Network linking method using information embedded in data objects that have inherent noise
First Claim
Patent Images
1. A method of detecting if information in a header of a file which contains data has been changed from an initial state in which said header initially containing certain information, said method comprising the steps of:
- embedding a watermark in said data, said watermark having a payload including said certain information, reading said watermark and detecting the payload carried by said watermark, and comparing the said detected payload to the information in the header of said file to determine if they match.
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Abstract
A given data object can effectively contain both a graphical representation to a network user and embedded information, such as the URL address of another network node, thereby to permit the object itself to serve as an automated hot link. The underlying development tools and web site browsers create and identify such an object for use in a manner similar to a hot link, as provided on the World Wide Web.
300 Citations
9 Claims
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1. A method of detecting if information in a header of a file which contains data has been changed from an initial state in which said header initially containing certain information, said method comprising the steps of:
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embedding a watermark in said data, said watermark having a payload including said certain information, reading said watermark and detecting the payload carried by said watermark, and comparing the said detected payload to the information in the header of said file to determine if they match. - View Dependent Claims (2, 3, 4)
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5. A method of detecting if information in a header of a file which contains data has been changed from an initial state in which said header initially containing certain information, said data having embedded therein a digital watermark, said digital watermark having a payload including said certain information, said method comprising the steps of:
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reading said watermark and detecting said payload carried by said watermark, and comparing the said detected payload to the information in the header of said file to determine if they match. - View Dependent Claims (6, 7, 8)
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9. A method of controlling the operation of a process by detecting if information in a header of a file which contains data has been changed from an initial state in which said header initially containing certain information, said data having embedded therein a digital watermark, said digital watermark having a payload including said certain information, said method comprising the steps of:
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reading said watermark and detecting said payload carried by said watermark, comparing the said detected payload to the information in the header of said file to determine if they match, and controlling said process in response to said comparison.
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Specification