US20090150293A1 - System and method for delivering licenses to a playback device - Google Patents

System and method for delivering licenses to a playback device Download PDF

Info

Publication number
US20090150293A1
US20090150293A1 US12330487 US33048708A US2009150293A1 US 20090150293 A1 US20090150293 A1 US 20090150293A1 US 12330487 US12330487 US 12330487 US 33048708 A US33048708 A US 33048708A US 2009150293 A1 US2009150293 A1 US 2009150293A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
content
game
license
rights
client device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US12330487
Inventor
Wei Yen
David Blythe
John Princen
Pramila Srinivasan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acer Cloud Tech Inc
Original Assignee
BroadOn Communications Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/50Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
    • G06F21/51Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems at application loading time, e.g. accepting, rejecting, starting or inhibiting executable software based on integrity or source reliability
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/50Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
    • G06F21/52Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems during program execution, e.g. stack integrity ; Preventing unwanted data erasure; Buffer overflow
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/73Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/74Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information operating in dual or compartmented mode, i.e. at least one secure mode
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/07Indexing scheme relating to G06F21/10, protecting distributed programs or content
    • G06F2221/0757Licence
    • G06F2221/0773Recurrent authorisation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00Data processing: database and file management or data structures
    • Y10S707/99931Database or file accessing
    • Y10S707/99939Privileged access

Abstract

Dynamic assignment of rights to content, such as in a closed distribution system. Noting state information generated by an item of current content, and modifying state or rights of new content in response. Preloading or dynamically sending new content to the owner of the current content, with rights being enabled only at a later time, in the playback device, with predetermined conditions. In response to current state information, dynamically sending a license for new content from a server. Conditional or dynamic licenses to new content, including a set of rights associated with a class of possible sets of state information. Assignment of limited rights to a content, with support in a secure player to enforce them; for purposes of rental, bonus content, trials and other business models.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a Divisional of U.S. patent application Ser. No. 11/203,357 filed on Aug. 12, 2005, now U.S. Pat. No. 7,464,058, issued Dec. 9, 2008, which is a Divisional of co-pending U.S. patent application Ser. No. 10/703,149 filed on Nov. 5, 2003, which is a CIP of U.S. patent application Ser. No. 10/360,827, filed on Feb. 7, 2003, which are incorporated by reference in their entirety. This application also relates to Ser. No. 11/203,358 filed Aug. 12, 2005, which is incorporated by reference.
  • BACKGROUND OF THE APPLICATION
  • 1. Field of the Invention
  • The invention relates to assignment or modification of rights to content, such as for example in a closed-content distribution system, where those rights might be static or dynamic, and might be limited or permanent.
  • 2. Related Art
  • Closed-content distribution systems include end-to-end systems, including publishing servers, content distribution servers and playback devices, where the content that is playable on playback devices can be controlled through appropriate security techniques, and those security techniques make it relatively difficult for any unauthorized third party to distribute content that would be playable on the playback devices. In some closed-content distribution systems, it might be possible to distribute unauthorized content, but the playback devices are restricted to only use that content subject to rights granted by authorized licenses. In such systems, security techniques might be applied to make it relatively difficult for any unauthorized third party to distribute licenses granting rights to use that content.
  • In known computing systems, rights to use current content (even when the content itself has already been delivered) are made substantially impossible to modify, with the effect that additions or upgrades to those rights that current content involve either replacing that current content with new content, or distributing licenses including rights to that new content, and possibly techniques for revoking outdated licenses. Distributing such new licenses might involve substantial resources, including communication with a license server or computation by that license server to determine whether a license with new rights should be granted. It would be advantageous to be able to dynamically change the interpretation of licenses already available to the playback device, with the effect that those rights can be conditionally modified, even at a time well after the license was delivered to the user.
  • For one example, not intended to be limiting in any way, it would be advantageous to provide additional or upgraded game programs, or to provide new game programs, or to provide rights to use such additional or upgraded or new game programs, as an incentive to frequent or successful play of the current content. Other examples, also not intended to be limiting in any way, include cases where it is advantageous to provide additional or upgraded game programs, to provide new game programs, to provide rights to use such additional or upgraded or new game programs, or to provide other benefits, contingent on circumstances testable at the game device, or relatively local thereto, such as for example game state information when that state information is recorded by the current content. This would have the effect that rights to use current content could be effectively altered, modified, or otherwise added to, or even deleted or degraded in capability, without any code changes or media changes to that current content, and possibly without any intervention by a license server or similar device.
  • In known computing systems, if the current content maintains state information on externally modifiable storage, that state information might be altered or appended to by another program or individual, with the effect that a player might be able to deceive the current content (such as for example a game program). While it is possible for the current content to encrypt or digitally sign that state information, it often occurs that the current content was not created with this capability in mind, with the effect that providing this capability would involve adding to or modifying that current content. As noted in the incorporated disclosure (as further described below), it is often not desirable to redesign or re-author the current content to provide this capability.
  • In some known systems, a game device does record a set of state information, such as for example a high score or a set of users who have achieved high scores, for the purpose of creating ranking lists and for the purpose of providing an initiative to the users to achieve rankings. In some such systems, the game device might allow the user to continue play for a duration of time, or might allow the user access to selected new portions of the game, in response to whether that user has achieved a specific objective. However, in such systems, there is no substantial provision for the game device to dynamically modify rights to content (except for such extensions) or to dynamically provide rights to additional or upgraded or new content, across multiple sessions or using saved state information.
  • Accordingly, it would be advantageous to provide techniques with the effect that state information can be maintained on externally modifiable storage without the risk of a player being able to deceive the current content, and with the effect that rights can be dynamically altered to provide new or modified rights, in response to saved state information. In a closed-content distribution system, it would further be advantageous to provide techniques with the effect that a secondary program can use that game state information. That secondary program might be located logically relatively local to a secure processor used with the closed-content distribution system, or logically relatively distant from the secure processor. In a closed-content distribution system, it would further be advantageous to provide techniques with the effect that licenses can be dynamically reinterpreted (whether to add, modify, or remove rights) in response to that saved game state information.
  • Even in systems where rights might be static or dynamic, there is further advantage in being able to restrict the nature of the rights granted by the license. For one example, not intended to be limited in any way, at least one particular set of cases exists where it would be advantageous to make the rights granted by the license be limited in time, such as for example (1) by the amount of time the user is allowed to play the game, (2) by the number of times the user is allowed to play the game, or (3) by the duration of time during which the user is allowed to play the game. While these specific cases might be regarded as a special case of dynamic rights (that is, where the rights are dynamic in the sense that they are conditional on a measure of time), there is particular advantage to providing such limited rights, such as for example for testing, “free trials,” and rentals of application programs or games.
  • Accordingly, it would be advantageous to provide a technique involving either static or dynamic assignment of rights to content, and either limited or unlimited rights to content, such as for example in a closed distribution system.
  • SUMMARY
  • The invention provides methods and systems capable of assignment or modification of rights to content, such as for example in a closed-content distribution system, where those rights might be static or dynamic, and might be limited or permanent. For a first example, not intended to be limiting in any way, the invention provides methods and systems capable of either static interpretation or dynamic reinterpretation or updating of licenses to provide new or modified rights to content, and either static assignment or dynamic assignment of rights to content, such as for example in a closed distribution system. For a second example, not intended to be limiting in any way, the invention provides methods and systems capable of either limited assignment or unlimited assignment of rights to content, such as for example limited rights that are governed by time limitations or otherwise limited for a marketing purpose, and such as for example unlimited rights, such as for example might be traditionally conferred by purchase of permanent license for content.
  • In a first aspect, the invention provides methods and systems capable of noting state information generated by an item of current content, and capable of providing new rights to content or new content (with the effect of adding to or updating the current content) in response thereto. In one embodiment, electronic or physical media might dynamically send new rights to content or new content to the owner of the current content, or that new content might be pre-loaded and available at the recipient device in response to new rights to that content. In response to the state information generated by an item of current content, the license server might dynamically send a license to the new content, either in response to a selected actual value of that state information or in response to a selected changed value therein.
  • In a second aspect, the invention provides methods and systems including conditional or dynamic licenses to new content. In one embodiment, a conditional license to new content includes a set of rights to content, those rights being associated with a class of possible sets of state information generated by an item of current content. For a first example, not intended to be limiting in any way, the user might obtain a set of current content C, a set of new content N, and a conditional license L, where the conditional license L provides:
  • License for C

  • IF (always) THEN (rights to use C)
  • License for N

  • IF (on state information including S) THEN (rights to use N)
  • In this example, the “state information including S” is emitted or otherwise generated by C and the “rights to use N” are, but need not be, in addition to the already extant rights to use C.
  • Similarly, for a second example, not intended to be limiting in any way, the user might obtain a set of current content C, a set of new content N, and a dynamic license L, where the dynamic license L provides:
  • Limited License for C

