KR101553929B1 - Virtual desktop infrastructure system for supporting media redirection and media transmission method using thereof - Google Patents

Abstract

The present invention relates to a virtual desktop infrastructure (VDI) system supporting a media redirection and a media transmitting and receiving method using the same. The present invention provides the virtual desktop infrastructure system supporting the media redirection which includes a VDI server which drives a media transmission and reception application, transmits a media redirection command to a VDI terminal using a media redirection command set, and controls the transmission and reception of a media stream between the VDI terminals, and the VDI terminal which drives a virtual desktop application, transmits the media stream inputted from a media input device by using the media redirection command, and outputs the media stream through an output device.

Description

TECHNICAL FIELD [0001] The present invention relates to a virtual desktop infrastructure system supporting media redirection, and a media transmission / reception method using the virtual desktop infrastructure system.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a virtual desktop infrastructure system and a media transmission / reception method using the virtual desktop infrastructure system, and more particularly, to a virtual desktop infrastructure system supporting media redirection and a media transmission / reception method using the virtual desktop infrastructure system.

Server virtualization technology is a technology that logically divides a physical computing device of a server to create and operate a plurality of logical servers, a virtual machine. A virtual desktop infrastructure (VDI) system is a system in which a PC desktop environment is built in a virtual machine in a server virtualization environment and services are provided so that a remote terminal can use a desktop of a virtual machine. A virtual desktop input / A technology that can be expressed and controlled on a remote terminal by extending it to a network is called a desktop virtualization protocol or a display protocol.

Conventional virtual desktop transmission technology transmits input signals of a VDI terminal, such as a serial device such as a keyboard, a mouse and a tablet, a USB device interface, a media input device such as a microphone, a webcam and a camera to a server, And transmits the processed result to the remote VDI terminal in the form of audio, video, etc., and displays it on the output device connected to the remote VDI terminal.

Since the input stream (video, audio, etc.) of the media input device of the VDI terminal is processed in the virtual machine of the server through the display protocol when the media stream is transmitted and received between the VDI terminals in the conventional VDI system, And an additional delay (hairpin phenomenon) such as an arithmetic time such as decoding and a data transfer time have occurred. Therefore, in the conventional VDI system, application programs such as Internet telephony and video call requiring real-time multimedia transmission processing such as Voice over Internet Protocol (VoIP), real-time transport protocol (RTP), and session initiation protocol There is a problem with.

Multi-media redirection refers to a method in which a server outputs a variety of content such as images, moving pictures, and audio, and then outputs the media stream of the content directly to the client, It is the technology that the client reproduces the content directly. For example, in order to output an image, which is server media content stored in a server, to a client, a server media content is rendered and then captured. When the captured image is transmitted to a client, . If the server media content stored in the server is a moving image, the moving image server media content is transmitted to the client as a stream, and the client decodes and renders the stream.

According to the multimedia redirection method, in order to reproduce a moving image, which is client media content stored in the local storage of the client, the client media content stored in the local storage of the client is transmitted to the server, the server transmits the content to the client, And reproduces the client media content by decoding and rendering the stream.

As a prior art related to the present invention, Japanese Patent Application Laid-Open No. 10-2014-0117889 (entitled "Client Device, Server Device, Multimedia Redirection System and Method," published October 8, 2014) -2014-0125930, entitled SYSTEM AND METHOD FOR PROVIDING VIRTUAL DESKTOP SERVICES USING CACHE SERVER, DISCLOSURE OF THE INVENTION THEREOF, DISCLOSURE OF THE INVENTION THEREOF, U.S. Patent Application No. 10-2012-0083801, entitled " An apparatus and method for pre-processing multimedia data for virtual machines, published on July 26, 2012).

The VDI terminal transmits and receives a media stream to and from a VDI terminal at a remote location by using a media redirection command transmitted from the VDI server. It is possible to solve the hair pin phenomenon by reducing the number of times of transmission of the media stream and the amount of calculation processing and thus it is possible to solve the problem of the hair pin by applying the VDI system to the output field of the VDI system A virtual desktop infrastructure system that supports media redirection, and a media transmission / reception method using the virtual desktop infrastructure system, which can extend real-time media transmission and processing to areas such as Internet telephony and video communication requiring processing.

