Abstract: Provided are an apparatus and a method for processing conditional access system (CAS)-based content. A method of operating a broadcast receiving apparatus includes: receiving a broadcast stream that includes content encrypted based on a CAS; extracting, from the received broadcast stream, CAS information for decrypting the encrypted content; receiving an entitlement control message (ECM) having a preset format based on the CAS information generated in a different format for each broadcasting business operator; and displaying the content decrypted based on the ECM.

Abstract: An apparatus and a method for providing a security service in a communication system are provided. The security device includes a receiver configured to receive validation information used for validating data received by a receiving apparatus from the receiving apparatus, at least one processor configured to determine whether the validation information matches set validation related information, and a transmitter configured to transmit information indicating the determined result to the receiving apparatus.

Abstract: A broadcast receiver includes a communicator configured to receive broadcast data including metadata associated with an application and a controller configured to obtain a comparison result by comparing a reference hash with a metadata hash generated based on the metadata, authenticate the metadata based on the comparison result, and launch the application based on a result of the authentication.

Abstract: According to embodiments of the present invention, a receiver obtains service location information which defines current and next sources from which a data stream can be obtained, and a switching time at which the source of the data stream will be switched from the current source to the next source. Before the switching time, the receiver receives the data stream from the current source, and after the switching time, the receiver receives the data stream from the next source. The next source can be defined in initial service location information, or in updated service location information obtained later. An apparatus and method for providing the service location information are also disclosed. In some embodiments, a broadcast provider and/or the receiver can execute a method to compensate for an IP delay experienced by the receiver.

Abstract: An apparatus and method for receiving a broadcast stream is provided. The apparatus is configured to receive key information and additional information through the broadcast stream, select one of a plurality of predetermined functions based on the additional information, and perform the selected function in response to a control signal identified by the key information. The additional information may include link information such as a URL or telephone number, and the function may be selected based on a type of the link information. In some embodiments, the link information may be extracted from audio-visual data of a selected programme, using optical character recognition. The apparatus may connect to a secondary device to transmit information to the secondary device, and may receive information relating to the selected programme from the secondary device.

Abstract: An apparatus and a method for providing a security service in a communication system are provided. The security device includes a receiver configured to receive validation information used for validating data received by a receiving apparatus from the receiving apparatus, at least one processor configured to determine whether the validation information matches set validation related information, and a transmitter configured to transmit information indicating the determined result to the receiving apparatus.

Abstract: A broadcast receiver includes a communicator configured to receive broadcast data including metadata associated with an application and a controller configured to obtain a comparison result by comparing a reference hash with a metadata hash generated based on the metadata, authenticate the metadata based on the comparison result, and launch the application based on a result of the authentication.

Abstract: According to embodiments of the present invention, a receiver obtains service location information which defines current and next sources from which a data stream can be obtained, and a switching time at which the source of the data stream will be switched from the current source to the next source. Before the switching time, the receiver receives the data stream from the current source, and after the switching time, the receiver receives the data stream from the next source. The next source can be defined in initial service location information, or in updated service location information obtained later. An apparatus and method for providing the service location information are also disclosed. In some embodiments, a broadcast provider and/or the receiver can execute a method to compensate for an IP delay experienced by the receiver.

Abstract: A digital signal transmitter in which multiple data streams are each transmitted by modulation of a respective frequency band within one of a group of frequency channels, the frequency bands each occupying no more than a predetermined maximum bandwidth less than or equal to the channel width; comprises means for transmitting at respective frequency positions within each frequency channel, one or more instances of band information defining the frequency bands corresponding to all of the data streams carried within that frequency channel, the one or more instances being arranged so that any portion of the frequency channel equal in extent to the predetermined maximum bandwidth includes at least one instance of the band information.

Abstract: An apparatus and method for sending encrypted data to a conditional access module (CAM) over a common interface (CI). A plurality of data packets are formed, and one data packet of the plurality of data packets includes a header and a payload for storing the encrypted data. The data packets are sent to the CAM over a transport stream (TS) interface of the CI. Encrypted data in different file formats can be sent over the TS interface. An initialization message including information about a selected format can be sent to the CAM over a control interface of the CI, and the CAM can send data request messages over the control interface to request specific data.

Abstract: An apparatus for receiving a broadcast stream, and a method for use of the apparatus, are disclosed. The apparatus includes an application portal for launching a predefined application. The apparatus receives application information including identification ID information which identifies an application and protocol information which indicates a protocol to be used to launch the identified application, and launches the predefined application from the application portal in response to the ID information identifying the predefined application and the protocol information indicating the application portal. The apparatus may be arranged to only launch the identified application from the portal in response to the predefined application has at least the minimum version number. The application information can be received as an Application Information Table (AIT), and the ID information can be provided as organization_id and application_id fields in the AIT.

