Method and system for enhanced modulation of video signals
First Claim
1. A method comprising:
- receiving a video signal from a signal source, the video signal including plural frames having scan lines with designated intensities for representing at least one of an image or a video;
selecting portions of one or more of the scan lines in one or more frames of the video signal; and
changing intensities of the portions of the one or more scan lines relative to the designated intensities of the portions of the one or more scan lines by raising or lowering the intensities of the portions of the one or more scan lines,wherein raising or lowering the intensities of the portions of the one or more scan lines encodes a carrier signal in the video signal without the carrier signal being noticeable to a human viewer of the video signal.
3 Assignments
0 Petitions
Accused Products
Abstract
A method for encoding a carrier signal in a video signal, the video signal having one or more frames, the frames each having a first field and a second field, the first field and the second field of each frame having a plurality of scan lines, each having a plurality of pixels with an intensity value indicating brightness, the method comprising selectively designating the plurality of scan lines of the first field of the one or more frames as up lines or down lines, calculating an optimum amount of adjustment to the pixels of the up lines and the down lines, and selectively increasing the intensity value of pixels of the up lines and decreasing the intensity value of pixels of the down lines by the optimum amount of adjustment thereby modulating the video signal with a carrier signal and creating a modulated video signal.
-
Citations
19 Claims
-
1. A method comprising:
-
receiving a video signal from a signal source, the video signal including plural frames having scan lines with designated intensities for representing at least one of an image or a video; selecting portions of one or more of the scan lines in one or more frames of the video signal; and changing intensities of the portions of the one or more scan lines relative to the designated intensities of the portions of the one or more scan lines by raising or lowering the intensities of the portions of the one or more scan lines, wherein raising or lowering the intensities of the portions of the one or more scan lines encodes a carrier signal in the video signal without the carrier signal being noticeable to a human viewer of the video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An encoder device comprising:
-
a video input configured to receive a video signal provided by a signal source, the video signal including plural frames having scan lines with designated intensities for representing at least one of an image or a video; and one or more processors configured to select portions of one or more of the scan lines in one or more frames of the video signal and change intensities of the portions of the one or more scan lines relative to the designated intensities of the portions of the one or more scan lines, wherein raising or lowering the intensities of the portions of the one or more scan lines encodes a carrier signal in the video signal without the carrier signal being noticeable to a human viewer of the video signal, wherein the scan lines include plural pixels and the one or more processors are configured to change the intensities of the portions of the one or more scan lines by raising or lowering the intensities of the video signals in the pixels of the portions of the one or more scan lines by designated amounts. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification