KR100724353B1 - Method for embodiment home network system of simply structure - Google Patents

Abstract

The present invention relates to a method of implementing a home network system having a simple structure. In particular, the present invention relates to a method of implementing a home network system in which a home network device command system is simply implemented by connecting and controlling PCs and various home appliances in a home. It is about. Therefore, the present invention allocates the Internet protocol address by the server, and determines whether the Internet protocol address of the packet received from the network matches its own Internet protocol address, and if it does not match, A second step of stopping the packet transmission, and if it matches, checks the device code and the seed of the packet to determine whether it is its own device, and if it is its own device, sends the command packet to the application program. The third step is to wait for a response and send a packet to an internet protocol device if the device is not its own device. Shorten paths and misunderstand data There is an effect that can reduce the likelihood.

Description

METHOD FOR EMBODIMENT HOME NETWORK SYSTEM OF SIMPLY STRUCTURE}

1 is an exemplary view showing a conventional home network structure.

2 is an exemplary view showing the structure of a conventional home network protocol layer.

Figure 3 is an exemplary view showing the structure of the home network protocol layer of the present invention.

4 is an exemplary diagram for explaining the 3-byte home network packet structure of the present invention.

Figure 5 is a flow chart illustrating a method of implementing the home network system of the present invention.

6 is an exemplary diagram for explaining the contents of the present invention home network command.

*** Description of the symbols for the main parts of the drawings ***

31: application 32: automatic address setting method

33: Internet Protocol 34: Home Network Internet Protocol

35: network interface unit 41: device code

42: home network command 43: extension code

44: seed-32

The present invention relates to a method of implementing a home network system having a simple structure. In particular, the present invention relates to a method of implementing a home network system in which a home network device command system is simply implemented by connecting and controlling PCs and various home appliances in a home. It is about.

Nowadays, as the infrastructure for the network is gradually established in each home, there is a tendency to feel the necessity of connecting various devices in the home to the network and to control or manage the various devices in the home by the network.

FIG. 2 is an exemplary view showing a structure of a conventional home network protocol layer. As shown in FIG. 2, the transport layer of the OSI (OSI: Open Systems Interconnection hereinafter, referred to as OSI) 7 layer is used as it is. Since the protocol defined by each standard is used in the state above the session layer, the data overhead due to dummy data and various encapsulation occurs, and it is complicated to implement.

Packets transmitted from the network pass through the Internet protocol 30, the user datagram protocol 29 and the transmission control protocol 28, OSI 7 layer, and the manufacturer-provided UPNP (Microsoft standard) 24 thereon, It is interpreted by protocol drivers, such as HAVI (Sony side standard) 25 and HWW (Samsung standard) 26, and the application program 21 controls a device.

 In other words, by using existing network protocols as it is, internet protocol addresses are assigned on the home network through many OS layers and simple control. As such structure is used, complex protocols are required for simple control. It became complicated.

In other words, UPNP (24), HAVI (25) and HWW (26) used when connecting a plurality of information terminals and home appliances in a home with a high speed home network, etc. are considered. From the seventh layer to the transport layer, the vendors additionally create a protocol for standardization, namely, the frame 23 and the device control protocol 22, and the application program 21 thereon. use.

As described above, in the conventional technology, the home network system has a structure using an application program based on the OSI 7 layer, which makes the communication software complicated and difficult to implement a simple control command. There was this.

Accordingly, the present invention was created to solve the above-mentioned conventional problems, and to easily implement a home network device command system by defining a home network Internet protocol (IP), and to facilitate the implementation. The purpose of the present invention is to provide a simple method of implementing a home network system by defining a three-byte home network packet structure to implement a simple home network.

In order to achieve the above object, the present invention provides a first step of allocating an Internet protocol address by a server and determining whether an Internet protocol address of a packet received from a network matches its own Internet protocol address, and the first step. As a result of the determination, if it does not match, the packet transmission is stopped. If there is a match, the second step of determining whether the device is the device by checking the device code and the seed of the packet; The third step is to send a packet to the application program and wait for a response, and transmit the packet to the Internet protocol device if it is not its own device.

Hereinafter, with reference to the accompanying drawings, the operation and effects of a simple structure home network system implementation method according to the present invention will be described in detail.

First, one byte of the end of the Internet protocol address of the first step becomes a device code, a home network command is sent with 0x02, and an extension code becomes zero, and the device code of the home network packet data of the second step It checks the seed and checks whether it is own and if it is correct, it interprets the command part and sends it to the application program.                     

The third application program turns on the device according to the received command and generates a command success or failure packet on the control server side and transmits the command success or failure packet to the home network Internet protocol.

On the other hand, the control server recognizes that the command has been executed normally when 0 × fe appears in the command part of the packet transmitted from the network, and retries or gives up when the command fails when 0 × ff appears in the command part of the packet. Do it.

When the TV is connected to the home network, the control server side allocates the Internet protocol address 33 to the TV by the Automatic Host Configuration Protocol (DHCP) server.

