US20130179199A1 - Systems and methods for granting access to digital content using electronic tickets and ticket tokens - Google Patents

Systems and methods for granting access to digital content using electronic tickets and ticket tokens Download PDF

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US20130179199A1
US20130179199A1 US13/436,917 US201213436917A US2013179199A1 US 20130179199 A1 US20130179199 A1 US 20130179199A1 US 201213436917 A US201213436917 A US 201213436917A US 2013179199 A1 US2013179199 A1 US 2013179199A1
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Prior art keywords
ticket
user device
server
token
content
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Abandoned
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US13/436,917
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Ben Ziskind
David L. Smith
Ramon Davila
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Rovi Corp
Sonic IP Inc
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Rovi Corp
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Priority to US201261583807P priority Critical
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Priority to US13/436,917 priority patent/US20130179199A1/en
Assigned to DIVX, LLC reassignment DIVX, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, DAVID L., ZISKIND, Ben, DAVILA, RAMON
Publication of US20130179199A1 publication Critical patent/US20130179199A1/en
Assigned to SONIC IP, INC. reassignment SONIC IP, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DIVX, LLC
Application status is Abandoned legal-status Critical

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    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2387Stream processing in response to a playback request from an end-user, e.g. for trick-play
    • 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
    • G06F2221/0746Emerging technologies