  • IF (time t<t0) THEN (rights to use C)
  • Conditional License for N

  • IF ((on state information including S) or (time t>t0)) THEN (rights to use N)
  • Similarly, in this example, the “state information including S” is emitted or otherwise generated by C and the “rights to use N” are, but need not be, instead of the already rights to use C (those rights to use C expire at t=t0),
  • In these aspects of the invention, a “license” or other content rights, associated with selected content, might be represented by a data structure maintained in storage. The storage might be secure storage (such as for example included with a secure hardware device, such as a chip) or might be otherwise non-secure storage (such as for example RAM or disk storage), but digitally signed or encrypted by a security system, with the effect that the license or other content rights cannot be easily modified or read without approval by the security system. The content rights might be dynamically updated themselves, with the approval of the security system, or might represent a dynamic determination of content rights, as described above, such as in an “IF-THEN” format, where the “IF” part represents a conditional trigger for additional or modified rights, and where the “THEN” part represents the additional or modified rights. This has the effect that content rights are effectively a function of the state of a selected content element, such as for example a game score, a time played, or other value. The security system prevents any changes to the state of the selected content element, with the effect that cheating on the original game is prevented.
  • In a third aspect, the invention provides methods and systems including limited assignment of rights to content, such as for example limited rights that are governed by time limitations or otherwise limited for a marketing purpose. For some examples, the rights might be limited by the amount of time the user is allowed to play the game, as measured by actual time of execution of the game by the secure processor, as measured by the number of times the user is starts the game as recorded by the secure processor, or by the duration of time during which the user is allowed to play the game as measured by the secure processor. These particular limited sets of rights have the advantage of being well suited to games testing, “free trials,” and rentals of application programs or games. The invention also provides methods and systems including unlimited assignment of rights to content, such as for example might be traditionally conferred by purchase of underlying media including unencrypted content.
  • In a first embodiment, a dynamic license or a set of dynamic content rights might be represented within a data structure including a set of instructions (such as for example a set of machine code instructions, a pointer to a set of machine code instructions, a set of scripting language instructions, a pointer to a set of scripting language instructions, or other representation of the conditional “IF-THEN” nature of the dynamic rights). When the rights are to be reviewed to determine if the user has dynamic rights, the instructions are parsed (if necessary) and performed (either by execution, interpretation, emulation, or otherwise) by a secure processor. Any other techniques that are responsive to the state of selected content, and provide a descriptor of a set of enforceable rights, would be within the scope and spirit of the invention. After reading this application, those of ordinary skill in the art would recognize that these other techniques would be workable, and would not require either undue experimentation or further invention.
  • In a second embodiment, a dynamic license or a set of dynamic content rights might be represented by allowing an issuer of that dynamic license to read the state of the selected content, and to dynamically issue a license in response to that state. This has the effect that the issuer of the dynamic license would be allowed to read that state, and would be allowed to determine in real time whether or not to issue an appropriate license. One advantage of this second embodiment is that the playback device need not implement any such dynamic assignment rules in advance, and that the issuer of the dynamic license would be able to change its dynamic rules for issuing a license at an appropriate time. For example the issuer of the dynamic license need not revoke the earlier dynamic license or issue a new dynamic license, and need not tell the playback device what the issuers' intended rules are for issuing the dynamic license.
  • In one embodiment, a dynamic license or a set of dynamic content rights might be represented by allowing a set of security software to dynamically alter interpretation of a license, or the rights granted therein, under control and supervision of a secure processor.
  • For a first example, not intended to be limiting in any way, a first content element C1 might emit a state S, with the effect of altering or modifying rights to the content C2 such that its conditions to launch are met and it can be executed.
  • For a second example, not intended to be limiting in any way, a first content element C1 might provide an incentive for a user to execute a second content element C2, by providing that second content element C2 with the ability to alter or modify the state of the content C1 (such as for example by adding bonus points to the score for C1, or otherwise marking as achieved a goal within the context of C1). This second example is not necessarily preferred.
  • After reading this application, those skilled in the art would recognize that the techniques described herein provide an enabling technology, with the effect that heretofore advantageous features can be provided that heretofore were substantially infeasible.
  • For example, not intended to be limiting in any way, the techniques described herein provide that contests or games might be conducted, with the effect that one or more winners (as determined, for example, in response to relative scores or relative times taken) of the contest or game would receive an appropriate prize, such as for example: a bonus game, a set of bonus “levels” or other modules for a game, a cash prize, a credit toward purchase of a new or upgraded game, and the like. In various embodiments, the contest or game might include one winner, or more than one winner, or one or more winners of more than one class of winners, and the like. In various embodiments, the contest or game might include a team of players whose joint score is responsive to the individual scores of the team members, such as a sum or median of those scores or a maximum one or more of those scores. In various embodiments, the original game, the bonus game, or both, might include provisions for individual play, for joint play, or for cooperative play. For example, not intended to be limiting in any way, an entity not associated with the original author or distributor of the game might provide a contest (either with or without entry requirements), in which superior play of the original game is rewarded with an update to that game, or with an update to rights to use that game. The update might or might not be created by the original author or distributor of the game, the entity conducting the contest, or otherwise. (However, after reading this application, those skilled in the art would recognize that the nature of the closed-content distribution system would generally prevent external entities from providing authentic updates to content elements.)
  • For example, not intended to be limiting in any way, the techniques described herein provide that games already available to the user in the closed system might appear to be upgraded, such as by alteration or emendation, without any particular requirement of rewriting code for the original game, or for having access to that original code. In various embodiments, the game might be upgraded by providing a new program that checks the state of the old game, and makes changes in the behavior of the old game, either by directly interacting with the user, or by altering the state information of the old game (with the intercession of the security system), or some combination or conjunction thereof.
  • For example, not intended to be limiting in any way, the techniques described herein provide that educational software might be altered or emended to provide for an appropriate prize or reward for successful learning such as for example: a right to play a game program (either generically or limited to a selected period of time), a right to play bonus “levels” or other modules for a game, a cash prize, a credit toward purchase of a new or upgraded game, a next or another educational program “level” or other module for the educational program, a credit toward purchase of a new educational program. and the like.
  • For example, not intended to be limiting in any way, the techniques described herein provide that educational software might have the ability to, in response to completion of a first educational program or in response to achievement of a selected level of achievement (such as a successful grade on a test), provide access to a second educational program or test material (or to a next level of the same educational program or test material).
  • For example, not intended to be limiting in any way, the techniques described herein provide for security checks before accessing critical or otherwise sensitive data, such as for example confidential business information, confidential personal information, confidential financial information, program code, trade secrets, and the like.
  • For example, not intended to be limiting in any way, the techniques described herein provide for a chain (whether sequential or organized as a directed graph, with either conditional or unconditional transfers at each edge of that directed graph) events for the system to watch for, and in response thereto, take action on. For example, reaching a selected state in a first game program might provide the user with the right to play a second game, reaching a selected state in the second game program might provide the user with the right to play a third game, and the like. After reading this application, those skilled in the art would recognize that such a chain might form a complex logical structure, such as a tree structure, a directed acyclic graph, or a directed graph including at least one closed loop.
  • For example, not intended to be limiting in any way, the techniques described herein provide for limited assignment of rights to content, such as for example limited rights that are governed by time limitations or otherwise limited for a marketing purpose. For some examples, the rights might be limited by the amount of time the user is allowed to play the game, by the number of times the user is allowed to play the game, or by the duration of time during which the user is allowed to play the game. These particular limited sets of rights have the advantage of being well suited to games testing, “free trials,” and rentals of application programs or games.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a block diagram of a system including dynamic assignment of rights to content in a closed distribution system.
  • FIGS. 2 a and 2 b show a process flow diagram of a method of operating the system including dynamic assignment of rights to content in a closed distribution system.
  • DETAILED DESCRIPTION
  • In the description herein, a preferred embodiment of the invention is described, including preferred process steps and data structures. Those skilled in the art would realize, after perusal of this application, that embodiments of the invention might be implemented using a variety of other techniques not specifically described, without undue experimentation or further invention, and that such other techniques would be within the scope and spirit of the invention.
  • Lexicography
  • The following terms relate or refer to aspects of the invention or its embodiments. The general meaning of each of these terms is intended to be illustrative and in no way limiting.
  • The phrases “content server” or “content distribution server” generally describe, in the distribution system, any device capable of delivering content (either directly or indirectly), to a secure processor or secure playback device, using any form of transport technique. As described below, the content distribution server needs only a single copy of each content element, and might deliver multiple individualized copies of that content element in response to distinct users or in response to distinct requests. The concept of a content server is broad, and includes not only a server having content stored thereon, but also devices by which content might be dynamically created, such as a television camera, video camera, webcam, any reasonable generalization thereof, and the like. The content server may include a secure device capable of generating a secure hash and securely signing any information distributed from the server.
  • The phrase “license server” generally describes, in the distribution system, any device capable of delivering licenses for content. As described below, the license server includes in the license it emits at least (1) a decryption key for the content, that decryption key being encrypted by a private key for the specific playback device, and (2) a digital signature or secure hash value that can be used to verify authenticity of the license, and optionally, (3) a digital signature or secure hash value that can be used to verify authenticity of the content. In one embodiment the license server includes an online transaction server capable of requesting an identity of the device requesting the license and capable of creating, in response, a cryptographically signed data structure containing information specifying a device identity, a content identity and a set of content decryption keys.
  • The phrases “secure processor” and “secure playback device” generally describe the devices on which the content will be executed or interpreted (for code or instructions) or by which the content will be displayed or presented (for media content). As described below, the secure processor is relatively secure against tampering, and includes at least a UID (unique identifier) or a known encryption key (such as for example a private key in a public-key cryptosystem), with the effect that other elements of the system are capable of communicating privately and securely with the secure processor. The concept of a secure processor is broad, and includes any general purpose or special purpose computing device for which there is at least some secure memory, secured against inspection or intrusion from outside the secure processor, and for which there is at least some executive control capable of preventing application software from disclosing the contents of that secure memory. In one embodiment, the secure processor has built in security software that cannot readily be circumvented, or other techniques to securely bootstrap the loading of such security software from insecure devices, such as for example external mass storage. In such embodiments, the secure playback device can include a playback device capable of presenting information, under control of the secure processor, to a user, such as for example a game-player or student.
  • The term “content” or the phrase “content element” generally describe an application program (such as for example a game program) or a set of media content (such as for example an animation clip or a video clip) to be executed or interpreted (for code or instructions) or to be displayed or presented (for media content). As described below, the content might include application software, audio/video presentations databases, educational programs, games or educational games, multimedia content, teaching materials, reasonable combinations or generations thereof, and the like,
  • The phrases “content state” or “state of the content element” generally describe a set of information generated in response to a state of the content, such as for example related to the state of progress through a game, such as for example a data structure including values the content saves in persistent storage, either for deliberate publication to possible readers thereof, or to record for itself its own state for later recovery if need be. As described below, the content state might represent progress of a player in a game, such as a score value or a time taken value. The secure processor might (1) encrypt the content state, with the effect that it can only be read by authorized readers, (2) digitally sign the content state, with the effect that it cannot be altered without detection by the content element, or (3) both, with the effect that the content state might be maintained on persistent storage outside the secure processor.
  • The term “license” generally describes information sufficient for the secure playback device use the content subject to the rights granted by the license, and possibly to authenticate the content. In one embodiment, each license includes a data structure associated with one or more content elements, and including, in one embodiment, (1) an encrypted key for that content, with the effect that the secure processor can access the content if it has access to the license, and (2) a digital signature or secure hash value, with the effect that the license cannot be easily altered and remain effective. As described below, the license also includes a description of those rights the license grants to the licensee with regard to the content. In one embodiment, licenses are individually tailored to each individual authorized recipient or user, and to each individual secure playback device for which that recipient or user is authorized, although in the context of the invention there is no such particular requirement.
  • The term “rights” and the phrases “content rights” or “rights to the content” generally describe what actions the secure processor is allowed to take with regard to the content. For some examples, not intended to be limiting in any way, the rights might include a number of times the secure processor is allowed to execute the content, an amount of total running time the secure processor is allowed to execute the content, an amount of wall-clock time the secure processor is allowed to execute the content, and the like. As described below, the secure processor prevents any use of the content outside those specified by the content rights. As described below, rights might be “static” or “dynamic,” and might be “limited” or “unlimited.”
  • The terms “static” and “dynamic,” in the context of rights granted (by a license) to content, generally describe whether the rights are unconditional or static (in the sense that they do not change in response to the state of an application program or state of a game) or whether the rights are conditional or dynamic (in the sense that they might be altered, added to, or subtracted from, in response to the state of an application program or state of a game).
  • The terms “limited” and “unlimited,” in the context of rights granted (by a license) to content, generally describe whether the rights are limited in one or more selected ways, such as for example time limited or play limited, or whether the rights are substantially unlimited, such as for example in the case of a traditional purchase of a permanent license for a game for that specific user or for that specific playback device.
  • The scope and spirit of the invention is not limited to any of these definitions, or to specific examples mentioned therein, but is intended to include the most general concepts embodied by these and other terms.
  • System Elements
  • FIG. 1 shows a block diagram of a system including dynamic assignment of rights to content in a closed distribution system.
  • A system 100 includes a content server 110, a secure playback device 130, a license server 140, and a communication system 150.
  • The content server 110 includes any device or system capable of delivering content 112 to the secure playback device 130, directly or indirectly. In one embodiment, the content server 110 might include a server device capable of receiving requests for content 112 from the secure playback device 130, and responding to those requests by sending content 112 using the communication system 150. However, in the context of the invention, there is no particular requirement that the content server 110 receives explicit requests for content 112 from the secure playback device 130. For example, not intended to be limiting in any way, the content server 110 might deliver the content package 111 including content 112 to the secure playback device 130, in accordance with request for a subscription to that content 112, a request from a device other than the secure playback device 130, an original request from the secure playback device 130 or another device for the content 112 and any updates thereto, reasonable generalizations thereof, and the like.
  • In the context of the invention, it is possible that the secure playback device 130 can have access to the content 112 without being able to use that content 112, such as for example if a license 142 (as further described below) is required to authenticate or decrypt the content 112. In one embodiment, the secure playback device 130 might receive many elements of content 112, but not receive licenses 142 until a user presents proof of purchase of such a license 142. In the latter event, the secure playback device 130 would obtain a license 142 from the license server 140, either directly in response to the proof of purchase, or indirectly by the user entering information from the license 142, obtained from the license server in response to the proof of purchase.
  • The license server 140 includes any device or system capable of delivering a license 142 to the secure playback device 130, directly or indirectly. In one embodiment, the license server 140 might include a device similar to the content server 110. However, in the context of the invention, there is no particular requirement that content server 110 and the license server 140 operate in the same or a similar manner. For example, not intended to be limiting in any way, the content server 110 might deliver the content 112 in a first manner, while the license server 140 delivers the license 142 in a second manner.
  • After reading this application, those skilled in the art will recognize that in the context of the invention, there is no particular requirement that the content 112 or the license 142 be embodied in any particular format. For a first example, not intended to be limiting in any way, any one of these elements might be represented by one or more messages in an underlying communication transport protocol. For a second example, not intended to be limiting in any way, any one of these elements might be represented by inclusion or incorporation into a set of messages for collectively transporting multiple such elements. Those skilled in the art would recognize, after perusal of this application, that in the context of the invention, there is no particular requirement that the transport protocol need be either of these specific protocols, but might include other and further protocols, combinations of transport techniques, or significant variants thereof.
  • The communication system 150 includes any device or system, or technique, capable of delivering information (such as for example the content package 111) among the elements of the system 100. In one embodiment, the communication system 150 includes a communication network, such as for example an Internet, intranet, extranet, VPN, LAN, WAN, enterprise network, private or public switched network, or broadcasting system, capable of electronic communication of the content package 111 including the content 112. However, in the context of the invention, there is no particular requirement that the communication system 150 operates electronically, either in whole or in part. For example, not intended to be limiting in any way, the communication system 150 might include (at least in part) transport of physical media on which the content package 111 including the content 112 is encoded, such as for example a CD-ROM, rewritable CD, DVD, floppy disk, detachable hard disk drive, magnetic tape, paper tape, bar-coded package, or any other media capable of being sensed and interpreted by the secure playback device 130.
  • The secure playback device 130 includes a computing device capable of performing the tasks described herein, including receiving the content 112 directly or indirectly from the content server 110, and receiving the license 142 directly or indirectly from the license server 140. In one embodiment, the secure playback device 130 includes a secure processor including a secure state and a monitored state as described in the incorporated disclosure, optionally augmented using at least one auxiliary device 131 and external storage 132, and with an application program such as a game program running in the monitored state. In one embodiment, the external storage 132 might include RAM (random access memory), mass storage devices (such as for example magnetic or optical disk drives), a removable storage device (such as for example a flash memory or PC card including a disk drive), or some combination thereof.
  • In one embodiment, the application program (such as a game program running in the monitored state) has a process operating on the secure processor, that process having access to the state of the game, and capable of performing actions to alter the state of the game. In such embodiments, the state of the game can be maintained in the external storage 132. The state of the game might then be copied for use by a second device, or sent to that second device, either physically such as by moving the media on which the external storage 132 is embodied, or electronically such as by communication over a network.
  • As described above, in a first embodiment, a dynamic license or a set of dynamic content rights might be represented within a data structure. The data structure might be maintained within the secure playback device 130 or in the external storage 132, with the effect that a secure processor associated with the secure playback device 130 is capable of parsing and enforcing those dynamic content rights.
  • As described above, in a second embodiment, a dynamic license or a set of dynamic content rights might be represented by allowing an issuer of that dynamic license to read the state of the selected content, and to dynamically alter or issue a license 142 in response to that state. The issuer of the dynamic license would be allowed to obtain the state of the game from the external storage 132, and to dynamically alter or issue a license 142 for an element of content 112.
  • As described above, in a third embodiment, an element of content 112, under control and supervision of a secure processor associated with the secure playback device 130, can modify the state of the game by writing to the external storage 132. In such embodiments, either in combination with the first embodiment or the second embodiment described above, the element of content 112 can have the effect of providing a dynamic license or a set of dynamic content rights.
  • For a first example, not intended to be limiting in any way, a first content element C1 might emit a state S with the effect of altering or modifying rights to the content C2 such that its conditions for launch are execution are met as a result of state S.
  • For a second example, not intended to be limiting in any way, a first content element C1 might provide an incentive for a user to execute a second content element C2, by providing that second content element C2 with the ability to alter or modify the state of the content C1 (such as for example by adding bonus points to the score for C1, or otherwise marking as achieved a goal within the context of C1). This second example is not necessarily preferred.
  • In each of these described embodiments, this has the effect that a dynamic license or a set of dynamic content rights can provide the user with rights to a second element of content 112, in response to the state of the game for a first element of content 112. After reading this application, those skilled in the art would recognize that this is similar to a directed graph, where nodes of the direct graph represent sets of content rights and edges of the directed graph represent dynamic changes to those sets of content rights.
  • The state of the game might be in response to a result from an individual user, such as for example a raw score, a timed score, or some combination thereof. The state of the game might also or alternatively be in response to an aggregate result, such as for example a total, a maximum or minimum of some calculated value, or some combination thereof. The aggregate might be applied to a set of results from an individual user, or to a set of results from more than one such user.
  • The dynamic license or set of dynamic content rights (that is, in response to the state of the game) might include on or more of the following:
  • gaining/losing rights to other games or to extensions of the same game;
  • gaining/losing some other valuable thing, such as real money, game money, or entrance into a contest or club relating to the game;
  • reporting the state of the game to a remote device, either in response to an individual user or in response to an aggregate of a set of users, such as for example to determine a high score, a contest winner, or possible inappropriate activity (such as for example cheating at the game);
  • conducting a commercial transaction with a user, such as for example selling the user another element of content 112 (such as for example a game, or such as for example an extension of the same game).
