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Recording medium, information playback apparatus and method,...

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
Reexamination Certificate

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Security memory device and method for making same

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
Reexamination Certificate

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Steganographic method and device

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
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System and method for tracing tardos fingerprint codes

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
Reexamination Certificate

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System and method for tracing Tardos fingerprint codes

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
Reexamination Certificate

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System for identifying content of digital data

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
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Unauthorized usage monitoring system for image forming...

Information security – Prevention of unauthorized use of data including prevention... – Copy detection
Reexamination Certificate

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