Abstract

Systems and methods for granting access to digital content using electronic tickets and ticket tokens in accordance with embodiments of the invention are disclosed. One embodiment includes a processor, and memory configured to store an electronic ticket, and a ticket token. In addition, the processor is configured to authenticate a merchant server, receive a request for a ticket token for a specific piece of content from the merchant server, generate a ticket token that expires after a predetermined time period, associate the ticket token with an electronic ticket, send the ticket token to the merchant server for delivery to a user device, receive a request to access the identified piece of digital content from the user device, where the request includes the ticket token, send the electronic ticket and access information to the user device, and expire the ticket token.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • The current application claims priority to U.S. Provisional Application No. 61/583,807, filed Jan. 6, 2012, the disclosure of which is incorporated herein by reference.
  • FIELD OF THE INVENTION
  • The present invention relates generally to digital rights management (DRM) systems and more specifically to authentication of user devices when purchasing and requesting access to DRM protected multimedia content.
  • BACKGROUND OF THE INVENTION
  • When a customer visits a movie theater, the process typically involves purchasing a “ticket” at the ticket booth and having the ticket “torn” when the customer enters the theater. A ticket serves as a physical proof of purchase for the right to view a particular movie. A ticket can change possession from the purchaser to another customer and can be used by either person. When a ticket is claimed by entering the theater and being torn, the ticket is thought to be redeemed by the customer presenting the ticket and henceforth the viewing rights granted by the ticket are owned by that customer.
  • In a digital multimedia playback system, viewing rights are generally governed by possession of physical media that contains digital content. When the content is not tied to physical media, such as when digital content is streamed over a network, a digital rights management (DRM) system is often used to restrict access to the content. Such systems typically involve user accounts and associating purchased content with a user account. A user device may be registered to a user account and then have access to the content purchased under that user account.
  • SUMMARY OF THE INVENTION
  • Systems and methods for granting access to digital content using electronic tickets and ticket tokens in accordance with embodiments of the invention are disclosed. One embodiment of the invention includes a processor, and memory configured to store an electronic ticket, and a ticket token. In addition, the processor is configured to authenticate a merchant server, receive a request for a ticket token from the merchant server where the request identifies a piece of digital content, generate a ticket token that expires after a predetermined time period, associate the ticket token with an electronic ticket, send the ticket token to the merchant server for delivery to a user device, receive a request to access the identified piece of digital content from the user device, where the request includes the ticket token, send the electronic ticket and access information for the identified piece of digital content associated with the electronic ticket to the user device, and expire the ticket token.
  • In a further embodiment, the processor is further configured to authenticate a user device registered to a user account and associate an electronic ticket with the user account based upon the ticket token received from the user device.
  • In another embodiment, the request for a ticket token contains at least one field selected from the group of: a customer identifier, a content identifier, a merchant identifier, an account link identifier, a license identifier, a stream identifier, a transaction identifier, and a price.
  • In a still further embodiment, the processor is further configured to generate a new electronic ticket to represent a new purchase.
  • In still another embodiment, the processor is further configured to send the electronic ticket to the merchant server.
  • In a yet further embodiment, the request to access the identified piece of digital content further includes identification of a user account to which the user device is registered.
  • In yet another embodiment, the processor is further configured to associate the electronic ticket with the user account.
  • In a further embodiment again, the processor is further configured to associate the user device with the user account.
  • In another embodiment again, the request to access the identified piece of digital content further includes information that identifies the characteristics or capabilities of the user device.
  • In a further additional embodiment, the processor is further configured to validate the ticket token.
  • In another additional embodiment, the processor is further configured to enforce rules on the playback of content based upon the ticket token.
  • In a still yet further embodiment, the processor is further configured to enforce rules on the playback of content based upon device characteristics.
  • In still yet another embodiment, the access information includes at least one piece of information selected from the group of: a top level index of the digital content, an identifier for the digital content, and cryptographic data that can be used to access the digital content.
  • An embodiment of the method of the invention includes authenticating a merchant server using a DRM server, receiving a request for a ticket token from the merchant server at the DRM server, where the request identifies a piece of digital content, generating a ticket token that expires after a predetermined time period using the DRM server, associating the ticket token with an electronic ticket using the DRM server, sending the ticket token to the merchant server for delivery to a user device using the DRM server, authenticating a user device registered to a user account using the DRM server, receiving a request to access the identified piece of digital content from the user device using the DRM server, where the request includes the ticket token, associating an electronic ticket with the user account based upon the ticket token received from the user device using the DRM server, sending the electronic ticket and access information for the identified piece of digital content associated with the electronic ticket to the user device using the DRM server, and expiring the ticket token using the DRM server.
  • A further embodiment of the method of the invention also includes authenticating a user device registered to a user account and associating an electronic ticket with the user account based upon the ticket token received from the user device.
  • In another embodiment of the method of the invention, the request for a ticket token contains at least one field selected from the group of: a customer identifier, a content identifier, a merchant identifier, an account link identifier, a license identifier, a stream identifier, a transaction identifier, and a price.
  • A still further embodiment of the method of the invention also includes generating a new electronic ticket to represent a new purchase.
  • Still another embodiment of the method of the invention also includes sending the electronic ticket to the merchant server.
  • In a yet further embodiment of the method of the invention, the request to access the identified piece of digital content further includes identification of a user account to which the user device is registered.
  • Yet another embodiment of the method of the invention also includes associating the electronic ticket with the user account.
  • A further embodiment again of the method of the invention also includes associating the user device with the user account.
  • In another embodiment again of the method of the invention, the request to access the identified piece of digital content further includes information that identifies the characteristics or capabilities of the user device.
  • A further additional embodiment of the method of the invention also includes validating the ticket token.
  • Another additional embodiment of the method of the invention also includes enforcing rules on the playback of content based upon the ticket token.
  • A still yet further embodiment of the method of the invention also includes enforcing rules on the playback of content based upon device characteristics.
  • In still yet another embodiment of the method of the invention, the access information includes at least one piece of information selected from the group consisting of: a top level index of the digital content, an identifier for the digital content, and cryptographic data that can be used to access the digital content.
  • Another further embodiment comprises a merchant server, a DRM server, a content server, and a user device. In addition, the merchant server, DRM server, content server, and user device are configured to communicate via a network, the merchant server is configured to authenticate a user account maintained by the merchant server, the user device is configured to request a piece of digital content from the merchant server, the DRM server is configured to authenticate the merchant server, the merchant server is configured to request a ticket token associated with the requested piece of content from the DRM, the merchant server is configured to provide the ticket token to the user device, the DRM server is configured to authenticate the user device as being registered to a user account maintained by the DRM server, the user device is configured to provide the ticket token to the DRM server, the DRM server is configured to associate an electronic ticket with the user account to which the user device is registered, and the DRM server is configured to provide the user device with access information for the requested digital content and the electronic ticket.
  • Another further embodiment of the method of the invention includes authenticating a user account maintained by a merchant server using the merchant server, requesting a piece of digital content from the merchant server using a user device, authenticating the merchant server using a DRM server, requesting a ticket token associated with the requested piece of content from the DRM server using the merchant server, providing the ticket token to the user device using the merchant server, authenticating the user device as being registered to a user account maintained by the DRM server using the DRM server, providing the ticket token to the DRM server using the user device, associating an electronic ticket with the user account to which the user device is registered using the DRM server, and providing the user device with the electronic ticket and access information for the requested digital content using the DRM server.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a system-level overview illustrating a DRM and content distribution system in accordance with an embodiment of the invention.
  • FIG. 2 is a flow chart illustrating a process for providing a user device with access to digital content using an electronic ticket and ticket token, in accordance with an embodiment of the invention.
  • FIG. 2A is a flow chart illustrating a process for providing a user device with access to digital content using an electronic ticket and ticket token on a user device, in accordance with an embodiment of the invention.
  • FIG. 2B is a flow chart illustrating a process for providing a user device with access to digital content using an electronic ticket and ticket token on a DRM server, in accordance with an embodiment of the invention.
  • FIG. 3 conceptually illustrates a user device, which stores an electronic ticket and ticket token in memory, in accordance with an embodiment of the invention.
  • FIG. 4 conceptually illustrates a DRM server, which stores electronic tickets and ticket tokens in memory, in accordance with an embodiment of the invention.
  • DETAILED DISCLOSURE OF THE INVENTION
  • Turning now to the drawings, systems and methods for granting access to digital content using electronic tickets and ticket tokens are illustrated. In many embodiments, a user device can communicate with merchant servers, digital rights management (DRM) servers, and content servers to request access to and play back digital content. A user device may be configured with a web browser, web application, or other application that provides a user interface to a customer. The interface typically displays the digital content available from a merchant and is populated with data from the merchant server.
  • In many embodiments, a user device can purchase the right to access digital content from a merchant server. However, the user device obtains the cryptographic information used to access the purchased content directly from a DRM server. In several embodiments, a merchant server requests that the DRM server issue the right to access a piece of digital content to one of its customers. In response to the request, the DRM server generates an electronic ticket. The DRM server can also generate a ticket token associated with the electronic ticket at that time and/or when a user device requests playback of the content via the merchant website. The electronic ticket is evidence of the right of a user device registered with the DRM server to playback DRM protected content. The ticket token is a temporary credential that can be used to obtain the electronic ticket from the DRM server by a playback device that is registered with the DRM server and/or to obtain cryptographic information enabling playback of the content from the DRM server. In many instances the DRM server cannot authenticate the user device that is purchasing the content from the merchant server. The DRM server can provide the ticket token to the merchant server, which passes the ticket token to the user device used to purchase the content. Provided the user device or another user device onto which the token is loaded is registered with the DRM server, the user device can provide the ticket token to the DRM server and obtain the electronic ticket and any cryptographic information needed to access the purchased content. At which point, the user device can request the DRM protected content from the content server and commence playback using the cryptographic information. The use of electronic tickets, and ticket tokens to authenticate the right of a user device to playback digital content in accordance with embodiments of the invention is discussed further below.
  • System Architecture
  • A system including user devices that can communicate with merchant servers, DRM servers and content servers to access digital content in accordance with an embodiment of the invention is illustrated in FIG. 1. The system 10 includes a number of different types of user device 12 that each has the capability to request digital content over a network. The user devices 12 communicate with a merchant server 14, digital rights management (DRM) server 16 and content server 18 over a network such as the Internet 20. In a number of embodiments, merchant server 14 provides a “store front” like interface accessible to customers via a web browser or other application on their user device 12. The DRM server 16 can be used to authenticate user devices 12 and provide cryptographic information used to access digital content. In several embodiments, the content server 18 is a server that can deliver digital content to the user devices 12. The content can be downloaded and/or streamed by the user devices 12.
  • An electronic ticket issued by the DRM server in response to the purchase of content that serves as a representation of the purchase can be used to facilitate access of the purchased content in a coordinated fashion among the user device 12, merchant server 14, DRM server 16, and content server 18. In many embodiments, however, the merchant server 14 is unable to authenticate the user device 12 that purchased the content to the DRM server 16. Accordingly, the DRM server 16 issues a ticket token to the merchant server 14 that acts as a temporary credential. In several embodiments, the ticket token is a single use credential that can be utilized by a user device that authenticates itself to the DRM server to obtain the electronic ticket and/or cryptographic information enabling playback of the content. In a number of embodiments, the ticket token is generated when the user device requests playback of the content and expires within a predetermined period of time. In other embodiments, the ticket token, is generated when the user device purchases the content.
  • The merchant server 14 can provide the ticket token to the user device 12 that purchased the content. Provided the user device 12 is registered with the DRM server 16, the user device 12 can authenticate itself to the DRM server and exchange the ticket token for the electronic ticket that evidences the user device's right to access the purchased content. Where the user device 12 that purchased the content is not authorized to participate within the DRM system administered by the DRM server 16, the ticket token can be transferred to a device that is capable of participating within the DRM system. In embodiments where the DRM server registers user devices with user accounts, DRM system can provide an electronic ticket to a registered user device and can associate the electronic ticket with the user account to which the device is registered. In this way, other user devices registered to the user account can request access to the purchased content following the initial exchange of the ticket token for the electronic ticket. In instances where the user device has previously requested playback of the content, the user device can be in possession of the electronic ticket. When the user device again requests playback of the content via the merchant website (for example by streaming), the merchant can provide the electronic ticket to the DRM server to obtain a ticket token. The user device can then use the ticket token to access the content in the manner outlined above and the DRM server can authenticate that the electronic ticket provided by the merchant server is associated with the user device attempting to play back the content prior to providing cryptographic information enabling play back of the content to the user device.
  • Although a specific architecture is shown in FIG. 1 any of a variety of architectures can be utilized that enable user devices to securely access digital content using electronic tickets and ticket tokens in accordance with embodiments of the invention. For example, each of the servers illustrated in FIG. 1 can be a server system comprising multiple load balanced servers and/or servers that perform different functions. In addition, the functions of the servers illustrated in FIG. 1 can be combined and/or divided amongst different servers and server systems in accordance with embodiments of the invention. Electronic tickets, ticket tokens, and the use of tickets to access digital content in accordance with embodiments of the invention are discussed further below.
  • Electronic Tickets
  • An electronic ticket represents the purchased right to access a piece of digital content. Electronic tickets can also be used to represent the right to playback any DRM protected content including free content that is not capable of being freely distributed and content played back under a subscription agreement. Accordingly, references to purchased content can be considered to encompass more than just requests to access DRM protected content that involve a direct payment and can extend to any request for access to content. An electronic ticket can be a string, binary data, or other electronic representation of information that includes at least a unique identifier for the content with which the electronic ticket is associated.
