CN103956177B - The extendible VOD system of plate level based on Internet of Things - Google Patents

Abstract

The board-level expandable on-demand system based on the Internet of Things belongs to the field of Internet of Things players. It is composed of board-level scalable on-demand system server, NFC access unit module, and client equipment. The board-level scalable on-demand system server is obtained by bridging multiple board-level modules. Each board-level is connected with a network interface and SD card. Data interface, golden finger internal interface; the NFC access unit module has a built-in computing core, and the NFC access unit module is paired with the client device within a unit distance, and has a built-in computing core that supports NFC; the client device is addressed through ipv6 Wireless access board-level scalable on-demand system server. The orderer of the present invention innovates from the structure of the orderer and the access mode of the orderer, and produces a board-level expandable orderer based on the Internet of Things. The on-demand device uses the near-field interaction method NFC in the Internet of Things to pair, and through the preset software, the media information on the server is on-demand.

Description

Board-level expandable video-on-demand system based on the Internet of Things

technical field

The invention belongs to the field of Internet of Things players, in particular to a board-level expandable playback system.

Background technique

At present, Internet broadband technology and multimedia technology are developing rapidly. According to statistics, nearly 80% of the traffic transmitted on the network is multimedia content, and multimedia applications have become an important content of Internet applications. Streaming Media (Streaming Media) refers to the multimedia application that video, sound and data are sequentially transmitted from the source to the destination in a continuous stream through the real-time transmission protocol. Play while downloading".

The Internet of Things is an important part of the new generation of information technology. It is based on the Internet and is a network that is extended and expanded on the basis of the Internet. Its client extends to the exchange of information between any items. In other words, the Internet of Things is the "Internet of Things Connected". Its purpose is to realize the connection between things and things, things and people, and all things and networks, so as to facilitate identification, management and control.

Traditional video-on-demand devices mostly adopt an independent structure, cannot be expanded, and have a fixed access method, and can only perform video-on-demand operations through preset monitors and other devices. These characteristics make the post-maintenance of the on-demand device difficult, the utilization rate is low, and it is difficult to meet the needs of users. In addition, traditional VODs mostly use ipv4 as the transmission method, and access users are limited.

To sum up, the traditional streaming media on-demand system has the following disadvantages:

1. Self-service pairing cannot be completed, and on-demand content can only be watched through the monitor provided by the system.

2. Use ipv4 addresses for addressing, so that once the amount of interaction is large, address resources will be scarce.

3. Use wired access to interact with the server, which is not convenient.

Contents of the invention

The technical problem to be solved by the present invention is to provide an on-demand system based on the Internet of Things, adopting ipv6 wireless access technology, and board-level expandable. The client uses the NFC interaction method to pair with the access gateway. The successfully paired client will receive the file list sent by the server, and send streaming media data to the client's device through the ipv6 wireless network.

The board-level expandable on-demand system based on the Internet of Things is characterized in that: it is composed of a board-level expandable on-demand system server, three or more NFC access unit modules, and client devices. The extended on-demand system server is obtained by bridging three or more board-level modules, and each board-level is connected with a network interface, an SD card data interface, and a golden finger internal interface; the built-in NFC access unit module There is a computing core, and the NFC access unit module is paired with a client device within a unit distance, and the paired client device has a built-in computing core that supports NFC; the client device uses ipv6 addressing to wirelessly access the board level Scalable on-demand system server.

The board level has a built-in computing core, and the on-chip network is used for communication within the board level, and the golden finger is used for communication between board levels.

Said board level is divided into two categories, namely edge nodes and intermediate nodes.

The edge node transmits streaming media information outwards and inwards directory information through its network interface and SD card data interface; the edge node communicates with the intermediate node by supporting the internal communication protocol, and the edge node supports the external communication protocol and supports protocol translation Communicate with client devices.

The intermediate node communicates with the edge node through an internal communication protocol, and the intermediate node transmits the received directory information to the client device through the edge node.

The protocol translation described includes two processes

1. Detecting a data packet to be transmitted through the wireless network, and intercepting the data portion of the data packet;

2. Add header information to the data packet according to IP protocol rules, and forward it.

The packet header information includes seven parts in total, flag bit, packet size, operation type, source address, others, destination address, and operation address.

The adding header information is to extract the source address, destination address, and packet size from the seven parts of the header information. After filling in the header information according to the ipv6 data, it is passed to the client device as an ipv6 data packet through the wireless network.

The data packet is composed of header information and a packet body, wherein the packet body is the data part of the network-on-chip data packet.

Through the above design scheme, the present invention can bring the following beneficial effects: At present, the Internet streaming media on-demand system mainly consists of a digital media server, a WEB server, a management system, a billing system, an authentication server, a program production system and a program library. There are following deficiencies:

The degree of integration is not high, and the board-level scalable structure is adopted in this paper to solve this problem.

The number of supported users is limited. In this paper, ipv6 and NFC access technology are used to ensure the support of a large number of users.

The degree of parallelism is not high. In this paper, the network on chip is used to replace the bus structure, which ensures the improvement of the degree of parallelism.

The invention consists of a board-level expandable on-demand system server, several NFC access unit modules, and client devices. For the on-demand server, it is obtained by bridging multiple board-level modules, and each is connected with a network interface, SD card interface, and golden finger internal interface. The advantage of such a structure is that it has good scalability, and new board structures can be expanded at will. The multiple board structures will act as a whole, shielding the internal details from the outside. The client does not need to know the storage location of each file, but only needs to request the data from the entire system.

The orderer of the present invention innovates from the structure of the orderer and the access mode of the orderer, and produces a board-level expandable orderer based on the Internet of Things. The on-demand device uses the near-field interaction method NFC in the Internet of Things to pair, and through the preset software, the media information on the server is on-demand.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Figure 1 is a board-level scalable structure diagram.