According to an aspect of the present invention, there is provided a virtual desktop infrastructure system supporting media redirection,

As a Virtual Desktop Infrastructure (VDI) system,

A VDI server that drives a media transmission / reception application and transmits a media redirection command to a VDI terminal using a media redirection command set to control transmission / reception of a media stream between the VDI terminals; And

A VDI terminal for driving a virtual desktop application, transmitting a media stream input from a media input device using the media redirection command, receiving the media stream and outputting the media stream through an output device,

The VDI terminal,

A media remote transmitter for encoding and transmitting a media stream by a media input device of the VDI terminal, or receiving and decoding a media stream from a remote VDI terminal;

A media view window module for outputting a media stream transmitted and received by the media remote transmitter through an output device; And

And a media redirection control module for setting and controlling transmission and reception of the media remote transmitter using the media redirection command and setting the media view window module.

Preferably, the VDI server comprises:

An application layer that includes a media redirection instruction set and calls an API for hypervisor communication for connection of media redirection; And

And a server display transmission layer that receives the media redirection command and transmits the media redirection command to the VDI terminal through a hypervisor communication device driver of the operating system and a virtual device for hypervisor communication of the virtual machine.

Preferably,

The VDI server and the VDI terminal process the media redirection through a display protocol, and the display protocol may include a media redirection instruction set.

Preferably, the VDI terminal comprises:

And a media redirection instruction decoder for receiving and decoding the media redirection command from the VDI server.

According to an aspect of the present invention, there is provided a method of transmitting / receiving media using a virtual desktop infrastructure system supporting media redirection,

A method of transmitting and receiving media using a virtual desktop infrastructure (VDI) system,

(1) the VDI server drives the media transmission / reception application and sets the media redirection of the VDI terminal;

(2) the VDI server transmitting a media redirection command to the VDI terminal;

(3) the VDI terminal activating a virtual desktop application and setting media remote transmitter connection information using the media redirection command;

(4) the VDI terminal encodes a media stream and transmits the media stream to a VDI terminal at a remote location, receiving and decoding a media stream from the remote VDI terminal; And

(5) The VDI terminal outputs the media stream transmitted and received in the step (4) through an output device.

Preferably, in the step (2)

The VDI server transmits the media redirection command to control media transmission of the VDI terminal,

(a) driving a media transmission application;

(b) detecting a media redirection function of the VDI terminal using a media redirection function confirmation command;

(c) if the media redirection function is detected, collecting the network connection information, the media compression algorithm and the compression rate using the media redirection information confirmation command;

(d) delivering the collected network connection information, a media compression algorithm and a compression rate to the VDI terminal, and requesting setting of a media redirection environment using a media redirection environment setting command;

(e) transmitting the output coordinates and size to the VDI terminal using a media view window setting command and requesting setting of a media redirection view window;

(f) requesting the media receiving application to prepare to receive the media remote sender, and delivering the media compression algorithm and the compression rate to be transmitted; And

(g) requesting the media remote sender of the VDI terminal to start transmission using the media redirection transmission control command.

More preferably, in the step (c)

The network connection information of the media remote transmitter of the VDI terminal may be requested to the media receiving application to collect the network connection information.

Preferably, in the step (2)

The VDI server transmits the media redirection command to control media reception of the VDI terminal,

(A) running a media receiving application;

(B) detecting a media redirection function of the VDI terminal using a media redirection function confirmation command;

(C) if the media redirection function is detected, collecting the network connection information, the media compression algorithm and the compression rate using the media redirection information confirmation command;

(D) transmitting network connection information in response to a request for network connection information of a media remote transmitter of the VDI terminal of the media transmission application;

(E) receiving a reception preparation request signal of the media remote transmitter of the media transmission application;

(F) transmitting a compression algorithm and a compression rate of a media stream to be received to the VDI terminal, and requesting setting of a media redirection environment using a media redirection configuration command;

(G) transmitting the output coordinates and size to the VDI terminal using a media view window setting command and requesting setting of a media redirection view window; And

(H) requesting the media remote sender to prepare for reception using the media redirection reception preparation command, and responding to the media transmission application to indicate ready reception, thereby controlling the reception of the media.

According to the virtual desktop infrastructure system supporting the media redirection proposed in the present invention and the media transmission / reception method using the same, the VDI terminal transmits / receives the media stream to / from the remote VDI terminal using the media redirection command transmitted by the VDI server, Since the media stream is outputted to the output device of the VDI terminal, it is not necessary to pass the VDI server when transmitting / receiving the media between the VDI terminals, so that the number of times of transmission of the media stream and the processing amount of the media stream can be significantly reduced, Can be extended to areas such as Internet telephony and video communication where real-time media transmission and processing is required.

