KR101509185B1 - Direct storage device per block units of video and audio data transmitted with avb based - Google Patents

Abstract

The present invention relates to a block-unit direct storage device for video and audio data transmitted based on AVB, and introduces the technique comprising: a shooting unit (110) which transmits video and audio data shot by multiple cameras to a video server (120), based on Audio Video Bridge (AVB); a video server (120) which receives the video and audio data, and transmits them to a network storage server (130), based on AVB; a AVB transfer processing module (130a) which receives the video and audio data transmitted based on AVB in real time from the video server (120), and processes the received video and audio data; and a network storage server (130) equipped with a AVB storage module (130b) which directly stores in block unit the video and audio data transmitted based on AVB in real time using the AVB transfer processing module (130a).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a direct storage unit for video and audio data transmitted on an AVB basis,

The present invention relates to a block-based direct storage apparatus for video and audio data transmitted on the basis of AVB, and more particularly, And a network storage server for receiving the video and audio data and transmitting the video and audio data obtained on the basis of AVB (Audio Video Bridge), and storing the video and audio data directly on a storage medium in units of blocks, To block-based direct storage of video and audio data.

In general, the importance of security for individual and public safety is felt and the effort is strengthened. In this process, the development and application of intelligent video security technology is increasing day by day.

In recent years, the demand for high quality video service through the network is gradually increasing by increasing the quality of the Internet access due to the rapid diffusion of the high-speed communication network.

Accordingly, the base technology development and the market share of the high-resolution image providing apparatus such as the IP camera based on the network as described above are gradually increasing.

Especially in big cities, CCTV (Closed circuit television) image storage device is installed and operated in an appropriate place for security, crime prevention, patrol, trash removal, and parking violation.

On the other hand, interest in streaming technology for transmitting multimedia contents in real time is increasing. The streaming server can transmit the content files stored in the storage system to a plurality of users in real time, thereby minimizing the size of storage space required for users.

Since the storage system of the streaming server performs a reading operation more frequently than the writing operation, it is necessary not only to increase the speed of the reading operation but also to store a large amount of multimedia contents, thus requiring a large storage space.

Therefore, it is important to develop a storage system capable of securing a large storage capacity while increasing the speed of the read operation.

However, in the related art, when video and audio data are transmitted through a network, there is not an organic time synchronization between protocols and systems of the network, so that transmission delay occurs due to network traffic, and thus, transmission to the storage medium of the streaming server There is a problem in that the storage speed is slowed even when storing the video and audio data.

Korean Patent Publication No. 10-2003-0052844

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for video and audio data captured by a plurality of cameras via an AVB (Audio Video Bridge) And a network storage server for receiving the video and audio data and directly storing the received video and audio data in a block unit on a block basis to provide a block unit direct storage device for video and audio data transmitted on AVB basis have.

According to an aspect of the present invention, there is provided an apparatus and method for directly storing video data and audio data transmitted on an AVB basis, (110) for transmitting the image data to the display unit (120); A video server 120 for receiving the video and audio data and transmitting the received video and audio data to the network storage server 130 based on AVB; An AVB transmission processing module 130a for receiving video and audio data transmitted in real time on the basis of AVB from the video server 120 and for processing the received video and audio data and an AVB transmission processing module 130a And an AVB storage module 130b for storing video and audio data transmitted in real time on an AVB basis in block units directly on a storage medium.

The present invention has the technical effect of minimizing the network traffic and reducing the transmission delay, and thus speeding up the storage speed of the network storage server.

FIG. 1 is a block-based direct storage apparatus for video and audio data transmitted on an AVB basis according to the present invention.
FIG. 2A shows the configuration of the video server in FIG. 1 in detail.
FIG. 2B shows a detailed configuration of the AVB transmission processing module of the network storage server in the configuration of FIG.
FIG. 2C illustrates the AVB storage module of the network storage server in FIG. 1 in detail.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block-based direct storage apparatus for video and audio data transmitted on an AVB basis according to the present invention.

Referring to FIG. 1, a block-based direct storage apparatus 100 for video and audio data transmitted based on AVB according to the present invention includes a photographing unit 110, a video server 120, a network storage server 130, And a control system (140).

The photographing unit 110 includes a plurality of first cameras 111 to N, and these cameras are installed in respective places, and image and sound data obtained by photographing the surrounding environment are converted into AVB (Audio Video Bridge to the video server 120. [

Here, the cameras 111 to 11N may be implemented using a dome camera, a PTZ (Pan Tilt Zoom) camera, a digital camera, an analog camera, or the like.

The AVB (Audio Video Bridge) provides a transmission quality guarantee type technology for smoothly transmitting a multimedia stream such as audio and video over a LAN through the IEEE 802.1 protocol. The bridge meshes can be synchronized with each other by properly extending the basic operation so that the Ethernet frames of a certain size can be transmitted between the bridges at predetermined time intervals at precisely desired time intervals. Traffic can be used as an infrastructure for stable delivery.