  • Electronic tickets typically remain valid for the life of the purchase. When the purchase is a rental of the content, the ticket may be expired after the rental period. A ticket can initially be in a conceptually “untorn” state before it is used to access content. It is not yet associated with any particular user account and/or user device, and can be transferred from the purchaser to any other user, for instance as a gift. The electronic ticket may be “torn” and associated with a user account and/or user device that then holds the exclusive rights granted by that ticket. Whether a DRM system associates an electronic ticket with a user account or a user device can depend on whether the DRM system grants access rights on a device or user basis. Thereafter, that user account and/or user device is considered the owner or holder of the ticket. An electronic ticket may be torn, for example, when it is used for the first time to access content or in response to a user device exchanging a ticket token for an electronic ticket (see discussion below). An electronic ticket's torn or untorn status can be indicated by a variety of methods including (but not limited to) a field within the ticket or an associated field in a database where the ticket is stored.
  • An electronic ticket may be expressed in a variety of formats that can store the associated information. One suitable format is Extensible Markup Language (XML) defined in the XML 1.0 Specification by the World Wide Web Consortium (W3C) of Cambridge, Mass. and related specifications. XML specifies a textual data format for documents to be both human-readable and machine-readable.
  • In many embodiments of the invention, an electronic ticket may contain, reference, or be associated with some characteristics of the purchase it represents. Characteristics can include (but are limited to) the content that was purchased, the license describing how the content can be played (high definition or standard definition, rental or purchase, download or streaming, etc.), the purchase price, the merchant transaction identifier (ID), the customer who purchased the ticket, the customer owning the ticket if the ticket is torn. Cryptographic information that can be used to decode or decrypt the digital content may also be associated with a ticket. The characteristics or cryptographic information may be stored as part of the electronic ticket or the ticket may have a pointer or identifier to where the information may be found.
  • Ticket Token
  • A ticket token can be generated and associated with an electronic ticket as a temporary credential, which can be exchanged for an electronic ticket by a user device that is registered with a DRM system. In many embodiments, a merchant server requests a ticket token from a DRM server when a user request playback of content. In several embodiments, the merchant server requests a ticket token from the server when the user purchases content. The request may contain information such as (but not limited to) a content identifier, a merchant identifier, an account link identifier, a license identifier, a stream identifier, a transaction identifier, currency, and/or price. The ticket token that is returned may reference the electronic ticket, customer, and current content request. The first time the user device requests playback, the user device can exchange the ticket token for an electronic ticket. After the user device has obtained the electronic ticket, a further playback request can identify the electronic ticket and a DRM server can issue a ticket token that is used to authenticate that the user device attempting to playback the content is registered to the user account with which the electronic tickets is associated.
  • In several embodiments, the merchant server provides the ticket token to a user device only after the user device or a user account enabled on the user device is authenticated by the merchant server. The DRM server can issue the ticket token without authenticating the user device. The authentication occurs when the ticket token is used to request playback of the content and/or exchanged for the electronic ticket by a user device. In many embodiments, the DRM server may determine when a session is complete and expire the token, or expire the token after a certain amount of time has passed. Moreover, a token can typically only be used once. Methods for granting access to DRM protected content using electronic tickets and associated ticket tokens in accordance with embodiments of the invention are discussed further below.
  • Obtaining a Ticket and Ticket Token to Facilitate Playback
  • Typically a customer will buy or otherwise request access to digital content on a merchant's web site or through some other type of interface that shows the merchant's digital content offerings. The customer may use a personal computer with a web browser application, a user device with an on-screen interface, or other interactive user device to view the merchant's offerings. The customer typically has an account with the merchant and logs in using the account, or first creates a new account if there is no existing account. The purchased content can be viewed in the future (i.e., the associated electronic ticket is untorn) or immediately played back. In several embodiments, the content is streamed and/or viewed while it is being downloaded.
  • In many embodiments, the process of purchasing and playing back content involves a merchant obtaining a ticket token from a DRM server. A user device that obtains the ticket token can exchange it with the DRM server for an electronic ticket evidencing the user device's right to play back the purchased content and cryptographic information necessary to play back the purchased content. A process 100 for granting user devices with access to digital content purchased via a merchant using an electronic ticket and an associated electronic token in accordance with an embodiment of the invention is shown in FIG. 2.
  • A DRM server authenticates (102) a merchant server. Authentication may involve establishing a certain level of identification and trust between the merchant server and the DRM server and/or the DRM system to which the DRM server belongs.
  • A user device sends (104) a request for digital content to a merchant server.
  • The merchant server sends (106) a request for a ticket token to a DRM server. If it is a new purchase, an electronic ticket may not yet exist and the merchant server may also request that a new electronic ticket be created to represent the purchase. In several embodiments of the invention, the request may also include information to be associated with the purchase. The information may include (but is not limited to) a content identifier, merchant link identifier, account link identifier, license identifier, stream identifier, transaction identifier, currency, and/or price.
  • The DRM server generates (108) a ticket token and associates the token with the electronic ticket that represents the purchase. If it is a new purchase, the DRM server creates a new electronic ticket. If playback is requested of content that was previously purchased and played back by a user device registered to a user's account with the DRM server, the ticket token is associated with the existing electronic ticket. In various embodiments of the invention, the digital content may be transferring via a streaming protocol for immediate viewing or downloaded at a later time to be viewed in a disconnected playback mode (i.e., not in immediate communication with a server). If streamed immediately, the electronic ticket may be “torn” immediately. If the content is to be downloaded at a later time, the electronic ticket may be “untorn” and retain the ability to be transferred to another customer before being “torn” and associated with that customer's account. The electronic ticket may be stored on a user device, deleted from the device when playback is requested, and embedded in a container file with the content for disconnected playback as will be discussed further below.
  • The DRM server sends (110) the ticket token to the merchant server. If the merchant server does not yet have the electronic ticket (e.g., for a new purchase), the DRM server can also send the electronic ticket. In many embodiments, the merchant server stores the electronic ticket for future reference.
  • The merchant server sends (112) the ticket token to the user device.
  • The user device sends (114) the ticket token to the DRM server. In the communication with the DRM server, the user device may also send information about the customer and/or the device that identifies or describes the customer and/or device. For example, the user device may be authenticated with the DRM server. Authentication may include the device identifying itself as registered to a specific user account. The user account may be the same the account the consumer or user device holds with the merchant server, or (more typically) a separate account that the consumer or user device holds with the DRM system to which the DRM server belongs.
  • In many embodiments of the invention, the device may send information that identifies the brand and model of the device, or the graphics and audio capabilities of the device (e.g., high definition, multi-channel audio, MPEG4 decoding). The information can be used to help authenticate the device to the DRM system and determine the appropriate format of the content to provide to the device. Systems and processes for collecting information about a user device and representing the information using a device match data token include those disclosed in U.S. patent application Ser. No. 13/339,315 entitled “Binding of Cryptographic Content Using Unique Device Characteristics with Server Heuristics,” the disclosure of which is hereby incorporated by reference in its entirety.
  • The DRM server validates (116) the ticket token, e.g., by checking that the token has not yet been used and is not expired. The DRM server uses the ticket token to determine the electronic ticket to which it refers and customer information for the customer who sent the request.
  • The DRM server may associate (118) the electronic ticket with the customer's user account and register the user device to the user account if they are not already so registered, using the customer information associated with the ticket token and device match data it may have received from the user device.
  • In many embodiments of the invention, the DRM server may also verify the play request according to certain rules using the ticket token and/or a device match data token. For example, the DRM server may enforce concurrency and device rules on the playback of content. A concurrency rule may stipulate that only one device on the user account can play back any content at a time, or that a specific piece of content may only be played on one device at a time. Device rules may include limiting high definition content to user devices such as set-top boxes connected to television displays. A device match data token identifies the type of device so the DRM server can look up the device type to determine the appropriate format of content.
  • In many embodiments of the invention, the electronic ticket and/or the ticket token contain information to identify the license under which the content can be played. The DRM server can use the ticket information to retrieve the license information and generate or retrieve access information that the user device can use to access or decrypt the requested content. Access information can include (but is not limited to) a top level index file of the digital content, an identifier or location pointer for the digital content, and/or cryptographic data that can be used to access and/or decrypt the content. In several embodiments of the invention, a top level index file describes the location and content of container files containing streams of media that can be utilized by the playback device to stream and playback content. In adaptive bitrate streaming systems, the top level index file typically references the alternative streams that the playback device can switch between. Systems and methods for automatically generating top level index files for use in adaptive bitrate stream include those disclosed in U.S. patent application Ser. No. 13/341,789 entitled “Systems and Methods for Automatically Generating Top Level Index Files,” filed on Dec. 30, 2011, the disclosure of which is hereby incorporated by reference in its entirety.
  • The DRM server sends (120) the electronic ticket to the user device. In several embodiments, the electronic ticket embedded in another file. The ticket may be embedded in a file that also contains the content that was requested, e.g., in the header of a multimedia container file. In many embodiments, the DRM server also sends the access information that is used to access or play back the content that was requested. The DRM server invalidates the token by expiring (122) it.
  • Using the received electronic ticket and access information, the user device can play back the requested content via download or streaming. In many embodiments of the invention, the content is hosted on a content server that is accessible to the user device over a network. The user device may request the content from the content server. The content may be downloaded and played (124) during download or after downloading is complete, or streamed and played while being transferred to the user device. The user device may send a signal such as a “heartbeat” to the DRM server to let the server know that it is currently playing back content and/or the position in the file that is being played back. The DRM server can use this information for functions such as providing a resume feature so that the customer can stop playback and restart at the same position on the same or a different user device.
  • Although a specific process is illustrated in FIG. 2, any of a variety of processes for utilizing an electronic ticket and a ticket token that references the electronic ticket for providing a user device with access to purchased digital content can be utilized in accordance with embodiments of the invention.
  • Processes similar to the process illustrated in FIG. 2 may be implemented by configuring user devices and servers to exchange electronic tickets and ticket tokens. A generalized process 130 for using a user device to obtain access to digital content purchased via a merchant using an electronic ticket and an associated electronic token in accordance with an embodiment of the invention is shown in FIG. 2A. A customer uses a user device to purchase (132) content or request the playback of purchased content. The user device receives (134) a ticket token from a merchant server. The user device sends (136) the ticket token to a DRM server in a request for access to digital content. The user device receives (138) an electronic ticket that is referenced by or otherwise associated with the ticket token and access information for the digital content from the DRM server. Using the electronic ticket and access information, the user device receives and plays back (140) the requested content. In many embodiments of the invention, the content is hosted on a content server that is accessible to the user device over a network. Although a specific process is illustrated in FIG. 2A, any of a variety of processes for utilizing an electronic ticket and a ticket token that references the electronic ticket for providing a user device with access to purchased digital content can be utilized in accordance with embodiments of the invention.
  • A generalized process 150 for using a DRM server to provide a user device with access to digital content purchased via a merchant using an electronic ticket and an associated electronic token in accordance with an embodiment of the invention is shown in FIG. 2B. The DRM server authenticates (152) a merchant server. The DRM server receives (154) a request for a ticket token from a merchant server. The DRM server generates (156) a ticket token and associates the token with an electronic ticket. If there is no preexisting ticket (e.g., for a new purchase), the DRM server also creates the electronic ticket. The DRM server sends (158) the ticket token to the merchant server for delivery to a user device. The DRM server authenticates (160) a user device. The DRM server receives (162) the ticket token in a request for access to digital content from the user device and validates (164) the token. If user account information is provided, the DRM server associates (166) the electronic ticket with the user account. The DRM server sends (168) the electronic ticket referenced by or otherwise associated with the ticket token to the user device with access information for the digital content that was requested. The DRM server expires (170) the ticket token. Although a specific process is illustrated in FIG. 2B, any of a variety of processes for utilizing an electronic ticket and a ticket token that references the electronic ticket for providing a user device with access to purchased digital content can be utilized in accordance with embodiments of the invention. User devices and DRM servers that can utilize electronic tickets and ticket tokens in accordance with embodiments of the invention are discussed further below.
  • User Devices
  • In many embodiments of the invention, an electronic ticket is stored on a playback device to enable the user device to access content through a DRM system using the electronic ticket. A user device configured to access purchased content using electronic tickets in accordance with an embodiment of the invention is shown in FIG. 3. The playback device 30 includes a processor 32, memory 34, and a network interface 35. In the illustrated embodiment, the electronic tickets 36 and ticket tokens 38 can be stored in memory. Typically, the memory is non-volatile memory to provide persistent storage of the electronic tickets 36 and the ticket tokens 38. In a number of embodiments, the electronic ticket 38 may be contained inside a container file together with the content to which it refers. In several embodiments, a ticket may be stored on a purchaser's user device after purchase, may be transferred to another device if given as a gift, and may be deleted in its isolated form (i.e., outside a container file) from the device when it is torn. Tickets are typically treated this way in a disconnected playback mode. In several embodiments, a client application 39 configures the user device to communicate with the merchant server to purchase content and obtain ticket tokens. The client application 39 also configures the user device to authentic itself with a DRM server and to request cryptographic information to play back content using a ticket token and/or exchange the ticket token for an electronic ticket. Although a specific user device architecture is illustrated in FIG. 3, any of a variety of architectures that are capable of managing interactions with servers and playback of digital content in the manner outlined above can be utilized in accordance with embodiments of the invention can
  • DRM Servers
  • In many embodiments of the invention, electronic tickets and ticket tokens may be stored on a merchant server or a DRM server (e.g., in a database) for reference, to track purchases, and to provide user devices with access to content. A merchant or DRM server may look up an electronic ticket using fields such as (but not limited to) a customer email address, merchant identifier, content identifier, or merchant transaction identifier. A DRM server configured to issue electronic tickets and ticket tokens and to provide cryptographic information enabling playback of DRM protected content in accordance with an embodiment of the invention is shown in FIG. 4. The DRM server includes a processor 52 and memory 54. In the illustrated embodiment, the memory 54 includes multiple electronic tickets 56 and ticket tokens 58. As is discussed above, the DRM server can be configured by DRM server application software 59 to manage the generation of electronic tickets, the issuance of ticket tokens associated with the electronic tickets, and the association of electronic tickets with users and/or user devices. In addition, the DRM server application software 59 can manage the issuance of cryptographic information (not shown) to playback devices that are authorized to playback content, the authorization of which is evidenced by an electronic ticket.
  • Although the description above contains many specificities, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments of the invention. Various other embodiments are possible within its scope. Accordingly, the scope of the invention should be determined not by the embodiments illustrated, but by the appended claims and their equivalents.