1 illustrates a configuration of a virtual desktop infrastructure system supporting media redirection according to an embodiment of the present invention;
2 illustrates a detailed configuration of a VDI server in a virtual desktop infrastructure system supporting media redirection according to an embodiment of the present invention.
3 illustrates a detailed configuration of a VDI terminal in a virtual desktop infrastructure system supporting media redirection according to an embodiment of the present invention.
4 is a flowchart illustrating a media transmission / reception method using a virtual desktop infrastructure system supporting media redirection according to an embodiment of the present invention.
FIG. 5 is a detailed flowchart for controlling media transmission in a media transmission / reception method using a virtual desktop infrastructure system supporting media redirection according to an embodiment of the present invention. FIG.
FIG. 6 is a detailed flowchart for controlling media reception in a media transmission / reception method using a virtual desktop infrastructure system supporting media redirection according to an embodiment of the present invention; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

1 is a diagram illustrating a configuration of a virtual desktop infrastructure (VDI) system 10 supporting media redirection according to an embodiment of the present invention. 1, the virtual desktop infrastructure system 10 supporting media redirection according to an exemplary embodiment of the present invention may include a VDI server 100 and a VDI terminal 200, The virtual desktop can be implemented using the protocol 300.

That is, the present invention provides a virtual desktop service in which a VDI server 100 operates a virtual machine to provide a virtual desktop service to the VDI terminal 200, while two or more VDI servers 100 operate on each VDI server 100 The operating system can negotiate a media redirection with an application to which Internet telephony or video communication is to be connected and set up for redirecting media to each VDI terminal 200. [ A plurality of VDI terminals 200 can transmit and receive a media stream directly between the VDI terminals 200 without using the VDI server 100 by using the set media redirection connection information, The phenomenon can be solved.

Hereinafter, a detailed configuration of a virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention will be described in detail with reference to FIG.

The VDI server 100 may control media transmission / reception between the VDI terminals 200 by driving a media transmission / reception application and transmitting a media redirection command to the VDI terminal 200 using the media redirection command set. The VDI server 100 may allow the connection of the VDI terminal 200 and provide a virtual desktop service to the VDI terminal 200 by operating a virtual machine.

The VDI server 100 can install and operate an application for controlling the media transmission / reception of the VDI terminal 200 on a virtual machine, and can transmit a media transmission application for controlling transmission and a media reception application Respectively. The media transmission application and the media reception application can interact with each other to transmit the media stream of the VDI terminal 200 to the remote VDI terminal 200 and output the media stream to the output device.

The VDI terminal 200 may drive a virtual desktop application, transmit a media stream input from the media input apparatus using the media redirection command, receive the media stream, and output the received media stream through the output apparatus. That is, a virtual desktop application can be installed and operated in the VDI terminal 200, and the virtual desktop service can be used through the virtual machine by accessing the VDI server 100. The VDI terminal 200 and the media The stream can be transmitted and received in real time and output. The detailed configuration of the VDI terminal 200 will be described later in detail with reference to FIG.

As shown in FIG. 1, the VDI server 100 and the VDI terminal 200 may implement media redirection through the display protocol 300, and the display protocol 300 may include a media redirection instruction set. Table 1 below shows an example of a media redirection command set.

2 is a diagram illustrating a detailed configuration of a VDI server 100 in a virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention. 2, the VDI server 100 of the virtual desktop infrastructure system 10 supporting media redirection according to an exemplary embodiment of the present invention includes an application layer 110 and a server display transport layer 120 And the like.

The application layer 110 may include a set of media redirection instructions and may call APIs for hypervisor communication for connection of media redirection. 1, the application layer 110 includes an application layer 110 included in the VDI server 100 of the VDI terminals 200 to transmit / receive media, Can negotiate mutual media redirection.

More specifically, the application layer 110 controls the transmission and reception of media streams by invoking a Media Redirection API using APIs for media redirection application applications and hypervisor communications, and passing a pre-redirect command using the media redirection instruction set can do. At this time, the media redirection API can be called during the interaction of the media redirection application application and the API for hypervisor communication.

