Abstract: Methods and systems to perform methods comprising receiving, at a computer system from a first electronic device a first electronic media work; extracting one or more features therefrom; determining that at least a portion of the first electronic media work corresponds to a first reference media work based on a matching of the extracted features against a database of reference features; receiving, from a second electronic device, a query related to the first electronic media work; linking the query to action information in an action database based upon determining that at least a portion of the first electronic media work corresponds to the first reference media work; generating machine-readable instructions associated with the action to be performed based at least in part on the linking of the query to the action information; transmitting, to the second electronic device, the machine-readable instructions; and logging an event associated with the machine-readable instructions.

Abstract: A computer system comprising one or more processors and computer-readable media operatively connected thereto, having stored thereon instructions for carrying out the steps of: maintaining one or more databases comprising first electronic data comprising digitally created reference compact electronic representations for each of a plurality of reference electronic works and second electronic data associated with the reference electronic works and related to action information corresponding thereto; obtaining a first digitally created compact electronic representation comprising one or more extracted feature vectors of a first electronic work; identifying a matching reference electronic work by comparing the first digitally created compact electronic representation of the first electronic work with the first electronic data using a sub-linear search of the first electronic data; determining the action information corresponding to the matching reference electronic work based on the second electronic data; and as

Abstract: A method comprising the steps of: receiving, from a user electronic device at a computer system, one or more extracted feature vectors that are compact representations of one or more video frames of a video displayed at the user device; identifying, at the computer system, one or more products related to the one or more video frames based at least in part on an approximate nearest neighbor search of an electronic database of reference feature vectors corresponding to one or more reference works that identifies any match within a threshold of at least one of the reference feature vectors to the one or more extracted feature vectors but does not guarantee to identify the closest match to the one or more extracted feature vectors; providing, by the computer system to the user electronic device, the identified one or more products along with action information associated with the identified one or more products, wherein the action information is related to an action to be performed at the user electronic devic

Abstract: A method including the steps of: receiving, by a computer system including at least one computer, a first electronic media work uploaded from a first electronic device; extracting one or more features from the first electronic media work; linking the first electronic media work with a reference electronic media work identifier associated with a reference electronic media work to generate correlation information using an approximate nearest neighbor search; storing the correlation information; receiving, from a second electronic device, a query related to the first electronic media work; correlating the query with action information related to an action to be performed and associated with the reference electronic media work identifier based at least in part on the correlation information; generating machine-readable instructions based upon the action information; and providing to the second electronic device, the machine-readable instructions to be used in performing the action.

Abstract: When a social networking system receives an image and associated text for presentation to one or more users, the social networking system determines how to present the text and the image. For example, the social networking system determines if to overlay the text onto an area of the image. A readability score indicating the readability of the text if overlaid onto an area of the image is determined based on attributes of the image and of the text. Using the readability score, the social networking system overlays the text onto an area of the image when presented to other users or presents the text adjacent to the image when presented to other users.

Abstract: The subject matter of this specification can be implemented in, among other things, a method that includes storing one or more first content items and a second content item that belong to a collection at a content hosting system. The method further includes receiving one or more interactions with the first content items from one or more first user accounts. The method further includes selecting, by a processing device, the second content item and providing a recommendation to a second user account to view the second content item based on the second content item belonging to the same collection as the first content items and on the interactions with the first content items.

Abstract: A method comprising the steps of: receiving, from a user electronic device at a computer system, one or more extracted feature vectors that are compact representations of one or more video frames of a video displayed at the user device; identifying, at the computer system, one or more products related to the one or more video frames based at least in part on an approximate nearest neighbor search of an electronic database of reference feature vectors corresponding to one or more reference works that identifies any match within a threshold of at least one of the reference feature vectors to the one or more extracted feature vectors but does not guarantee to identify the closest match to the one or more extracted feature vectors; providing, by the computer system to the user electronic device, the identified one or more products along with action information associated with the identified one or more products, wherein the action information is related to an action to be performed at the user electronic device;

Abstract: Some embodiments implement end-to-end certificate pinning for content intake from various content providers and for content distribution to various end users. To ensure secure retrieval of content provider content, the content distributor pins the content provider to one or more certificate authorities. Accordingly, the content distributor only retrieves content from a sender identified as the content provider when the sender identity is verified with a certificate issued by a certificate authority pinned to the content provider. To ensure secure delivery of content from the content distributor to an end user, the content distributor modifies the pinset of the user browser to pin the content distributor to one or more certificate authorities. Thereafter, the user browser only accepts content from a sender identified as the content distributor when the sender identity is verified with a certificate issued by a certificate authority pinned to the content distributor in the browser pinset.