Abstract: A method of enabling transmission of a data service from a content server to a terminal using a data channel in a system in which at least part of the data service is transmitted to the terminal using a broadcast channel, the method including: receiving, using the broadcast channel, first data comprising part of the data service; processing the first data using a signature-generating algorithm to derive first signature data; transmitting the first signature data using the data channel to the content server; validating the first signature data by comparing said first signature data with a signature derived by processing data comprising part of the data service using a corresponding signature-generating algorithm; and enabling the terminal to access the data service using the data channel dependent on validation of the first signature data.

Abstract: A digital signal transmitter in which multiple data streams are each transmitted by modulation of a respective frequency band within one of a group of frequency channels, the frequency bands each occupying no more than a predetermined maximum bandwidth less than or equal to the channel width; comprises means for transmitting at respective frequency positions within each frequency channel, one or more instances of band information defining the frequency bands corresponding to all of the data streams carried within that frequency channel, the one or more instances being arranged so that any portion of the frequency channel equal in extent to the predetermined maximum bandwidth includes at least one instance of the band information.

Abstract: A digital signal transmitter in which multiple data streams are each transmitted by modulation of a respective frequency band within one of a group of frequency channels, the frequency bands each occupying no more than a predetermined maximum bandwidth less than or equal to the channel width; comprises means for transmitting at respective frequency positions within each frequency channel, one or more instances of band information defining the frequency bands corresponding to all of the data streams carried within that frequency channel, the one or more instances being arranged so that any portion of the frequency channel equal in extent to the predetermined maximum bandwidth includes at least one instance of the band information.

Abstract: A broadcasting receiving apparatus capable of communicating with a secondary device includes a receiving module configured to receive application information relating to a selected program; and a control module configured to receive a control command from a control device, wherein the control module, in response to a predetermined control signal, controls the secondary device to execute an application identified by the application information, when the secondary device is registered in order to communicate with the broadcast receiving apparatus.

Abstract: A digital broadcast media recording apparatus has means for determining if a program which is scheduled to be broadcast has already been recorded, and, if it has been, for deciding if the program which is scheduled to be broadcast should be recorded based on a comparison of the attributes of the digital signal representing the scheduled program and corresponding attributes of the digital signal representing the recorded program. If it is determined that the scheduled program should be recorded, a control means gives an instruction which causes a recording unit to record the broadcast digital system representing the scheduled program when it is broadcast. Optionally, the digital signal representing the recorded program can be deleted once the digital signal representing the scheduled program is recorded. An identifier is used to determine whether the scheduled program is the same as a recorded program.

Abstract: An apparatus for receiving a broadcast stream, and a method for use of the apparatus, are disclosed. The apparatus includes an application portal for launching a predefined application. The apparatus receives application information including identification ID information which identifies an application and protocol information which indicates a protocol to be used to launch the identified application, and launches the predefined application from the application portal in response to the ID information identifying the predefined application and the protocol information indicating the application portal. The apparatus may be arranged to only launch the identified application from the portal in response to the predefined application has at least the minimum version number. The application information can be received as an Application Information Table (AIT), and the ID information can be provided as organisation_id and application_id fields in the AIT.

Abstract: An apparatus and method for receiving a broadcast stream is provided. The apparatus is configured to receive key information and additional information through the broadcast stream, select one of a plurality of predetermined functions based on the additional information, and perform the selected function in response to a control signal identified by the key information. The additional information may include link information such as a URL or telephone number, and the function may be selected based on a type of the link information. In some embodiments, the link information may be extracted from audio-visual data of a selected programme, using optical character recognition. The apparatus may connect to a secondary device to transmit information to the secondary device, and may receive information relating to the selected programme from the secondary device.

Abstract: A television receiver device including first and second tuners for receiving first and second multiplexes of channels, each multiplex including at least one channel carrying a succession of programs, actual event information providing information relating to channels in the respective multiplex and other event information providing information relating to channels of other multiplexes. A program is scheduled to be broadcast at the same time in different first and second formats respectively in the first and second multiplexes. The device further includes a user interface configured to allow selection of a channel of said first multiplex; a controller configured to tune said first tuner to said first multiplex and to select said channel of said first multiplex; wherein the controller is configured to be responsive to the channel selected by the user interface carrying said program to tune said second tuner to said second multiplex.

Abstract: An apparatus and method for sending encrypted data to a conditional access module (CAM) over a common interface (CI). A plurality of data packets are formed, and one data packet of the plurality of data packets includes a header and a payload for storing the encrypted data. The data packets are sent to the CAM over a transport stream (TS) interface of the CI. Encrypted data in different file formats can be sent over the TS interface. An initialization message including information about a selected format can be sent to the CAM over a control interface of the CI, and the CAM can send data request messages over the control interface to request specific data.