The server display transmission layer 120 may receive the media redirection command through the hypervisor communication device driver of the operating system and the virtual device for hypervisor communication of the virtual machine and transmit the media redirection command to the VDI terminal 200. That is, the media redirection command of the application layer 110 may be transmitted through the operating system and the virtual machine, and may be transmitted to the client display transport layer of the VDI terminal 200 through the server display transport layer 120. At this time, the client display transmission layer of the server display transmission layer 120 and the VDI terminal 200 can transmit and receive a media redirection command through the display protocol 300. [

3 is a diagram illustrating a detailed configuration of a VDI terminal 200 in a virtual desktop infrastructure system 10 supporting media redirection according to an exemplary embodiment of the present invention. 3, the VDI terminal 200 of the virtual desktop infrastructure system 10 supporting media redirection according to an exemplary embodiment of the present invention includes a media remote transmitter 210, a media view window module 220, And a media redirection control module 230. The media redirection command decoder 240 may further include a media redirection command decoder.

The media remote transmitter 210 may encode and transmit a media stream by the media input device of the VDI terminal 200 or may receive and decode the media stream from the remote VDI terminal 200. [ Here, the media input device may be a camera, a microphone, and the media by the media input device may be various multimedia such as image, audio, and moving picture used for Internet telephone or video call. The media remote transmitter 210 may encode and decode the media stream protocol and may encode and decode the media stream of the VDI terminal 200 and may synchronize.

The media view window module 220 may output the media stream transmitted and received by the media remote transmitter 210 through the output device. That is, the media view window module 220 can output a media stream transmitted and received by the VDI terminal 200 in various multimedia formats such as image, audio, and moving image, and can generate and arrange an output window in which the media is output .

The media redirection control module 230 may use the media redirection command to set up and control the transmission and reception of the media remote transmitter 210 and to set the media view window module 220. That is, the media redirection control module 230 may control the media remote transmitter 210 and the media view window module 220.

The media redirection instruction decoder 240 can receive and decode the media redirection instruction from the VDI server 100. [ That is, the media redirection command decoder 240 decodes the media redirection command received from the server display transmission layer 120 of the VDI server 100 through the display protocol 300 and transmits the decoded media redirection command to the media redirection control module 230 , The media redirection control module 230 may control the media remote transmitter 210 and the media view window module 220 using decoded media redirection commands.

4 is a flowchart illustrating a media transmission / reception method using a virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention. 4, a method of transmitting and receiving media using a virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention includes the steps of driving a media transmission / reception application, (Step S110), the VDI server 100 transmits a media redirection command to the VDI terminal 200 (S120), and the VDI terminal 200 drives the virtual desktop application to issue a media redirection command The VDI terminal 200 encodes the media stream and transmits the media stream to the VDI terminal 200 at the remote location and sets the connection information of the media remote transmitter 210 to the media remote transmitter 210 at step S130. (S140) of receiving and decoding the received media stream, and outputting the media stream transmitted and received through the output apparatus (S150).

In step S110, the VDI server 100 may drive the media transmission / reception application and set the media redirection of the VDI terminal 200. [ That is, the VDI server 100 can use the media sending application and the media receiving application on the virtual machine to set the media redirection of the VDI terminal 200, wherein the media redirection instruction set can use the stored hypervisor communication API. In step S110, media redirection may be established through negotiation between the application layer 110 of the VDI server 100 of the VDI terminals 200 to which a media stream is to be transmitted.

In step S120, the VDI server 100 may transmit a media redirection command to the VDI terminal 200. [ In step S120, the display protocol 300 may be used for transmission of the media redirection command. At this time, the redirection command transmitted to the VDI terminal 200 may be as shown in Table 1. Depending on the type of command, the VDI terminal 200 may process steps S130 to S150 which will be described in detail below.

In step S130, the VDI terminal 200 can drive the virtual desktop application and set the connection information of the media remote transmitter 210 using the media redirection command. At this time, the virtual desktop application may be already activated before step S130, and in step S130, the connection information of the media remote transmitter 210 may be set to set the environment for media redirection.

In step S140, the VDI terminal 200 encodes the media stream and transmits the media stream to the VDI terminal 200 at the remote location, and receives and decodes the media stream from the VDI terminal 200 at the remote location. That is, in step S140, the VDI terminal 200 transmits the media stream to the remote VDI terminal 200, or receives the media stream transmitted by the remote VDI terminal 200, The transmission and reception of the media stream between the terminals 200 may be directly processed.

