Method and apparatus for analog insertion of low frequency watermarks
First Claim
Patent Images
1. An apparatus for inserting a watermark onto an illuminated image sequence, comprising:
- a light modulator for modulating a light source; and
a controller for controlling the light modulator such that a low frequency watermark is inserted onto the illuminated image sequence.
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Abstract
A method and apparatus for inserting a watermark onto an illuminated image sequence. A light modulator modulates a light source. A controller controls the light modulator such that a low frequency watermark is inserted onto the illuminated image sequence.
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Citations
33 Claims
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1. An apparatus for inserting a watermark onto an illuminated image sequence, comprising:
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a light modulator for modulating a light source; and
a controller for controlling the light modulator such that a low frequency watermark is inserted onto the illuminated image sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for inserting a watermark, comprising:
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a light source for illuminating an image sequence;
a lens for modifying the light from the light source;
a light modulator for modulating the modified light; and
a controller for controlling the light modulator such that a low frequency watermark is inserted onto the illuminated image sequence. - View Dependent Claims (17)
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18. An apparatus for inserting a watermark, comprising:
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a first light source for illuminating an image sequence;
a first lens for modifying the light from the first light source;
a first light modulator for modulating the modified light from the first light source;
a second light source;
a second lens for modifying the light from the second light source;
a second light modulator for modulating the modified light from the second light source; and
a controller for controlling the first light modulator and the second light modulator such that a low frequency watermark is inserted onto the illuminated image sequence.
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19. A method for inserting a watermark onto an illuminated image sequence, comprising:
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modulating a light source with a light modulator; and
controlling the light modulator such that a low frequency watermark is inserted onto the illuminated image sequence. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification