video signal. - View Dependent Claims (20)
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Specification