  • The dynamic license or set of dynamic content rights (that is, in response to the state of the game) might be completely detached from any aspect of the game itself. The game only has control of what state it reports, not what is done with that information. This has the effect that the dynamic license or set of dynamic content rights might include one or more of the following:
  • New content 112 N might obtain rights that new content 112 N otherwise did not have, in response to the state of original content 112 C, such as for example rights for the new content 112 N to be initiated, launched, or started.
  • After reading this application, those skilled in the art will recognize that in the context of the invention, there is no particular requirement that the content server 110 and the license server 140 actually be separate devices. For one example, not intended to be limiting in any way, the content server 110 and the license server 140 might be co-hosted at the same device, which device would serve both the function of the content server 110 and the function of the license server 140. After reading this application, those skilled in the art will recognize that other and further variants of these ideas are within the scope and spirit of the invention, and would be workable without undue experimentation or further invention.
  • License Elements (Static or Dynamic)
  • Each license 142 includes a data structure that might represent a static or “unconditional” license, that is, a license that does not depend on any state of the content, or a dynamic or “conditional” license, that is, a license that might be responsive to the state of the content, with the effect of providing distinct rights in response to distinct states. In one embodiment, a conditional license includes a data structure including an “IF-THEN,” construct including (1) an “IF” condition which when satisfied releases the rights described in the “THEN” portion, and (2) a “THEN” portion, which describes a set of rights conditional on the “IF” portion. This has the effect that the rights described in the “THEN” portion are conditional on whether the triggering conditions described in the “IF” portion have occurred.
  • A first choice of alternative embodiments includes whether the “IF” condition is to be evaluated substantially locally (that is, at the secure processor 130) or whether the “IF” condition is to be evaluated substantially remotely (that is, at one or more license servers 140). Although each possibility is described separately herein, after reading this application those skilled in the art would recognize that combinations of these alternatives would be workable, arc within the scope and spirit of the invention, and would not require undue experimentation or further invention.
  • In cases where the “IF” condition is evaluated substantially locally. the “IF” condition might include a description of one or more content elements to which the conditional license is responsive. Similarly, in such cases, the “IF” condition might include a set of instructions capable of being executed (such as for example machine code) or interpreted (such as for example a scripting language) by the secure processor 130, or another processor with access to the state of the content, a result of those instructions providing a yes/no answer to whether the “IF” condition is satisfied. In one embodiment, an “IF” condition might be a function of a saved state of a game, during or after execution, digitally signed using a cryptographically-strong cipher.
  • After reading this application, those skilled in the art would recognize that such “IF” and “THEN” conditions might themselves be global in nature, or might have their context restricted in response to specific content elements, to specific content states, to specific users, or otherwise in response to selected tests performable at times when those “IF” and “THEN” conditions are evaluated. Moreover, those skilled in the art would recognize that such “IF” and “THEN” conditions might have specific date, location, or time restrictions, or other restrictions such as the nature of the hardware or software (such as a software version number) of the secure processor or the playback device. Those skilled in the art would recognize that such possibilities arc within the scope and spirit of the invention, and could readily be implemented with reference to this application, without undue experimentation or further invention.
  • In cases where the “IF” condition is evaluated substantially remotely, the “IF” condition might include a description of one or more license servers 140 to which the conditional license is responsive. Similarly, in this second embodiment, the “IF” condition might include either a command or request or program entry point at a selected license server 140, to be called upon or invoked or requested, a result of which call or invocation or request providing a yes/no answer to whether the “IF” condition is satisfied.
  • A second choice of alternatives includes whether the “THEN” portion is to be maintained substantially locally (that is, stored at the secure processor 130) or whether the “THEN” portion is to be maintained substantially remotely (that is, generated by the license server 140). Although each possibility is described separately herein, after reading this application those skilled in the art would recognize that combinations of these alternatives would be workable, are within the scope and spirit of the invention, and would not require undue experimentation or further invention.
  • In cases where the “THEN” portion is maintained substantially locally, the “THEN” condition might include a description of a set of rights available to the user for the content whose license is being evaluated, in response to the “IF” condition is or was satisfied.
  • In cases where the “THEN” portion is maintained substantially remotely, the “THEN” portion might include a description of one or more license servers 140 at which the “THEN” portion was or will be generated. Similarly, in this second embodiment, the “THEN” portion might include either a command or request or program entry point at a selected license server 140, to be called upon or invoked or requested, a result of which call or invocation or request providing a description of a set of rights available to the user in response to whether the “IF” condition is or was satisfied.
  • After reading this application, those skilled in the art would recognize that conditional licenses might be coupled in series, with the effect that the “THEN” portion of a the “IF-THEN” data structure of a first conditional license might itself include a second conditional license, that is, a second “IF-THEN” data structure, with the effect that the second conditional license includes rights that are conditional upon the first conditional license, and upon further conditions.
  • Similarly, after reading this application, those skilled in the art would recognize that conditional licenses might be coupled in parallel with the effect that a license might include both an unconditional part (for which the user obtains those rights unconditionally) and a conditional part (for which the user obtains the associated rights only upon satisfaction of the stated condition.
  • This has the effect that, in one embodiment, new content 112 for which the user does not have a license 142 might be present at the secure processor 130, either by prearrangement or by dynamic delivery in response to the conditional license 142. In either such case, when that new content 112 is available at the secure processor 130, the secure processor 130 prevents access to the new content 112 until there is an effective set of rights available from a license 142. When a conditional license 142 is triggered, with the effect that the rights it describes (or obtains from a license server 140) allow access to the new content 112, the secure processor 130 then allows access to that new content 112.
  • The license 142 or the rights described by that license 142 might be represented by a data structure maintained in storage. The storage might be secure storage (such as for example included with the secure processor 130, such as a chip) or might be otherwise non-secure storage (such as for example RAM or disk storage), but digitally signed or encrypted by the secure processor 130 (or digitally signed or encrypted by the license server 140), with the effect that the license 142 or other content rights cannot be easily modified or read without approval by the secure processor 130. The rights conferred by the license 142 might be dynamically updated themselves, with the approval of the secure processor 130, or might represent a dynamic determination of rights by a license server 140, as described above.
  • In one embodiment, each license 142 maintained at the license server 140 includes an individual set of content 112 and an individual secure playback device 130, and is maintained in a digitally signed form, with the effect that the license 142 cannot easily be modified. In alternative embodiments, each license 142 might be specific to a designated set of secure playback devices 130, such as for example a set of secure playback devices 130 belonging to a common owner, located at a common place, or having a common configuration type. Each license 142 includes information sufficient to decrypt the content 112 and verify that that content 112 is authentic, and possibly other data regarding how the content is protected or how the secure playback device 130 is allowed to use the content 112. In one embodiment, each license 142 includes a recipient UID (unique identifier) for the secure playback device 130 to which it is directed. the content key 113 CK, one or more secure hash values SH, which the secure playback device 130 can use to verify the authenticity of the content 112, and a cryptographically secure signature identifying the source of the license 142.
  • This has the effect that rights to content 112 can be altered in response to a function of the state of a selected content element 112, such as for example a game score, a time played, or other value, such as another characteristic of player success in a game. The secure processor 130 prevents any changes to the state of the selected content element 112, with the effect that cheating on the original game to obtain rights for new content 112 is prevented. In cases where the content state is responsive to a characteristic player success in the game, the conditional rights have the effect of being a bonus or reward available to those players who reach that designated level of player success.
  • License Elements (Limited or Unlimited)
  • Each license 142 also might represent a “limited” license, that is, a license for which rights are limited in one or more selected ways, such as for example time-limited or play-limited, or an “unlimited” license, that is, a license for which rights are substantially unlimited, such as for example permanent rights to use a game, as might occur in the case of a traditional purchase of physical media including embedded content with permanent rights.
  • Limited licenses are limitations on rights as a function of actual time of execution, or number of launches of the game. These rights are securely enforced by the secure processor and are a function of that particular content. Thus, for some examples, a limited license might be limited by time (either time duration of play, time duration of when the content is available to the user, or otherwise), or might be limited by number of plays (either number of times the game is started, or otherwise). In these examples, operation of the game has an effect on whether the condition is satisfied for the license to allow the user rights. The operation of the game has an effect that would be similar across nearly all games, such as time played or number of times started.
  • In further examples, a limited license might provide a parameter which limits or prevents execution of the game, or a portion thereof, such as for example a parental control parameter. In such an example, the game might read the parental control parameter and present alternative gameplay scenarios to the user (such as refusing to allow access to “adult” content when the parental control parameter so specifies).
  • License Elements (Business Models)
  • The combination of static-or-dynamic and limited or unlimited allows the invention to provide methods and systems in which selected business models of behavior are followed. Some examples, not intended to be limiting in any way, are:
  • A combination of static and unlimited license parameters allows the invention to provide a rights-management scheme in which a license 142 to content 112 is purchased to obtain access to that content 112, and when that license 142 is purchased, the user has unlimited rights to use that content 112.
  • A combination of static and limited license parameters allows the invention to provide a rights-management scheme in which a license 142 to content 112 is time limited (such as for example a “free trial” for that content 112, or when purchased, such as for example rental of that content 112 for a limited duration of time) or play limited (also such as for example a “free trial” for that content 112, or when purchased, such as for example rental of that content 112 for a limited number of executions).
  • A combination of dynamic and unlimited license parameters allows the invention to provide a rights-management scheme in which a license 142 to content 112 is dynamically enabled in response, to a state of another game (such as for example a “bonus game” when the user reaches a selected achievement level in another game), and other concepts described herein.
  • A combination of dynamic and limited license parameters allows the invention to provide a rights-management scheme in which a license 142 to content 112 dynamically enables, in response to a state of the game, dynamically enables limited rights to another game, for example, a bonus trial, or dynamically limits execution of another game, for example, as in parental control, or dynamically limits execution of a game in which a license 142 to content 112 is limited to selected times of day.
  • Method of Operation
  • FIGS. 2 a and 2 b show a process flow diagram of a method of operating the system including dynamic assignment of rights to content in a closed distribution system.
  • Although described serially, the flow points and steps of the method 200 can be performed by separate elements in conjunction or in parallel, whether asynchronously or synchronously, in a pipelined manner, or otherwise. There is no particular requirement that the method 200 must be performed in the same order in which this description lists flow points or steps, except where explicitly so indicated.
  • Delivery of Conditional License
  • At a flow point 10A, the license server 140 is ready to deliver one or more conditional licenses 142 to one or more secure processors 130.
  • At a step 211, the license server 140 determines information for an individual conditional license 142 for a selected secure processor 130, including an “IF” condition and a “THEN” portion of a data structure for that conditional license 142.
  • As described above, the “IF” condition might be prepared to be executed substantially locally (that is, at the secure processor 130) or might be prepared to be executed substantially remotely (that is, at one or more license servers 140).
  • As described above, the “THEN” portion might be prepared to be maintained substantially locally (that is, stored at the secure processor 130) or might be prepared to be maintained substantially remotely (that is, generated at one or more license servers 140).
  • At a step 212, the license server 140 delivers the conditional license 142 to the secure processor 130. As part of this step, in one embodiment, the license server 110 delivers this information to the secure playback device 130 using a secure infrastructure overlaid on the communication system 150.
  • At a flow point 210B, the system 100 has delivered one or more conditional licenses 142 to one or more secure playback devices 130, and is now ready to perform another task.
  • Invoking Conditional Licenses
  • At a flow point 220A, the secure processor 130 is ready to use the content 112.
  • At a step 221, the secure processor 130 retrieves the content 112 from storage it maintains substantially locally. In one embodiment, the storage might be substantially local storage on which the secure processor 130 maintains the content 112, digitally signed and encrypted, with the effect that the content 112 is secure against prying and tampering.
  • At a step 222, the secure processor 130 determines if the user has a license 142 effective to permit the user to execute or present the content 112. If the user has a license 142 effective to permit the user to execute or present the content 112, the secure processor 130 allows that operation to proceed, and the method 200 continues with the flow point 220B. If the user has a conditional license 142 with a “THEN” portion effective to permit the user to execute or present the content 112, the method 200 proceeds with the next step.
  • At a step 223, the secure processor 130 determines if the “IF” condition for the conditional license 142 is satisfied.
  • As part of this step, if as described above, the “IF” condition is prepared to be executed substantially locally (that is, at the secure processor 130), the secure processor 130 proceeds to execute or interpret the “IF” condition and determine a yes/no answer regarding whether the “IF” condition for the conditional license 142 is satisfied.
  • As part of this step, if as described above, the “IF” condition is prepared to be executed substantially remotely (that is, at one or more license servers 140), the secure processor 130 proceeds to make the associated call or invocation or request of a designated license server 140, and retrieves from that license server 140 a yes/no answer regarding whether the “IF” condition for the conditional license 142 is satisfied.
  • If the “IF” condition is satisfied, the method 200 proceeds with the next step. If the “IF” condition is not satisfied, the secure processor 130 does not allow execution or presentation of the content 112 to proceed, and the method 200 continues with the flow point 220B.
  • At a step 224, the secure processor 130 determines what rights are granted by the “THEN” portion of the conditional license 142.
  • As part of this step, if as described above, the “THEN” portion is prepared to be maintained substantially locally (that is, stored at the secure processor 130), the secure processor 130 determines the rights granted by the “THEN” portion of the conditional license 142.
  • As part of this step, if as described above, the “THEN” portion is prepared to be maintained substantially remotely (that is, generated at one or more license servers 140), the secure processor 130 proceeds to make the associated call or invocation or request of a designated license server 140, and retrieves from that license server 140 a description of a set of rights granted by the “THEN” portion of the conditional license 142.
  • The method 200 proceeds with the step 222, at which the secure processor 130 examines the rights granted by the “THEN” portion of the conditional license 142. As described above, the rights might themselves be conditional. If so, it might occur that the method 200 performs the steps 222, 223 and 224 repeatedly until rights associated with all satisfied “IF” conditions have been examined.
  • The method 200 proceeds with the step 225, at which the secure processor 130 uses the content 112, and with step 226, at which the secure processor 130 records state.
  • At a flow point 220B, the secure processor 130 is ready to use the content 112. The secure processor 130 may then use the content 112 and record the state of that content 112 (not shown). As described above, the state might include a score, a high score, a time taken, a minimum time taken, or another data structure, such as for example some other measure of player success at a game. The method 200 is ready to proceed with another task.
  • Limited Game Execution
  • At a flow point 230A, the content server 110 is ready to perform limited execution of an item of content 112.
  • The secure processor 130 determines whether the limitation or execution is a time limitation or a limitation on the number of games.
  • In one embodiment, the playback device 130, within a secure sub portion thereof, such as for example the secure processor, includes hardware and software elements which in combination provide abilities to start a game (or other content 112), stop a game, and measure the amount of execution time of a game.
  • In one embodiment, the playback device 130, also within a secure sub portion thereof, such as for example the secure processor, includes hardware and software elements which in combination provide abilities to save and restore a limited execution rights of a game (or other content 112), and measure the a degree of consumption of the state of the game. For a first example, not intended to be limiting in any way, the playback device 130 might maintain the number of minutes of play for the specific content 112, identified for the specific content 112, in a secure memory (such as for example an internal flash memory within the secure sub-portion). For a second example, not intended to be limiting in any way, the playback device 130 might maintain that information in a memory external to the secure sub-portion, but digitally signed (and possibly encrypted) using a cryptographic technique, with the effect that the saved state of the game cannot be easily altered (and in some embodiments, cannot be easily read), by devices other than the playback device 130.
  • At step 232, a user of the playback device 130 requests a license 142, specific to the specific playback device 130, for a selected limited time duration.
  • At a step 233, the user presents an appropriate proof of purchase or other credit or entitlement to obtain the license 142.
  • At a step 234, the license server 140 issues a limited license 142, the limited license 142 including a description of the nature of the rights granted by that limited license 142. In one embodiment, the description of the nature of the rights is encoded using a protocol known to both the playback device 130 and to the license server 140.
  • At a step 235, the playback device 130 authenticates the license 142 using appropriate digital signature checking techniques, and prepares to initiate or launch the game (or other content 112).
  • At a step 236, the playback device 130 authenticates the description of the nature of the (limited) rights granted by the license 142 using appropriate digital signature checking techniques, and makes description available to the secure processor.
  • At a step 237, the playback device 130 retrieves the (saved) state of the consumption or the rights of the game (or other content 112). For example, it could retrieve the actual minutes of execution of the game.
  • At a step 238, the playback device 130 compares the limitations imposed by the license 142, such as for example a time limitation, with information regarding the amount of consumption of the content 112 from the saved state of consumption the game (or other content 112). If the amount of consumption exceeds the allowed limit, the game is not permitted to launch (for example, the launch is aborted).
  • At a step 239, the playback device 130 makes run-time comparisons from time to time regarding the limitations imposed by the license 142, such as for example a time limitation, with information regarding the amount of consumption of the content 112 from the saved state of the game (or other content 112). If, at any of these run-time comparisons, the amount of consumption exceeds the allowed limit, the game (or other content 112) is aborted or halted.
  • Run-time comparisons might be performed by one of at least two techniques. (A) In a first example technique, the game makes periodic secure program calls to a secure set of code embodied in the secure processor, and using a secure timer in the processor accumulates the time consumption of the content being executed, with the effect that the secure processor can determine when the amount of consumption exceeds the limit. (B) In a second example technique, the secure processor sets a secure timer interrupt from the game at the time of launch into a secure set of code embodied in the secure processor, similarly with the effect that the secure processor can determine when the amount of consumption exceeds the limit.
  • In cases where the limitation is a limitation on the number of games, the secure processor may operate in a similar manner. In such embodiments, instead of the secure processor comparing an amount of time used against a selected time limit, the secure processor would compare a number of times launched against a selected limit on the number of launches.
  • At a flow point 230B, the content server 110 has performed limited execution of an item of content 112.
  • Alternative Embodiments
  • Although preferred embodiments are disclosed herein, many variations are possible which remain within the concept, scope, and spirit of the invention. These variations would become clear to those skilled in the art after perusal of this application.
  • After reading this application, those skilled in the art would recognize that the techniques described herein provide an enabling technology, with the effect that heretofore advantageous features can be provided that heretofore were substantially infeasible.
  • For example, not intended to be limiting in any way, the techniques described herein provide that contests or games might be conducted, with the effect that one or more winners (as determined, for example, in response to relative scores or relative times taken) of the contest or game would receive an appropriate prize, such as for example: a bonus game, a set of bonus “levels” or other modules for a game, a cash prize, a credit toward purchase of a new or upgraded game, and the like. In various embodiments, the contest or game might include one winner, or more than one winner, or one or more winners of more than one class of winners, and the like. In various embodiments, the contest or game might include a team of players whose joint score is responsive to the individual scores of the team members, such as a sum or median of those scores or a maximum one or more of those scores. In various embodiments, the original game, the bonus game, or both, might include provisions for individual play, for joint play, or for cooperative play. For example, not intended to be limiting in any way, an entity not associated with the original author or distributor of the game might provide a contest (either with or without entry requirements), in which superior play of the original game is rewarded with an update to that game. The update might or might not be created by the original author or distributor of the game, the entity conducting the contest, or otherwise.
  • For example, not intended to be limiting in any way, the techniques described herein provide that games already available to the user in the closed system might be upgraded, such as by alteration or emendation, without any particular requirement of rewriting code for the original game, or for having access to that original code. In various embodiments, the game might be upgraded by providing a new program that checks the state of the old game, and makes changes in the behavior of the old game, either by directly interacting with the user, or by altering the state information of the old game (with the intercession of the security system), or some combination or conjunction thereof. For example, not intended to be limiting in any way, an entity not associated with the original author or distributor of the game might provide an updated, upgraded, modified, or otherwise different, version of the game, or a new “level” or other module for the game, without altering any of the original game code. The new game might be created in response to status information maintained or provided by the old game, or the new game might call upon aspects of the old game (with the intercession of the security system) to provide a new game that is either different from, or an enhanced version of, the old game.
  • For example, not intended to be limiting in any way, the techniques described herein provide that educational software might be altered or amended to provide for an appropriate prize or reward for successful learning, such as for example: a right to play a game program (either generically or limited to a selected period of time), a right to play bonus “levels” or other modules for a game, a cash prize, a credit toward purchase of a new or upgraded game, a next or another educational program “level” or other module for the educational program, a credit toward purchase of a new educational program, and the like.
  • For example, not intended to be limiting in any way, the techniques described herein provide for security checks before accessing critical or otherwise sensitive data, such as for example confidential business information, confidential personal information, confidential financial information, program code, trade secrets, and the like.
  • For example, not intended to be limiting in any way, the techniques described herein provide for a chain (whether sequential or organized as a directed graph, with either conditional or unconditional transfers at each edge of that directed graph) events for the system to watch for, and in response thereto, take action on. For example, reaching a selected state in a first game program might provide the user with the right to play a second game, reaching a selected state in the second game program might provide the user with the right to play a third game, and the like.
  • After reading this application, those skilled in the art will recognize these alternative embodiments and variations are illustrative and are intended to be in no way limiting.

