Watermark system
First Claim
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1. A method for examining an electronic representation of an item for a watermark, the method comprising:
- examining at least a first electronic representation of an item for a watermark in accordance with a first watermark definition stored in a watermark definition store;
receiving a signal indicating that a second watermark definition is to be used for examining electronic representations; and
performing the following in response to receiving the signal;
examining at least a second electronic representation of an item for a watermark in accordance with the second watermark definition.
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Abstract
A method for examining an electronic representation of an item for a watermark, the method including examining at least a first electronic representation of an item for a watermark in accordance with a first watermark definition, receiving a signal indicating that a second watermark definition is to be used for examining electronic representations, and examining at least a second electronic representation of an item for a watermark in accordance with the second watermark definition.
Related apparatus and methods are also provided.
17 Citations
16 Claims
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1. A method for examining an electronic representation of an item for a watermark, the method comprising:
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examining at least a first electronic representation of an item for a watermark in accordance with a first watermark definition stored in a watermark definition store; receiving a signal indicating that a second watermark definition is to be used for examining electronic representations; and performing the following in response to receiving the signal; examining at least a second electronic representation of an item for a watermark in accordance with the second watermark definition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A watermark examiner for examining an electronic representation of an item for a watermark, the examiner comprising:
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a watermark definition store operative to store a watermark definition; watermark examination apparatus operatively associated with the watermark definition store and operative to examine an electronic representation of an item for a watermark in accordance with the watermark definition stored in the watermark definition store; and a watermark definition signal receiver operative to receive a signal indicating that a new watermark definition is to be used for examining electronic representations and to store the new watermark definition in the watermark definition store, wherein the watermark examination apparatus is operative to examine the electronic representation of an item for a watermark in accordance with the new watermark definition in response to receipt of the signal by the watermark definition signal receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification