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Fingerprinting of data

A fingerprint device and media technology, applied in transmission systems, digital transmission systems, secure communication devices, etc., can solve problems such as inconvenience and time-consuming

Active Publication Date: 2012-06-20
SONY PICTURES ENTERTAINMENT JAPAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when many distribution copies are to be legally distributed to many different customers, digitally watermarking each distribution copy individually often proves to be inconvenient and time-consuming

Method used

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  • Fingerprinting of data
  • Fingerprinting of data
  • Fingerprinting of data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] This disclosure describes systems and methods that provide greater efficiency in fingerprinted media generation and system robustness.

[0020] In one implementation, the fingerprinting system provides fingerprinting of data using a pseudo-random combination of marked and unmarked content. The fingerprinted data can then be used to uniquely identify content usage disputes. The system is suitable for various types of data such as video and audio elementary data or multiplexed streams. The system is also applicable to packaged media such as DVDs and videotapes, content downloaded from the Internet and / or any other media.

[0021] figure 1 An implementation of a process for generating fingerprinted content using the first master 100 and the second master 102 is illustrated. In other implementations, a different number of replicas may be employed, such as three or more. The process involves generating multiple masters (m i ), where the subscript i represents the ith or...

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Abstract

A fingerprinting apparatus, comprising: a plurality of receiving units to receive a plurality of input datasets, each of the plurality of input datasets divided into a plurality of input segments, at least one of the plurality of input datasets uniquely marked; a selector to select at least one input segment from one of at least two different input datasets of the plurality of input datasets; and at least one combiner to arrange the selected at least one input segment to produce an output dataset having a plurality of output segments, such that the number of output segments is equal to the number of input segments in each input dataset.

Description

[0001] This application is a divisional application of an invention patent application with an application date of March 31, 2004, an application number of 200480023708.3, and an invention title of "Adding Fingerprints to Data". Cross References to Related Applications [0002] This application claims priority benefit to co-pending US Provisional Patent Application Serial No. 60 / 480687, filed June 23, 2003, and entitled "Fingerprinting Data Using a Pseudorandom Combination of Marked and Unmarked Content." This application also claims priority benefit to co-pending US Provisional Patent Application Serial No. 60 / 491763, filed July 31, 2003, and entitled "Fingerprinting Data." Priority benefit of the filing dates of June 23, 2003 and July 31, 2003 is hereby claimed, and the disclosures of these provisional patent applications are hereby incorporated by reference. technical field [0003] The present invention relates to a method of identifying the source of media, a fingerprint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/00G06FG06K9/00G06K9/36G11B20/00H04L9/00
CPCG11B20/00086G06F21/10G06T1/0021G06T2201/0064G06F15/00G06F17/00H04L9/00G06F21/16G06F21/1063G11B20/00884
Inventor S·马利克R·萨希
Owner SONY PICTURES ENTERTAINMENT JAPAN