Claims (29)

What is claimed is:
1. A digital rights management server, comprising:
a processor; and
memory configured to store:
an electronic ticket,
a ticket token;
wherein the processor is configured to:
authenticate a merchant server;
receive a request for a ticket token from the merchant server where the request identifies a piece of digital content;
generate a ticket token that expires after a predetermined time period;
associate the ticket token with an electronic ticket;
send the ticket token to the merchant server for delivery to a user device,
receive a request to access the identified piece of digital content from the user device, where the request includes the ticket token;
send the electronic ticket and access information for the identified piece of digital content associated with the electronic ticket to the user device; and
expire the ticket token.
2. The digital rights management server of claim 1, wherein the processor is further configured to authenticate a user device registered to a user account and associate an electronic ticket with the user account based upon the ticket token received from the user device.
3. The digital rights management server of claim 1, wherein the request for a ticket token contains at least one field selected from the group consisting of: a customer identifier, a content identifier, a merchant identifier, an account link identifier, a license identifier, a stream identifier, a transaction identifier, and a price.
4. The digital rights management server of claim 1, wherein the processor is further configured to generate a new electronic ticket to represent a new purchase.
5. The digital rights management server of claim 1, wherein the processor is further configured to send the electronic ticket to the merchant server.
6. The digital rights management server of claim 1, wherein the request to access the identified piece of digital content further includes identification of a user account to which the user device is registered.
7. The digital rights management server of claim 6, wherein the processor is further configured to associate the electronic ticket with the user account.
8. The digital rights management server of claim 6, wherein the processor is further configured to associate the user device with the user account.
9. The digital rights management server of claim 1, wherein the request to access the identified piece of digital content further includes information that identifies the characteristics or capabilities of the user device.
10. The digital rights management server of claim 1, wherein the processor is further configured to validate the ticket token.
11. The digital rights management server of claim 1, wherein the processor is further configured to enforce rules on the playback of content based upon the ticket token.
12. The digital rights management server of claim 1, wherein the processor is further configured to enforce rules on the playback of content based upon device characteristics.
13. The digital rights management server of claim 1, wherein the access information includes at least one piece of information selected from the group consisting of: a top level index of the digital content, an identifier for the digital content, and cryptographic data that can be used to access the digital content.
14. A method for enabling playback of digital content on a user device using an electronic ticket and an ticket token, the method comprising:
authenticating a merchant server using a DRM server;
receiving a request for a ticket token from the merchant server at the DRM server, where the request identifies a piece of digital content;
generating a ticket token that expires after a predetermined time period using the DRM server;
associating the ticket token with an electronic ticket using the DRM server;
sending the ticket token to the merchant server for delivery to a user device using the DRM server;
authenticating a user device registered to a user account using the DRM server;
receiving a request to access the identified piece of digital content from the user device using the DRM server, where the request includes the ticket token;
associating an electronic ticket with the user account based upon the ticket token received from the user device using the DRM server;
sending the electronic ticket and access information for the identified piece of digital content associated with the electronic ticket to the user device using the DRM server; and
expiring the ticket token using the DRM server.
15. The method of claim 14, further comprising authenticating a user device registered to a user account and associating an electronic ticket with the user account based upon the ticket token received from the user device.
16. The method of claim 14, wherein the request for a ticket token contains at least one field selected from the group consisting of: a customer identifier, a content identifier, a merchant identifier, an account link identifier, a license identifier, a stream identifier, a transaction identifier, and a price.
17. The method of claim 14, further comprising generating a new electronic ticket to represent a new purchase.
18. The method of claim 14, further comprising sending the electronic ticket to the merchant server.
19. The method of claim 14, wherein the request to access the identified piece of digital content further includes identification of a user account to which the user device is registered.
20. The method of claim 19, further comprising associating the electronic ticket with the user account.
21. The method of claim 19, further comprising associating the user device with the user account.
22. The method of claim 14, wherein the request to access the identified piece of digital content further includes information that identifies the characteristics or capabilities of the user device.
23. The method of claim 14, further comprising validating the ticket token.
24. The method of claim 14, further comprising enforcing rules on the playback of content based upon the ticket token.
25. The method of claim 14, further comprising enforcing rules on the playback of content based upon device characteristics.
26. The method of claim 14, wherein the access information includes at least one piece of information selected from the group consisting of: a top level index of the digital content, an identifier for the digital content, and cryptographic data that can be used to access the digital content.
27. A system comprising:
a merchant server;
a DRM server;
a content server; and
a user device;
wherein the merchant server, DRM server, content server, and user device are configured to communicate via a network;
wherein the merchant server is configured to authenticate a user account maintained by the merchant server;
wherein the user device is configured to request a piece of digital content from the merchant server;
wherein the DRM server is configured to authenticate the merchant server;
wherein the merchant server is configured to request a ticket token associated with the requested piece of content from the DRM;
wherein the merchant server is configured to provide the ticket token to the user device;
wherein the DRM server is configured to authenticate the user device as being registered to a user account maintained by the DRM server;
wherein the user device is configured to provide the ticket token to the DRM server;
wherein the DRM server is configured to associate an electronic ticket with the user account to which the user device is registered; and
wherein the DRM server is configured to provide the user device with access information for the requested digital content and the electronic ticket.
28. A method for enabling playback of digital content on a user device using an electronic ticket and an ticket token, the method comprising:
authenticating a user account maintained by a merchant server using the merchant server;
requesting a piece of digital content from the merchant server using a user device;
authenticating the merchant server using a DRM server;
requesting a ticket token associated with the requested piece of content from the DRM server using the merchant server;
providing the ticket token to the user device using the merchant server;
authenticating the user device as being registered to a user account maintained by the DRM server using the DRM server;
providing the ticket token to the DRM server using the user device;
associating an electronic ticket with the user account to which the user device is registered using the DRM server; and
providing the user device with the electronic ticket and access information for the requested digital content using the DRM server.
29. A machine readable medium containing processor instructions, where execution of the instructions by a processor causes the processor to perform a process comprising:
authenticating a merchant server;
receiving a request for a ticket token from the merchant server where the request identifies a piece of digital content;
generating a ticket token that expires after a predetermined time period;
associating the ticket token with an electronic ticket;
sending the ticket token to the merchant server for delivery to a user device;
authenticating a user device registered to a user account;
receiving a request to access the identified piece of digital content from the user device, where the request includes the ticket token;
associating an electronic ticket with the user account based upon the ticket token received from the user device;
sending the electronic ticket and access information for the identified piece of digital content associated with the electronic ticket to the user device; and
expiring the ticket token.
US13/436,917 2012-01-06 2012-03-31 Systems and methods for granting access to digital content using electronic tickets and ticket tokens Abandoned US20130179199A1 (en)

