United States Patent
`
`[19]
`
`5,943,422
`Aug. 24, 1999
`Date of Patent:
`Van Wieet al.
`[45]
`
`[11]
`
`Patent Number:
`
`US005943422A
`
`[54]
`
`STEGANOGRAPHIC TECHNIQUES FOR
`SECURELY DELIVERING ELECTRONIC
`DIGITAL RIGHTS MANAGEMENT
`CONTROL INFORMATION OVER
`INSECURE COMMUNICATION CHANNELS
`
`Inventors: David M. Van Wie, Sunnyvale; Robert
`P. Weber, Menlo Park, both of Calif.
`
`Assignee:
`
`InterTrust Technologies Corp.,
`Sunnyvale, Calif.
`
`OTHER PUBLICATIONS
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`
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`Primary Examiner—David Cain
`Attorney, Agent, or Firm—Nixon & Vanderhyc P.C.
`
`[57]
`
`ABSTRACT
`
`Electronic steganographic techniques can be used to encode
`a rights management control signal onto an information
`signal carried over an insecure communications channel.
`Steganographic techniques ensure that the digital control
`informationis substantially invisibly and substantially indel-
`ibly carried by the information signal. These techniques can
`provide end-to-end rights management protection of an
`information signal irrespective of transformations between
`analog and digital. An electronic appliance can recover the
`control information and use it for electronic rights manage-
`ment to provide compatibility with a Virtual Distribution
`Environment. In one example, the system encodes low data
`rale pointers within high bandwidth time periods of the
`content signal to improve overall control information read/
`seek times.
`
`(List continued on next page.)
`
`348 Claims, 30 Drawing Sheets
`
`
`
`oN
`o6c)
`Oo )
`Ley
`EXAMPLE STEGANOGRAPHICALLY
`ENCODING ELECTRONIC CONTENTSIN AN IMAGE
`
`Roku Exhibit 1019
`Roku Exhibit 1019
`Roku v. Videolabs
`Roku v. Videolabs
`
`

`

`5,943,422
`
`Page 2
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`Page 3
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`
`

`

`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 1 of 30
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`5,943,422
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`Aug.24, 1999
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`
`Sheet 2 of 30
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`U.S. Patent
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`Aug.24, 1999
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`Sheet 3 of 30
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`5,943,422
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`U.S. Patent
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`Aug. 24, 1999
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`Sheet 4 of 30
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`5,943,422
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`

`

`U.S. Patent
`
`Aug. 24, 1999
`
`Sheet 5 of 30
`
`5,943,422
`
`ANALOG
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`

`

`Aug.24, 1999
`
`Sheet 6 of 30
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`5,943,422
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`U.S. Patent
`
`Aug. 24, 1999
`
`Sheet 7 of 30
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`5,943,422
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`U.S. Patent
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`Aug.24, 1999
`
`Sheet 8 of 30
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`5,943,422
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`Aug.24, 1999
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`U.S. Patent
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`Aug.24, 1999
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`U.S. Patent
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`Aug.24, 1999
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`Sheet 11 of 30
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`U.S. Patent
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`Aug. 24, 1999
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`Sheet 12 of 30
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`U.S. Patent
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`Aug.24, 1999
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`U.S. Patent
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`Aug. 24, 1999
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`U.S. Patent
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`Aug.24, 1999
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`U.S. Patent
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`Aug.24, 1999
`
`Sheet 18 of 30
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`5,943,422
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`5,943,422
`
`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 19 of 30
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`104 FIG.
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`PRIVATE HEADER
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`KEY BLOCK(S) _
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`CONTROL SET
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`
`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 20 of 30
`
`5,943,422
`
`136
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`

`

`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 21 of 30
`
`5,943,422
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`302
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`EXTRACT
`STEGANOGRAPHICALLY
`ENCODED DATA
`
`
`
`U.S. Patent
`
`Aug. 24, 1999
`
`Sheet 22 of 30
`
`5,943,422
`
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`
`

`

`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 23 of 30
`
`5,943,422
`
`302
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`APPLY RULES
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`
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`
`

`

`U.S. Patent
`
`Aug. 24, 1999
`
`Sheet 24 of 30
`
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`

`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 25 of 30
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`5,943,422
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`

`Aug.24, 1999
`
`Sheet 26 of 30
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`5,943,422
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`U.S. Patent
`
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`

`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 27 of 30
`
`5,943,422
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`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 28 of 30
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`
`
`5,943,422
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`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 29 of 30
`
`540
`
`5,943,422
`
`
`
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`

`

`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 30 of 30
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`5,943,422
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`1
`STEGANOGRAPHIC TECHNIQUES FOR
`SECURELY DELIVERING ELECTRONIC
`DIGITAL RIGHTS MANAGEMENT
`CONTROL INFORMATION OVER
`INSECURE COMMUNICATION CHANNELS
`
`CROSS REFERENCE TO RELATED
`APPLICATION
`
`This application is rclated to commonly assigned appli-
`cation Ser. No. 08/388,107 of Ginter et al., filed Feb. 13,
`1995, entitled “SYSTEMS AND METHODS FOR
`SECURE TRANSACTION MANAGEMENTAND ELEC-
`TRONIC RIGHTS PROTECTION”(attorney reference
`numbe