More specifically, in the transmission process, the media remote transmitter 210 can encode and transmit a media stream input by the media input device of the VDI terminal 200. [ On the other hand, in the receiving process, the media remote transmitter 210 of the VDI terminal 200 can receive and decode the media stream transmitted by the remote VDI terminal 200. For transmission and reception of a media stream processed in step S140, a media transmission dedicated protocol may be used.

In step S150, the VDI terminal 200 can output the media stream transmitted and received in step S140 through the output apparatus. That is, the media view window module 220 of the VDI terminal 200 can output the media stream received from the remote VDI terminal 200 through the output device. In accordance with the embodiment, the media view window module 220 of the VDI terminal 200 Can also output through the output device.

As described above, in the virtual desktop infrastructure system 10 supporting the media redirection according to the embodiment of the present invention and the media transmission / reception method using the same, in order to transmit / receive media between the VDI terminals 200, Since there is no process of inputting a media stream from the media input device to the virtual desktop application and outputting the media stream from the virtual desktop application to the media output device of the VDI terminal 200, the hair pin phenomenon occurring in this process can be eliminated .

FIG. 5 is a detailed flowchart for controlling media transmission in a media transmission / reception method using a virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention. 5, in the media transmission / reception method using the virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention, in step S120, the VDI server 100 transmits a media redirection command The media transmission / reception of the VDI terminal 200 is controlled, and transmission of the media can be controlled through steps S210 to S270, which will be described in detail below.

In step S210, the VDI server 100 can drive the media transmission application. At this time, the media transmission application can be installed and operated in the virtual machine of the VDI server 100. Steps S220 to S270 to be described in detail below can be implemented by the media transmission application driven in step S210.

In step S220, the VDI server 100 can detect the media redirection function of the VDI terminal 200 using the media redirection function check command (GET_MDIR_EXIST). As shown in FIG. 4, if the media redirection function is not detected, it can be terminated immediately.

In step S230, when the VDI server 100 detects the media redirection function, it can collect the network connection information, the media compression algorithm, and the compression ratio using the media redirection information confirmation command (GET_MDIR_INFO). That is, the VDI server 100 may request collection of media redirection information through the media transmission application and may obtain the network connection information, the media compression algorithm and the compression rate of the media remote transmitter 210 as a result upon request. At this time, in step S230, the network connection information of the media remote transmitter 210 of the VDI terminal 200 is requested to the media reception application of the remote location to collect network connection information.

In step S240, the VDI server 100 transmits the collected network connection information, the media compression algorithm and the compression rate to the VDI terminal 200, and requests the setting of the media redirection environment using the media redirection environment setting command (SET_MDIR_CONFIG) . The media redirection control module 230 of the VDI terminal 200 may set the media redirection environment according to the request of step S240 by setting the transmission / reception of the media remote transmitter 210 using the received information.

In step S250, the VDI server 100 may transmit the output coordinates and size to the VDI terminal 200 using the media view window setting command (SET_MDIR_VIEW_CONFIG), and request the setting of the media redirection view window. That is, the media redirection control module 230 of the VDI terminal 200 sets the media view window module 220 using the information received from the VDI server 100, Can be set.

In step S260, the VDI server 100 requests the media remote application 210 to prepare for reception by the remote media receiving application, and can transmit the compression algorithm and the compression rate of the media to be transmitted. That is, by using a media receiving application corresponding to the remote VDI terminal 200, information necessary for reception and decoding can be transmitted to the remote VDI terminal 200 so that the remote VDI terminal 200 can smoothly receive and decode the transmitted media. (200).

In step S270, the VDI server 100 may request the media remote transmitter 210 of the VDI terminal 200 to start transmission using the media redirection transmission control command (SET_MDIR_TX_CONTROL). The media remote transmitter 210 of the VDI terminal 200 may start transmitting the media stream in response to the request of step S270 and stop the transmission if a stop is requested.

FIG. 6 is a detailed flowchart for controlling media reception in a media transmission / reception method using a virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention. 6, in the media transmission / reception method using the virtual desktop infrastructure system 10 supporting media redirection according to an embodiment of the present invention, in step S120, the VDI server 100 transmits a media redirection command Reception of the media of the VDI terminal 200 is controlled, but the reception of the media can be controlled through steps S310 to S380, which will be described in detail below.