Abstract: Methods and systems to perform methods comprising receiving, at a computer system from a first electronic device a first electronic media work; extracting one or more features therefrom; determining that at least a portion of the first electronic media work corresponds to a first reference media work based on a matching of the extracted features against a database of reference features; receiving, from a second electronic device, a query related to the first electronic media work; linking the query to action information in an action database based upon determining that at least a portion of the first electronic media work corresponds to the first reference media work; generating machine-readable instructions associated with the action to be performed based at least in part on the linking of the query to the action information; transmitting, to the second electronic device, the machine-readable instructions; and logging an event associated with the machine-readable instructions.

Abstract: Methods and systems to perform methods comprising receiving, at a computer system from a first electronic device a first electronic media work; extracting one or more features therefrom; determining that at least a portion of the first electronic media work corresponds to a first reference media work based on a matching of the extracted features against a database of reference features; receiving, from a second electronic device, a query related to the first electronic media work; linking the query to action information in an action database based upon determining that at least a portion of the first electronic media work corresponds to the first reference media work; generating machine-readable instructions associated with the action to be performed based at least in part on the linking of the query to the action information; transmitting, to the second electronic device, the machine-readable instructions; and logging an event associated with the machine-readable instructions.

Abstract: A method including the steps of: receiving, by a computer system including at least one computer, a first electronic media work uploaded from a first electronic device; extracting one or more features from the first electronic media work; linking the first electronic media work with a reference electronic media work identifier associated with a reference electronic media work to generate correlation information relating the first electronic media work with at least an action associated with the reference electronic media work identifier; storing the correlation information; receiving, from a second electronic device, a query related to the first electronic media work; correlating the query with action information related to an action to be performed based at least in part on the correlation information; generating machine-readable instructions based upon the action information; and providing the machine-readable instructions to the second electronic device to be used in performing the action.

Abstract: A computer system comprising one or more processors and computer-readable media operatively connected thereto, having stored thereon instructions for carrying out the steps of: maintaining one or more databases comprising first electronic data comprising digitally created reference compact electronic representations for each of a plurality of reference electronic works and second electronic data associated with the reference electronic works and related to action information corresponding thereto; obtaining a first digitally created compact electronic representation comprising one or more extracted feature vectors of a first electronic work; identifying a matching reference electronic work by comparing the first digitally created compact electronic representation of the first electronic work with the first electronic data using a sub-linear search of the first electronic data; determining the action information corresponding to the matching reference electronic work based on the second electronic data; and as

Abstract: A method including the steps of: receiving, by a computer system including at least one computer, a first electronic media work uploaded from a first electronic device; extracting one or more features from the first electronic media work; linking the first electronic media work with a reference electronic media work identifier associated with a reference electronic media work to generate correlation information using an approximate nearest neighbor search; storing the correlation information; receiving, from a second electronic device, a query related to the first electronic media work; correlating the query with action information related to an action to be performed and associated with the reference electronic media work identifier based at least in part on the correlation information; generating machine-readable instructions based upon the action information; and providing to the second electronic device, the machine-readable instructions to be used in performing the action.

Abstract: Methods, media, and systems for, in one embodiment, protecting one or more keys in an encryption and/or decryption process can use precomputed values in the process such that at least a portion of the one or more keys is not used or exposed in the process. In one example of a method, internal states of an AES encryption process are saved for use in a counter mode stream cipher operation in which the key used in the AES encryption process is not exposed or used.

Abstract: Embodiments of techniques for distributing and rendering media content are provided. In response to a request for a first media file, a combined media file is generated having first and second segments that together include data from the first media file and from a second media file. The combined media file is then provided to a player module operable to render only data from the first media file during a first operating mode, and operable to render data from both the first and second media files during a second operating mode. For example, the first media file may be a music file, and the second media file an advertisement. A consumer may play the music portion without special software or a license, but the advertisement will be rendered as well. Alternatively, the consumer may purchase a license and use special playback software to render the music without the advertisement.

