Abstract: In one example embodiment, a method performed by a server may include: receiving user videos from a plurality of devices; generating conference video data that includes at least one portion of the user videos; assigning a first portion of the at least one portion a first security attribute for a first device that has a first security level; generating first security data corresponding to the first security attribute; streaming, to the first device, the conference video data with the first security data; and streaming, to a second device having a second security level higher than the first security level, the conference video data without the first security data.

Abstract: In one example embodiment, a method performed by a server may include: receiving user videos from a plurality of devices; generating conference video data that includes at least one portion of the user videos; assigning a first portion of the at least one portion a first security attribute for a first device that has a first security level; generating first security data corresponding to the first security attribute; streaming, to the first device, the conference video data with the first security data; and streaming, to a second device having a second security level higher than the first security level, the conference video data without the first security data.

Abstract: In one example embodiment, a method performed under control of a server includes: receiving a user video from a transmitting device; generating conference video data that includes at least one portion of the user video; assigning, in accordance with a security level of a receiving device, a first portion of the conference video data a first security attribute; generating first security data corresponding to the first security attribute; and streaming, to the receiving device, the conference video data that includes the at least one portion of the user video and the first security data.

Abstract: In one example embodiment, a method performed under control of a server includes: receiving a user video from a transmitting device; generating conference video data that includes at least one portion of the user video; assigning, in accordance with a security level of a receiving device, a first portion of the conference video data a first security attribute; generating first security data corresponding to the first security attribute; and streaming, to the receiving device, the conference video data that includes the at least one portion of the user video and the first security data.

Abstract: An apparatus and method of integrated billing management by real-time session management, and a computer readable medium thereof are provided. The integrated billing management apparatus performs billing management functions, that is, analyzes various messages related to the billing service request, manages sessions in real time, processes reliable billing information data and generates formulaic billing information. Then, the integrated billing management apparatus transmits the result of processing the billing service to the user terminal through the network access device. Therefore, the customer discontents can be responded in real time and customized billing management service based on the amount of service used can be provided form all wired and wireless network services.

Abstract: An apparatus and method of integrated billing management by real-time session management, and a computer readable medium thereof are provided. The integrated billing management apparatus performs billing management functions, that is, analyzes various messages related to the billing service request, manages sessions in real time, processes reliable billing information data and generates formulaic billing information. Then, the integrated billing management apparatus transmits the result of processing the billing service to the user terminal through the network access device. Therefore, the customer discontents can be responded in real time and customized billing management service based on the amount of service used can be provided form all wired and wireless network services.

Abstract: An image data providing system and a method thereof. A group of pictures and detailed information for a scene are stored in a first storing portion, while a lookup table, including location information and a frame number of an image of a certain format within the group of pictures, is stored in a second storing portion. When receiving from user information about a reproducing point of a request image, a data providing portion searches the lookup table for a location of a file about the image of a certain format according to information about the time, i.e., the reproducing point. The data providing portion extracts image data from the first storing portion based on the searched location of the file and provides the user with the extracted image data. Based on the location information and the frame number of the intra picture that is written in advance according to the time, the image data corresponding to the user requested location is rapidly extracted and provided to the user.