Abstract: Disclosed is a virtual desktop service method. The virtual desktop service method includes configuring and measuring users and resources according to predetermined criteria, copying operating system files and data files to be provided to the users before use request, receiving request to use a virtual machine from any one of the users and performing user authentication and work approval, and providing an operating system file and a data file of the any one of the users, among the copied operating system files and data files, to the any one of the users according to the use request to transmit a virtual desktop environment. Consequently, the virtual desktop service method performs a service to provide a virtual machine to a user in real time.

Abstract: Disclosed is a multi-point connection control apparatus and method for a video conference service. The apparatus may include a front end processor configured to receive video streams and audio streams from user terminals of participants using the video conference service, and generate screen configuration information for providing the video conference service based on the received video streams and the received audio streams, and a back end processor configured to receive at least one of the video streams, at least one of the audio streams, and the screen configuration information from the front end processor, and generate a mixed video for the video conference service based on the received at least one of the video streams, at least one of the audio streams, and the screen configuration information.

Abstract: Provided is a virtual desktop service, and disclosed is a system for providing a server virtual machine, including: a client configured to receive allocation of a virtual machine for using a virtual desktop service; a connection broker configured to control a type of virtual machine to be allocated to be classified according to user terminal registration information of the client, any one operation server to be selected among a plurality of operation servers, and the virtual machine to be allocated; the plurality of operation servers configured to provide the client with a virtual machine under a control of the connection broker; and a shared storage configured to store data related to the client for providing the virtual machine, and provide the stored data to the operation servers, a method of providing a server virtual machine, and a server device supporting the same.

Abstract: An apparatus and method for providing an adaptive virtual desktop operating system (OS) service is provided. The method for providing an adaptive virtual desktop OS service in a virtual OS service platform server, which provides a virtual OS service platform service suitable for a terminal connected through a network, includes collecting and analyzing environmental information including at least one among hardware specification information, computing resource information, and network traffic information of the terminal, computing resource information of a guest OS operated in a virtual machine generated by the virtual OS service platform server; determining an environmental setting factor for structuring a user interface (UI) suitable for the terminal with respect to the virtual machine based on the analyzed result; and adaptively generating or changing a UI of the virtual OS service platform provided to the terminal based on the determined environmental setting factor.

Abstract: Disclosed herein are a method and architecture capable of efficiently providing virtual desktop service. A service architecture for virtual desktop service according to the present invention includes a connection broker configured to perform authentication, manage virtual machines, and perform a server monitoring and protocol coordination function, a resource pool configured to manage software resources that are delivered to a specific virtual machine in a streaming form on a specific time in order to provide on-demand virtual desktop service and are executed on the specific virtual machine and to provide provision information about the managed software resources in response to a request from the connection broker, and a virtual machine infrastructure configured to support hardware resources, generate virtual machines in which the software of a user terminal is executed, and provide the generated virtual machine as virtual desktops.

Abstract: Provided herein is a platform application service of a virtual desktop using virtualization technology, and more particularly, a virtual desktop providing method and virtual desktop providing server that support a lightweight protocol technology so that a virtual desktop service may be used smoothly even where a network environment is poor when providing a virtual desktop service, the virtual desktop providing method including collecting state information of a client terminal being received from the client terminal and state information of the virtual desktop providing server; determining an environment factor for a virtual desktop of the client terminal based on the state information of the client terminal and the state information of the virtual desktop providing server; and applying the environment factor and controlling the virtual desktop being serviced to the client terminal.

Abstract: Provided is a method of providing a virtual machine image file in a cloud computing-based virtual desktop infrastructure. This method includes moving a golden image, an initial image provided from a shared storage, to a virtual machine driving server, converting the golden image into an image of a copy-on-write file format, and storing the same in a cache; allocating the converted virtual machine image to a virtual machine, and storing images of each virtual machine in the shared storage and managing the same to recover a virtual desktop when a disaster occurs. The method includes generating only data changed by the virtual machine, as a virtual machine image file, and managing the same, and hierarchically configuring a virtual machine image file based on a base image and storing the same in a cache memory in order to increase a loading rate of the virtual machine image file including the base image-based virtual machine image file.

Abstract: Provided is a virtual desktop service, and disclosed is a system for providing a server virtual machine, including: a client configured to receive allocation of a virtual machine for using a virtual desktop service; a connection broker configured to control a type of virtual machine to be allocated to be classified according to user terminal registration information of the client, any one operation server to be selected among a plurality of operation servers, and the virtual machine to be allocated; the plurality of operation servers configured to provide the client with a virtual machine under a control of the connection broker; and a shared storage configured to store data related to the client for providing the virtual machine, and provide the stored data to the operation servers, a method of providing a server virtual machine, and a server device supporting the same.

Abstract: Disclosed is a virtual desktop service method. The virtual desktop service method includes configuring and measuring users and resources according to predetermined criteria, copying operating system files and data files to be provided to the users before use request, receiving request to use a virtual machine from any one of the users and performing user authentication and work approval, and providing an operating system file and a data file of the any one of the users, among the copied operating system files and data files, to the any one of the users according to the use request to transmit a virtual desktop environment. Consequently, the virtual desktop service method performs a service to provide a virtual machine to a user in real time.

Abstract: A method and an apparatus for providing a virtual desktop service to provide an optimal virtual desktop service in accordance with distances between virtualization servers and a user are provided. A virtual desktop service suitable for a request of the user is provided to the user so that loads of servers may be dispersed and power usage of the servers may be minimized. That is, in an environment where the virtualization servers that provide the virtual desktop service are locally dispersed, the virtual machines may be allocated to a virtualization server with a shortest network delay based on network distances from the virtualization servers to the user. In addition, after a server power usage amount is predicted in accordance with a virtual machine usage type of the user, a virtualization server may be selected in accordance with the prediction result.

Abstract: Disclosed herein are a method and architecture capable of efficiently providing virtual desktop service. A service architecture for virtual desktop service according to the present invention includes a connection broker configured to perform authentication, manage virtual machines, and perform a server monitoring and protocol coordination function, a resource pool configured to manage software resources that are delivered to a specific virtual machine in a streaming form on a specific time in order to provide on-demand virtual desktop service and are executed on the specific virtual machine and to provide provision information about the managed software resources in response to a request from the connection broker, and a virtual machine infrastructure configured to support hardware resources, generate virtual machines in which the software of a user terminal is executed, and provide the generated virtual machine as virtual desktops.

Abstract: A calculation simulation system which performs a calculation simulation using computing resources includes: a simulation condition setting unit that sets simulation conditions based on input from a user; a calculation simulation performing unit that performs the calculation simulation; a simulation result storage unit that stores already-performed simulation conditions, simulation results, and performance records; and a simulation function performing unit that provides the already-performed simulation results, if the simulation conditions input by the user are the same as the already-performed simulation conditions. Further, the calculation simulation performing unit performs calculation simulation using the computing resources under the simulation conditions input by the user, if the simulation conditions input by the user are different from the already-performed simulation conditions.