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US13/436,917 US20130179199A1 (en) 2012-01-06 2012-03-31 Systems and methods for granting access to digital content using electronic tickets and ticket tokens

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US13/436,917 US20130179199A1 (en) 2012-01-06 2012-03-31 Systems and methods for granting access to digital content using electronic tickets and ticket tokens
EP13733630.1A EP2801048A4 (en) 2012-01-06 2013-01-07 Systems and methods for accessing digital content using electronic tickets and ticket tokens
KR1020147021418A KR101707435B1 (en) 2012-01-06 2013-01-07 Using electronic tickets Ticket and token systems and methods for accessing digital content
JP2014551398A JP5837234B2 (en) 2012-01-06 2013-01-07 System and method for accessing digital content using an electronic ticket and ticket token
PCT/US2013/020572 WO2013103986A2 (en) 2012-01-06 2013-01-07 Systems and methods for accessing digital content using electronic tickets and ticket tokens
CN201380008359.7A CN104508648B (en) 2012-01-06 2013-01-07 System and method for using an electronic ticket and ticket token access to digital content
HK14112526.2A HK1199120A1 (en) 2012-01-06 2014-12-12 Systems and methods for accessing digital content using electronic tickets and ticket tokens

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US13/436,900 Active US8918908B2 (en) 2012-01-06 2012-03-31 Systems and methods for accessing digital content using electronic tickets and ticket tokens
US14/567,994 Active US9626490B2 (en) 2012-01-06 2014-12-11 Systems and methods for enabling playback of digital content using electronic tickets and ticket tokens representing grant of access rights
US15/484,534 Active US10289811B2 (en) 2012-01-06 2017-04-11 Systems and methods for enabling playback of digital content using status associable electronic tickets and ticket tokens representing grant of access rights

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US15/484,534 Active US10289811B2 (en) 2012-01-06 2017-04-11 Systems and methods for enabling playback of digital content using status associable electronic tickets and ticket tokens representing grant of access rights

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140165209A1 (en) * 2012-12-11 2014-06-12 Verizon Patent And Licensing Inc. Digital content delivery platform for multiple retailers
US8850216B1 (en) * 2011-05-19 2014-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Client device and media client authentication mechanism
US8918908B2 (en) 2012-01-06 2014-12-23 Sonic Ip, Inc. Systems and methods for accessing digital content using electronic tickets and ticket tokens
EP2846555A1 (en) * 2013-09-10 2015-03-11 Netflix, Inc. Streaming media content
US20150074785A1 (en) * 2013-09-09 2015-03-12 International Business Machines Corporation Using service request ticket for multi-factor authentication
US8997254B2 (en) 2012-09-28 2015-03-31 Sonic Ip, Inc. Systems and methods for fast startup streaming of encrypted multimedia content
US9202076B1 (en) * 2013-07-26 2015-12-01 Symantec Corporation Systems and methods for sharing data stored on secure third-party storage platforms
US20160197971A1 (en) * 2015-01-06 2016-07-07 Sonic Ip, Inc. Systems and Methods for Encoding and Sharing Content between Devices
US9621522B2 (en) 2011-09-01 2017-04-11 Sonic Ip, Inc. Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
US9712890B2 (en) 2013-05-30 2017-07-18 Sonic Ip, Inc. Network video streaming with trick play based on separate trick play files
EP3039562A4 (en) * 2013-08-30 2017-08-02 D&M Holdings, Inc. Network device, system and method for rendering an interactive multimedia playlist
US9798865B2 (en) 2014-06-02 2017-10-24 Sonic Ip, Inc. Systems and methods for binding content playback to the pairing of a playback device and removable memory storage device
US9866878B2 (en) 2014-04-05 2018-01-09 Sonic Ip, Inc. Systems and methods for encoding and playing back video at different frame rates using enhancement layers
US9883204B2 (en) 2011-01-05 2018-01-30 Sonic Ip, Inc. Systems and methods for encoding source media in matroska container files for adaptive bitrate streaming using hypertext transfer protocol
US9967305B2 (en) 2013-06-28 2018-05-08 Divx, Llc Systems, methods, and media for streaming media content
US10212486B2 (en) 2009-12-04 2019-02-19 Divx, Llc Elementary bitstream cryptographic material transport systems and methods
US10225299B2 (en) 2012-12-31 2019-03-05 Divx, Llc Systems, methods, and media for controlling delivery of content
US10264255B2 (en) 2013-03-15 2019-04-16 Divx, Llc Systems, methods, and media for transcoding video data
US10368096B2 (en) 2018-10-09 2019-07-30 Divx, Llc Adaptive streaming systems and methods for performing trick play

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9167042B1 (en) * 2012-09-10 2015-10-20 Amazon Technologies, Inc. Maintaining communication channel for device notifications
CN104581341B (en) * 2013-10-24 2018-05-29 华为终端有限公司 Subtitles subtitles display device and display method
US20150242597A1 (en) * 2014-02-24 2015-08-27 Google Inc. Transferring authorization from an authenticated device to an unauthenticated device
US10104065B2 (en) * 2015-05-26 2018-10-16 Futurewei Technologies, Inc. Token-based authentication and authorization information signaling and exchange for adaptive streaming
JP6285474B2 (en) * 2016-01-28 2018-02-28 ヤフー株式会社 Management device, management method, program, terminal apparatus, and control method
US10298649B2 (en) 2017-02-15 2019-05-21 Microsoft Technology Licensing, Llc Guaranteeing stream exclusivity in a multi-tenant environment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6236971B1 (en) * 1994-11-23 2001-05-22 Contentguard Holdings, Inc. System for controlling the distribution and use of digital works using digital tickets
US20040039916A1 (en) * 2002-05-10 2004-02-26 David Aldis System and method for multi-tiered license management and distribution using networked clearinghouses
US20070100757A1 (en) * 1999-05-19 2007-05-03 Rhoads Geoffrey B Content Protection Arrangements
US20100138903A1 (en) * 2008-12-03 2010-06-03 General Instrument Corporation Ticket-Based Implementation of Content Leasing

