Methods and systems for improved modulation of video signals
View Patent ↗A method for modulating a video signal. Frames of a plurality of frames are selected for modulation. A first magnitude alternation pattern is designated for each of a first area of a field of the selected frames. A second magnitude alternation pattern is designated for each of a second area of the field of the selected frames. The intensity of a plurality of pixels of a plurality of scan lines of the field of the selected frames is altered as designated by either the first magnitude alternation pattern or the second magnitude alternation pattern.
1. A method comprising:
receiving, on a processor, a selection of a plurality of frames of a video signal for modulation; and
altering, on a processor, intensity of a plurality of pixels of an encoding area of the selection of the plurality of frames based on an inconsistent line intensity pattern to create a modulated video signal, wherein one or more pixels of the plurality of pixels on a particular line of a particular frame within the encoding area are being altered and one or more remaining pixels on the particular line of the particular frame within the encoding area are being unaltered in accordance with the inconsistent line intensity pattern, the encoding area being in an active portion of the modulated video signal.
2. The method of claim 1 , further comprising:
defining dimensions of the encoding area based on a type of video program associated with the video signal and an amount of screen movement associated with the video program.
3. The method of claim 1 , wherein the modulated video signal includes an auxiliary signal that is subliminally modulated in the active portion of the modulated video signal.
4. The method of claim 1 , wherein the inconsistent line intensity pattern includes a dashed intensity pattern.
5. The method of claim 1 , wherein the inconsistent line intensity pattern includes a randomly dashed intensity pattern.
6. The method of claim 1 , wherein the video signal is an analog video signal.
7. A method comprising:
altering, on a processor, intensity of a first plurality of pixels of a first sub-area of an encoding area of a frame based on a first magnitude alteration pattern;
altering, on a processor, the intensity of a second plurality of pixels of a second sub-area of the encoding area of the frame based on the first magnitude alteration pattern; and
altering, on a processor, the intensity of a third plurality of pixels of a transition area based on a second magnitude alteration pattern, the transition area being between the first subarea and the second sub-area, wherein the first magnitude alteration pattern is not the same pattern as the second magnitude alteration pattern and the second magnitude alteration pattern reduces transition line visibility between the first sub-area and the second sub-area.
8. The method of claim 7 , further comprising:
receiving an operator instruction, wherein the altering intensity of the first plurality of pixels, the second plurality of pixels, and the third plurality of pixels is based on the receiving of the operator instruction.
9. The method of claim 7 , wherein the first magnitude alteration pattern includes altering the intensity of the first plurality of pixels and the second plurality of pixels by a first magnitude adjustment and the second magnitude alteration pattern includes altering the intensity of the third plurality of pixels by a second magnitude adjustment, wherein the first magnitude adjustment is less than the second magnitude adjustment.
10. The method of claim 7 , wherein the second magnitude alteration pattern includes a phased-in intensity alteration pattern.
11. The method of claim 7 , wherein the second magnitude alteration pattern includes a phased-out intensity alteration pattern.
12. The method of claim 7 , wherein the second magnitude alteration pattern includes a morphed pattern.
13. The method of claim 7 , wherein the encoding area includes a field of the frame.
14. A system comprising:
a source; and
an encoder configured to
receive a video signal from the source;
receive a selection of a plurality of frames of the video signal for modulation; and
alter intensity of a plurality of pixels of an encoding area of the selection of the plurality of frames based on an inconsistent line intensity pattern to create a modulated video signal, wherein one or more pixels of the plurality of pixels on a particular line of a particular frame within the encoding area are being altered and one or more remaining pixels on the particular line of the particular frame within the encoding area are being unaltered in accordance with the inconsistent line intensity pattern, the encoding area being in an active portion of the modulated video signal.
15. The system of claim 14 , wherein the encoder is configured to define dimensions of the encoding area using a type of video associated with the video signal and an amount of screen movement associated with the video.
16. The system of claim 14 , wherein the encoder is configured to produce the modulated video signal including an auxiliary signal that is subliminally modulated in the active portion of the modulated video signal.
17. The system of claim 14 , wherein the inconsistent line intensity pattern includes a dashed intensity pattern.
18. The system of claim 14 , wherein the inconsistent line intensity pattern includes a randomly dashed intensity pattern.
19. The system of claim 14 , wherein the video signal is an analog video signal.
20. The system of claim 14 , wherein the active portion of the modulated video signal includes a viewable portion of a video program.