Abstract: Disclosed is a mutual authentication method and apparatus in a CAS including a headend system and DCAS host. In particular, example embodiments relate to a mutual authentication method and apparatus in DCAS, wherein the mutual authentication is performed between an authentication server of the headend system and an SM of a DCAS host, and then CAS software is downloaded to the SM. According to the example embodiments, there is provided a mutual authentication protocol between the authentication server of the headend and the SM of the DCAS host in a cable network, and also provided a mutual authentication method and apparatus in the DCAS where a substantial authentication based on a hardware, such as a smart card or a cable card, is not needed.

Abstract: Disclosed is a method of providing a video contents service including calculating conversion information indicating a relation between a projection area and an area corresponding to the projection area in order to project video contents on the area corresponding to the projection area which is a partial area within a prepared image in a user image photographed by a user terminal; and transmitting the calculated conversion information to the user terminal.

Abstract: A downloadable conditional access system (DCAS), a secure micro (SM), and a transport processor (TP), and a security authentication method using the same are provided. The DCAS provides a safe security environment through a security protocol which enables mutual authentication and secure channel establishment between the SM and the TP.

Abstract: Provided are a Downloadable Conditional Access System (DCAS), and a channel setting method and a message format for a 2-way communication between a terminal and an authentication server in the DCAS. The DCAS may include: a verification unit to verify an electronic signature and an integrity with respect to a message received from the authentication server; an extraction unit to extract network access information of the authentication server from the message in which the electronic signature and the integrity are verified; and a channel setting unit to set a communication channel with the authentication server based on the extracted network access information.

Abstract: An augmented broadcasting stream transmission device and method and an augmented broadcasting service providing device and method capable of ensuring that augmented broadcasting metadata arrive at a receive terminal in a time more rapid as compared to a corresponding video frame by a predetermined time are provided.

Abstract: Provided is an apparatus and method for providing metadata in advance in order to gain a time required for a receiving terminal to receive augmented content corresponding to the metadata, based on the metadata received over a communication network in a bidirectional digital broadcast. The apparatus may provide a service before a predetermined time for a channel bound service that provides augmented content associated with a broadcast program, or a time-restraint service, such as a quiz program, for which an access to a website may required by a predetermined time. Also, the apparatus may provide metadata of a subsequent program in advance, before a predetermined time when transmitting the broadcast program, whereby a receiving terminal may receive associated information in advance, and a viewer may utilize a website or an augmented content service of a corresponding program, simultaneously with viewing the corresponding program.

Abstract: A method of operating a headend system for a downloadable conditional access service, the method including: receiving, by an Authentication Proxy (AP) server, basic authentication information from a Downloadable Conditional Access System (DCAS) host, the basic authentication information being required to authenticate the DCAS host; transmitting, by the AP server, the basic authentication information to an external trusted authority device which authenticates the DCAS host; generating, by the AP server, a session key for encrypting/decrypting a secure micro client using a session key sharing factor; obtaining, by the AP server, download-related information of the secure micro client from a DCAS Provisioning Server (DPS); and commanding, by the AP server, an Integrated Personalization System (IPS) server to download the secure micro client to the DCAS host based on the download-related information, the secure micro client being encrypted by the session key.

Abstract: A method and apparatus for providing supplementary information about content in a broadcasting system are provided. A method of a reception terminal providing supplementary information about content includes receiving content and metadata, extracting an indicator for indicating whether supplementary information about the content exists or not from the metadata, determining whether the supplementary information about the content exists or not based on the indicator, outputting the supplementary information about an appearance element of the content in association with the content based on the metadata, accessing a server for providing the supplementary information about the to appearance element, based on the metadata when an instruction to download the supplementary information about the appearance element is received, and downloading the supplementary information about the appearance element from the server and storing the downloaded supplementary information.

Abstract: The system includes a metadata generation apparatus for generating metadata to designate a specific space and time in and on which a speech balloon or a music book will be displayed on broadcasting content, a multiplexing broadcasting server for multiplexing the metadata received from the metadata generation apparatus and the broadcasting content and sending the multiplexed result to a reception apparatus, an augmented content providing apparatus for sending the speech balloon suitable for speech included in the broadcasting content or the music book suitable for music included in the broadcasting content to the reception apparatus, and the reception apparatus for displaying the broadcasting content and displaying the augmented content in a specific space and time of the broadcasting content based on the metadata.

Abstract: A Downloadable Conditional Access System (DCAS) headend system and method for processing an error of Secure Micro (SM) Client Software are provided to prevent further transmission of SM Client Software where an error occurred, and to prevent unnecessary traffic due to repeat reinstallation of SM Client Software between an Authentication Proxy (AP) server and a terminal, by changing policy information regarding a transmission of SM Client Software associated with error information, when a number of terminals that transmit the error information exceeds a reference value as a result of analyzing result information regarding a reception and an installation of the SM Client Software received from a terminal corresponding to a DCAS headend system.