Family Cites Families (162)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3236015B2 (en) 1990-10-09 2001-12-04 キヤノン株式会社 Information processing apparatus and method
US5404436A (en) 1991-11-27 1995-04-04 Digital Equipment Corporation Computer method and apparatus for converting compressed characters for display in full size
US20050149450A1 (en) 1994-11-23 2005-07-07 Contentguard Holdings, Inc. System, method, and device for controlling distribution and use of digital works based on a usage rights grammar
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
US6031622A (en) 1996-05-16 2000-02-29 Agfa Corporation Method and apparatus for font compression and decompression
KR19990042668A (en) 1997-11-27 1999-06-15 정선종 Video encoding apparatus and method for multiple video transmission
US6141754A (en) 1997-11-28 2000-10-31 International Business Machines Corporation Integrated method and system for controlling information access and distribution
JP3394899B2 (en) 1998-01-23 2003-04-07 株式会社東芝 Audio data recording medium and a data processing apparatus and method
US6859496B1 (en) 1998-05-29 2005-02-22 International Business Machines Corporation Adaptively encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channel
WO1999065239A2 (en) 1998-06-11 1999-12-16 Koninklijke Philips Electronics N.V. Trick play signal generation for a digital video recorder
US6226618B1 (en) * 1998-08-13 2001-05-01 International Business Machines Corporation Electronic content delivery system
EP1030257B1 (en) 1999-02-17 2011-11-02 Nippon Telegraph And Telephone Corporation Original data circulation method, system, apparatus, and computer readable medium
US20050210101A1 (en) * 1999-03-04 2005-09-22 Universal Electronics Inc. System and method for providing content, management, and interactivity for client devices
US6658056B1 (en) 1999-03-30 2003-12-02 Sony Corporation Digital video decoding, buffering and frame-rate converting method and apparatus
US20050182828A1 (en) 1999-04-21 2005-08-18 Interactual Technologies, Inc. Platform specific execution
US6549935B1 (en) * 1999-05-25 2003-04-15 Silverbrook Research Pty Ltd Method of distributing documents having common components to a plurality of destinations
US6807306B1 (en) 1999-05-28 2004-10-19 Xerox Corporation Time-constrained keyframe selection method
US7133598B1 (en) 1999-08-20 2006-11-07 Thomson Licensing Method for converting packetized video data and corresponding navigation data into a second data format
CA2388606C (en) 1999-10-27 2009-12-29 Diva Systems Corporation Picture-in-picture and multiple video streams using slice-based encoding
US6996720B1 (en) 1999-12-17 2006-02-07 Microsoft Corporation System and method for accessing protected content in a rights-management architecture
JP4310879B2 (en) * 2000-02-23 2009-08-12 ソニー株式会社 Content reproduction system and a content reproducing method, and content playback requesting apparatus and the temporary playback apparatus
EP1143658A1 (en) 2000-04-03 2001-10-10 Canal+ Technologies Société Anonyme Authentication of data transmitted in a digital transmission system
US20040125957A1 (en) * 2000-04-11 2004-07-01 Ty Rauber Method and system for secure distribution
JP4552294B2 (en) 2000-08-31 2010-09-29 ソニー株式会社 Content distribution system, a content distribution method, and an information processing apparatus, and program providing medium
US7242772B1 (en) 2000-09-07 2007-07-10 Eastman Kodak Company Encryption apparatus and method for synchronizing multiple encryption keys with a data stream
AU1986002A (en) 2000-11-10 2002-06-11 Full Audio Corp Digital content distribution and subscription system
US20070136817A1 (en) 2000-12-07 2007-06-14 Igt Wager game license management in a peer gaming network
US20030002578A1 (en) 2000-12-11 2003-01-02 Ikuo Tsukagoshi System and method for timeshifting the encoding/decoding of audio/visual signals in real-time
SE0101295D0 (en) 2001-04-10 2001-04-10 Ericsson Telefon Ab L M A method and network for delivering streaming data
US6824051B2 (en) * 2001-06-07 2004-11-30 Contentguard Holdings, Inc. Protected content distribution system
US7421411B2 (en) * 2001-07-06 2008-09-02 Nokia Corporation Digital rights management in a mobile communications environment
JP4177040B2 (en) * 2001-07-17 2008-11-05 松下電器産業株式会社 Content using apparatus and a network system and license information acquisition method
US7191216B2 (en) * 2001-10-03 2007-03-13 Nokia Corporation System and method for controlling access to downloadable resources
US6947910B2 (en) * 2001-10-09 2005-09-20 E-Cast, Inc. Secure ticketing
US20030236836A1 (en) 2002-03-21 2003-12-25 Borthwick Ernest Mark System and method for the design and sharing of rich media productions via a computer network
JP2003330896A (en) * 2002-05-13 2003-11-21 Sony Corp Device, method, and system for information processing, recording medium, and program
US20040019801A1 (en) * 2002-05-17 2004-01-29 Fredrik Lindholm Secure content sharing in digital rights management
US7155109B2 (en) 2002-06-14 2006-12-26 Microsoft Corporation Programmable video recorder having flexible trick play
US7644172B2 (en) 2002-06-24 2010-01-05 Microsoft Corporation Communicating via a connection between a streaming server and a client without breaking the connection
US9445133B2 (en) 2002-07-10 2016-09-13 Arris Enterprises, Inc. DVD conversion for on demand
US20040103064A1 (en) * 2002-11-26 2004-05-27 Thomas Howard Models for marketing and selling access to on-line content
US7370212B2 (en) * 2003-02-25 2008-05-06 Microsoft Corporation Issuing a publisher use license off-line in a digital rights management (DRM) system
EP1618478A4 (en) * 2003-03-13 2007-10-03 Drm Technologies L L C Secure streaming container
KR100553885B1 (en) 2003-03-13 2006-02-24 삼성전자주식회사 Method for managing multimedia contents made with SMIL and SMIL file system thereof
US20040225751A1 (en) * 2003-04-25 2004-11-11 Urali Prem S. Systems and methods to facilitate e-business transactions through distributed systems
WO2004102571A1 (en) 2003-05-16 2004-11-25 Koninklijke Philips Electronics N.V. Method of recording and of replaying and video recording and replay systems
ES2279082T3 (en) * 2003-09-03 2007-08-16 France Telecom System and method for distributing content access data.
US20050070257A1 (en) * 2003-09-30 2005-03-31 Nokia Corporation Active ticket with dynamic characteristic such as appearance with various validation options
US7979886B2 (en) 2003-10-17 2011-07-12 Telefonaktiebolaget Lm Ericsson (Publ) Container format for multimedia presentations
US7882034B2 (en) 2003-11-21 2011-02-01 Realnetworks, Inc. Digital rights management for content rendering on playback devices
US8472792B2 (en) 2003-12-08 2013-06-25 Divx, Llc Multimedia distribution system
US7900140B2 (en) 2003-12-08 2011-03-01 Microsoft Corporation Media processing methods, systems and application program interfaces
US7519274B2 (en) 2003-12-08 2009-04-14 Divx, Inc. File format for multiple track digital data
JP4118232B2 (en) 2003-12-19 2008-07-16 三菱電機株式会社 Video data processing method and a video data processing apparatus
US7512658B2 (en) 2004-02-26 2009-03-31 International Business Machines Corporation Providing a portion of an electronic mail message based upon a transfer rate, a message size, and a file format
EP1746825B1 (en) 2004-04-16 2011-06-08 Panasonic Corporation Recording medium, reproduction device, program
US7299406B2 (en) 2004-06-02 2007-11-20 Research In Motion Limited Representing spreadsheet document content
GB0413261D0 (en) 2004-06-15 2004-07-14 Ibm Method and arrangement for front building
EP1968065B1 (en) 2004-06-18 2011-12-14 Panasonic Corporation Recording medium, reproduction system and recording method
JP4806349B2 (en) * 2004-07-20 2011-11-02 パナソニック株式会社 Reproduction control apparatus, the reproduction control method and the reproduction control system
CN100592789C (en) 2004-08-12 2010-02-24 皇家飞利浦电子股份有限公司 Selection of content from a stream of video or audio data
US8054880B2 (en) 2004-12-10 2011-11-08 Tut Systems, Inc. Parallel rate control for digital video encoder with multi-processor architecture and picture-based look-ahead window
WO2006078594A1 (en) 2005-01-19 2006-07-27 Thomson Licensing Method and apparatus for real time parallel encoding
DE102005004941B4 (en) 2005-02-02 2006-12-21 Avt Audio Vision Technology Gmbh Conversion of data, particularly for the reproduction of audio and / or video information
CA2605558A1 (en) 2005-04-20 2006-11-23 Videoegg, Inc. Browser enabled video manipulation
US8825551B2 (en) * 2005-04-21 2014-09-02 Google Technology Holdings LLC Digital rights management for local recording and home network distribution
US7478325B2 (en) 2005-04-22 2009-01-13 Microsoft Corporation Methods for providing an accurate visual rendition of a text element formatted with an unavailable font
JP4356645B2 (en) 2005-04-28 2009-11-04 ソニー株式会社 The subtitle generation apparatus and method
DE102005022834A1 (en) 2005-05-11 2006-11-16 Deutsche Telekom Ag Procedures for disseminating covered with DRM digital content
US9209934B2 (en) 2006-06-09 2015-12-08 Qualcomm Incorporated Enhanced block-request streaming using cooperative parallel HTTP and forward error correction
CA2513016A1 (en) 2005-07-22 2007-01-22 Research In Motion Limited A secure method of synchronizing cache contents of a mobile browser with a proxy server
KR100747451B1 (en) * 2005-08-26 2007-08-09 엘지전자 주식회사 Apparatus and method for digital rights management
JP2007065928A (en) 2005-08-30 2007-03-15 Toshiba Corp Information storage medium, information processing method, information transfer method, information reproduction method, information reproduction device, information recording method, information recording device, and program
US8522290B2 (en) 2005-10-07 2013-08-27 Infosys Technologies, Ltd. Video on demand system and methods thereof
US20070086528A1 (en) 2005-10-18 2007-04-19 Mauchly J W Video encoder with multiple processors
FR2892885B1 (en) 2005-11-02 2008-01-25 Streamezzo Sa character font management Method in the interior scenes multimedia, computer program and corresponding terminal.
US8949146B2 (en) * 2005-12-31 2015-02-03 Michelle Fisher Method for purchasing tickets using a mobile communication device
EP1806919A1 (en) 2006-01-05 2007-07-11 Alcatel Lucent Media delivery system with content-based trick play mode
