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Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels    
United States Patent6240185   
Link to this pagehttp://www.wikipatents.com/6240185.html
Inventor(s)Van Wie; David M. (Eugene, OR); Weber; Robert P. (Menlo Park, CA)
AbstractElectronic 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 information is substantially invisibly and substantially indelibly 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 management to provide compatibility with a Virtual Distribution Environment. In one example, the system encodes low data rate pointers within high bandwidth time periods of the content signal to improve overall control information read/seek times.



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Drawing from US Patent 6240185
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels - US Patent 6240185 Drawing
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels
Inventor     Van Wie; David M. (Eugene, OR); Weber; Robert P. (Menlo Park, CA)
Owner/Assignee     Intertrust Technologies Corporation (Santa Clara, CA)
Patent assignment
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Publication Date     May 29, 2001
Application Number     09/247,328
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     February 10, 1999
US Classification     380/232 380/205 380/210 380/221 380/227 380/231 705/51 705/52 705/54 705/55 705/59 705/76 713/176 713/189 713/193 726/21
Int'l Classification     H04N 007/167
Examiner     Gregory; Bernarr E.
Assistant Examiner    
Attorney/Law Firm     Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Address
Parent Case     CROSS REFERENCE TO RELATED APPLICATION This application is a continuation of Ser. No. 08/689,606, filed Aug. 12, 1996, now U.S. Pat. No. 5,943,422, issued Aug. 24, 1999, which is herein incorporated by reference; and This application is related to commonly assigned copending application Ser. No. 08/388,107 of Ginter et al., filed Feb. 13, 1995, entitled "SYSTEMS AND METHODS FOR SECURE TRANSACTION MANAGEMENT AND ELECTRONIC RIGHTS PROTECTION" (now abandoned). We incorporate by reference, into this application, the entire disclosure of this prior-filed Ginter et al. patent application just as if its entire written specification and drawings were expressly set forth in this application.
Priority Data    
USPTO Field of Search     705/26 705/30 705/35 705/39 705/40 705/41 705/42 705/43 705/44 705/50 705/51 705/39 705/40 705/41 705/42 705/43 705/44 705/39 705/40 705/41 705/42 705/43 705/44 705/64 705/76 ;39 705/40 705/41 705/42 705/43 705/44 380/3 380/4 380/5 380/9 380/23 380/24 380/25 380/49 380/50 380/54 380/59 380/201 380/202 380/203 380/210 380/221 380/223 380/227 380/228 380/229 380/230 380/231 380/232 380/233 380/234 380/239 380/241 380/242 382/100 382/232 382/233 713/189 713/193 713/194 713/200 713/168 713/176
Patent Tags     steganographic techniques securely delivering electronic digital rights management control information over insecure communication channels
   
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