KR101741723B1 - Ultra high definition video server and method for providing ultra high definition vedio service - Google Patents

Abstract

A video server according to an embodiment of the present invention includes a processor for executing a core engine, a processor for executing a video application, and a memory for storing instructions for executing a core engine, Executing a function according to the open API to generate result data, transmitting the result data to the video application, and executing the video application through the result data, .

Description

TECHNICAL FIELD [0001] The present invention relates to a high-definition video server and a high-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a UHD (Ultra High Definition) video server technology, and more particularly, to a high definition video server that provides a video service for broadcasting high-resolution images.

The video server generates and stores image data by encoding the image signal acquired by the camera in a format desired by the user. Further, the video server decodes the stored video data and outputs it as a video signal.

In the case of a typical video server, it is dominated by externally controlled products using industry standard protocols or native protocols. The video server according to the external control method can not provide various functions requested by various users because the functions provided by the video server are limited.

As a result, a video server has been introduced in which a user installs an application on a video server and performs a function requested by the user through an application. However, the application-based video server has a problem that the function of the video server as a whole is paralyzed when the function is stopped due to an application error.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of providing a video server and a video service in which the entire function is not paralyzed even if an error occurs in an application implemented on the video server.

It is another object of the present invention to provide a video server and a video service providing method capable of performing various functions such as decoding of high-resolution video through an application in real time.

According to an aspect of the present invention, there is provided a mobile terminal comprising: a processor that executes a core engine that provides a software development kit (SDK) service and executes a video application that calls an open API of the SDK; And a memory for storing instructions for executing the core engine, the instructions executing the core engine, executing the video application, sensing a call of the open API of the video application, A core engine for performing a function according to the open API to generate result data, transmitting the result data from the core engine to the application, and providing a service according to the video application through the result data, And a video server.

Wherein the command transmits a call signal according to the call statement to a receive port of the core engine when the open API call statement is performed in the video application and the call signal is received through the receive port of the core engine It may be an instruction to determine that the call of the open API is detected.

The command may be an instruction to transfer the result data from the core engine to the video application virtually via a Named PIPE protocol.

Wherein the video server further comprises a communication interface connected to the terminal through a TCP / IP network to transmit and receive data, wherein the command comprises: receiving an application code from the terminal and installing the video application according to the application code; Lt; / RTI >

The application code may include a call to the open API.

According to another aspect of the present invention, there is provided a method of providing a video service by a video server, the method comprising: executing a core engine that provides a software development kit (SDK) service; Executing a video application calling an open API of the SDK; Detecting a call of the open API of the video application; Performing a function according to the open API in the core engine to generate result data; Transmitting the result data from the core engine to the video application; And providing a service according to the video application through the result data; A video service providing method is provided.

Wherein the step of detecting a call to the open API of the video application comprises the steps of transmitting to the receive port of the core engine when the call statement of the open API is performed in the video application, It may be determined that the call of the open API is detected.

The step of transferring the result data from the core engine to the video application may be a step of transferring the result data from the core engine to the video application virtually through a Named PIPE protocol.

The video service providing method includes: receiving application code from the terminal; And installing the video application according to the application code.

The application code may include a call to the open API.

According to an embodiment of the present invention, even if an application error occurs, the entire video service can be maintained.

According to an embodiment of the present invention, real-time processing of high-resolution video can be performed by high-speed communication based on named pipe (PIPE) and stable operation between core engine and application.

According to an embodiment of the present invention, a user can create an application suitable for a use environment using the Open API and use the application on a video server.

1 illustrates a video server in accordance with an embodiment of the present invention.
FIG. 2 conceptually illustrates a layer of a video server according to an embodiment of the present invention; FIG.
3 is a flowchart illustrating a method of providing a video service by a video server according to an embodiment of the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the number of the drawings.

1 is a diagram illustrating a video server according to an embodiment of the present invention.

Referring to FIG. 1, a video server according to an embodiment of the present invention includes a communication interface 110, a processor 120, a memory 130, and a storage 140.

The communication interface 110 can provide video, data, and the like to a terminal through a known communication protocol or receive a code (hereinafter referred to as application code) of an application to be installed in the video server from the terminal.

The processor 120 performs a video application according to an application code received from the terminal. At this time, the video application refers to an application designed to provide a video service such as a player, a recorder media browser and the like. In addition, the processor 120 may perform a function (process) according to the API stored in the storage 140 and the memory 130 according to an API call included in the application code. Accordingly, the processor 120 may perform a video application using the API to provide a service by performing a designated function through the video application. Although the single processor 120 is illustrated in FIG. 1, the video server may include a plurality of processors 120 according to an implementation method.