Abstract: A method and apparatus for management and transmission of a classified conditional access application to provide Downloadable Conditional Access System (DCAS) service according to disclosed embodiments is an effective managing method according to a type of a conditional access module in a software version in the DCAS. In particular, it relates to a method and apparatus which can continuously provide Pay per View (PPV) service during movement in a DCAS service operator (SO) network, such as maintaining independence of CAS SO in DCAS, provide adaptability to adapt to a variety of policies of the SO, and install an optimum application in a terminal.

Abstract: A mobile terminal constituting a multi-screen service environment in a switched digital video (SDV)-based video transmission system structure serves like a remote controller of a reception terminal having a large screen such as a TV. A broadcast channel viewed in the mobile terminal can be shared with the large screen of the TV or the like, and a program can be directly viewed in the large screen of the TV or the like based on program guide information received by the mobile terminal.

Abstract: Disclosed is a downloadable conditional access system (DCAS) including a key request unit to transmit a key request message to an authentication server, an authentication request unit to request authentication from the authentication server based on a key response message received from the authentication server in response to the key request message, and a session establishment unit to establish a session with the authentication server, based on an authentication response message received in response to the authentication request.

Abstract: A Secure Micro (SM) copy detection system includes at least one Access Point (AP) that is connected to at least one host group including at least one SM, at least one Multiple-Services Operator (MSO) that is used to manage the at least one SM and includes the at least one AP, and a host information management server that is used to perform authentication of the at least one SM and that is independently connected to the at least one MSO.

Abstract: An apparatus for remotely monitoring a terminal is provided which includes an analyzer to map terminal information regarding at least one management target terminal, a collection period, a cycle setting value, or an analysis item, to group the at least one management target terminal, and to store the grouped at least one management target terminal in a form of a profile, a management processor to perform a query for a Management Information Base (MIB) object requested by the at least one management target terminal conforming with a Simple Network Management Protocol (SNMP) standard, and to transmit a value of the returned MIB object to the analyzer, and an output unit to output, from a database, at least one of the analysis item, the analysis period, the terminal information, and an output format.

Abstract: A Downloadable Conditional Access System (DCAS) headend system and method for processing an error of Secure Micro (SM) Client Software are provided to prevent further transmission of SM Client Software where an error occurred, and to prevent unnecessary traffic due to repeat reinstallation of SM Client Software between an Authentication Proxy (AP) server and a terminal, by changing policy information regarding a transmission of SM Client Software associated with error information, when a number of terminals that transmit the error information exceeds a reference value as a result of analyzing result information regarding a reception and an installation of the SM Client Software received from a terminal corresponding to a DCAS headend system.

Abstract: A downloadable conditional access system (DCAS), a secure micro (SM), and a transport processor (TP), and a security authentication method using the same are provided. The DCAS provides a safe security environment through a security protocol which enables mutual authentication and secure channel establishment between the SM and the TP.

Abstract: A mutual authentication apparatus in a Downloadable Conditional Access System (DCAS) includes an announce protocol processor to authenticate SecurityAnnounce information using an Authentication Proxy (AP) and to transmit the authenticated SecurityAnnounce information to a Secure Micro (SM), a keying protocol processor to relay KeyRequest information and KeyResponse information between a Trusted Authority (TA) and the SM in response to the SecurityAnnounce information, a decryption unit to decrypt the KeyResponse information using the SM, an authentication protocol processor to determine whether a first encryption key of the KeyResponse information is identical to a second encryption key generated by the AP, and a download protocol processor to control DownloadInfo to be transmitted from the AP to the SM, the DownloadInfo permitting the SM to download SM Client Image information.

Abstract: A mutual authentication method in a Downloadable Conditional Access System (DCAS) is provided. The mutual authentication method may receive authentication-related information about authentication between an authentication unit and a security module (SM) from a Trusted Authority (TA), generate an authentication session key using the authentication-related information, transmit the authentication session key by the authentication unit to the SM through a Cable Modem Termination System (CMTS), and control a Conditional Access System (CAS) software to be downloaded to the SM from the authentication unit, when the authentication is completed by the authentication session key.

Abstract: Disclosed is a downloadable conditional access system (DCAS) including a key request unit to transmit a key request message to an authentication server, an authentication request unit to request authentication from the authentication server based on a key response message received from the authentication server in response to the key request message, and a session establishment unit to establish a session with the authentication server, based on an authentication response message received in response to the authentication request.