The video server 120 receives the video and audio data transmitted from the first camera 111 to the N-th camera 11N based on the AVB, and transmits the received video and audio data to the network magnetic field server 130, which will be described in detail below with reference to FIG. 2A.

2A shows a detailed configuration of a video server according to the present invention.

Referring to FIG. 2A, a video server 120 according to the present invention includes a main control unit (MCU) 121, a storage unit 122, and a data transmission / reception unit 123.

The main control unit (MCU) 121 includes a stream management block 121a, an Ethernet MAC 121b, an IEEE 802.1 AS 121c, an IEEE 1772 121d and an IEEE 802.1Qat 121e.

Here, the stream management block 121a receives video and audio data transmitted in real time based on the AVB from the first camera 111 to the Nth camera 11N, thereby realizing a streaming technique.

The Ethernet MAC 121b identifies the Ethernet MAC address in order to prevent video and audio data transmitted in real time based on the AVB from the first camera 111 to the Nth camera 11N from colliding with each other.

The IEEE 802.1 AS 121c is an AVB (Audio Video Bridge) protocol, which enables the timing and synchronization of bridges to be implemented in the AVB system.

IEEE 1772 (121d) facilitates transmission of streaming time-sensitive audio or video signals over an Ethernet AVB network and facilitates interoperability between end stations.

IEEE 802.1Qat 121e is an AVB (Audio Video Bridge) protocol that provides a signaling protocol to reserve audio / video streams between bridges after synchronization of bridges.

The storage unit 122 is a memory for storing video and audio data transmitted from the first camera 111 to the Nth camera 11N in real time based on AVB, It can be implemented using DDR3 SDRAM, which is up to four times faster (1.066 Gbps) and consumes less power.

The data transmitting and receiving unit 123 is a communication module that transmits video and audio data transmitted in real time based on AVB from each of the first camera 111 to the Nth camera 11N to the network storage server 130 on the basis of AVB , Preferably a dual gigabit network, so that the network transmission can be realized within a time delay of 0.2 ms.

As shown in FIG. 1, the network storage server 130 includes an AVB transmission processing module 130a and an AVB storage module 130b.

The AVB transmission processing module 130a is a transmission processing module for receiving video and audio data transmitted from the video server 120 on the basis of AVB and processing it, and a detailed description thereof will be described with reference to FIG.

FIG. 2B is a detailed block diagram of the AVB transmission processing module of the network storage server according to the present invention.

Referring to FIG. 2B, the AVB transmission processing module 130a according to the present invention includes a main control unit (MCU) 131, a storage unit 132, and a data transmission / reception unit 133.

The main control unit (MCU) 131 is connected to the stream management block 131a, the Ethernet MAC 131b, the IEEE 802.1AS 131c, the IEEE 1772 (131d ), An IEEE 802.1Qat 131e, and an NDAS Protocol 131f.

The functions of the stream management block 131a, the Ethernet MAC 131b, the IEEE 802.1AS 131c, the IEEE 1772 131d and the IEEE 802.1Qat 131e have already been described with reference to FIG.

The NDAS Protocol 131f is a protocol developed by Andas Co., Ltd., which is a protocol defining a method of storing data in network storage for video and audio data. In the AVB transmission processing module 130a, To the N-th disk (2N) of the AVB storage module 130b.

The storage unit 132 is a memory for storing video and audio data transmitted in real time on the basis of AVB through the data transmitting and receiving unit 123 of the video server 120. The memory unit 132 preferably has an operation speed up to 4 times Gbps) and lower power consumption with DDR3 SDRAM.

The data transmitting and receiving unit 133 is a communication module for transmitting video and audio data transmitted in real time on the basis of AVB to the AVB storing module 130b on the basis of AVB again through the data transmitting and receiving unit 123 of the video server 120 Can use a dual gigabit network to implement a network transmission with a time delay of less than 0.2ms.

Next, the AVB storage module 130b is a storage module for directly storing video and audio data transmitted on AVB basis in block basis on a storage medium in real time through the AVB transmission processing module 130a, A detailed description will be given in FIG.

FIG. 2C shows a detailed configuration of the AVB storage module of the network storage server according to the present invention.

Referring to FIG. 2C, the AVB storage module 130b according to the present invention includes an NDAS board 10 and a disk group 20.

Here, the NDAS board 10 is a board having an application specific integrated circuit (ASIC) chip capable of processing video and audio data transmitted through the NDAS protocol at a high speed, And voice data to be stored on a storage medium.

The NDAS board 10 includes an NDAS protocol support unit 11, a disk I / O format support unit 12, a broadband network support unit 13, a disk control unit 14, and a MAC controller unit 15 .

The NDAS protocol support unit 11 is connected to the NDAS protocol 131f of the AVB transmission processing module 130a so as to be directly stored in the disk group 20 when a command for storage is generated in the AVB transmission processing module 130a, It supports the protocol that can be done.