The memory 130 may store application code and commands necessary for the operation of the video server. The memory 130 may be a volatile memory such as a random access memory.

The storage 140 may store the application code and commands necessary for the operation of the video server and provide the application code or command to the memory 130. The storage 140 may store video data encoded with a video signal through the video application or may store video data received from the terminal through the communication interface 110. [ In addition, the storage 140 may store an operating system installed in the video server per se, and the processor 120 may operate in accordance with an operating system stored in the storage 140. Also, the storage 140 may store logs or metadata generated according to the execution of the operating system.

The UHD encoding / decoding board 150 decodes the image data and transmits the high-resolution 4K video signal in the SDI (Serial Digital Interface) format. In addition, the UHD encoding / decoding board 150 may receive the high-definition video signal in the SDI format and encode the same to generate image data and store the generated image data in the storage 140. In this case, the UHD encoding / decoding board 150 may include a hardware codec capable of supporting real-time encoding and decoding of the video signal.

2 is a conceptual illustration of a layer of a video server according to an embodiment of the present invention.

The video server may be represented by a storage layer 210, a service layer 220, and an application layer 230.

The storage layer 210 refers to a storage medium composed of one or more of the storage 140 and the memory 130. The storage layer 210 may include a video storage for storing image data, a log storage for storing logs, and a metadata storage for storing metadata for each image data.

The service layer 220 is a layer including a service provided by the operating system. For example, the service layer 220 may include a software development kit (SDK) that provides an API used in a video application, a system management service that manages hardware resources of the video server, a media management service that stores and provides image data stored in the storage, Service, a log monitoring service for storing various events generated in the video server as logs, and a video transcoding service for transcoding video data to a specified standard. In addition, the service layer 220 may include services other than those illustrated in FIG.

The application layer 230 is a layer including a video application written in application code. The application layer 230 is a layer that includes a video application that is executed through an open API (Application Program Interface) provided in the SDK (Software Development Kit) of the core engine.

At this time, each video application included in the application layer 230 may use an open API provided by the service layer 220. Each video application is programmed to call an open API, and the video server can perform the service according to the open API and provide the result data, which is the result of the service execution, to the application. In addition, even if an error occurs during execution of each application, since each application is executed through the open API, an error of the application does not occur when the entire video server providing the service service layer 220 is down. Therefore, even if a fatal error occurs in an application developed by a user other than the manufacturer of the video server or the third developer, the stability of the video server may not be affected.

Also, the service according to the open API provided by the service layer 220 can be provided through Named PIPE, TCP / IP, and REST (Representational State Transfer) protocols. In particular, an open API having a large amount of data to be transmitted in a call and response process such as encoding and decoding of a high-resolution image may be an API for transmitting data through a named pipe protocol. The service layer 220 and the application layer 230 are layers operated on the same device so that the data transfer between the core engine and the video application, which is a software module providing the service of the service layer 220, . That is, the data transmission between the core engine and the video application is not made via the real communication network but is made up of virtual data transmission within the video server. Accordingly, data transfer between the service layer 220 and the application layer 230 can be accomplished through a named pipe protocol that can be applied in a single physical machine. Therefore, the video server of the present invention can make the application to use the open API which transmits data between the layers through the named pipe protocol, so that the high-resolution image processing can be performed in real time. For example, the decryption API, which is an open API for decrypting and outputting high-resolution image data, decodes the image data stored in the storage 140 through the UHD encoding / decoding board 150, and transmits the decoded image data to the application layer 230 (Core Engine) application (core engine) in real time. If the decryption API is an open API for transmitting video signals over TCP / IP, the decryption API can not transmit a video signal having a large capacity per frame to an application for real-time playback due to the bandwidth limitation of the TCP / IP protocol . That is, even when data transmission is virtually performed from the core engine to the application, it is impossible for the core engine to transmit large-capacity (UHD-class) video signals in real time via TCP / IP with bandwidth limitation. That is, the video server according to an exemplary embodiment of the present invention provides a unique open API for transmitting data to an application through a named pipe protocol, thereby ensuring independence between the application and the core engine, Can be received and processed from the core engine in real time.

