WO2017119526A1 - High-resolution video server, and method for providing high-resolution video service - Google Patents

Abstract

According to one embodiment of the present invention, a video server comprises: a processor for executing a core engine and executing a video application; and a memory for storing a command for executing the core engine, wherein the command is a command for executing the core engine, executing the video application, sensing a call of an open API through the video application, generating result data by performing a function in accordance with the open API, transmitting the result data to the video application, and performing the video application through the result data.

Description

How to provide high resolution video server and high resolution video service

The present invention relates to a UHD (Ultra High Definition) video server technology, and more particularly, to a high resolution video server providing a video service for a high resolution image for broadcasting.

The video server encodes an image signal acquired by the camera in a format desired by a user to generate and store image data. The video server also decodes the stored video data and outputs the video data.

In the case of a general video server, a product of an external control method using an industry standard protocol or a native protocol is mainly used. Since the video server according to the external control method has limited functions provided by the video server, it cannot provide functions required by various users.

Accordingly, a video server is installed that allows a user to install an application on the video server to perform a function required by the user through the application. However, in the application-based video server, when the function is stopped due to an error in the application, the entire function of the video server is paralyzed.

An object of the present invention is to provide a video server and a video service providing method in which the entire function is not paralyzed even when an error of an application implemented on the video server occurs.

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

According to an aspect of the present invention, a processor for executing a core engine for providing a software development kit (SDK) service and executing a video application that calls the open API of the SDK; And a memory storing instructions for executing the core engine, wherein the instructions include: executing the core engine, executing the video application, detecting a call of the open API of the video application, and A command for generating a result data by performing a function according to the open API through a core engine, transmitting the result data from the core engine to the application, and providing a service according to the video application through the result data. A video server is provided.

When the call statement of the open API is executed in the video application, the command transmits a call signal according to the call statement to a receiving port of the core engine, and receives the call signal through a receiving port of the core engine. In this case, the command may determine that the call of the open API is detected.

The command may be a command for virtually transmitting the result data from the core engine to the video application through a named pipe protocol.

The video server further includes a communication interface for transmitting and receiving data by connecting a terminal and a communication network through a TCP / IP network, wherein the command receives an application code from the terminal and installs the video application according to the application code. May be a command.

The application code may include a call statement of the open API.

According to another aspect of the present invention, a video server provides a video service, the method comprising: executing a core engine for providing a software development kit (SDK) service; Executing a video application calling an open API of the SDK; Detecting a call of an open API of the video application; Generating result data by performing a function according to the open API in the core engine; 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.

Detecting a call of the open API of the video application, when the call statement of the open API is performed in the video application, transmits to the receiving port of the core engine, the call signal through the receiving port of the core engine If is received, it may be determined that the call of the open API is detected.

The transmitting of the result data from the core engine to the video application may be a step of virtually transmitting the result data from the core engine to the video application through a named pipe protocol.

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

The application code may include a call statement of 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, high-speed communication and stable operation based on named pipes between a core engine and an application may be performed in real time for high resolution video.

According to an embodiment of the present invention, a user may use an Open API to make an application suitable for a usage environment and use it on a video server.

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

2 conceptually illustrates a layer of a video server according to an embodiment of the present invention;

3 is a flowchart illustrating a method for providing a video service by a video server according to an embodiment of the present invention.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, numerals (eg, first, second, etc.) used in the description process of the present specification are merely identification symbols for distinguishing one component from another component.

In addition, in the present specification, when one component is referred to as "connected" or "connected" with another component, the one component may be directly connected or directly connected to the other component, but in particular It is to be understood that, unless there is an opposite substrate, it may be connected or connected via another component in the middle.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

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 may provide an image, data, etc. to a terminal through a known communication protocol, or may receive a code (hereinafter, referred to as an application code) of an application to be installed in the video server from the terminal.

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

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

The UHD encoding / decoding board 150 decodes image data and transmits a high resolution 4K video signal in SDI (Serial Digital Interface) format. In addition, the UHD encoding / decoding board 150 may receive and encode a high resolution video signal in an SDI format to generate image data and store the 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 diagram conceptually illustrating a layer of a video server according to an embodiment of the present invention.

The video server may be represented as 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 a log, and metadata storage for storing metadata about each image data.

The service layer 220 is a layer including a service provided by an operating system. For example, the service layer 220 may include a software development kit (SDK) that provides an API used by a video application, a system management service that manages hardware resources of a video server, and a media management that stores and provides image data stored in storage. The service may include a service corresponding to various functions provided by a video server, such as a log monitoring service for storing various events generated by the video server as a log, and an image transcoding service for transcoding image data to a specified standard. In addition, the service layer 220 may include a service other than the service illustrated in FIG. 2.

The application layer 230 is a layer containing a video application written in application code. In addition, the application layer 230 is a layer including a video application performed through an open API (Application Program Interface) provided by the SDK (Software Development Kit) of the core engine.

In this case, 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 may perform a service according to the open API, and provide the application with result data that is a result of the service execution. In addition, even if an error occurs during the execution of each application, since each application is performed through the open API, the error of the corresponding application does not occur when the entire video server providing the service service layer 220 is brought down. Therefore, even if a fatal error occurs in an application developed by a user or a third party developer other than the manufacturer of the video server, the stability of the video server may not be affected.