Abstract: In accordance with some embodiments, information may be collected from processor-based devices after the processor-based devices have already been deployed. Moreover, in some cases, the information that is to be collected, the collection sources, and the handling of the data may be specified after the processor-based devices have already been deployed.

Abstract: Tools are provided for distributing access-restricted content in an internet protocol television (“IPTV”) environment based on portable entitlement keys. Such tools can include a decoder, an encoder, and a network entitlement handler. The decoder may be configured to receive a key associated with entitlement information, and transmit the entitlement information over a network. The encoder may be configured to receive content from content providers, and to encode the content to create IP-compatible content, with access restrictions based on entitlement. The network entitlement handler may be configured to receive a request for requested content from the decoder; receive the access-restricted content including (including the requested content) from the encoder; and transmit the requested content over the network to the decoder using IP, when the decoder is entitled to receive the requested content.

Abstract: The invention relates to a method and a system for conditional access making it possible to prevent the fraudulent use of a subscriber electronic device (1a, 1b, 1m) and to thus effectively combat the fraudulent making available of protected contents. The invention further relates to the adaptation of such a device as well as to a method allowing the revocation of the latter if it is deemed to be illicitly exploited or its possible reinstatement.

Abstract: A media player can comprise a playlist parsing module configured to parse a playlist comprising a plurality of nested elements of a media presentation and select an element of the media presentation for generating output. The playlist can comprise a nested structure of objects representative of the elements of the media presentation, with at least one declared trait applicable to one or more elements. For example, the playlist may specify a composition of a plurality of visual, audio, or other elements for generating output or other behavior in parallel and/or in series over the course of the media presentation. The media player can comprise a playback component configured to utilize at least one selectively-enabled functional component of the media player to generate output based on evaluating the trait(s) exposed by the selected element.

Abstract: The aim of the present invention is to allow the flexible exploitation of a broadcasted and recorded content, in particular to allow both users as well as broadcasters to conciliate temporary prohibition and posterior exploitation. This aim is achieved by a storage method of a broadcasted event, by at least one receiver, this method comprising the following steps: storage of an event encrypted by at least one content key storage of a control license comprising the content key, an event identifier and the first usage conditions, after the diffusion of the event has finished, generation and storage of a release message, comprising the event identifier and the second usage conditions, during the exploitation of the event, search for a release message, and if such message exists, execution of the second usage conditions of the release message in place of the first usage conditions of the control license.

Abstract: A digital information recording apparatus includes a recording circuit for recording information of a retention period included in the digital information and indicating a period for permitting the digital information to be held in the recording medium, starting with a time at which the digital information is recorded on the recording medium; and information of a playback permission period included in the digital information and indicating a period for permitting the digital information to be played back starting with a time at which the information is reproduced initially following recording of the digital information on the recording medium, permitting temporary recording or copying for the information permitted for “copy never” or “copy one generation.

Abstract: In a downloadable conditional access system (DCAS), preferably all DCAS-specific code is implemented in a configurable secure (CS) processor that is in communication with the host processor. Preferably, no DCAS-specific code is executed in the host processor. The host processor delivers commands to the CS processor, which the CS processor performs to configure itself in accordance with the particular DCAS encryption scheme used by the DCAS. Once configured, the CS processor executes a DCAS software module that has been downloaded to the CS processor, which looks for the corresponding EMMs and ECMs, processes them to obtain the CW, and then uses the CW to decrypt the content stream.

Abstract: A new media device including a decryption device that is operable to create a decryption key to read media. The decryption device is itself a read/write device that allows reducing or decrementing each time the decryption key is used.

Abstract: A device including a communication interface and processing logic is provided. The communication interface may receive digital rights management security information and content from a source device, the digital rights management information having been deactivated in the source device. The processing logic may reactivate the digital rights management security information and may render the content according to the digital rights management security information.

Abstract: A method for validating access to a product by a security module associated with a user unit unidirectionally connected to a managing center MC transmitting management messages being generated following the receipt of a request for an access right to the product, said method comprises the steps of purchasing a product, determining a code representing the product, displaying said code on a display device, transmitting to the MC, a request comprising said code and an security module identifier, transmitting a right confirmation message addressed to the user unit associated with said security module, wherein, at purchasing of the product, a temporary right is registered in the security module, said temporary right being replaced by a definitive right by the right confirmation message received from the MC, said definitive right authorizing the access to the purchased product by debiting the value amount associated with said product.