Figure 2 is a schematic diagram of the interaction.

Figure 3 is a flow chart of cloud on-demand broadcasting.

Fig. 4 is a perspective view of the appearance of the player.

Fig. 5 is a front view of the appearance of the video-demander cabinet.

Fig. 6 is the rear view of the external appearance of the planter cabinet.

In the figure, 1-chute, 2-stand-alone interface.

Implementation

Scalable structure design:

This paper adopts a board-level scalable structure, each board has a computing core, the board uses the on-chip network for communication, and the boards use golden fingers for inter-board communication. Structurally, boards can be divided into two categories:

1. Edge nodes

2. Intermediate nodes

The on-demand process is: the user carries a client device that supports NFC, and puts it close to the NFC access unit module to complete the pairing. After the pairing is successful, the client device will wirelessly access the server with ipv6, and the server will send a list of on-demand files for the user on demand. After that, the server will continuously send the streaming files to the client device.

The edge node is responsible for maintaining a content addressing table, which contains two fields: the content index and the address of the core where it is located.

When the system receives external on-demand information, it first queries the addressing table, and then requests information from the corresponding resource core. Each fixed period between different edge nodes needs to exchange content addressing tables to reach the latest state. When a new resource core joins the system, it only needs to deliver its own program information to the nearest edge node.

Edge nodes have several characteristics: each has a network interface, SD card data interface, and is responsible for transmitting streaming media information to the outside and transmitting directory information to the inside. The communication with the intermediate node needs to support the internal communication protocol, and the communication with the client needs to support the external The communication protocol needs to support the translation of the protocol. Intermediate nodes have several characteristics: they are not responsible for external communication, but only need to support internal communication protocols. When receiving directory information, it first searches for program information within itself, and if not, passes it to adjacent nodes. If the program information is found in the SD card of its own node, it will be passed to the client machine through the edge node.

The protocol translation process is as follows:

The data transmission between the boards follows the on-chip network protocol, and the data transmission from the server to the client adopts the IP protocol. Therefore, protocol translation is involved when streaming data is delivered to the client. This translation process has two passes:

1. When it is detected that the data packet will be transmitted through the wireless network, the data part of the data packet is intercepted.

2. Add header information to this data packet according to IP protocol rules, and forward it out.

For how to intercept the data part (body) of the on-chip network data packet, the data packet header contains seven parts: flag bit, packet size, operation type, source address, others, destination address, and operation address. When a data packet arrives, waiting to be forwarded to the client, we will extract the source address, destination address, packet size and packet body according to the above seven parts and wait for re-encapsulation. After filling in the ipv6 data packet header information, it is passed to the client as an ipv6 data packet through the wireless network. In this way, the client only needs to buffer a little to watch the streaming media continuously.

As shown in Figure 4-6, the video player is placed in the video player cabinet, which is equipped with a chute 1 and a stand-alone interface 2. There is no shelter behind the power supply of the VOD cabinet. The present invention transmits data in a wireless manner, and users can use their own equipment to order data on the server without presetting a display.

Claims (9)

1. The board-level expandable video-on-demand system based on the Internet of Things is characterized in that: it is composed of a board-level scalable video-on-demand system server, three or more than three NFC access unit modules, and client devices. The level scalable on-demand system server is obtained by bridging three or more board-level modules, and each board level is connected with a network interface, an SD card data interface, and a golden finger internal interface; the NFC access unit The module has a built-in computing core, and the NFC access unit module is paired with a client device within a unit distance, and the paired client device has a built-in computing core supporting NFC; the client device is wirelessly accessed through ipv6 addressing Board-level scalable on-demand system server. 2. The board-level expandable video-on-demand system based on the Internet of Things according to claim 1 is characterized in that: said board-level has a built-in computing core, and a network-on-chip is used for communication in the board-level, and golden fingers are used between board-levels to communicate. 3. The board-level expandable video-on-demand system based on the Internet of Things according to claim 1, characterized in that: the board-level is divided into two categories, i.e. edge nodes and intermediate nodes. 4. the board-level expandable on-demand system based on the Internet of Things according to claim 3 is characterized in that: the edge node transmits streaming media information outwards and inwardly transmits directory information through its network interface and SD card data interface ; The edge node communicates with the intermediate node by supporting the internal communication protocol, and the edge node communicates with the client device by supporting the external communication protocol and supporting protocol translation. 5. the board-level expandable on-demand system based on the Internet of Things according to claim 3 is characterized in that: the intermediate node communicates with the edge node through the internal communication protocol, and the intermediate node will receive the directory information and transmit it to the edge node through the edge node client device. 6. The board-level scalable on-demand system based on the Internet of Things according to claim 4, characterized in that: said protocol translation includes two processes 1. Detecting a data packet to be transmitted through the wireless network, and intercepting the data portion of the data packet; 2. Add header information to the data packet according to IP protocol rules, and forward it. 7. The board-level expandable video-on-demand system based on the Internet of Things according to claim 6 is characterized in that: said packet header information comprises seven parts altogether, flag position, packet size, operation type, source address, others, destination address , Operation address. 8. according to claim 6 or 7 described board-level expandable ordering system based on Internet of Things, it is characterized in that: described adding header information is to extract source address, destination address, packet size from seven parts of header information, After filling in the header information according to the ipv6 data packet, it is passed to the client device as an ipv6 data packet through the wireless network. 9. The board-level scalable on-demand system based on the Internet of Things according to claim 6, wherein the data packet is composed of header information and a packet body, wherein the packet body is the data part of the network-on-chip data packet.