The disk I / O format support unit 12 receives a command when a command for storing the first block type is received in the AVB transmission processing module 130a, which is a parent unit, and formats the corresponding disk in the disk group 20, .

In this case, the corresponding disk is selected by using the unique MAC address information of the board.

The broadband network support unit 13 provides a large bandwidth network with several gigabit units in the board, thereby speeding up the storage in the disk group 20.

The disk control unit 14 controls each of the first to Nth disks 2N to 2N of the disk group 20 and controls the video and audio data to be directly stored in each block on a block basis.

The MAC controller unit 15 may use the unique MAC address information of the board to selectively control the first disk 21 to the Nth disk 2N mounted on the board It does.

Next, the disk group 20 includes a plurality of first disks 21 to N, and each disk stores video and audio data in units of blocks corresponding to the command.

In this case, each disk may be implemented as a storage medium, such as a hard disk drive (HDD), an optical disk drive (ODD), or a solid state disk (SSD).

Meanwhile, in the block-based parallel direct storage method of the present invention, each disk can be selectively controlled using unique MAC address information of the board, and each of the disks can be controlled in parallel By sequentially storing the data on the disk, the storage speed can be increased.

In the case of the file unit storage method, unnecessary header information of a packet and a continuous input / output (I / O) signal are generated, a transmission amount and a frame are reduced while a file system transmits a packet, By storing in a sequential manner rather than in a sequential manner, the storage speed is slow compared to the slow.

Finally, the control system 140 shown in FIG. 1 receives real-time video and audio data transmitted in real-time based on the AVB through the AVB transmission processing module 130a and displays all the recorded and stored images in one second And the photographing posture and camera operation of each of the first camera 111 to the Nth camera 11N can be controlled remotely.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. 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 of the invention.

110:
111 to 11N: First to Nth cameras
120: video server
130: Network storage server
130a: AVB transmission processing module
130b: AVB storage module
140: Control system

Claims (8)

A photographing unit for transmitting image and voice data obtained by photographing by a plurality of cameras to a video server based on AVB (Audio Video Bridge);
A video server for receiving the video and audio data and transmitting the received video and audio data back to the network storage server based on AVB; And
An AVB transmission processing module for receiving video and audio data transmitted in real time based on AVB from the video server and processing the received video and audio data,
And a network storage server having an AVB storage module for storing video and audio data transmitted in real time based on AVB through the AVB transmission processing module directly on a storage medium in units of blocks,
The AVB transmission processing module includes:
A main control unit (MCU) having a protocol for contracting the AVB (Audio Video Bridge) communication and implementing a streaming technique for the video and audio data;
A storage unit for storing the video and audio data transmitted in real time based on AVB; And
And a data transmission / reception unit for transmitting the video and audio data transmitted in real time based on the AVB to the AVB storage module based on the AVB.
delete The apparatus of claim 1, wherein the main control unit (MCU)
A stream management block that implements a streaming technique for the video and audio data transmitted in real time based on AVB;
An Ethernet MAC for identifying an Ethernet MAC address to prevent the video and audio data transmitted in real time based on the AVB from being collided with each other;
IEEE 802.1AS that provides a communication protocol that allows timing and synchronization of bridges to be implemented in a network storage server;
IEEE 802.1Qat providing a signaling protocol to reserve audio / video streams between bridges after synchronization of bridges; And
And an NDAS Protocol for providing a protocol defining a method of storing the video and audio data in a network storage. The AVB storage module according to claim 1,
An NDAS board for directly storing video and audio data transmitted in real time on an AVB basis through the AVB transmission processing module in a block group on a block basis; And
And a disk group for storing information corresponding to each of the plurality of disks in accordance with a control command of the NDAS board. The apparatus of claim 4, wherein the NDAS board comprises:
An NDAS protocol support unit for supporting a communication protocol to be stored directly in the disk group in response to the instruction when a command for storage is generated in the AVB transmission processing module;
A disk I / O format support unit for supporting a format of a corresponding disk among the disk groups in response to the instruction when a command for storing is generated in the AVB transmission processing module;
A broadband network support unit for supporting a network having a predetermined bandwidth so as to speed up the speeds stored in the disk group;
A disk controller for controlling each disk of the disk group to directly store video and audio data on a block basis for each disk; And
And a MAC controller unit for selectively controlling the disks mounted on the board by using unique MAC address information of the board itself. Storage device. 6. The information recording medium according to claim 5,
Wherein the video and audio data to be transmitted on an AVB basis is one of a hard disk drive (HDD), an optical disk drive (ODD), and a solid-state disk (SSD) Block - based direct storage for. The camera according to claim 1,
A direct camera, a dome camera, a PTZ (Pan Tilt Zoom) camera, a digital camera, and an analog camera. The method according to claim 1,
And a control system for remotely controlling the plurality of cameras by receiving video and audio data transmitted in real time based on AVB through the AVB transmission processing module, displaying the received video and audio data in real time, searching stored video and audio data, and controlling the plurality of cameras remotely Block-based direct storage for video and audio data transmitted on AVB basis.

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