US8214516B2 (en) 2006-01-06 2012-07-03 Google Inc. Dynamic media serving infrastructure
JP4826270B2 (en) * 2006-02-03 2011-11-30 富士ゼロックス株式会社 Electronic ticketing management system, issuing system, program
US7515710B2 (en) * 2006-03-14 2009-04-07 Divx, Inc. Federated digital rights management scheme including trusted systems
US20070239839A1 (en) 2006-04-06 2007-10-11 Buday Michael E Method for multimedia review synchronization
US20100017501A1 (en) * 2006-05-02 2010-01-21 Broadon Communications Corp. Content management and method
US7836511B2 (en) * 2006-06-14 2010-11-16 Microsoft Corporation Enforcing advertisement playback for downloaded media content
KR101013686B1 (en) 2006-06-29 2011-02-10 엘지전자 주식회사 Method and system for managing devices in user domain in digital rights management
US20080066181A1 (en) 2006-09-07 2008-03-13 Microsoft Corporation DRM aspects of peer-to-peer digital content distribution
US8270819B2 (en) 2006-10-31 2012-09-18 Tivo Inc. Performing trick play functions in a digital video recorder with efficient use of resources
US8711929B2 (en) 2006-11-01 2014-04-29 Skyfire Labs, Inc. Network-based dynamic encoding
US20080109911A1 (en) * 2006-11-03 2008-05-08 Microsoft Corporation Send/Lend Business Rights
JP4609773B2 (en) 2006-11-28 2011-01-12 コニカミノルタビジネステクノロジーズ株式会社 Document data creation device and the document data creation method and control program
US9124650B2 (en) 2006-12-13 2015-09-01 Quickplay Media Inc. Digital rights management in a mobile environment
AR064274A1 (en) 2006-12-14 2009-03-25 Panasonic Corp Method of encoding moving image coding device moving image recording method of moving image recording medium, method of reproducing moving image playback device moving image and playback system
JP2008159179A (en) * 2006-12-25 2008-07-10 Sony Corp Player and playback method
US9826197B2 (en) 2007-01-12 2017-11-21 Activevideo Networks, Inc. Providing television broadcasts over a managed network and interactive content over an unmanaged network to a client device
US7921221B2 (en) 2007-01-22 2011-04-05 Minborg Invent I Goteborg Ab Method and apparatus for obtaining digital objects in a communication network
US20080192818A1 (en) 2007-02-09 2008-08-14 Dipietro Donald Vincent Systems and methods for securing media
JP4548441B2 (en) * 2007-04-11 2010-09-22 日本電気株式会社 Content usage system, and content usage
US20080279535A1 (en) 2007-05-10 2008-11-13 Microsoft Corporation Subtitle data customization and exposure
US7558760B2 (en) 2007-06-12 2009-07-07 Microsoft Corporation Real-time key frame generation
KR20090004659A (en) 2007-07-02 2009-01-12 엘지전자 주식회사 Digital broadcasting system and method of processing data in digital broadcasting system
US8321556B1 (en) 2007-07-09 2012-11-27 The Nielsen Company (Us), Llc Method and system for collecting data on a wireless device
US9602757B2 (en) 2007-09-04 2017-03-21 Apple Inc. Display of video subtitles
KR101058042B1 (en) 2007-09-06 2011-08-19 삼성전자주식회사 Multi-stream reproducing apparatus and a reproducing method
US8023562B2 (en) 2007-09-07 2011-09-20 Vanguard Software Solutions, Inc. Real-time video coding/decoding
US8046453B2 (en) 2007-09-20 2011-10-25 Qurio Holdings, Inc. Illustration supported P2P media content streaming
EP3511841A1 (en) * 2007-11-16 2019-07-17 Sonic IP, Inc. Chunk header incorporating binary flags and correlated variable-length fields
WO2009065137A1 (en) 2007-11-16 2009-05-22 Divx, Inc. Hierarchical and reduced index structures for multimedia files
WO2009075766A2 (en) 2007-12-05 2009-06-18 Swarmcast, Inc. Dynamic bit rate scaling
US8997161B2 (en) 2008-01-02 2015-03-31 Sonic Ip, Inc. Application enhancement tracks
US8776161B2 (en) 2008-02-12 2014-07-08 Ciena Corporation Systems and methods for video processing in network edge devices
US8456380B2 (en) 2008-05-15 2013-06-04 International Business Machines Corporation Processing computer graphics generated by a remote computer for streaming to a client computer
WO2009149442A1 (en) 2008-06-06 2009-12-10 Divx, Inc. Systems and methods for font file optimization for multimedia files
US7991801B2 (en) 2008-06-10 2011-08-02 International Business Machines Corporation Real-time dynamic and synchronized captioning system and method for use in the streaming of multimedia data
US20090313564A1 (en) 2008-06-12 2009-12-17 Apple Inc. Systems and methods for adjusting playback of media files based on previous usage
US8527876B2 (en) 2008-06-12 2013-09-03 Apple Inc. System and methods for adjusting graphical representations of media files based on previous usage
US8352996B2 (en) 2008-06-27 2013-01-08 Microsoft Corporation Adaptive video switching for variable network conditions
US20100083322A1 (en) 2008-09-29 2010-04-01 Alan Rouse Providing selective video program content and associated license in response to a promotion token
US8051287B2 (en) 2008-10-15 2011-11-01 Adobe Systems Incorporated Imparting real-time priority-based network communications in an encrypted communication session
US20100095015A1 (en) 2008-10-15 2010-04-15 Patentvc Ltd. Methods and systems for bandwidth amplification using replicated fragments
US8631145B2 (en) * 2008-10-31 2014-01-14 Sonic Ip, Inc. System and method for playing content on certified devices
US8249168B2 (en) 2008-11-06 2012-08-21 Advanced Micro Devices, Inc. Multi-instance video encoder
CN102282804B (en) 2008-11-24 2015-08-12 瞻博网络公司 Adaptive network content delivery system
US9015209B2 (en) 2008-12-16 2015-04-21 Sandisk Il Ltd. Download management of discardable files
US8396114B2 (en) 2009-01-29 2013-03-12 Microsoft Corporation Multiple bit rate video encoding using variable bit rate and dynamic resolution for adaptive video streaming
US8311115B2 (en) 2009-01-29 2012-11-13 Microsoft Corporation Video encoding using previously calculated motion information
US8621044B2 (en) 2009-03-16 2013-12-31 Microsoft Corporation Smooth, stateless client media streaming
EP2237182A1 (en) 2009-03-31 2010-10-06 Sony DADC Austria AG Method, system, license server for providing a license to a user for accessing a protected content on a user device and software module
EP2422514A1 (en) 2009-04-20 2012-02-29 Koninklijke Philips Electronics N.V. Verification and synchronization of files obtained separately from a video content
US8270473B2 (en) 2009-06-12 2012-09-18 Microsoft Corporation Motion based dynamic resolution multiple bit rate video encoding
US8225061B2 (en) 2009-07-02 2012-07-17 Apple Inc. Method and apparatus for protected content data processing
US20110029999A1 (en) * 2009-07-29 2011-02-03 Telefonaktiebolaget Lm Ericsson (Publ) Policies transfer for session transfer
US8412841B1 (en) 2009-08-17 2013-04-02 Adobe Systems Incorporated Media content streaming using stream message fragments
US8355433B2 (en) 2009-08-18 2013-01-15 Netflix, Inc. Encoding video streams for adaptive video streaming
KR20120080214A (en) 2009-09-29 2012-07-16 노키아 코포레이션 System, method and apparatus for dynamic media file streaming
CN102034177A (en) * 2009-09-29 2011-04-27 国际商业机器公司 Method and device for realizing effective mobile ticket transfer
US8341255B2 (en) 2009-10-06 2012-12-25 Unwired Planet, Inc. Managing network traffic by editing a manifest file
US9237387B2 (en) 2009-10-06 2016-01-12 Microsoft Technology Licensing, Llc Low latency cacheable media streaming
US9164967B2 (en) 2009-11-25 2015-10-20 Red Hat, Inc. Extracting font metadata from font files into searchable metadata for package distribution
US8625667B2 (en) 2009-11-30 2014-01-07 Alcatel Lucent Method of opportunity-based transmission of wireless video
KR20110066578A (en) 2009-12-11 2011-06-17 삼성전자주식회사 Digital contents, apparatus and method for playing the digital contents
US9344735B2 (en) 2009-12-21 2016-05-17 Tmm, Inc. Progressive shape based encoding of video content within a swarm environment
MX326131B (en) 2010-01-07 2014-09-15 Divx Llc
EP2360924A1 (en) 2010-01-18 2011-08-24 Alcatel-Lucent España, S.A. A digital multimedia data transmission device and method
US8386621B2 (en) 2010-03-12 2013-02-26 Netflix, Inc. Parallel streaming
KR101837687B1 (en) 2010-06-04 2018-03-12 삼성전자주식회사 Method and apparatus for adaptive streaming based on plurality of elements determining quality of content
US8705616B2 (en) 2010-06-11 2014-04-22 Microsoft Corporation Parallel multiple bitrate video encoding to reduce latency and dependences between groups of pictures
US8782268B2 (en) 2010-07-20 2014-07-15 Microsoft Corporation Dynamic composition of media
US9998749B2 (en) 2010-10-19 2018-06-12 Otoy, Inc. Composite video streaming using stateless compression
US8910295B2 (en) 2010-11-30 2014-12-09 Comcast Cable Communications, Llc Secure content access authorization
WO2012094171A1 (en) 2011-01-05 2012-07-12 Divx, Llc. Adaptive bitrate streaming of media stored in matroska container files using hypertext transfer protocol
US9247312B2 (en) 2011-01-05 2016-01-26 Sonic Ip, Inc. Systems and methods for encoding source media in matroska container files for adaptive bitrate streaming using hypertext transfer protocol
EP2515262A1 (en) * 2011-04-18 2012-10-24 Amadeus S.A.S. De-synchronization monitoring system and method
US8516144B2 (en) 2011-04-29 2013-08-20 Cbs Interactive Inc. Startup bitrate in adaptive bitrate streaming
JP2011233153A (en) * 2011-06-14 2011-11-17 Fuji Soft Inc Content distribution system
US9032497B2 (en) * 2011-06-15 2015-05-12 Cbs Interactive Inc. System and method for securing embedded media
US9721071B2 (en) 2011-06-29 2017-08-01 Sonic Ip, Inc. Binding of cryptographic content using unique device characteristics with server heuristics
US8787570B2 (en) * 2011-08-31 2014-07-22 Sonic Ip, Inc. Systems and methods for automatically genenrating top level index files
US8909922B2 (en) 2011-09-01 2014-12-09 Sonic Ip, Inc. Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
US8806193B2 (en) 2011-12-22 2014-08-12 Adobe Systems Incorporated Methods and apparatus for integrating digital rights management (DRM) systems with native HTTP live streaming
US20130179199A1 (en) 2012-01-06 2013-07-11 Rovi Corp. Systems and methods for granting access to digital content using electronic tickets and ticket tokens
US8997254B2 (en) 2012-09-28 2015-03-31 Sonic Ip, Inc. Systems and methods for fast startup streaming of encrypted multimedia content
US9071887B2 (en) * 2012-10-15 2015-06-30 Verizon Patent And Licensing Inc. Media session heartbeat messaging