Claims (12)

  1. 1. A system, including
    a client device including a secure processor:
    memory including a resident rule that specifies a condition associated with game save data for game content;
    a license server, coupled to the memory and the client device, configured to:
    receive a request to deliver a license to the client device for the game content;
    receive the game save data associated with the client device and the game content;
    generate a license in response to a positive evaluation of the condition using the game save data associated with the client device and the game content;
    wherein, in operation, the secure processor of the client device determines if the license is satisfied in accordance with static rules.
  2. 2. A system as in claim 1, wherein:
    the license includes a rule associated with further state of achievement in a game;
    in operation, the secure processor determines if the license is satisfied in accordance with the rule and the further state of achievement in the game, and permits further execution of the game if it is determined that the license is satisfied in accordance with the rule and the further state of achievement in the game.
  3. 3. A system as in claim 1, wherein, in operation, the license server evaluates the authenticity of the game save data by validating a signature generated in the client device, using a public key associated with the client device.
  4. 4. A method, comprising:
    receiving a request to generate a game content license for a client device;
    receiving cryptographically signed data representing a state of achievement in a game associated with the game content license;
    validating authenticity of the data using a signature associated with the cryptographically signed data;
    using a first rule to evaluate a condition based on the data and the request;
    generating, upon positive verification of the first rule, a game content license;
    sending the game content license to the client device.
  5. 5. The method of claim 4, further comprising:
    determining, using static rules at the client device, if the game content license is satisfied;
    executing, at the client device, game content associated with the game content license.
  6. 6. The method of claim 4, further comprising:
    including in the game content license a second rule associated with a further state of achievement of a game associated with the game content license;
    determining if the game content license is satisfied in accordance with the second rule and dynamic state of achievement;
    permitting further execution of the game if it is determined that the game content license is satisfied in accordance with the second rule and the further state of achievement.
  7. 7. A client device comprising:
    memory including game content and a game save data;
    a processor, coupled to said memory, for executing the game content;
    wherein, in operation, the client device:
    receives a license that specifies a condition associated with the game save data for the game content;
    executes the game content if the condition is satisfied.
  8. 8. The client device of claim 7, wherein the processor includes a secure processor.
  9. 9. The client device of claim 7, wherein the memory includes trusted software.
  10. 10. The client device of claim 7, wherein the game save data includes data selected from the group consisting of: player state, time, duration of play, number of times content has been executed, progress of play, assets, score, and a combination thereof.
  11. 11. The client device of claim 7, wherein the game save data includes cryptographically signed data.
  12. 12. The client device of claim 7 further comprising a further condition associated with a further game save data, wherein, in operation, the processor permits further execution of the game content if the further condition is satisfied.
US12330487 2003-02-07 2008-12-08 System and method for delivering licenses to a playback device Pending US20090150293A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10360827 US7322042B2 (en) 2003-02-07 2003-02-07 Secure and backward-compatible processor and secure software execution thereon
US10703149 US8131649B2 (en) 2003-02-07 2003-11-05 Static-or-dynamic and limited-or-unlimited content rights
US11203357 US7464058B2 (en) 2003-02-07 2005-08-12 System and method for generating new licenses
US12330487 US20090150293A1 (en) 2003-02-07 2008-12-08 System and method for delivering licenses to a playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12330487 US20090150293A1 (en) 2003-02-07 2008-12-08 System and method for delivering licenses to a playback device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11203357 Division US7464058B2 (en) 2003-02-07 2005-08-12 System and method for generating new licenses

Publications (1)

Publication Number Publication Date
US20090150293A1 true true US20090150293A1 (en) 2009-06-11

Family

ID=34573336

Family Applications (4)

Application Number Title Priority Date Filing Date
US10703149 Active 2025-12-19 US8131649B2 (en) 2003-02-07 2003-11-05 Static-or-dynamic and limited-or-unlimited content rights
US11203357 Active US7464058B2 (en) 2003-02-07 2005-08-12 System and method for generating new licenses
US11203358 Abandoned US20050273439A1 (en) 2003-02-07 2005-08-12 System and method for generating new licenses
US12330487 Pending US20090150293A1 (en) 2003-02-07 2008-12-08 System and method for delivering licenses to a playback device

Family Applications Before (3)

Application Number Title Priority Date Filing Date
US10703149 Active 2025-12-19 US8131649B2 (en) 2003-02-07 2003-11-05 Static-or-dynamic and limited-or-unlimited content rights
US11203357 Active US7464058B2 (en) 2003-02-07 2005-08-12 System and method for generating new licenses
US11203358 Abandoned US20050273439A1 (en) 2003-02-07 2005-08-12 System and method for generating new licenses

Country Status (5)

Country Link
US (4) US8131649B2 (en)
EP (1) EP1680761B1 (en)
JP (1) JP4875493B2 (en)
CN (1) CN1879112A (en)
WO (1) WO2005045644A3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080189348A1 (en) * 2007-02-05 2008-08-07 Broadcom Corporation Media Transport Protocol Extensions for System Integrity and Robustness, and Applications Thereof
US20080288788A1 (en) * 2007-05-16 2008-11-20 Broadcom Corporation Digital Rights Management Metafile, Management Protocol and Applications Thereof
US20090083429A1 (en) * 2007-05-16 2009-03-26 Broadcom Corporation Generic Digital Rights Management Framework, and Applications Thereof
US20100251389A1 (en) * 2009-03-26 2010-09-30 Brother Kogyo Kabushiki Kaisha License registration device that registers license for use of program on data processing device
US20100333212A1 (en) * 2009-06-25 2010-12-30 Microsoft Corporation Portable parameter-based licensing
US9646142B2 (en) 2003-02-07 2017-05-09 Acer Cloud Technology Inc. Ensuring authenticity in a closed content distribution system