In step S310, the VDI server 100 can drive the media receiving application. At this time, the media receiving application may be installed in a virtual machine of the VDI server 100 and be driven. Steps S320 to S380 to be described in detail below can be implemented by the media receiving application driven in step S310.

In step S320, the VDI server 100 can detect the media redirection function of the VDI terminal 200 using the media redirection function confirmation command (GET_MDIR_EXIST). If the media redirection function is not detected, it can be terminated immediately.

In step S330, when the media redirection function is detected, the VDI server 100 can collect the network connection information, the media compression algorithm, and the compression ratio using the media redirection information confirmation command (GET_MDIR_INFO).

In step S340, the VDI server 100 may transmit the network connection information in response to the network connection information request of the media remote transmitter 210 of the VDI terminal 200 of the media transmission application. That is, if the media receiving application driven in step S310 is waiting for a request of the media remote transmitter 210 network connection information of the media transmission application and receives a request for network connection information from the remote media transmission application through step S230, In response to the request, the media receiving application of the VDI server 100 may send network connection information to the sending application of the media remote.

In step S350, the VDI server 100 may receive a reception preparation request signal of the media remote transmitter 210 of the media transmission application. That is, the media receiving application that has transmitted the network connection information in step S340 is waiting for the media remote transmitter 210 to prepare for reception preparation, and may be requested to prepare for reception from the remote media transmission application in step S260.

In step S360, the VDI server 100 may transmit the compression algorithm and the compression rate of the media stream to be received to the VDI terminal 200, and may request the setting of the media redirection environment using the media redirection environment setting command (SET_MDIR_CONFIG) . That is, upon reception of the reception preparation request signal of the media remote transmitter 210 in step S350, the media re-transmission control module 230 delivers the compression algorithm and the compression rate of the media stream to be received, Can be set.

In step S370, the VDI server 100 may transmit the output coordinates and size to the VDI terminal 200 using the media view window setting command (SET_MDIR_VIEW_CONFIG), and request the setting of the media redirection view window. In response to the request, the media redirection control module 230 of the VDI terminal 200 may configure the media view window module 220.

In step S380, the VDI server 100 requests the media remote transmitter 210 to prepare for reception using the media redirection reception preparation command (SET_MDIR_RX_READY), and responds to the media transmission application to indicate preparation for reception. According to the media redirection reception preparation command, the media remote transmitter 210 prepares for reception, and under the control of the media reception application, the media remote transmitter 210 can receive the media stream from the remote VDI terminal 200 .

Meanwhile, the present invention may include a computer-readable medium including program instructions for performing operations implemented in various communication terminals. For example, the computer-readable medium can be any suitable medium, such as magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD ROM, DVD, Magneto-optical media and hardware devices that are specially configured to store and execute program instructions such as ROM, RAM, flash memory, and the like.

Such computer-readable media may include program instructions, data files, data structures, etc., alone or in combination. The program instructions recorded on the computer-readable medium may be those specially designed and configured to implement the present invention or may be those known to those skilled in the computer software. For example, it may include machine language code such as that produced by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.

The present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics and scope of the invention.

10: VDI system according to an embodiment of the present invention
100: VDI server 200: VDI terminal
300: display protocol (300) 110: application layer
120: Server Display Transport Layer 210: Media Remote Transmitter
220: Media view window module 230: Media redirection control module
240: Media Redirection Instruction Decoder
S110: The VDI server drives the media transmission / reception application and establishes the media redirection of the VDI terminal
S120: The VDI server transmits a media redirection command to the VDI terminal
S130: The VDI terminal drives the virtual desktop application and sets the media remote transmitter connection information using the media redirection command
S140: the VDI terminal encodes the media stream and transmits it to the remote VDI terminal, and receives and decodes the media stream from the remote VDI terminal
S150: the VDI terminal outputs the media stream to be transmitted / received through the output device

Claims (8)

