US007774280B2
`
`(12) United States Patent
`US 7,774,280 B2
`(45) Date of Patent:
`Aug. 10, 2010
`Nguyen et al.
`
`(10) Patent No.:
`
`(54) SYSTEM AND METHOD FOR MANAGING
`TRANSFER OF RIGHTS USING SHARED
`STATE VARIABLES
`
`(56)
`
`References Cited
`U.S. PATENT DOCUMENTS
`
`3,263,158 A
`
`7/1966 Bargen et a1.
`
`(75)
`
`Inventors: Mai Nguyen, Buena Park, CA (US); Xin
`Wang, Torrance, CA (US); Thanh Ta,
`Huntington Beach, CA (US); Guillermo
`Lao, Torrance, CA (US); Eddie J. Chen,
`Rancho Palos Verdes, CA (US)
`
`(73) Assignee: ContentGuard Holdings, Inc.,
`Wilmington, DE (US)
`
`(*)
`
`Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 1529 days.
`
`(21)
`
`Appl. No.:
`
`10/956,121
`
`(22)
`
`Filed:
`
`Oct. 4, 2004
`
`(65)
`
`Prior Publication Data
`
`US 2005/0060571 A1
`
`Mar. 17, 2005
`
`Related U.S. Application Data
`
`(63) Continuation-in-part of application No. 10/ 162,701,
`filed on Jun. 6, 2002.
`
`(60)
`
`(51)
`
`(52)
`(58)
`
`Provisional application No. 60/331,624, filed on Nov.
`20, 2001, provisional application No. 60/331,623,
`filed on Nov. 20, 2001, provisional application No.
`60/331,621, filed on Nov. 20, 2001, provisional appli-
`cation No. 60/296,113, filed on Jun. 7, 2001, provi-
`sional application No. 60/296,117, filed on Jun. 7,
`2001 , provisional application No. 60/296,118, filed on
`Jun. 7, 2001.
`
`Int. Cl.
`G06F 7/04
`
`(2006.01)
`(2006.01)
`G06F 7/30
`(2006.01)
`H04N 7/16
`U.S. Cl.
`........................................... 705/59; 726/27
`Field of Classification Search .............. 705/50779
`
`(Continued)
`FOREIGN PATENT DOCUMENTS
`
`BR
`
`9810967 A
`
`10/2001
`
`(Continued)
`OTHER PUBLICATIONS
`
`Workshop on Digital Rights Management for the Web, World Wide
`Web Consortium, Minutes from the Architecture/Infrastructure Ses-
`sion, Jan. 2001.*
`
`(Continued)
`
`Primary ExamineriAndrew J. Fischer
`Assistant ExamineriThomas West
`
`(74)Attorney, Agent, orFirmiNixon Peabody, LLP; Marc S.
`Kaufman; Stephen M. Hertzler
`
`(57)
`
`ABSTRACT
`
`A method, system and device for transferring rights adapted
`to be associated with items from a rights supplier to a rights
`consumer, including obtaining a set of rights associated with
`an item, the set of rights including meta-rights specifying
`derivable rights that can be derived from the meta-; determin-
`ing whether the rights consumer is entitled to the derivable
`rights specified by the meta-rights; and deriving at least one
`right from the derivable rights, if the rights consumer is
`entitled to the derivable rights specified by the meta-rights,
`wherein the derived right includes at least one state variable
`based on the set of rights and used for determining a state of
`the derived right.
`
`See application file for complete search history.
`
`36 Claims, 14 Drawing Sheets
`
`70
`
`40
`
`10
`
`/
`
`‘
`
`
`(C1111?