Abstract: A device for playback (8) of content (2) in accordance with a license (4) comprises a processing unit (3) for accessing the license and for specifying usage information for the content. The processing unit is communicatively connected to a usage indicator (5) for providing a measure of usage and a communication unit (6). Usage information is set by the processing unit to allow usage of the content if the measure of usage has been communicated to a service provider (10) in accordance with instructions derived from the license, else usage of the content is forbidden.

Abstract: A system for securing patient medical information for communication over a potentially vulnerable system includes separating patient's medical file into a demographics layer and a data layer, separately encrypting the demographic layer and data layer using different encryption keys, and providing servers in a communication and processing system with a decryption key for the layer processed by such server. Medical file data may be separated into more than two layers. Users accessing the system are authenticated using standard techniques. By separately encrypting different parts of a patient medical record, processing and communication of patient medical files by intermediary servers is enabled without risking disclosure of sensitive patient information if such servers are compromised.

Abstract: A media content delivery system and method is operable to communicate an authorized single media content stream generated by a local programming provider (LPP) in a domestic market area (DMA) to a client facility, wherein the authorized single media content stream is multiplexed into a multi-media content stream with a plurality of other single media content streams generated by a plurality of other LPPS in the DMA. An exemplary embodiment identifies an authorized single media content stream of interest to a client; accesses the multi-media content stream communicated from a communication network at the client facility, unbundles the authorized single media content stream from the received multi-media content stream, and communicates the authorized single media content stream to a program content generation system operated by the client.

Abstract: In a downloadable conditional access system (DCAS), preferably all DCAS-specific code is implemented in a configurable secure (CS) processor that is in communication with the host processor. Preferably, no DCAS-specific code is executed in the host processor. The host processor delivers commands to the CS processor, which the CS processor performs to configure itself in accordance with the particular DCAS encryption scheme used by the DCAS. Once configured, the CS processor executes a DCAS software module that has been downloaded to the CS processor, which looks for the corresponding EMMs and ECMs, processes them to obtain the CW, and then uses the CW to decrypt the content stream.

Abstract: A method and a terminal device for making multi-system constraint of a specified permission in a digital rights. A rights object related to content object is obtained by an executing device. The specific permission descriptions of the rights object include system constraint descriptions of a plurality of systems of the same type. The executing device obtains a corresponding system information in the device according to the system constraint descriptions and compares the system information in the device with the system information in the system constraint descriptions, so as to judge whether there is any system permitted in system constraint descriptions. If yes, it determines to permit executing the specific permission for the content object; otherwise, it determines not to permit executing said specific permission for the content object.

Abstract: A method for use in playing content that is made up of data includes establishing in a device a physical media storing a first portion of the data making up the content, receiving a streamed second portion of the data making up the content, wherein the second portion of the data includes essential information for reconstructing the content from the first portion of the data, and playing the content by combining the first portion of the data with the second portion of the data to correctly reconstruct the content. A method for use in enhancing security of content that is made up of data includes removing information from the data making up the content that is essential for playing the content.

Abstract: A content key (CK) to decrypt a piece of encrypted content is obtained encrypted according to a public key of a licensor (PU-L) to result in (PU-L(CK)). (PU-L(CK)) is obscured according to (PU-L) and a value R to result in Obs (PU-L(CK)), and Obs (PU-L(CK)) is sent to the licensor, which applies a private key (PR-L) corresponding to (PU-L) to Obs (PU-L(CK)) to result in Obs (CK) as an obscured version of (CK). Obs (CK) is received from the licensor; and (CK) is obtained from Obs (CK) based on applying R thereto. The licensor cannot identify from Obs (PU-L(CK)) or from Obs (CK) the encrypted content or the content key (CK) from which the encrypted content may be identified.