Then, the control server sends a command packet to turn on the TV. At this time, the first byte of the Internet protocol address becomes the device code 41, and the home network command 42 0x02 sends it. Lose. At this time, since there is no extension code 43, the value is 0.

When the device receives this home network packet through the network, the device receives it at the Internet protocol layer, and checks the device ID portion of the packet data and the CRC cyclic redundancy checking. Confirm that

If it is correct, it interprets the command part and passes it to the Application Program Interface (API) part. This application interface sees this command, turns on the device, and then sends a packet to the control server. Create and pass it to the home network Internet protocol. This packet should be loaded with 0xfe in the command section.

The control server requesting a command from the TV side sees this packet from the network and knows that the command has been executed normally.

If 0xff appears in the command section, it will recognize that it has failed and try to execute it again, or it will give up.

For reference, as shown in FIG. 2, when the transport layer of the OSI 7 layer is used as it is, the protocol defined by each standard is used in the session layer or more. In this case, dummy data and various encapsulation ( Data overhead due to encapsulation occurs and is complicated to implement.

Packets sent over the network are interpreted by the Internet Protocol, User Datagram Protocol (UDP) / Transmission Control Protocol (TCP) OS7 layer to control the device in the application.

However, the present invention can shorten the path and reduce the possibility of misinterpretation of the data by interpreting the contents of the request directly to the device with the Internet protocol data packet and immediately delivering the contents to the application program.

As shown in FIG. 4, the structure of the data packet is limited to 7 bytes, and the device code 41, the home network command 42, and the extension 43 are each. It consists of 1 byte and 4 bytes 44 of CR-32 (CRC-32).                     

First, home devices for home networks will not exceed 256, so one byte (2 ^ 8 = 256) is enough to represent the device code 41. This device ID is an address autoconfiguration server. The last 1 byte of an internet protocol address assigned by.

In general, the commands given to the device will not be able to exceed 256 commands even if they are added to the functions of the existing remote controllers such as power on / off, volume up / down, video control, playback, and stop.

However, in the future, 256 instructions could be extended with an extension byte in case more complex devices emerge.

The last two bytes are used to inform the user who wants to control the result of the control service. The user defined part is used by the user as a necessary function.

An example of using an extension code may be used as a part to write an error code for a fault when a fault mark is included in a command part, or to send device information to a control server when resetting a fault.

The present invention aims to facilitate the implementation of a controlled device (passive device) rather than the controlling device, and the present invention focuses on software. However, the present invention is designed to be implemented at low cost with a semiconductor.

That is, as shown in FIG. 3, the Internet protocol 33, the home network Internet protocol 34, the address autoconfiguration method 32, and the service application code may be implemented by a semiconductor chip.

Since the present invention does not mention media to be connected to a home network, a company making a media device, such as a home PNA (PNA: Phoneline Networking Alliance, PNA), a power line controller, a cable modem, a 1394 NIU, etc. If you implement this feature together, you will be comfortable using it.

According to the present invention, when the home appliances are connected to the home network, it is possible to control them externally, because when the control server is connected to the external Internet and the server program is executed, the home network packet is received. It can be used to send commands to devices in the home network, and the device can perform external commands on the home network Internet protocol.

As described above, the present invention simplifies the device command system by defining a simple home network data frame packet when connecting a plurality of information terminals and home appliances in a home to a high speed home network.

In addition, it is easier to implement on the home network device than the conventional method by limiting the portion of processing the home network data packet to the data link layer, that is, the Internet protocol layer and the application program, among the seven layers.

In addition, by creating a new protocol called the home network Internet protocol to process home network data packets, it is possible to improve performance and ease of application and to implement a semiconductor chip.

In addition, the use of a simple home network protocol on the Internet protocol layer facilitates device manufacturers' implementation, lowers the cost of implementation, and reduces the load on the network, and the ability to extend the commands requested for the device. This has the effect of favorable service expansion in the future.

In addition, by directly interpreting the contents of the request made to the device with the Internet protocol data packet and immediately delivering the contents to the application program, it is possible to shorten the path and reduce the possibility of data misinterpretation.

Claims (4)

The first step of allocating the Internet protocol address by the server and determining whether the Internet protocol address of the packet received from the network matches its own Internet protocol address, and if it does not match, stops packet transmission. If it matches, the second step of checking the device code and the seed of the packet to determine whether it is its own device, and if it is the device of its own, the command packet is sent to the application program to wait for a response. If the device is not its own device comprises a third step of transmitting a packet to the Internet protocol device, the home network system implementation method of a simple structure. 2. The home network system according to claim 1, wherein the first byte of the Internet protocol address of the first step becomes a device code, a home network command is sent as 0x02, and the extension code is zero. How to implement. The method of claim 1, wherein the third step comprises: a first step of parsing the command byte when the command packet is transmitted to the application program; a second step of parsing the extension byte; and a home network packet if there is a response from the application program. The method of claim 1, further comprising: initializing an interface loop of the application if there is no response. 2. The home network of claim 1, wherein in the third step, if the command packet is 0xfe, it is recognized as execution of a normal command, and if the command packet is 0xff, it is recognized as a failure of the command. How to implement the system.

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