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 configured for modulating a light source; and
a controller configured for controlling the light modulator to selectively alter light transmissivity over space and time 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
53 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 configured for modulating a light source; and a controller configured for controlling the light modulator to selectively alter light transmissivity over space and time 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, 37, 38)
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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 configured for modulating the modified light; and a controller configured for controlling the light modulator to selectively alter light transmissivity over space and time 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 configured for illuminating an image sequence; a first lens configured for modifying the light from the first light source; a first light modulator configured for modulating the modified light from the first light source; a second light source; a second lens configured for modifying the light from the second light source; a second light modulator configured for modulating the modified light from the second light source; and a controller configured for controlling the first light modulator and the second light modulator to selectively alter light transmissivity over space and time 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 to selectively alter light transmissivity over space and time 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, 34, 35, 36)
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39. An apparatus for inserting a watermark onto an illuminated image sequence, comprising:
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means for modulating a light source; and means for controlling the means for modulating to selectively alter light transmissivity over space and time such that a low frequency watermark is inserted onto the illuminated image sequence. - View Dependent Claims (40, 41, 42, 43)
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44. A method, comprising:
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selecting one or more locations for watermark insertion; modulating a light source using a light modulator; and controlling the light modulator to selectively alter light transmissivity over space and time such that a low frequency watermark is inserted onto an image sequence at the one or more locations. - View Dependent Claims (45, 46, 47, 48)
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49. A method, comprising:
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modulating a light source using a light modulator; and receiving a sync signal configured to register a frame of an image sequence; controlling the light modulator to selectively alter light transmissivity over space and time such that a low frequency watermark is inserted onto the frame of the image sequence based on the sync signal. - View Dependent Claims (50, 51, 52, 53)
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Specification