Abstract: The present invention provides systems and methods for secure transaction management and electronic rights protection. Electronic appliances such as computers equipped in accordance with the present invention help to ensure that information is accessed and used only in authorized ways, and maintain the integrity, availability, and/or confidentiality of the information. Such electronic appliances provide a distributed virtual distribution environment (VDE) that may enforce a secure chain of handling and control, for example, to control and/or meter or otherwise monitor use of electronically stored or disseminated information. Such a virtual distribution environment may be used to protect rights of various participants in electronic commerce and other electronic or electronic-facilitated transactions. Distributed and other operating systems, environments and architectures, such as, for example, those using tamper-resistant hardware-based processors, may establish security at each node.

Abstract: Apparatus, system, and media for utilizing content. An exemplary system comprises a first computing device and a second computing device, wherein the first computing device transmits a request for access to content to the second computing device, receives the content from the second computing device, and grants at least one permitted utilization of the content, and wherein the second computing device receives the request for access to content from the first computing device, determines whether the first second computing device is permitted to receive the content, grants access to the content based at least in part on the first computing device being permitted to receive the content, and transmits the content to the first computing device based at least in part on the first computing device being permitted to receive the content.

Abstract: Method, apparatus, and media for embedding a watermark in digital content. An exemplary method comprises receiving digital content in an encrypted form, receiving a decryption key associated with the digital content, receiving permitted use information specifying conditions under which the digital content is permitted to be rendered and indicating that a watermark is to be embedded in a rendered copy of the digital content, determining whether the conditions are satisfied, and rendering the digital content if the conditions are satisfied based on the determining, the rendering including generating a watermark based on the permitted use information and creating a rendered copy of the digital content having the watermark embedded therein.

Abstract: The present invention provides a method, system and program product for modifying content usage conditions during broadcast content distribution. Specifically, the present invention allows protected (e.g., encrypted, secured, etc.) content to be received along with content usage conditions, an encrypted combination of the content usage conditions and a title key (e.g., a MAC), and a key management block. Using the key management block, a key encrypting key can be determined for decrypting the combination. Once the combination is decrypted, the content usage conditions can be modified (e.g., edited, added to, etc.).

Abstract: There is disclosed a media file distribution system and method. An asset management and delivery system and method for the distribution of digital files and data is provided. There are two major functions, with sub-functions within each. The system first serves as a fully automated management system for a company involved in video/file distribution, such as in video on demand (VOD) or other digital file industries. The system can ingest, prepare, schedule, transmit, track and report on any aspect of the business chain. Secondly, it also serves as a product for both content providers and recipients to be able to view, manage and run their entire content offering remotely from anywhere through the Internet.

Abstract: A method includes receiving, at a client device, an authentication seed from a first network. The method also includes receiving a shared secret. The method further includes, in response to receiving the authentication seed, determining a network address of the client device. The method further includes computing a result of a one-way hash function of a combination of the network address, the authentication seed, and the shared secret. The method further includes transmitting the network address and the result of the one-way hash function to a server that provides access control of a second network coupled to the first network. The method further includes receiving permission from the server to access the second network.

Abstract: A system and method is disclosed for detecting distribution of multimedia content. The volume level of data traffic is monitored for a plurality of users to select any users with high-bandwidth usage. The time of day and the day of the week may be considered when determining whether a user is a high-bandwidth user. Upon selecting a user as one with high-bandwidth usage, such user may be subject to packet inspections of data traffic streams. In some embodiments, content identification parameters or watermarks are added to one or more packets in a data traffic stream carrying multimedia content.

Abstract: An integrated, modular array of administrative and support services are provided for electronic commerce and electronic rights and transaction management. These administrative and support services supply a secure foundation for conducting transaction-related capabilities over electronic networks, and can also be adapted to the specific needs of electronic commerce value chains. In one embodiment a Distributed Commerce Utility having a secure, programmable, distributed architecture provides these administrative and support services. The Distributed Commerce Utility may comprise a number of Commerce Utility Systems. These Commerce Utility Systems provide a web of infrastructure support available to, and reusable by, the entire electronic community and/or many of its participants. Different support functions can be collected together in hierarchical and/or networked relationships to suit various business models or other objectives.

Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: A key-sharing scheme is used to control distribution and use of video and audio content in personal digital assistants (PDAs) and other wireless devices. A private key is split into key-shares using a Blakley-Shamir key splitting technique and the key-shares are distributed to various network entities including a finance server and security server. Key-shares are also stored in a user's subscriber identity module (SIM) and a security processor of the PDA. The key-shares from the network entities are provided to the PDA after the user requests specific video or audio content and credit verification is performed. The PDA's security processor combines the key-shares to form the decryption key for use in playing the content by the PDA's communications processor. When a service limit is reached, the PDA's security processor purges the key-shares to prevent further use of the content.