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6236971B1 (en) * 1994-11-23 2001-05-22 Contentguard Holdings, Inc. System for controlling the distribution and use of digital works using digital tickets
US20070100757A1 (en) * 1999-05-19 2007-05-03 Rhoads Geoffrey B Content Protection Arrangements
US20040039916A1 (en) * 2002-05-10 2004-02-26 David Aldis System and method for multi-tiered license management and distribution using networked clearinghouses
US20100138903A1 (en) * 2008-12-03 2010-06-03 General Instrument Corporation Ticket-Based Implementation of Content Leasing

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10212486B2 (en) 2009-12-04 2019-02-19 Divx, Llc Elementary bitstream cryptographic material transport systems and methods
US9883204B2 (en) 2011-01-05 2018-01-30 Sonic Ip, Inc. Systems and methods for encoding source media in matroska container files for adaptive bitrate streaming using hypertext transfer protocol
US8850216B1 (en) * 2011-05-19 2014-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Client device and media client authentication mechanism
US10244272B2 (en) 2011-09-01 2019-03-26 Divx, Llc Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
US10225588B2 (en) 2011-09-01 2019-03-05 Divx, Llc Playback devices and methods for playing back alternative streams of content protected using a common set of cryptographic keys
US10341698B2 (en) 2011-09-01 2019-07-02 Divx, Llc Systems and methods for distributing content using a common set of encryption keys
US9621522B2 (en) 2011-09-01 2017-04-11 Sonic Ip, Inc. Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
US9626490B2 (en) 2012-01-06 2017-04-18 Sonic Ip, Inc. Systems and methods for enabling playback of digital content using electronic tickets and ticket tokens representing grant of access rights
US10289811B2 (en) 2012-01-06 2019-05-14 Divx, Llc Systems and methods for enabling playback of digital content using status associable electronic tickets and ticket tokens representing grant of access rights
US8918908B2 (en) 2012-01-06 2014-12-23 Sonic Ip, Inc. Systems and methods for accessing digital content using electronic tickets and ticket tokens
US8997254B2 (en) 2012-09-28 2015-03-31 Sonic Ip, Inc. Systems and methods for fast startup streaming of encrypted multimedia content
US20140165209A1 (en) * 2012-12-11 2014-06-12 Verizon Patent And Licensing Inc. Digital content delivery platform for multiple retailers
US10225299B2 (en) 2012-12-31 2019-03-05 Divx, Llc Systems, methods, and media for controlling delivery of content
US10264255B2 (en) 2013-03-15 2019-04-16 Divx, Llc Systems, methods, and media for transcoding video data
US9712890B2 (en) 2013-05-30 2017-07-18 Sonic Ip, Inc. Network video streaming with trick play based on separate trick play files
US9967305B2 (en) 2013-06-28 2018-05-08 Divx, Llc Systems, methods, and media for streaming media content
US9202076B1 (en) * 2013-07-26 2015-12-01 Symantec Corporation Systems and methods for sharing data stored on secure third-party storage platforms
EP3039562A4 (en) * 2013-08-30 2017-08-02 D&M Holdings, Inc. Network device, system and method for rendering an interactive multimedia playlist
US9088563B2 (en) * 2013-09-09 2015-07-21 International Business Machines Corporation Using service request ticket for multi-factor authentication
US9088562B2 (en) 2013-09-09 2015-07-21 International Business Machines Corporation Using service request ticket for multi-factor authentication
US20150074785A1 (en) * 2013-09-09 2015-03-12 International Business Machines Corporation Using service request ticket for multi-factor authentication
EP2846555A1 (en) * 2013-09-10 2015-03-11 Netflix, Inc. Streaming media content
US10108788B2 (en) 2013-09-10 2018-10-23 Netflix, Inc. Fast-expiring licenses used to speculatively authorize access to streaming media content
US9866878B2 (en) 2014-04-05 2018-01-09 Sonic Ip, Inc. Systems and methods for encoding and playing back video at different frame rates using enhancement layers
US10321168B2 (en) 2014-04-05 2019-06-11 Divx, Llc Systems and methods for encoding and playing back video at different frame rates using enhancement layers
US9798865B2 (en) 2014-06-02 2017-10-24 Sonic Ip, Inc. Systems and methods for binding content playback to the pairing of a playback device and removable memory storage device
US10225298B2 (en) * 2015-01-06 2019-03-05 Divx, Llc Systems and methods for encoding and sharing content between devices
US20160197971A1 (en) * 2015-01-06 2016-07-07 Sonic Ip, Inc. Systems and Methods for Encoding and Sharing Content between Devices
US10368096B2 (en) 2018-10-09 2019-07-30 Divx, Llc Adaptive streaming systems and methods for performing trick play

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