Families Citing this family (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7885896B2 (en) 2002-07-09 2011-02-08 Avaya Inc. Method for authorizing a substitute software license server
US8041642B2 (en) 2002-07-10 2011-10-18 Avaya Inc. Predictive software license balancing
US7966520B2 (en) * 2002-08-30 2011-06-21 Avaya Inc. Software licensing for spare processors
US7698225B2 (en) * 2002-08-30 2010-04-13 Avaya Inc. License modes in call processing
US7707116B2 (en) * 2002-08-30 2010-04-27 Avaya Inc. Flexible license file feature controls
US7681245B2 (en) * 2002-08-30 2010-03-16 Avaya Inc. Remote feature activator feature extraction
US7757075B2 (en) * 2002-11-15 2010-07-13 Microsoft Corporation State reference
US7890997B2 (en) * 2002-12-26 2011-02-15 Avaya Inc. Remote feature activation authentication file system
US7779482B1 (en) * 2003-02-07 2010-08-17 iGware Inc Delivery of license information using a short messaging system protocol in a closed content distribution system
US8131649B2 (en) * 2003-02-07 2012-03-06 Igware, Inc. Static-or-dynamic and limited-or-unlimited content rights
US7260557B2 (en) * 2003-02-27 2007-08-21 Avaya Technology Corp. Method and apparatus for license distribution
US20070155469A1 (en) * 2003-10-20 2007-07-05 Sam Johnson Automatic funding of paragames on electronic gaming platform
US9564004B2 (en) 2003-10-20 2017-02-07 Igt Closed-loop system for providing additional event participation to electronic video game customers
US7747532B2 (en) * 2003-11-10 2010-06-29 Sony Corporation Content use management system, content playback apparatus, content use management method, content playback method, and computer program including system date/time information validation
CA2581270A1 (en) * 2004-06-22 2005-12-29 Ebooks Corporation Limited Lending system and method
US8968093B2 (en) * 2004-07-15 2015-03-03 Intel Corporation Dynamic insertion of personalized content in online game scenes
US7707405B1 (en) 2004-09-21 2010-04-27 Avaya Inc. Secure installation activation
US7747851B1 (en) * 2004-09-30 2010-06-29 Avaya Inc. Certificate distribution via license files
US8229858B1 (en) 2004-09-30 2012-07-24 Avaya Inc. Generation of enterprise-wide licenses in a customer environment
US9613491B2 (en) 2004-12-16 2017-04-04 Igt Video gaming device having a system and method for completing wagers and purchases during the cash out process
US20060258461A1 (en) * 2005-05-13 2006-11-16 Yahoo! Inc. Detecting interaction with an online service
US7587502B2 (en) * 2005-05-13 2009-09-08 Yahoo! Inc. Enabling rent/buy redirection in invitation to an online service
US20070026935A1 (en) * 2005-08-01 2007-02-01 Igt Methods and devices for managing gaming networks
US8152628B2 (en) 2005-08-01 2012-04-10 Igt Methods and devices for authentication and licensing in a gaming network
US7814023B1 (en) 2005-09-08 2010-10-12 Avaya Inc. Secure download manager
US7965922B2 (en) * 2005-09-16 2011-06-21 Sony Corporation Information processing device, information recording medium manufacturing device, information recording medium, methods thereof, and computer program
US20070073625A1 (en) * 2005-09-27 2007-03-29 Shelton Robert H System and method of licensing intellectual property assets
US7533061B1 (en) * 2006-01-18 2009-05-12 Loudeye Corp. Delivering media files to consumer devices
US20070206247A1 (en) * 2006-03-01 2007-09-06 Intouch Group, Inc. System, apparatus, and method for managing preloaded digital files for preview on a digital media playback apparatus
US10026255B2 (en) * 2006-04-13 2018-07-17 Igt Presentation of remotely-hosted and locally rendered content for gaming systems
US8968077B2 (en) * 2006-04-13 2015-03-03 Idt Methods and systems for interfacing with a third-party application
US8784196B2 (en) 2006-04-13 2014-07-22 Igt Remote content management and resource sharing on a gaming machine and method of implementing same
US8316081B2 (en) * 2006-04-13 2012-11-20 Domingo Enterprises, Llc Portable media player enabled to obtain previews of a user's media collection
US20070245376A1 (en) * 2006-04-13 2007-10-18 Concert Technology Corporation Portable media player enabled to obtain previews of media content
US8777737B2 (en) * 2006-04-13 2014-07-15 Igt Method and apparatus for integrating remotely-hosted and locally rendered content on a gaming device
US20070245378A1 (en) * 2006-04-13 2007-10-18 Concert Technology Corporation User system providing previews to an associated portable media player
US20090156303A1 (en) * 2006-11-10 2009-06-18 Igt Bonusing Architectures in a Gaming Environment
US20070245377A1 (en) * 2006-04-13 2007-10-18 Concert Technology Corporation Central system providing previews to a portable media player
US9028329B2 (en) 2006-04-13 2015-05-12 Igt Integrating remotely-hosted and locally rendered content on a gaming device
US7603434B2 (en) * 2006-04-13 2009-10-13 Domingo Enterprises, Llc Central system providing previews of a user's media collection to a portable media player
US20070244985A1 (en) * 2006-04-13 2007-10-18 Concert Technology Corporation User system providing previews of a user's media collection to an associated portable media player
US20100017501A1 (en) * 2006-05-02 2010-01-21 Broadon Communications Corp. Content management and method
US8676713B2 (en) * 2006-05-30 2014-03-18 Dell Products L.P. Dynamic constraints for content rights
US20080070688A1 (en) * 2006-09-20 2008-03-20 John Loehrer Real-time gaming system having scalable database
US8230037B2 (en) * 2006-09-29 2012-07-24 Audible, Inc. Methods and apparatus for customized content delivery
US7624276B2 (en) * 2006-10-16 2009-11-24 Broadon Communications Corp. Secure device authentication system and method
US7613915B2 (en) * 2006-11-09 2009-11-03 BroadOn Communications Corp Method for programming on-chip non-volatile memory in a secure processor, and a device so programmed
US8727855B2 (en) * 2006-11-13 2014-05-20 Igt Three-dimensional paylines for gaming machines
GB2446175B (en) * 2007-01-31 2011-06-29 Hewlett Packard Development Co Method of updating data
US7962751B2 (en) * 2007-02-26 2011-06-14 Arthur Frederick Dudley Method for portability of information between multiple servers
US8285646B2 (en) * 2007-03-19 2012-10-09 Igt Centralized licensing services
US8032472B2 (en) * 2007-04-04 2011-10-04 Tuen Solutions Limited Liability Company Intelligent agent for distributed services for mobile devices
US20080271165A1 (en) * 2007-04-27 2008-10-30 Microsoft Corporation Parameter-based interpretation of drm license policy
US8046838B1 (en) * 2007-04-30 2011-10-25 Hewlett-Packard Development Company, L.P. Using a modulation transfer function of a device to create digital content for the device
US7778986B2 (en) 2007-08-29 2010-08-17 International Business Machines Corporation Securing transfer of ownership of a storage object from an unavailable owner node to another node
US7991822B2 (en) 2007-08-29 2011-08-02 International Business Machines Corporation Propagation of updates for attributes of a storage object from an owner node of the storage object to other nodes
US7899895B2 (en) 2007-08-29 2011-03-01 International Business Machines Corporation Transfer of ownership of a storage object in response to an original owner node becoming available after a period of unavailability
CN101137092B (en) 2007-09-11 2012-07-04 中兴通讯股份有限公司 Mobile game issuing method
US20090204956A1 (en) * 2008-02-08 2009-08-13 International Business Machines Corporation Multiple-mode software license enforcement
US20090254482A1 (en) * 2008-04-07 2009-10-08 Microsoft Corporation Time-based licenses
US9700791B2 (en) * 2008-08-14 2017-07-11 Valve Corporation Overlaying interactive video game play with real-time chat sessions with game switching
US20100070416A1 (en) * 2008-09-18 2010-03-18 Microsoft Corporation Digital rights management license identification
US20100312810A1 (en) * 2009-06-09 2010-12-09 Christopher Horton Secure identification of music files
JP5020297B2 (en) * 2009-09-08 2012-09-05 株式会社ソニー・コンピュータエンタテインメント Program execution restricting device and a program execution restricting method
JP5454035B2 (en) 2009-09-15 2014-03-26 株式会社リコー The image processing apparatus, a remote management system, method license update, and license update
US20110191288A1 (en) * 2010-01-29 2011-08-04 Spears Joseph L Systems and Methods for Generation of Content Alternatives for Content Management Systems Using Globally Aggregated Data and Metadata
US20110191246A1 (en) * 2010-01-29 2011-08-04 Brandstetter Jeffrey D Systems and Methods Enabling Marketing and Distribution of Media Content by Content Creators and Content Providers
US20110191287A1 (en) * 2010-01-29 2011-08-04 Spears Joseph L Systems and Methods for Dynamic Generation of Multiple Content Alternatives for Content Management Systems
US20110191691A1 (en) * 2010-01-29 2011-08-04 Spears Joseph L Systems and Methods for Dynamic Generation and Management of Ancillary Media Content Alternatives in Content Management Systems
US20110191861A1 (en) * 2010-01-29 2011-08-04 Spears Joseph L Systems and Methods for Dynamic Management of Geo-Fenced and Geo-Targeted Media Content and Content Alternatives in Content Management Systems
US9197630B2 (en) * 2010-03-08 2015-11-24 Microsoft Technology Licensing, Llc Automated certificate management
JP5232197B2 (en) * 2010-06-30 2013-07-10 株式会社コナミデジタルエンタテインメント Game system, the server device, a game control method, service methods, game system program, and a program for the server
US9432746B2 (en) 2010-08-25 2016-08-30 Ipar, Llc Method and system for delivery of immersive content over communication networks
CN101976408A (en) * 2010-09-29 2011-02-16 中兴通讯股份有限公司 Widget as well as trial implementation method and terminal thereof
US8781304B2 (en) 2011-01-18 2014-07-15 Ipar, Llc System and method for augmenting rich media content using multiple content repositories
US9361624B2 (en) 2011-03-23 2016-06-07 Ipar, Llc Method and system for predicting association item affinities using second order user item associations
US8849819B2 (en) 2011-08-05 2014-09-30 Deacon Johnson System and method for controlling and organizing metadata associated with on-line content
US9524609B2 (en) 2011-09-30 2016-12-20 Igt Gaming system, gaming device and method for utilizing mobile devices at a gaming establishment
US9401065B2 (en) 2011-09-30 2016-07-26 Igt System and method for remote rendering of content on an electronic gaming machine
US20130129095A1 (en) * 2011-11-18 2013-05-23 Comcast Cable Communications, Llc Key Delivery
US9134969B2 (en) 2011-12-13 2015-09-15 Ipar, Llc Computer-implemented systems and methods for providing consistent application generation
US8627097B2 (en) 2012-03-27 2014-01-07 Igt System and method enabling parallel processing of hash functions using authentication checkpoint hashes
US9965760B2 (en) 2012-06-29 2018-05-08 Hurricane Electric Systems and methods for facilitating electronic transactions utilizing a mobile computing device
US8990956B2 (en) * 2012-08-06 2015-03-24 Hurricane Electric Systems and methods of exchanging information for a reward
US9129469B2 (en) 2012-09-11 2015-09-08 Igt Player driven game download to a gaming machine
CN103259709A (en) * 2013-05-27 2013-08-21 南京邮电大学 End-to-end mobile phone real-time video transmission method based on virtual private network
WO2015091206A1 (en) * 2013-12-16 2015-06-25 Abb Technology Ag Licensing of a hardware component
JP2015201104A (en) * 2014-04-09 2015-11-12 富士通株式会社 Terminal device, information management device, terminal program, information management program, and system
JP6372311B2 (en) * 2014-10-30 2018-08-15 株式会社リコー Information processing systems, electronic devices, service authorization method and program
US10055930B2 (en) 2015-08-11 2018-08-21 Igt Gaming system and method for placing and redeeming sports bets