That is, the above-described decryption API is an open API that performs a process in a core engine of a video server, which is a single physical machine, and transmits result data to a video application installed on the video server. Generally, the open API has the purpose of providing services through the web, so data transmission between the application and the core engine is performed according to the TCP / IP or REST protocol. However, since the open API provided by the video server according to the embodiment of the present invention carries out the data transfer between the software module (application and core engine) in the video server which is a single physical machine, Lt; / RTI >

3 is a flowchart illustrating a method of providing a video service by a video server according to an exemplary embodiment of the present invention. Each step described below is referred to as a video server in order to explain a process performed through each functional unit constituting the video server or a simple and clear description of the invention.

Referring to FIG. 3, in operation 310, the video server executes the core engine to create a service layer 220.

In step 320, the video server receives the application code from the terminal. At this time, the video server can install a video application corresponding to the application code.

In step 330, the video server performs a video application corresponding to the application code.

In operation 340, the video server detects an open API call according to the execution of the video application. That is, the video server transmits the call signal of the open API to the reception port set corresponding to the core engine in accordance with the execution of the video application. The video server can detect the call of the open API by checking the virtually received call signal with the receiving port corresponding to the core engine.

In operation 350, the video server performs a service corresponding to the called open API. For example, when the called open API requests a service for generating a video signal by decoding the encoded video data, the video server may generate the video signal by decoding the video data according to the call of the open API.

In step 360, the video server transmits data (hereinafter referred to as result data) generated by the service performed in step 350 from the core engine to the video application. For example, the video server can virtually transfer the video signal (result data) generated by decoding the video data from the core engine to the video application. At this time, the video server can transmit the result data to the video application through the named pipe protocol. Of course, if the communication protocol specified in the open API called by the video application is REST or TCP / IP, the video server may transmit the result data to the video application through a specified protocol other than the pipe protocol.

In operation 370, the video server performs a function of a video application that uses result data transmitted through the named pipe protocol. For example, in the case where the above-described video application performs an operation of reproducing an image received through the named pipe protocol through a specific interface, the video server can reproduce the received image through the designated interface.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

Claims (10)

delete A processor that executes a core engine that provides a software development kit (SDK) service and executes a video application that calls an open API of the SDK; And
A memory for storing instructions for executing the core engine;
, ≪ / RTI &
Wherein the command comprises:
Executing the core engine,
Executing the video application,
Detecting a call of the open API of the video application,
Performing a function according to the open API through the core engine to generate result data,
Transmitting the result data from the core engine to the application,
Providing a service according to the video application through the result data,
When the call application of the open API is executed in the video application, a call signal according to the call statement is transmitted to the reception port of the core engine, and when the call signal is received through the reception port of the core engine, and the open API call is detected.
3. The method of claim 2,
Wherein the command comprises:
Wherein the command is a command for transferring the resultant data from the core engine to the video application virtually through a Named PIPE protocol.
A processor that executes a core engine that provides a software development kit (SDK) service and executes a video application that calls an open API of the SDK; And
A memory for storing instructions for executing the core engine;
A communication interface which is connected to the terminal through a communication network and transmits / receives data
, ≪ / RTI &
Wherein the command comprises:
Executing the core engine,
Receiving an application code from the terminal, installing the video application in accordance with the application code,
Executing the video application,
Detecting a call of the open API of the video application,
Performing a function according to the open API through the core engine to generate result data,
Transmitting the result data from the core engine to the application,
And providing a service according to the video application through the result data.
5. The method of claim 4,
Wherein the application code includes a call to the open API.
delete A method of providing a video service by a video server,
Executing a core engine that provides a software development kit (SDK) service;
Executing a video application calling an open API of the SDK;
Detecting a call of the open API of the video application;
Performing a function according to the open API in the core engine to generate result data;
Transmitting the result data from the core engine to the video application; And
And providing a service according to the video application through the result data,
Wherein the step of detecting a call to the open API of the video application comprises:
When the call application of the open API is executed in the video application, a call signal according to the call statement is transmitted to the reception port of the core engine, and when the call signal is received through the reception port of the core engine, and determining that a call to the open API is detected.
8. The method of claim 7,
Wherein the step of transmitting the result data from the core engine to the video application comprises:
And transmitting the resultant data from the core engine to the video application virtually through a Named PIPE protocol.
A method for providing a video service by a video server connected to a terminal through a communication network,
Executing a core engine that provides a software development kit (SDK) service;
Receiving an application code from the terminal;
Installing a video application according to the application code;
Executing a video application calling an open API of the SDK;
Detecting a call of the open API of the video application;
Performing a function according to the open API in the core engine to generate result data;
Transmitting the result data from the core engine to the video application; And
And providing a service according to the video application through the result data.
10. The method of claim 9,
Wherein the application code includes a call statement of the open API.

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