Abstract: A call recommendation system based on artificial intelligence is provided. The call recommendation system includes a data collecting unit, a matching time predicting unit, a price determining unit, and a final ranking determining unit. When a service is requested from a service user, the data collecting unit collects first past data indicating a past location of the service user, first present data indicating a present location of the service user, second past data indicating a past location of a service provider, and second present data indicating a present location of the service provider.

Abstract: A call recommendation system based on artificial intelligence is provided. The call recommendation system includes a data collecting unit, a matching time predicting unit, a price determining unit, and a final ranking determining unit. When a service is requested from a service user, the data collecting unit collects first past data indicating a past location of the service user, first present data indicating a present location of the service user, second past data indicating a past location of a service provider, and second present data indicating a present location of the service provider.

Abstract: Disclosed are a security processing system and method for HLS transmissions. An aspect of the invention provides a content key conversion device connected over a network to a content proxy device configured to provide encryption key information to a content operating device for a content received from a content provider device of an external network. The content key conversion device includes: a reception part that receives a double encryption key of a content from the content proxy device; an interface part that receives key decryption information corresponding to the double encryption key from an encryption key provider device of an external network; a decryption part that decrypts the double encryption key of the content using the key decryption information and thereby converts the double encryption key to an encryption key; and a transmission part that transmits the encryption key converted by the decryption part to the content proxy device.

Abstract: A method and device for controlling a download of a broadcast service security module are disclosed. In a method for controlling a download of a security module for a broadcast service in a user terminal connected to a service server and a security server through a network, a loader is downloaded by allowing the user terminal to be connected to the service server. The user terminal is connected to the security server through the loader. A bootloader is downloaded from the security server. A security module is downloaded from the security server by executing the bootloader.

Abstract: A method and device for controlling a download of a broadcast service security module are disclosed. In a method for controlling a download of a security module for a broadcast service in a user terminal connected to a service server and a security server through a network, a loader is downloaded by allowing the user terminal to be connected to the service server. The user terminal is connected to the security server through the loader. A bootloader is downloaded from the security server. A security module is downloaded from the security server by executing the bootloader.

Abstract: A method for receiving contents using a mobile terminal according to the present invention is provided. The method includes generating a security channel connected to system being in charge of a service and content protection (SCP) client through an agent downloaded and installed in a mobile terminal; downloading and installing one or multiple SCP client software of different kind from the system through the security channel generated by the agent; and playing back the service or content provided in protected state by a content provider among the one or multiple SCP client software of different kind by driving the decodable SCP client software.

Abstract: A method for recovering from a sun transit in a communication of a very small aperture terminal (VSAT) is disclosed, in which the sun transit outrage (STO) is prevented by using a sun transit recovering algorithm, thereby making it possible to apply the very small aperture terminal (VSAT) to the satellite communication. Generally, the communication system of the very small aperture terminal (VSAT) in which a still track satellite is used includes a VSAT central station (VCS), a network management system (NMS), and a VSAT remote station (VRS). In this communication system, when the sun reaches near the boresight axis of an antenna, an STO phenomenon occurs, with the result that the communication system is influenced by the additional noise power of the sun. Consequently, the reliability of the communication system drops to below an average quality which is tolerable in an antenna communication system.