Citations (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095798A (en) * 1989-01-10 1992-03-17 Nintendo Co. Ltd. Electronic gaming device with pseudo-stereophonic sound generating capabilities
US5184830A (en) * 1989-01-10 1993-02-09 Nintendo Company Limited Compact hand-held video game system
US5400402A (en) * 1993-06-07 1995-03-21 Garfinkle; Norton System for limiting use of down-loaded video-on-demand data
US5404505A (en) * 1991-11-01 1995-04-04 Finisar Corporation System for scheduling transmission of indexed and requested database tiers on demand at varying repetition rates
US5426763A (en) * 1989-04-20 1995-06-20 Nintendo Co., Ltd. Memory cartridge including a key detector for inhibiting memory access and preventing undesirable write operations
US5528513A (en) * 1993-11-04 1996-06-18 Digital Equipment Corp. Scheduling and admission control policy for a continuous media server
US5610839A (en) * 1994-10-07 1997-03-11 Itt Corporation Communications management system architecture
US5638443A (en) * 1994-11-23 1997-06-10 Xerox Corporation System for controlling the distribution and use of composite digital works
US5715398A (en) * 1989-06-16 1998-02-03 R.R. Donnelley & Sons Company System for distributing items from an origin to a plurality of destinations
US5715403A (en) * 1994-11-23 1998-02-03 Xerox Corporation System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar
US5765152A (en) * 1995-10-13 1998-06-09 Trustees Of Dartmouth College System and method for managing copyrighted electronic media
US5867223A (en) * 1995-07-17 1999-02-02 Gateway 2000, Inc. System for assigning multichannel audio signals to independent wireless audio output devices
US5892900A (en) * 1996-08-30 1999-04-06 Intertrust Technologies Corp. Systems and methods for secure transaction management and electronic rights protection
US5903723A (en) * 1995-12-21 1999-05-11 Intel Corporation Method and apparatus for transmitting electronic mail attachments with attachment references
US5905860A (en) * 1996-03-15 1999-05-18 Novell, Inc. Fault tolerant electronic licensing system
US5909491A (en) * 1996-11-06 1999-06-01 Nokia Mobile Phones Limited Method for sending a secure message in a telecommunications system
US5913039A (en) * 1996-01-19 1999-06-15 Matsushita Electric Industrial Co., Ltd. Video on demand system with a transmission schedule table in the video server including entries for client identifiers, video titles, and reproduction start times
US6014558A (en) * 1998-12-28 2000-01-11 Northern Telecom Limited Variable rate optional security measures method and apparatus for wireless communications network
US6016348A (en) * 1996-11-27 2000-01-18 Thomson Consumer Electronics, Inc. Decoding system and data format for processing and storing encrypted broadcast, cable or satellite video data
US6029046A (en) * 1994-12-01 2000-02-22 Scientific-Atlanta, Inc. Method and apparatus for a game delivery service including flash memory and a game back-up module
US6032200A (en) * 1996-09-30 2000-02-29 Apple Computer, Inc. Process scheduling for streaming data through scheduling of disk jobs and network jobs and the relationship of the scheduling between these types of jobs
US6038601A (en) * 1997-07-21 2000-03-14 Tibco, Inc. Method and apparatus for storing and delivering documents on the internet
US6044157A (en) * 1996-03-08 2000-03-28 Matsushita Electric Industrial Co., Ltd. Microprocessor suitable for reproducing AV data while protecting the AV data from illegal copy and image information processing system using the microprocessor
US6049821A (en) * 1997-01-24 2000-04-11 Motorola, Inc. Proxy host computer and method for accessing and retrieving information between a browser and a proxy
US6052720A (en) * 1998-05-14 2000-04-18 Sun Microsystems, Inc. Generic schema for storing configuration information on a server computer
US6185625B1 (en) * 1996-12-20 2001-02-06 Intel Corporation Scaling proxy server sending to the client a graphical user interface for establishing object encoding preferences after receiving the client's request for the object
US6195433B1 (en) * 1998-05-08 2001-02-27 Certicom Corp. Private key validity and validation
US6205475B1 (en) * 1997-02-26 2001-03-20 William Michael Pitts Request interceptor in network nodes for determining local storage of file image satisfying predetermined criteria
US6212657B1 (en) * 1996-08-08 2001-04-03 Nstreams Technologies, Inc. System and process for delivering digital data on demand
US6219708B1 (en) * 1996-05-30 2001-04-17 Multi-Tech Systems, Inc. System for network resource management
US6219680B1 (en) * 1997-06-19 2001-04-17 International Business Machines Corporation System and method for building a web site for use in E-commerce with user specific pricing
US6226618B1 (en) * 1998-08-13 2001-05-01 International Business Machines Corporation Electronic content delivery system
US6243719B1 (en) * 1997-10-20 2001-06-05 Fujitsu Limited Data caching apparatus, data caching method and medium recorded with data caching program in client/server distributed system
US20010014882A1 (en) * 1994-11-23 2001-08-16 Stefik Mark J. System for controlling the distribution and use of digital works using digital tickets
US6338050B1 (en) * 1998-11-16 2002-01-08 Trade Access, Inc. System and method for providing and updating user supplied context for a negotiations system
US20020016818A1 (en) * 2000-05-11 2002-02-07 Shekhar Kirani System and methodology for optimizing delivery of email attachments for disparate devices
US20020032784A1 (en) * 1998-03-25 2002-03-14 Community Learning And Information Network Computer architecture for managing courseware in a shared use operating environment
US6371854B1 (en) * 1999-08-20 2002-04-16 Ninetendo Co., Ltd. Combined game system
US6377972B1 (en) * 1999-01-19 2002-04-23 Lucent Technologies Inc. High quality streaming multimedia
US20020049909A1 (en) * 2000-03-08 2002-04-25 Shuffle Master Encryption in a secure computerized gaming system
US20020052798A1 (en) * 2000-11-02 2002-05-02 Takashi Nishikado Service system
US6389460B1 (en) * 1998-05-13 2002-05-14 Compaq Computer Corporation Method and apparatus for efficient storage and retrieval of objects in and from an object storage device
US20020059384A1 (en) * 2000-07-13 2002-05-16 Koninklijke Philips Electronics N.V. Substituting URL for attachment in forwarding electronic content
US20020057799A1 (en) * 2000-10-10 2002-05-16 Fumio Kohno Data delivery system, server apparatus, reproducing apparatus, data delivery method, data playback method, storage medium, control, signal, and transmission data signal
US6397186B1 (en) * 1999-12-22 2002-05-28 Ambush Interactive, Inc. Hands-free, voice-operated remote control transmitter
US20020071557A1 (en) * 2000-12-07 2002-06-13 Nguyen Binh T. Secured virtual network in a gaming environment
US6412008B1 (en) * 1999-01-28 2002-06-25 International Business Machines Corporation System and method for cooperative client/server customization of web pages
US6412011B1 (en) * 1998-09-14 2002-06-25 At&T Corp. Method and apparatus to enhance a multicast information stream in a communication network
US20020085720A1 (en) * 2000-12-01 2002-07-04 Masahiro Okada Game apparatus managing system, game apparatus, controlling method, computer program and recording medium
US20020169974A1 (en) * 2001-03-01 2002-11-14 Microsoft Corporation Detecting and responding to a clock rollback in a digital rights management system on a computing device
US20020184160A1 (en) * 2001-05-31 2002-12-05 Bijan Tadayon Method and apparatus for assigning conditional or consequential rights to documents and documents having such rights
US20030004888A1 (en) * 1997-05-13 2003-01-02 Toru Kambayashi Information recording apparatus, information reproducing apparatus, and information distribution system
US20030009423A1 (en) * 2001-05-31 2003-01-09 Xin Wang Rights offering and granting
US6510502B1 (en) * 1998-05-14 2003-01-21 Kabushiki Kaisha Sega Enterprises Information processing device and method for reading information recorded on an information recording medium
US20030023427A1 (en) * 2001-07-26 2003-01-30 Lionel Cassin Devices, methods and a system for implementing a media content delivery and playback scheme
US20030023564A1 (en) * 2001-05-31 2003-01-30 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US20030028622A1 (en) * 2001-08-06 2003-02-06 Mitsuhiro Inoue License management server, terminal device, license management system and usage restriction control method
US6526581B1 (en) * 1999-08-03 2003-02-25 Ucentric Holdings, Llc Multi-service in-home network with an open interface
US20030045355A1 (en) * 2000-09-11 2003-03-06 Claude Comair Communication system and method using pictorial characters
US6544126B2 (en) * 2000-04-25 2003-04-08 Nintendo Co., Ltd. Portable game machine with download capability
US6557104B2 (en) * 1997-05-02 2003-04-29 Phoenix Technologies Ltd. Method and apparatus for secure processing of cryptographic keys
US6571279B1 (en) * 1997-12-05 2003-05-27 Pinpoint Incorporated Location enhanced information delivery system
US20030114227A1 (en) * 2001-10-10 2003-06-19 Rubin Jason Pehr System and method for saving game data
US20030157985A1 (en) * 2002-02-19 2003-08-21 Koninklijke Philips Electronics N.V. Virtual IPR system in electronic game environment
US6675350B1 (en) * 1999-11-04 2004-01-06 International Business Machines Corporation System for collecting and displaying summary information from disparate sources
US20040015426A1 (en) * 2002-03-14 2004-01-22 Bijan Tadayon System and method for expressing usage rights with sound signals
US6691312B1 (en) * 1999-03-19 2004-02-10 University Of Massachusetts Multicasting video
US6697948B1 (en) * 1999-05-05 2004-02-24 Michael O. Rabin Methods and apparatus for protecting information
US20040039929A1 (en) * 2002-08-26 2004-02-26 Jerry Decime System and method for authenticating digital content
US20040044901A1 (en) * 2002-08-30 2004-03-04 Serkowski Robert J. License file serial number tracking
US6704797B1 (en) * 1999-06-10 2004-03-09 International Business Machines Corporation Method and system for distributing image-based content on the internet
US20040054923A1 (en) * 2002-08-30 2004-03-18 Seago Tom E. Digital rights and content management system and method for enhanced wireless provisioning
US20040083388A1 (en) * 2002-10-25 2004-04-29 Nguyen The Vinh Method and apparatus for monitoring data packets in a packet-switched network
US20040098297A1 (en) * 2002-06-27 2004-05-20 Borthwick Alvin J. System for managing requests and method of managing requests
US20040098610A1 (en) * 2002-06-03 2004-05-20 Hrastar Scott E. Systems and methods for automated network policy exception detection and correction
US20040098580A1 (en) * 2002-11-15 2004-05-20 Microsoft Corporation State reference
US20040102987A1 (en) * 2002-03-29 2004-05-27 Eiji Takahashi Content reproduction apparatus and content reproduction control method
US20050004875A1 (en) * 2001-07-06 2005-01-06 Markku Kontio Digital rights management in a mobile communications environment
US20050038753A1 (en) * 2003-02-07 2005-02-17 Wei Yen Static-or-dynamic and limited-or-unlimited content rights
US6859535B1 (en) * 1998-10-16 2005-02-22 Matsushita Electric Industrial Co., Ltd. Digital content protection system
US6873975B1 (en) * 1999-04-06 2005-03-29 Fujitsu Limited Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method
US20050071640A1 (en) * 2003-09-25 2005-03-31 General Instrument Corporation Method and apparatus for authenticating data
US6882979B1 (en) * 1999-06-18 2005-04-19 Onadine, Inc. Generating revenue for the use of softgoods that are freely distributed over a network
US20050097618A1 (en) * 2003-11-04 2005-05-05 Universal Electronics Inc. System and method for saving and recalling state data for media and home appliances
US6901386B1 (en) * 2000-03-31 2005-05-31 Intel Corporation Electronic asset lending library method and apparatus
US6993557B1 (en) * 1999-10-25 2006-01-31 Broadon Communications Corp. Creation of customized web pages for use in a system of dynamic trading of knowledge, goods and services
US20060026691A1 (en) * 2004-07-29 2006-02-02 Samsung Electronics Co., Ltd. Method of transmitting and reproducing content processed by various DRM systems
US20060031222A1 (en) * 2002-12-19 2006-02-09 Uwe Hannsmann Method for providing of content data to a client
US7020480B2 (en) * 2002-09-19 2006-03-28 Research In Motion Limited Apparatus and method of wireless instant messaging
US7024394B1 (en) * 2000-07-07 2006-04-04 International Business Machines Corporation System and method for protecting user logoff from web business transactions
US20060080529A1 (en) * 2004-10-08 2006-04-13 Samsung Electronics Co., Ltd. Digital rights management conversion method and apparatus
US20060090084A1 (en) * 2004-10-22 2006-04-27 Mark Buer Secure processing environment
US7039708B1 (en) * 1998-09-12 2006-05-02 International Business Machines Corporation Apparatus and method for establishing communication in a computer network
US7051212B2 (en) * 1995-02-13 2006-05-23 Intertrust Technologies Corp. Systems and methods for secure transaction management and electronic rights protection
US20070005504A1 (en) * 2005-06-30 2007-01-04 Microsoft Corporation Dynamic digital content licensing
US20070016832A1 (en) * 2005-07-04 2007-01-18 Yoav Weiss System, device and method of verifying that a code is executed by a processor
US20070067826A1 (en) * 2005-09-19 2007-03-22 Texas Instruments Incorporated Method and system for preventing unsecure memory accesses
US7206765B2 (en) * 2001-01-17 2007-04-17 Contentguard Holdings, Inc. System and method for supplying and managing usage rights based on rules
US7322042B2 (en) * 2003-02-07 2008-01-22 Broadon Communications Corp. Secure and backward-compatible processor and secure software execution thereon
US7330717B2 (en) * 2001-02-23 2008-02-12 Lucent Technologies Inc. Rule-based system and method for managing the provisioning of user applications on limited-resource and/or wireless devices
US20080096608A1 (en) * 2006-10-23 2008-04-24 Nagravision Sa Method for loading and managing an application on mobile equipment
US7644429B2 (en) * 1997-03-21 2010-01-05 Nagra Thomson Licensing Broadcast and reception, and conditional access system therefor