`:7
`Lyman,
`
`
`_________________
`
`
`
`Clearinghouse %
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`U.S. PATENT DOCUMENTS
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`
`>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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`
`GOOG 1001
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`Bob
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`any Foo club member
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`simultaneous use = 5
`state variable id = um:foo:club
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`state variable id =
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`1408
`
`1405
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`simultaneous use = 5
`
`state variable id =
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`state variable id = priority_2
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`simultaneous use = 5
`state variable id =
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`
`simultaneous use = 5
`state variable id =
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`U.S. Patent
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`Aug. 10, 2010
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`Sheet 14 0f 14
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`US 7,774,280 B2
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`US 7,774,280 B2
`
`1
`SYSTEM AND METHOD FOR MANAGING
`TRANSFER OF RIGHTS USING SHARED
`STATE VARIABLES
`
`RELATED APPLICATION DATA
`
`This application is a continuation-in-part application of
`co-pending application Ser. No. 10/162,701 filed on Jun. 6,
`2002, which claims benefit from U.S. provisional applica-
`tions Ser. Nos. 60/331,624, 60/331,623, and 60/331,621 filed
`on Nov. 20, 2001, and U.S. provisional applications Ser. Nos.
`60/296,113, 60/296,117, and 60/296,118 filed on Jun. 7,
`2001, the entire disclosures of all of which are hereby incor-
`porated by reference herein.
`
`FIELD OF THE INVENTION
`
`The present invention generally relates to rights transfer
`and more particularly to a method, system and device for
`managing transfer of rights using shared state variables.
`
`BACKGROUND OF THE INVENTION
`
`One ofthe most important issues impeding the widespread
`distribution of digital works (i.e. documents or other content
`in forms readable by computers), via electronic means, and
`the Internet in particular,
`is the current lack of ability to
`enforce the intellectual property rights of content owners
`during the distribution and use of digital works. Efforts to
`resolve this problem have been termed “Intellectual Property
`Rights Management” (“IPRM”), “Digital Property Rights
`Management” (“DPRM”), “Intellectual Property Manage-
`ment” (“IPM”), “Rights Management” (“RM”), and “Elec-
`tronic Copyright Management”
`(“ECM”),
`collectively
`referred to as “Digital Rights Management (DRM)” herein.
`There are a number of issues to be considered in effecting a
`DRM System. For example, authentication, authorization,
`accounting, payment and financial clearing, rights specifica-
`tion, rights verification, rights enforcement, and document
`protection issues should be addressed. U.S. Pat. Nos. 5,530,
`235, 5,634,012, 5,715,403, 5,638,443, and 5,629,980, the
`disclosures of which are incorporated herein by reference,
`disclose DRM systems addressing these issues.
`Two basic DRM schemes have been employed, secure
`containers and trusted systems. A “secure container” (or sim-
`ply an encrypted document) offers a way to keep document
`contents encrypted until a set of authorization conditions are
`met and some copyright terms are honored (e. g., payment for
`use). After the various conditions and terms are verified with
`the document provider, the document is released to the user in
`clear form. Commercial products such as CRYPTOLOPESTM
`and DIGIBOXESTM fall into this category. Clearly, the secure
`container approach provides a solution to protecting the
`document during delivery over insecure channels, but does
`not provide any mechanism to prevent legitimate users from
`obtaining the clear document and then using and redistribut-
`ing it in violation of content owners’ intellectual property.
`In the “trusted system” approach, the entire system is
`responsible for preventing unauthorized use and distribution
`of the document. Building a trusted system usually entails
`introducing new hardware such as a secure processor, secure
`storage and secure rendering devices. This also requires that
`all software applications that run on trusted systems be cer-
`tified to be trusted. While building tamper-proof trusted sys-
`tems is a real challenge to existing technologies, current mar-
`ket trends suggest that open and untrusted systems, such as
`PC’s and workstations using browsers to access the Web, will
`
`10
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`15
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`20
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`25
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`30
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`35
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`40
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`45
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`50
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`60
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`2
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`be the dominant systems used to access digital works. In this
`sense, existing computing environments such as PC’s and
`workstations equipped with popular operating systems (e. g.,
`WindowsTM, LinuxTM, and UNIX) and rendering applica-
`tions, such as browsers, are not trusted systems and cannot be
`made trusted without significantly altering their architec-
`tures. Of course, alteration of the architecture defeats a pri-
`mary purpose of the Web, i.e. flexibility and compatibility.
`As an example, U.S. Pat. No. 5,634,012,