Abstract: The invention discloses a system for enhancing trust in transactions, most particularly in remote transactions between a plurality of transactional parties, for instance a seller and buyer(s) of goods and/or services over a public computer network such as the internet. Trust is disclosed to be a multivalent commodity, in that the trust that is to be enhanced relates to information about the subject matter of the transactions (e.g., the suitability of the goods and services sold), the bona fides of the supplier of the goods and services, the appropriateness of a pricing structure for a particular transaction or series of transactions, a quantum of additional transactional value that may be imparted to the transactional relationship, security of information exchange, etc.

Abstract: The present invention provides systems and methods for secure transaction management and electronic rights protection. Electronic appliances such as computers equipped in accordance with the present invention help to ensure that information is accessed and used only in authorized ways, and maintain the integrity, availability, and/or confidentiality of the information. Such electronic appliances provide a distributed virtual distribution environment (VDE) that may enforce a secure chain of handling and control, for example, to control and/or meter or otherwise monitor use of electronically stored or disseminated information. Such a virtual distribution environment may be used to protect rights of various participants in electronic commerce and other electronic or electronic-facilitated transactions. Distributed and other operating systems, environments and architectures, such as, for example, those using tamper-resistant hardware-based processors, may establish security at each node.

Abstract: Provided are apparatuses, systems and methods for providing security services. The apparatus includes a network interface unit for transceiving data between a control device and a management device, a controller for controlling provision of services requested from the control device through the network interface unit when a permit time, during which a target of security service is allowed to be given services, is longer than a used time, during which predetermined services are provided to the target of security service, and a used time processing unit for updating the used time by reflecting time during which the services are provided. When security services are performed, services of a controlled device can be provided during the permitted time according to a user or a control device.

Abstract: A method and apparatus for distributing Certificate Revocation List (CRL) information in an ad hoc network are provided. Ad hoc nodes in an ad hoc network can each transmit one or more certificate revocation list advertisement message(s) (CRLAM(s)). Each CRLAM includes an issuer certification authority (CA) field that identifies a certification authority (CA) that issued a particular certificate revocation list (CRL), a certificate revocation list (CRL) sequence number field that specifies a number that specifies the version of the particular certificate revocation list (CRL) that was issued by the issuer certification authority (CA). Nodes that receive the CRLAMs can then use the CRL information provided in the CRLAM to determine whether to retrieve the particular certificate revocation list (CRL).

Abstract: A new media device including a decryption device that is operable to create a decryption key to read media. The decryption device is itself a read/write device that allows reducing or decrementing each time the decryption key is used.

Abstract: A method for paying back customers for unused service units remaining after a billing cycle. A payback amount is determined by the product of the number of unused service units remaining and the payback rate amount. The payback amount credited to the customer is the calculated payback rate or a maximum payback amount, wherever is smaller. A total payback amount can be determined based on a combination of payback amounts for various services, including voice services, texting services, email services, and/or data storage services.

Abstract: A method for pairing a first element and a second element, wherein the first element and the second element form a first decoding system among a plurality of receiving decoding systems in a broadcasting network. Each receiving decoding system is adapted to descramble scrambled audiovisual information received over the broadcasting network. A first key unique in the broadcasting network is selected. A second key is determined according to the first key, such that a combination of the first key and the second key enables to decrypt broadcasted encrypted control data that is received to be decrypted by each receiving decoding system, the encrypted control data being identical for each receiving decoding system. The first key and the second key are assigned respectively to the first element and the second element.

Abstract: Based on the detailed reproduction control information defining the reproduction control state of data to be transmitted, the CPU 12 of the data transmission apparatus creates a simplified reproduction control information roughly defining the reproduction control state of the data, stores the simplified reproduction control information of the data in the packet header of a data packet carrying the data, stores the detailed reproduction control information in the data, and transmits the simplified reproduction control information and the detailed reproduction control information as well as the data to the data receiving apparatus 20 through the transmission channel 30 from the input-output interface 16.