Family Cites Families (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5347579A (en) 1989-07-05 1994-09-13 Blandford Robert R Personal computer diary
GB2239810B (en) * 1990-01-10 1994-06-22 Leung Iu Sum Computer game control apparatus
US5261069A (en) 1990-08-13 1993-11-09 Hewlett-Packard Company Method of maintaining consistency of cached data in a database system
US5577209A (en) 1991-07-11 1996-11-19 Itt Corporation Apparatus and method for providing multi-level security for communication among computers and terminals on a network
US5367698A (en) 1991-10-31 1994-11-22 Epoch Systems, Inc. Network file migration system
US5590199A (en) 1993-10-12 1996-12-31 The Mitre Corporation Electronic information network user authentication and authorization system
US5539828A (en) 1994-05-31 1996-07-23 Intel Corporation Apparatus and method for providing secured communications
US5586264A (en) 1994-09-08 1996-12-17 Ibm Corporation Video optimized media streamer with cache management
US5729279A (en) 1995-01-26 1998-03-17 Spectravision, Inc. Video distribution system
US7143290B1 (en) 1995-02-13 2006-11-28 Intertrust Technologies Corporation Trusted and secure techniques, systems and methods for item delivery and execution
US6948070B1 (en) 1995-02-13 2005-09-20 Intertrust Technologies Corporation Systems and methods for secure transaction management and electronic rights protection
US7069451B1 (en) 1995-02-13 2006-06-27 Intertrust Technologies Corp. Systems and methods for secure transaction management and electronic rights protection
US5786587A (en) 1995-08-10 1998-07-28 American Bank Note Holographics, Inc. Enhancement of chip card security
US5815662A (en) 1995-08-15 1998-09-29 Ong; Lance Predictive memory caching for media-on-demand systems
US5829046A (en) 1995-10-27 1998-10-27 Emc Corporation On-line tape backup using an integrated cached disk array
US5781901A (en) 1995-12-21 1998-07-14 Intel Corporation Transmitting electronic mail attachment over a network using a e-mail page
WO1997025798A1 (en) * 1996-01-11 1997-07-17 Mrj, Inc. System for controlling access and distribution of digital property
DE19610010A1 (en) 1996-03-14 1997-09-18 Sel Alcatel Ag Device and service for the transmission of video image data, and means for transmitting request signals
US5809242A (en) 1996-04-19 1998-09-15 Juno Online Services, L.P. Electronic mail system for displaying advertisement at local computer received from remote system while the local computer is off-line the remote system
JPH09284746A (en) 1996-04-19 1997-10-31 Sony Corp System and method for two-way information transmission
US5779549A (en) 1996-04-22 1998-07-14 Walker Assest Management Limited Parnership Database driven online distributed tournament system
US6157721A (en) 1996-08-12 2000-12-05 Intertrust Technologies Corp. Systems and methods using cryptography to protect secure computing environments
JPH10207779A (en) * 1997-01-21 1998-08-07 Victor Co Of Japan Ltd Digital information management system, terminal equipment, information management sensor and digital information management method
US7062500B1 (en) 1997-02-25 2006-06-13 Intertrust Technologies Corp. Techniques for defining, using and manipulating rights management data structures
US5983227A (en) 1997-06-12 1999-11-09 Yahoo, Inc. Dynamic page generator
US5993627A (en) 1997-06-24 1999-11-30 Large Scale Biology Corporation Automated system for two-dimensional electrophoresis
FR2766942B1 (en) 1997-07-31 1999-10-01 Gemplus Card Int card reader with chip microcontroller and security component
US6278782B1 (en) 1997-09-16 2001-08-21 Safenet, Inc. Method of implementing a key recovery system
US6085193A (en) 1997-09-29 2000-07-04 International Business Machines Corporation Method and system for dynamically prefetching information via a server hierarchy
US6594682B2 (en) 1997-10-28 2003-07-15 Microsoft Corporation Client-side system for scheduling delivery of web content and locally managing the web content
US7092914B1 (en) 1997-11-06 2006-08-15 Intertrust Technologies Corporation Methods for matching, selecting, narrowcasting, and/or classifying based on rights management and/or other information
US6289452B1 (en) * 1997-11-07 2001-09-11 Cybersource Corporation Method and system for delivering digital products electronically
US6167441A (en) 1997-11-21 2000-12-26 International Business Machines Corporation Customization of web pages based on requester type
JPH11203127A (en) * 1998-01-09 1999-07-30 Casio Comput Co Ltd Program management system and control method for terminal management system
EP0944256A1 (en) 1998-03-19 1999-09-22 Hitachi Europe Limited Copy protection apparatus and method
US6141756A (en) 1998-04-27 2000-10-31 Motorola, Inc. Apparatus and method of reading a program into a processor
US6148340A (en) 1998-04-30 2000-11-14 International Business Machines Corporation Method and system for differencing container files
US6256637B1 (en) 1998-05-05 2001-07-03 Gemstone Systems, Inc. Transactional virtual machine architecture
DE69942712D1 (en) 1998-05-29 2010-10-14 Texas Instruments Inc Secure computing device
US6427238B1 (en) 1998-05-29 2002-07-30 Opentv, Inc. Module manager for interactive television system
US6330566B1 (en) 1998-06-22 2001-12-11 Microsoft Corporation Apparatus and method for optimizing client-state data storage
JP4634547B2 (en) 1998-06-30 2011-02-23 株式会社東芝 Real-time information delivery method
US6751729B1 (en) 1998-07-24 2004-06-15 Spatial Adventures, Inc. Automated operation and security system for virtual private networks
US7228437B2 (en) 1998-08-13 2007-06-05 International Business Machines Corporation Method and system for securing local database file of local content stored on end-user system
US6826593B1 (en) 1998-09-01 2004-11-30 Lucent Technologies Inc. Computer implemented method and apparatus for fulfilling a request for information content with a user-selectable version of a file containing that information content
US6292899B1 (en) 1998-09-23 2001-09-18 Mcbride Randall C. Volatile key apparatus for safeguarding confidential data stored in a computer system memory
US6563517B1 (en) 1998-10-02 2003-05-13 International Business Machines Corp. Automatic data quality adjustment to reduce response time in browsing
US6574605B1 (en) 1998-11-17 2003-06-03 Citibank, N.A. Method and system for strategic services enterprise workload management
US6892238B2 (en) 1999-01-27 2005-05-10 International Business Machines Corporation Aggregating and analyzing information about content requested in an e-commerce web environment to determine conversion rates
US6321209B1 (en) 1999-02-18 2001-11-20 Wired Solutions, Llc System and method for providing a dynamic advertising content window within a window based content manifestation environment provided in a browser
US7174457B1 (en) 1999-03-10 2007-02-06 Microsoft Corporation System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third party
US6470378B1 (en) 1999-03-31 2002-10-22 Intel Corporation Dynamic content customization in a clientserver environment
US6920567B1 (en) 1999-04-07 2005-07-19 Viatech Technologies Inc. System and embedded license control mechanism for the creation and distribution of digital content files and enforcement of licensed use of the digital content files
US6654388B1 (en) 1999-05-26 2003-11-25 Larscom Incorporated Method and apparatus for automatically determining allocation of voice and data channels on T1/E1 line
US6500070B1 (en) 1999-05-28 2002-12-31 Nintendo Co., Ltd. Combined game system of portable and video game machines
EP1061516A1 (en) 1999-06-08 2000-12-20 Deutsche Thomson-Brandt Gmbh Method for play back of an encrypted piece of information recorded on an information carrier and play back apparatus for use within said method
US6446113B1 (en) 1999-07-19 2002-09-03 Groove Networks, Inc. Method and apparatus for activity-based collaboration by a computer system equipped with a dynamics manager
US7636843B1 (en) 1999-08-20 2009-12-22 Sony Corporation Information transmission system and method, drive device and access method, information recording medium, device and method for producing recording medium
WO2001016776A1 (en) 1999-08-27 2001-03-08 Sony Corporation Information transmission system, transmitter, and transmission method as well as information reception system, receiver and reception method
US6760324B1 (en) 1999-09-10 2004-07-06 Array Telecom Corporation Method, system, and computer program product for providing voice over the internet communication
CA2322113A1 (en) * 1999-10-04 2001-04-04 Pitney Bowes Inc. System and method for managing user permissions for accessing functionality of multiple software applications
JP2001195077A (en) 1999-10-25 2001-07-19 Sony Corp Device and method for transmitting contents data, device and method for controlling contents data, and recording medium
US6928551B1 (en) 1999-10-29 2005-08-09 Lockheed Martin Corporation Method and apparatus for selectively denying access to encoded data
JP2001209586A (en) 2000-01-26 2001-08-03 Toshiba Corp Unit and method of controlling contents for computer
US6606644B1 (en) 2000-02-24 2003-08-12 International Business Machines Corporation System and technique for dynamic information gathering and targeted advertising in a web based model using a live information selection and analysis tool
US7020303B2 (en) 2000-03-18 2006-03-28 Digimarc Corporation Feature-based watermarks and watermark detection strategies
JP2001340646A (en) 2000-05-31 2001-12-11 Namco Ltd Competition game device and information storage medium
JP2002024178A (en) 2000-07-11 2002-01-25 Web I Inc Contents authentication system and method, and recording medium
US7475398B2 (en) 2000-08-01 2009-01-06 Wind River Systems, Inc. System and method for implementing a smart system call
DE20014381U1 (en) 2000-08-21 2000-11-30 Rent A Brain Gmbh An apparatus for verification of identity
US6805629B1 (en) * 2000-09-13 2004-10-19 Casino Data System Gaming device and method
US6785712B1 (en) 2000-09-21 2004-08-31 Rockwell Collins, Inc. Airborne e-mail data transfer protocol
US7237123B2 (en) 2000-09-22 2007-06-26 Ecd Systems, Inc. Systems and methods for preventing unauthorized use of digital content
WO2002029642A3 (en) 2000-10-04 2003-11-06 Routefree Inc Replacement of requested data with equivalent data
WO2002039640A3 (en) * 2000-10-25 2003-03-13 David B Lloyd Electronic game programming system
US7168089B2 (en) 2000-12-07 2007-01-23 Igt Secured virtual network in a gaming environment
US6811486B1 (en) * 2000-12-20 2004-11-02 Sierra Design Group Method and apparatus for enhancing game play through savable game play state
WO2002052798A9 (en) 2000-12-22 2013-11-07 Research In Motion Limited Wireless router system and method
US7092953B1 (en) 2000-12-28 2006-08-15 Rightlsline, Inc. Apparatus and methods for intellectual property database navigation
US20020095382A1 (en) 2001-01-10 2002-07-18 Hiroki Taoka Content decryption device
WO2002061538A3 (en) 2001-02-01 2002-11-28 Abn Amro Services Company Inc A system and method for an automatic license facility
US7308717B2 (en) 2001-02-23 2007-12-11 International Business Machines Corporation System and method for supporting digital rights management in an enhanced Java™ 2 runtime environment
KR100932944B1 (en) 2001-03-12 2009-12-21 코닌클리케 필립스 일렉트로닉스 엔.브이. And a receiving device for securely storing a content item, the playback device
GB2373677B (en) 2001-03-19 2005-08-10 Nokia Mobile Phones Ltd Client server system
JP3392120B2 (en) 2001-03-23 2003-03-31 任天堂株式会社 Game device and its program
JP2002358460A (en) 2001-03-27 2002-12-13 Art Connection:Kk Web site addition system
US7584491B2 (en) * 2001-04-25 2009-09-01 Sony Corporation System and method for managing interactive programming and advertisements in interactive broadcast systems
JP4691268B2 (en) 2001-05-02 2011-06-01 任天堂株式会社 Game system and a game program
US6466048B1 (en) 2001-05-23 2002-10-15 Mosaid Technologies, Inc. Method and apparatus for switchably selecting an integrated circuit operating mode
JP3966375B2 (en) * 2001-06-21 2007-08-29 平藤 雅之 Parallel processing calculation consignment system via the Internet
US7130829B2 (en) 2001-06-29 2006-10-31 International Business Machines Corporation Digital rights management
US7974923B2 (en) 2001-11-20 2011-07-05 Contentguard Holdings, Inc. Extensible rights expression processing system
US7558759B2 (en) 2001-11-20 2009-07-07 Contentguard Holdings, Inc. Systems and methods for creating, manipulating and processing rights and contract expressions using tokenized templates
US7203310B2 (en) 2001-12-04 2007-04-10 Microsoft Corporation Methods and systems for cryptographically protecting secure content
US20030120541A1 (en) 2001-12-21 2003-06-26 Siann Jonathan I. Storage and delivery of electronic media content with advertising
US7197301B2 (en) 2002-03-04 2007-03-27 Telespree Communications Method and apparatus for secure immediate wireless access in a telecommunications network
US20030220142A1 (en) 2002-05-21 2003-11-27 Mark Siegel Video Game controller with display screen
US7685254B2 (en) 2003-06-10 2010-03-23 Pandya Ashish A Runtime adaptable search processor
KR101037838B1 (en) 2003-04-25 2011-05-31 애플 인크. Methods and system for secure network-based distribution of content
US20050122977A1 (en) 2003-12-05 2005-06-09 Microsoft Corporation Efficient download mechanism for devices with limited local storage
US7940932B2 (en) 2004-04-08 2011-05-10 Texas Instruments Incorporated Methods, apparatus, and systems for securing SIM (subscriber identity module) personalization and other data on a first processor and secure communication of the SIM data to a second processor
US8908699B2 (en) 2004-04-16 2014-12-09 Broadcom Corporation Providing automatic format conversion via an access gateway in a home
US7869593B2 (en) 2005-01-07 2011-01-11 First Data Corporation Software for providing based on shared knowledge public keys having same private key
US20060236122A1 (en) 2005-04-15 2006-10-19 Microsoft Corporation Secure boot
US8959339B2 (en) 2005-12-23 2015-02-17 Texas Instruments Incorporated Method and system for preventing unauthorized processor mode switches
US20080275750A1 (en) 2007-05-04 2008-11-06 Credit Suisse Securities (Usa) Llc Method and system for processing and communicating corporate action events