In addition, the service according to the open API provided by the service layer 220 may be provided through a named pipe, TCP / IP, and REST (Representational State Transfer) protocol. In particular, an open API having a large amount of data 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 that operate on the same device. Accordingly, data transmission between the core engine, which is a software module that provides a service of the service layer 220, and a video application may be performed virtually. . In other words, the data transmission between the core engine and the video application is not performed through the actual communication network, but is performed by virtual data transmission in the video server. Accordingly, data transmission between the service layer 220 and the application layer 230 may be made through a named pipe protocol that can be applied within a single physical machine. Accordingly, the video server may enable an application to use an open API for transmitting data between layers through the named pipe protocol, so that the processing of the high resolution image may be performed in real time. For example, the decoding API, which is an open API that decodes and outputs high resolution image data, decodes the image data stored in the storage 140 through the UHD encoding / decoding board 150, and uses the application pipe 230 through the named pipe protocol. It may be an API that provides a service for transmitting the decoded video signal in real time to the application (core engine). If the decoding API is an open API that transmits a video signal through TCP / IP, the decoding API cannot transmit a video signal having a large capacity per frame to an application in real time due to the bandwidth limitation of the TCP / IP protocol. . That is, even when data is virtually transmitted from the core engine to the application, it is impossible for the core engine to transmit a large-capacity (UHD-class) video signal to the application in real time through TCP / IP having a bandwidth limitation. That is, the video server according to an embodiment of the present invention provides a unique open API for transmitting data to an application through a named pipe protocol, thereby ensuring high independence between the application and the core engine while 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 decoding 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 the result data to a video application installed on the video server. In general, since open API has a purpose to provide services through the web, data is transmitted between the application and the core engine according to the TCP / IP or REST protocol. However, since the open API provided by the video server according to an embodiment of the present invention performs data transmission between software modules (applications and core engines) in a video server which is a single physical machine, the calling and transfer of result data is called a named pipe protocol. It can be configured to perform through.

3 is a flowchart illustrating a method of providing a video service by a video server according to an embodiment of the present invention. Each step described below is a process performed through each functional unit constituting a video server, or the subject of each step is collectively referred to as a video server for a concise and clear description of the invention.

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

In operation 320, the video server receives an application code from the terminal. At this time, the video server may install a video application corresponding to the application code.

In operation 330, the video server executes 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 virtually transmits the call signal of the open API to the reception port set corresponding to the core engine according to the execution of the video application. The video server may detect the call of the open API by checking a call signal virtually received by the reception 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 a video signal by decoding the video data according to a call of the open API.

In operation 360, the video server transmits data generated by the service performed in operation 350 (hereinafter, referred to as result data) from the core engine to the video application. For example, the video server may virtually transmit the image signal (result data) generated by decoding the image data from the core engine to the video application. At this time, the video server may transmit the resulting 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 protocol other than the pipe protocol.

In operation 370, the video server performs a function of a video application using the result data transmitted through the named pipe protocol. For example, if the above-described video application is an application that performs a function of playing a video received through a named pipe protocol through a specific interface, the video server may play the received video through a specified interface.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (10)

A processor configured to execute a core engine for providing a software development kit (SDK) service and to execute a video application calling an open API of the SDK; And A memory storing instructions for executing the core engine; Including, The command is Run the core engine, Launch the video application, Detect a call of the open API of the video application, Generates result data by performing a function according to the open API through the core engine, Send the result data from the core engine to the application, Providing a service according to the video application through the result data, The video server, characterized in that the command. The method of claim 1, The command is When a call statement of the open API is performed in the video application, the call signal according to the call statement is transmitted to the receiving port of the core engine, and when the call signal is received through the receiving port of the core engine, The video server, characterized in that the command that determines that a call to the open API is detected. The method of claim 2, The command is And a command for virtually transmitting the result data from the core engine to the video application through a named pipe protocol. The method of claim 1, Communication interface for transmitting and receiving data connected to the terminal through communication network Include more, The command is Receiving an application code from the terminal, And a command for installing the video application according to the application code. The method of claim 4, wherein The application code comprises a call statement of the open API. In the video server provides a video service, Executing a core engine providing a software development kit (SDK) service; Executing a video application calling an open API of the SDK; Detecting a call of an open API of the video application; Generating result data by performing a function according to the open API in the core engine; 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; Video service providing method comprising a. The method of claim 6, Detecting a call of the open API of the video application, When a call statement of the open API is performed in the video application, the call signal according to the call statement is transmitted to the receiving port of the core engine, and when the call signal is received through the receiving port of the core engine, and determining that a call of an open API has been detected. The method of claim 7, wherein The step of transmitting the result data from the core engine to the video application, And virtually transmitting the result data from the core engine to the video application through a named pipe protocol. The method of claim 6, Receiving an application code from the terminal; And And installing the video application according to the application code. The method of claim 9, The application code is a video service providing method comprising a call statement of the open API.

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