As a Virtual Desktop Infrastructure (VDI) system,
A VDI server 100 that drives a media transmission / reception application and transmits a media redirection command to the VDI terminal 200 using the media redirection instruction set 110 to control transmission / reception of a media stream between the VDI terminals 200; And
A VDI terminal (200) for driving a virtual desktop application, transmitting a media stream input from a media input device using the media redirection command, receiving the media stream and outputting the media stream through an output device,
The VDI terminal (200)
A media remote transmitter 210 for encoding and transmitting a media stream by the media input device of the VDI terminal 200, or receiving and decoding a media stream from the remote VDI terminal 200;
A media view window module 220 for outputting media streams transmitted and received by the media remote transmitter 210 through an output device; And
A media redirection control module (230) for setting up and controlling the transmission and reception of the media remote transmitter (210) using the media redirection command, and setting the media view window module (220)
The VDI server (100)
An application layer (110) that includes a media redirection instruction set and calls an API for hypervisor communication for connection of media redirection; And
And a server display transmission layer (120) for receiving the media redirection command through the hypervisor communication device driver of the operating system and the virtual device for hypervisor communication of the virtual machine and transmitting the received media redirection command to the VDI terminal A virtual desktop infrastructure system 10,
delete The method according to claim 1,
Characterized in that the VDI server (100) and the VDI terminal (200) process media redirection via a display protocol (300), the display protocol (300) comprising a media redirection instruction set (110) A virtual desktop infrastructure system (10).
The method of claim 1, wherein the VDI terminal (200)
Further comprising a media redirection instruction decoder (240) for receiving and decoding the media redirection command from the VDI server (100).
A method of transmitting and receiving media using a virtual desktop infrastructure (VDI) system,
(1) the VDI server 100 drives the media transmission / reception application and sets the media redirection of the VDI terminal 200;
(2) the VDI server 100 transmits a media redirection command to the VDI terminal 200;
(3) the VDI terminal 200 activating the virtual desktop application and setting the connection information of the media remote transmitter 210 using the media redirection command;
(4) the VDI terminal 200 encodes the media stream and transmits the media stream to the VDI terminal 200 at the remote site, and receives and decodes the media stream from the VDI terminal 200 at the remote site; And
(5) The VDI terminal 200 outputs the media stream transmitted and received in the step (4) through an output device,
In the step (2)
The VDI server 100 controls the media transmission of the VDI terminal 200 by transmitting the media redirection command,
(a) driving a media transmission application;
(b) detecting a media redirection function of the VDI terminal (200) using a media redirection function confirmation command;
(c) if the media redirection function is detected, collecting the network connection information, the media compression algorithm and the compression rate using the media redirection information confirmation command;
(d) delivering the collected network connection information, a media compression algorithm and a compression rate to the VDI terminal (200), and requesting a setting of a media redirection environment using a media redirection environment setting command;
(e) transmitting the output coordinates and size to the VDI terminal 200 using the media view window setting command and requesting the setting of the media redirection view window;
(f) requesting the media receiving application to prepare to receive the media remote transmitter 210, and delivering the media compression algorithm and the compression rate to be transmitted; And
(g) requesting the media remote sender (210) of the VDI terminal (200) to start transmission using a media redirection transmission control command, characterized by controlling transmission of the media A method for transmitting / receiving media using a virtual desktop infrastructure system (10).
delete 6. The method of claim 5, wherein in step (c)
(100) for supporting media redirection by requesting a media receiving application to request network connection information of a media remote transmitter (210) of the VDI terminal (200) and collecting the network connection information. / RTI >
6. The method according to claim 5, wherein in the step (2)
The VDI server 100 controls the media reception of the VDI terminal 200 by transmitting the media redirection command,
(A) running a media receiving application;
(B) detecting a media redirection function of the VDI terminal (200) using a media redirection function check command;
(C) if the media redirection function is detected, collecting the network connection information, the media compression algorithm and the compression rate using the media redirection information confirmation command;
(D) transmitting network connection information in response to a network connection information request of a media remote transmitter (210) of the VDI terminal (200) of a media transmission application;
(E) receiving a reception preparation request signal of the media remote transmitter (210) of the media transmission application;
(F) transmitting a compression algorithm and a compression rate of a media stream to be received to the VDI terminal (200), and requesting setting of a media redirection environment using a media redirection configuration command;
(G) delivering output coordinates and size to the VDI terminal (200) using a media view window setting command and requesting setting of a media redirection view window; And
(H) requesting the media remote sender (210) to prepare for reception using the media redirection reception preparation command, and responding to the media transmission application that the media preparation application is ready to receive, thereby controlling the reception of the media , And a method for transmitting / receiving media using a virtual desktop infrastructure system (10) supporting media redirection.

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