Patent Citations (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095798A (en) * 1989-01-10 1992-03-17 Nintendo Co. Ltd. Electronic gaming device with pseudo-stereophonic sound generating capabilities
US5184830A (en) * 1989-01-10 1993-02-09 Nintendo Company Limited Compact hand-held video game system
US5426763A (en) * 1989-04-20 1995-06-20 Nintendo Co., Ltd. Memory cartridge including a key detector for inhibiting memory access and preventing undesirable write operations
US5715398A (en) * 1989-06-16 1998-02-03 R.R. Donnelley & Sons Company System for distributing items from an origin to a plurality of destinations
US5404505A (en) * 1991-11-01 1995-04-04 Finisar Corporation System for scheduling transmission of indexed and requested database tiers on demand at varying repetition rates
US5400402A (en) * 1993-06-07 1995-03-21 Garfinkle; Norton System for limiting use of down-loaded video-on-demand data
US5528513A (en) * 1993-11-04 1996-06-18 Digital Equipment Corp. Scheduling and admission control policy for a continuous media server
US5610839A (en) * 1994-10-07 1997-03-11 Itt Corporation Communications management system architecture
US5638443A (en) * 1994-11-23 1997-06-10 Xerox Corporation System for controlling the distribution and use of composite digital works
US5715403A (en) * 1994-11-23 1998-02-03 Xerox Corporation System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar
US20010014882A1 (en) * 1994-11-23 2001-08-16 Stefik Mark J. System for controlling the distribution and use of digital works using digital tickets
US6029046A (en) * 1994-12-01 2000-02-22 Scientific-Atlanta, Inc. Method and apparatus for a game delivery service including flash memory and a game back-up module
US7051212B2 (en) * 1995-02-13 2006-05-23 Intertrust Technologies Corp. Systems and methods for secure transaction management and electronic rights protection
US5867223A (en) * 1995-07-17 1999-02-02 Gateway 2000, Inc. System for assigning multichannel audio signals to independent wireless audio output devices
US5765152A (en) * 1995-10-13 1998-06-09 Trustees Of Dartmouth College System and method for managing copyrighted electronic media
US5903723A (en) * 1995-12-21 1999-05-11 Intel Corporation Method and apparatus for transmitting electronic mail attachments with attachment references
US5913039A (en) * 1996-01-19 1999-06-15 Matsushita Electric Industrial Co., Ltd. Video on demand system with a transmission schedule table in the video server including entries for client identifiers, video titles, and reproduction start times
US6044157A (en) * 1996-03-08 2000-03-28 Matsushita Electric Industrial Co., Ltd. Microprocessor suitable for reproducing AV data while protecting the AV data from illegal copy and image information processing system using the microprocessor
US5905860A (en) * 1996-03-15 1999-05-18 Novell, Inc. Fault tolerant electronic licensing system
US6219708B1 (en) * 1996-05-30 2001-04-17 Multi-Tech Systems, Inc. System for network resource management
US6212657B1 (en) * 1996-08-08 2001-04-03 Nstreams Technologies, Inc. System and process for delivering digital data on demand
US5892900A (en) * 1996-08-30 1999-04-06 Intertrust Technologies Corp. Systems and methods for secure transaction management and electronic rights protection
US6032200A (en) * 1996-09-30 2000-02-29 Apple Computer, Inc. Process scheduling for streaming data through scheduling of disk jobs and network jobs and the relationship of the scheduling between these types of jobs
US5909491A (en) * 1996-11-06 1999-06-01 Nokia Mobile Phones Limited Method for sending a secure message in a telecommunications system
US6016348A (en) * 1996-11-27 2000-01-18 Thomson Consumer Electronics, Inc. Decoding system and data format for processing and storing encrypted broadcast, cable or satellite video data
US6185625B1 (en) * 1996-12-20 2001-02-06 Intel Corporation Scaling proxy server sending to the client a graphical user interface for establishing object encoding preferences after receiving the client's request for the object
US6049821A (en) * 1997-01-24 2000-04-11 Motorola, Inc. Proxy host computer and method for accessing and retrieving information between a browser and a proxy
US6205475B1 (en) * 1997-02-26 2001-03-20 William Michael Pitts Request interceptor in network nodes for determining local storage of file image satisfying predetermined criteria
US7644429B2 (en) * 1997-03-21 2010-01-05 Nagra Thomson Licensing Broadcast and reception, and conditional access system therefor
US6557104B2 (en) * 1997-05-02 2003-04-29 Phoenix Technologies Ltd. Method and apparatus for secure processing of cryptographic keys
US20030004888A1 (en) * 1997-05-13 2003-01-02 Toru Kambayashi Information recording apparatus, information reproducing apparatus, and information distribution system
US6219680B1 (en) * 1997-06-19 2001-04-17 International Business Machines Corporation System and method for building a web site for use in E-commerce with user specific pricing
US6038601A (en) * 1997-07-21 2000-03-14 Tibco, Inc. Method and apparatus for storing and delivering documents on the internet
US6243719B1 (en) * 1997-10-20 2001-06-05 Fujitsu Limited Data caching apparatus, data caching method and medium recorded with data caching program in client/server distributed system
US6571279B1 (en) * 1997-12-05 2003-05-27 Pinpoint Incorporated Location enhanced information delivery system
US20020032784A1 (en) * 1998-03-25 2002-03-14 Community Learning And Information Network Computer architecture for managing courseware in a shared use operating environment
US6195433B1 (en) * 1998-05-08 2001-02-27 Certicom Corp. Private key validity and validation
US6389460B1 (en) * 1998-05-13 2002-05-14 Compaq Computer Corporation Method and apparatus for efficient storage and retrieval of objects in and from an object storage device
US6510502B1 (en) * 1998-05-14 2003-01-21 Kabushiki Kaisha Sega Enterprises Information processing device and method for reading information recorded on an information recording medium
US6052720A (en) * 1998-05-14 2000-04-18 Sun Microsystems, Inc. Generic schema for storing configuration information on a server computer
US6226618B1 (en) * 1998-08-13 2001-05-01 International Business Machines Corporation Electronic content delivery system
US6389538B1 (en) * 1998-08-13 2002-05-14 International Business Machines Corporation System for tracking end-user electronic content usage
US7039708B1 (en) * 1998-09-12 2006-05-02 International Business Machines Corporation Apparatus and method for establishing communication in a computer network
US6412011B1 (en) * 1998-09-14 2002-06-25 At&T Corp. Method and apparatus to enhance a multicast information stream in a communication network
US6859535B1 (en) * 1998-10-16 2005-02-22 Matsushita Electric Industrial Co., Ltd. Digital content protection system
US6338050B1 (en) * 1998-11-16 2002-01-08 Trade Access, Inc. System and method for providing and updating user supplied context for a negotiations system
US6014558A (en) * 1998-12-28 2000-01-11 Northern Telecom Limited Variable rate optional security measures method and apparatus for wireless communications network
US6377972B1 (en) * 1999-01-19 2002-04-23 Lucent Technologies Inc. High quality streaming multimedia
US6412008B1 (en) * 1999-01-28 2002-06-25 International Business Machines Corporation System and method for cooperative client/server customization of web pages
US6691312B1 (en) * 1999-03-19 2004-02-10 University Of Massachusetts Multicasting video
US6873975B1 (en) * 1999-04-06 2005-03-29 Fujitsu Limited Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method
US6697948B1 (en) * 1999-05-05 2004-02-24 Michael O. Rabin Methods and apparatus for protecting information
US6704797B1 (en) * 1999-06-10 2004-03-09 International Business Machines Corporation Method and system for distributing image-based content on the internet
US6882979B1 (en) * 1999-06-18 2005-04-19 Onadine, Inc. Generating revenue for the use of softgoods that are freely distributed over a network
US6526581B1 (en) * 1999-08-03 2003-02-25 Ucentric Holdings, Llc Multi-service in-home network with an open interface
US6371854B1 (en) * 1999-08-20 2002-04-16 Ninetendo Co., Ltd. Combined game system
US6993557B1 (en) * 1999-10-25 2006-01-31 Broadon Communications Corp. Creation of customized web pages for use in a system of dynamic trading of knowledge, goods and services
US6675350B1 (en) * 1999-11-04 2004-01-06 International Business Machines Corporation System for collecting and displaying summary information from disparate sources
US6397186B1 (en) * 1999-12-22 2002-05-28 Ambush Interactive, Inc. Hands-free, voice-operated remote control transmitter
US20020049909A1 (en) * 2000-03-08 2002-04-25 Shuffle Master Encryption in a secure computerized gaming system
US6901386B1 (en) * 2000-03-31 2005-05-31 Intel Corporation Electronic asset lending library method and apparatus
US6544126B2 (en) * 2000-04-25 2003-04-08 Nintendo Co., Ltd. Portable game machine with download capability
US20020016818A1 (en) * 2000-05-11 2002-02-07 Shekhar Kirani System and methodology for optimizing delivery of email attachments for disparate devices
US7024394B1 (en) * 2000-07-07 2006-04-04 International Business Machines Corporation System and method for protecting user logoff from web business transactions
US20020059384A1 (en) * 2000-07-13 2002-05-16 Koninklijke Philips Electronics N.V. Substituting URL for attachment in forwarding electronic content
US20030045355A1 (en) * 2000-09-11 2003-03-06 Claude Comair Communication system and method using pictorial characters
US20020057799A1 (en) * 2000-10-10 2002-05-16 Fumio Kohno Data delivery system, server apparatus, reproducing apparatus, data delivery method, data playback method, storage medium, control, signal, and transmission data signal
US20020052798A1 (en) * 2000-11-02 2002-05-02 Takashi Nishikado Service system
US20020085720A1 (en) * 2000-12-01 2002-07-04 Masahiro Okada Game apparatus managing system, game apparatus, controlling method, computer program and recording medium
US20020071557A1 (en) * 2000-12-07 2002-06-13 Nguyen Binh T. Secured virtual network in a gaming environment
US7206765B2 (en) * 2001-01-17 2007-04-17 Contentguard Holdings, Inc. System and method for supplying and managing usage rights based on rules
US7330717B2 (en) * 2001-02-23 2008-02-12 Lucent Technologies Inc. Rule-based system and method for managing the provisioning of user applications on limited-resource and/or wireless devices
US7134144B2 (en) * 2001-03-01 2006-11-07 Microsoft Corporation Detecting and responding to a clock rollback in a digital rights management system on a computing device
US20020169974A1 (en) * 2001-03-01 2002-11-14 Microsoft Corporation Detecting and responding to a clock rollback in a digital rights management system on a computing device
US20030009423A1 (en) * 2001-05-31 2003-01-09 Xin Wang Rights offering and granting
US20030023564A1 (en) * 2001-05-31 2003-01-30 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US20020184160A1 (en) * 2001-05-31 2002-12-05 Bijan Tadayon Method and apparatus for assigning conditional or consequential rights to documents and documents having such rights
US20050004875A1 (en) * 2001-07-06 2005-01-06 Markku Kontio Digital rights management in a mobile communications environment
US20030023427A1 (en) * 2001-07-26 2003-01-30 Lionel Cassin Devices, methods and a system for implementing a media content delivery and playback scheme
US20030028622A1 (en) * 2001-08-06 2003-02-06 Mitsuhiro Inoue License management server, terminal device, license management system and usage restriction control method
US20030114227A1 (en) * 2001-10-10 2003-06-19 Rubin Jason Pehr System and method for saving game data
US20030157985A1 (en) * 2002-02-19 2003-08-21 Koninklijke Philips Electronics N.V. Virtual IPR system in electronic game environment
US20040015426A1 (en) * 2002-03-14 2004-01-22 Bijan Tadayon System and method for expressing usage rights with sound signals
US20040102987A1 (en) * 2002-03-29 2004-05-27 Eiji Takahashi Content reproduction apparatus and content reproduction control method
US20040098610A1 (en) * 2002-06-03 2004-05-20 Hrastar Scott E. Systems and methods for automated network policy exception detection and correction
US20040098297A1 (en) * 2002-06-27 2004-05-20 Borthwick Alvin J. System for managing requests and method of managing requests
US20040039929A1 (en) * 2002-08-26 2004-02-26 Jerry Decime System and method for authenticating digital content
US20040054923A1 (en) * 2002-08-30 2004-03-18 Seago Tom E. Digital rights and content management system and method for enhanced wireless provisioning
US20040044901A1 (en) * 2002-08-30 2004-03-04 Serkowski Robert J. License file serial number tracking
US7020480B2 (en) * 2002-09-19 2006-03-28 Research In Motion Limited Apparatus and method of wireless instant messaging
US20040083388A1 (en) * 2002-10-25 2004-04-29 Nguyen The Vinh Method and apparatus for monitoring data packets in a packet-switched network
US20040098580A1 (en) * 2002-11-15 2004-05-20 Microsoft Corporation State reference
US20060031222A1 (en) * 2002-12-19 2006-02-09 Uwe Hannsmann Method for providing of content data to a client
US20050038753A1 (en) * 2003-02-07 2005-02-17 Wei Yen Static-or-dynamic and limited-or-unlimited content rights
US7322042B2 (en) * 2003-02-07 2008-01-22 Broadon Communications Corp. Secure and backward-compatible processor and secure software execution thereon
US7380275B2 (en) * 2003-02-07 2008-05-27 Broadon Communications Corp. Secure and backward-compatible processor and secure software execution thereon
US20050071640A1 (en) * 2003-09-25 2005-03-31 General Instrument Corporation Method and apparatus for authenticating data
US20050097618A1 (en) * 2003-11-04 2005-05-05 Universal Electronics Inc. System and method for saving and recalling state data for media and home appliances
US20060026691A1 (en) * 2004-07-29 2006-02-02 Samsung Electronics Co., Ltd. Method of transmitting and reproducing content processed by various DRM systems
US20060080529A1 (en) * 2004-10-08 2006-04-13 Samsung Electronics Co., Ltd. Digital rights management conversion method and apparatus
US20060090084A1 (en) * 2004-10-22 2006-04-27 Mark Buer Secure processing environment
US20070005504A1 (en) * 2005-06-30 2007-01-04 Microsoft Corporation Dynamic digital content licensing
US20070016832A1 (en) * 2005-07-04 2007-01-18 Yoav Weiss System, device and method of verifying that a code is executed by a processor
US20070067826A1 (en) * 2005-09-19 2007-03-22 Texas Instruments Incorporated Method and system for preventing unsecure memory accesses
US20080096608A1 (en) * 2006-10-23 2008-04-24 Nagravision Sa Method for loading and managing an application on mobile equipment

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9985781B2 (en) 2003-02-07 2018-05-29 Acer Cloud Technology, Inc. Ensuring authenticity in a closed content distribution system
US9646142B2 (en) 2003-02-07 2017-05-09 Acer Cloud Technology Inc. Ensuring authenticity in a closed content distribution system
US20080189349A1 (en) * 2007-02-05 2008-08-07 Broadcom Corporation Media Transport Protocol Extensions for System Information Exchange, and Applications Thereof
US9172710B2 (en) * 2007-02-05 2015-10-27 Broadcom Corporation Media transport protocol extensions for system integrity and robustness, and applications thereof
US8626931B2 (en) 2007-02-05 2014-01-07 Broadcom Corporation Media transport protocol extensions for system information exchange, and applications thereof
US20080189348A1 (en) * 2007-02-05 2008-08-07 Broadcom Corporation Media Transport Protocol Extensions for System Integrity and Robustness, and Applications Thereof
US20080288788A1 (en) * 2007-05-16 2008-11-20 Broadcom Corporation Digital Rights Management Metafile, Management Protocol and Applications Thereof
US8752191B2 (en) 2007-05-16 2014-06-10 Broadcom Corporation Generic digital rights management framework, and applications thereof
US8832467B2 (en) 2007-05-16 2014-09-09 Broadcom Corporation Digital rights management metafile, management protocol and applications thereof
US20090083429A1 (en) * 2007-05-16 2009-03-26 Broadcom Corporation Generic Digital Rights Management Framework, and Applications Thereof
US8707447B2 (en) * 2009-03-26 2014-04-22 Brother Kogyo Kabushiki Kaisha License registration device that registers license for use of program on data processing device
US20100251389A1 (en) * 2009-03-26 2010-09-30 Brother Kogyo Kabushiki Kaisha License registration device that registers license for use of program on data processing device
US20100333212A1 (en) * 2009-06-25 2010-12-30 Microsoft Corporation Portable parameter-based licensing

Also Published As

Publication number Publication date Type
CN1879112A (en) 2006-12-13 application
JP4875493B2 (en) 2012-02-15 grant
US20050038753A1 (en) 2005-02-17 application
EP1680761A4 (en) 2010-11-24 application
EP1680761B1 (en) 2018-03-14 grant
JP2007510991A (en) 2007-04-26 application
WO2005045644A3 (en) 2005-08-11 application
US20050273438A1 (en) 2005-12-08 application
US7464058B2 (en) 2008-12-09 grant
US20050273439A1 (en) 2005-12-08 application
EP1680761A2 (en) 2006-07-19 application
US8131649B2 (en) 2012-03-06 grant
WO2005045644A2 (en) 2005-05-19 application

Similar Documents

Publication Publication Date Title
Wu When code isn't law
Bechtold Digital rights management in the United States and Europe
US6697948B1 (en) Methods and apparatus for protecting information
US6301660B1 (en) Computer system for protecting a file and a method for protecting a file
US5533124A (en) Electronic trading card system
US7562397B1 (en) Method and system for facilitating search, selection, preview, purchase evaluation, offering for sale, distribution, and/or sale of digital content and enhancing the security thereof
US6973444B1 (en) Method for interdependently validating a digital content package and a corresponding digital license
US7203966B2 (en) Enforcement architecture and method for digital rights management system for roaming a license to a plurality of user devices
US7136838B1 (en) Digital license and method for obtaining/providing a digital license
US7024393B1 (en) Structural of digital rights management (DRM) system
US8571993B2 (en) Reprogrammable security for controlling piracy and enabling interactive content
US7484207B2 (en) Software execution control system and software execution control program
US6775655B1 (en) Rendering digital content in an encrypted rights-protected form
US20050111663A1 (en) System, method, and service for delivering enhanced multimedia content on physical media
US7496540B2 (en) System and method for securing digital content
US7051005B1 (en) Method for obtaining a black box for performing decryption and encryption functions in a digital rights management (DRM) system
US5991399A (en) Method for securely distributing a conditional use private key to a trusted entity on a remote system
US20070219917A1 (en) Digital License Sharing System and Method
US20020013772A1 (en) Binding a digital license to a portable device or the like in a digital rights management (DRM) system and checking out / checking in the digital license to / from the portable device or the like
US20050172309A1 (en) Method and system for providing a media change notification on a computing system
Armstrong Digital rights management and the process of fair use
US6889209B1 (en) Method and apparatus for protecting information and privacy
US7124302B2 (en) Systems and methods for secure transaction management and electronic rights protection
US7383205B1 (en) Structure of a digital content package
US20030028488A1 (en) Supervised license acquisition in a digital rights management system on a computing device

Legal Events

Date Code Title Description
AS Assignment

Owner name: IGWARE INC.,CALIFORNIA

Free format text: CHANGE OF NAME;ASSIGNOR:BROADON;REEL/FRAME:024555/0857

Effective date: 20100609

Owner name: IGWARE INC., CALIFORNIA

Free format text: CHANGE OF NAME;ASSIGNOR:BROADON;REEL/FRAME:024555/0857

Effective date: 20100609

AS Assignment

Owner name: ACER CLOUD TECHNOLOGY, INC., CALIFORNIA

Free format text: CHANGE OF NAME;ASSIGNOR:IGWARE, INC.;REEL/FRAME:028196/0632

Effective date: 20120112