Abstract: Disclosed is a method of providing additional content in a digital broadcast reception apparatus, the method including receiving a locator of additional content from a broadcast server while a user watches a broadcast program, receiving an instruction to insert the additional content from the broadcast server, receiving and reproducing the additional content from a content providing server designated by the locator, and switching back to the broadcast program. Thus, it is not necessary to allocate a separate channel and/or to switch channels for providing additional content.

Abstract: Provided are a method and a device for booting a host embodying a downloadable conditional access system (DCAS), wherein one of a plurality of pre-determined booting modes is decided as a booting mode of the host based on first information indicating whether a host can communicate with a broadcasting service provider and second information indicating whether a software-based security client providing information required for decrypting broadcasting data is installed to a hardware-based security module connected to the host, and the host is booted in the decided booting mode.

Abstract: Provided are a method and a device for booting a host embodying a downloadable conditional access system (DCAS), wherein one of a plurality of pre-determined booting modes is decided as a booting mode of the host based on first information indicating whether a host can communicate with a broadcasting service provider and second information indicating whether a software-based security client providing information required for decrypting broadcasting data is installed to a hardware-based security module connected to the host, and the host is booted in the decided booting mode.

Abstract: Provided are a method and a device for booting a host embodying a downloadable conditional access system (DCAS), wherein one of a plurality of pre-determined booting modes is decided as a booting mode of the host based on first information indicating whether a host can communicate with a broadcasting service provider and second information indicating whether a software-based security client providing information required for decrypting broadcasting data is installed to a hardware-based security module connected to the host, and the host is booted in the decided booting mode.

Abstract: A plurality of conditional access (CA) clients are needed to receive services from a plurality of service, where the CA clients respectively correspond to the service providers. Thus, the CA clients should be installed into a broadcast receiver, and in this case, a method of managing the CA clients is needed. Provided are a method and apparatus for processing broadcast data by using a security client. The method includes determining a first security client based on a security client list, where the first security client is used to decrypt encrypted broadcast data and the security client list comprises information regarding each of security clients available which provide information necessary to decrypt the encrypted broadcast data; and decrypting the encrypted broadcast data by using the first security client. Accordingly, it is possible to allow a user to receive various services.

Abstract: A method of communicating with a host in a security module providing information necessary for decrypting encrypted broadcast data received by the host, includes if an event occurs, characterizing the event as an event that a user of the host is to be notified about with regard to the decryption of the encrypted broadcast data, generating a user notification message including information about the event that occurred; and transmitting the user notification message to the host.

Abstract: Disclosed is a method of providing additional content in a digital broadcast reception apparatus, the method including receiving a locator of additional content from a broadcast server while a user watches a broadcast program, receiving an instruction to insert the additional content from the broadcast server, receiving and reproducing the additional content from a content providing server designated by the locator, and switching back to the broadcast program. Thus, it is not necessary to allocate a separate channel and/or to switch channels for providing additional content.

Abstract: Provided are a method and a device for booting a host embodying a downloadable conditional access system (DCAS), wherein one of a plurality of pre-determined booting modes is decided as a booting mode of the host based on first information indicating whether a host can communicate with a broadcasting service provider and second information indicating whether a software-based security client providing information required for decrypting broadcasting data is installed to a hardware-based security module connected to the host, and the host is booted in the decided booting mode.