KR20010111204A - Link information acquisition method for home network - Google Patents

Abstract

The present invention relates to a method for acquiring link information of a home network, and more particularly, to obtain a link information necessary for web browsing using a GUID and a SEID on a home network, and to access a device on a home network on the Internet by databaseting the link information. The aim is to enable more effective access to the desired equipment and control the desired functions. According to the present invention, a home network in which a plurality of digital devices are connected includes a step in which a device having a web server SE registers a SEID and communication protocol attribute in its registry, and a device having a web server proxy FCM. Instructing devices on the network to query their SEID for their SEID; querying the registry of the device with the web server proxy FCM for the SEID in the registry provided on the device on the network; The registry included in the web server proxy FCM, responding to the registry of the device with the web server proxy FCM, and the registry of the device with the web server proxy FCM from the device on the network. The web server proxy FCM database the response results, Analyzing the target GUID from the external request signal to determine the final target SEID from the database, characterized in that the step of transmitting a message request or response to the SEID.

Description

LINK INFORMATION ACQUISITION METHOD FOR HOME NETWORK}

The present invention relates to a home network, and more particularly, to a method of obtaining link information on a HAVi network.

With the development of digital technology, digital home appliances (DTV, STB, DVD, DVHS, DVC, etc.) have appeared on the market, and the method of connecting digital products is naturally enacted as a standard.

Among them, HAVi (Home Audio Video interoperability) is one of the standards for configuring a home network by connecting home appliances complying with the 1394 interface standard.

HAVi is a middleware that allows home appliances and PCs in a home to interoperate with each other based on IEEE 1394 and IEC61883 standards.

1 is a diagram illustrating a connection between a HAVi home network and an external web server. As shown in FIG. 1, a web client 110 and a gateway system 120 are connected to a HAVi home network based on an IEEE 1394 interface standard. The gateway system 120 and the web server 130 are connected to the Internet.

The web client 110 is a home appliance having an arbitrary function. The web client 110 includes an Internet application protocol such as HTTP 111 as well as messaging for communication with the gateway system 120. System 112.

The gateway system 120 is connected between the web client 110 and the web server 130 to serve as a web gateway for providing an internet protocol. The hardware and internet protocol stack capable of internet access in a HAVi home network is provided. Provided by any household appliance having a.

That is, the gateway system 120 is a home appliance having any function in which the web proxy FCM 121 exists. The gateway system 120 communicates with the web client 110 using the messaging system 122 and is based on TCP / IP. Communication with the web server 130 using the Internet communication device 123 of the communication system and the communication system 123 between the messaging system 122 and the Internet communication device 123 using the Web Proxy FCM 121. Will be connected.

Accordingly, the web server 130 includes an HTTP 131 and a TCP / IP-based internet communication device 132 so that the search information from the web client 110 is accessed when the gateway system 120 is connected through the Internet. Will be provided.

The web proxy FCM 121 provides WebProxy :: Open (), WebProxy :: Close (), WebProxy :: Send (), <Client> :: Receive (), WebProxy to enable internet access to the web client 110. It provides an API called :: GetCapability ().

Meanwhile, a communication process between the web client 110 and the web proxy FCM 121 provided in the gateway system 120 will be described below.

First, the web client 110 uses the WebProxy :: Open () API of the web proxy FCM 121, which determines in which home appliance the web proxy FCM 121 is located through the registry, for example, In addition to opening http), you will be informed of the size of the message that can be received at a time.

In this case, the web proxy FCM 121 is used as an HTTP agent and allocates a cid (connection id) to the web client 110 and notifies a message size to be transmitted at a time.

Thereafter, when the connection is established, the web client 110 sends an http request signal to the web proxy FCM 121 through the WebProxy :: Send () API.

In this case, when the web proxy FCM 121 receives the request signal from the web client 110, the web proxy FCM 121 connects to the web server 130 through TCP and transmits the request signal to the web server 130.

Thereafter, when a response signal is transmitted from the web server 130, the web proxy FCM 121 transmits the content to the web client 110 through the <Client> :: Receive () API.

Thereafter, when the web client 110 wants to disconnect, the web client 110 is achieved by calling the WebProxy :: Close () API to the web proxy FCM 121.

That is, in the conventional HAVi home network, the web client 110 provides a method for accessing the Internet through the web proxy FCM 221.

However, at present, HAVi does not define a protocol for controlling home appliances connected to HAVi home network in home using the Internet from an external remote place, that is, a concept and API for starting communication by a device of an external remote place as a subject. .

Therefore, there is a drawback that at present, it is not possible to control home appliances connected to the HAVi home network in the home using the Internet from an external remote location.

However, if you want to remotely control the office outside the home on the HAVi home network applying the IEEE 1394 interface, which has recently emerged as an interface method between digital devices, only one device on the HAVi network can function as a web proxy in the HAVi network system. Even if present, other devices on the same network are using the web proxy to interconnect with the outside Internet.

That is, the HAVi protocol that can be connected to the external Internet on the HAVi network has been proposed.

Accordingly, a first object of the present invention is to provide a method for obtaining link information of a home network, which is designed to obtain link information required for web browsing using a GUID and a SEID provided by the HAVi protocol.

In addition, a second object of the present invention is to make a user easily access a desired device even after a power-on reset or a network topology by making a database of link information necessary for web browsing.

In other words, the present invention obtains the link information necessary for web browsing using GUID and SEID on the home network and makes the database the link information to identify the desired device more effectively when the user accesses the device on the home network on the Internet. Is to control.

1 is a block diagram of a conventional home network.

2 is a block diagram of a home network for an embodiment of the present invention;

Figure 3 is an exemplary view showing a database of link information in the present invention.

4 is an operation flowchart for obtaining link information in an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

210,240,250: Web server 211,241,251: Web server SE

212,222,242,252: Messaging system 213,224,243,253: Registry

220: gateway system 223,232: Internet communication device

230: web client

In order to achieve the above object, the present invention provides a method for a home network in which a plurality of digital devices are connected, in which a device having a web server SE registers a SEID and communication protocol attribute in its registry, and a web server proxy FCM. Instructing a device having its own registry to query devices on the network for its SEID; and querying the registry of the device with the web server proxy FCM for the SEID to a registry provided on the device on the network; Registries of the devices in the network on the network responding to the registry of the devices with the web server proxy FCM, and registries of the devices with the web server proxy FCM from the devices on the network. Responding with the web server proxy FCM, and the web server proxy FCM And a request signal received from the outside, and analyzing a target GUID from the signal to determine a final target SEID from the database, and transmitting a message request or response to the SEID.

In the above, the database is composed of a GUID, a SEID, and an address to be visited next.

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

Home network according to an embodiment of the present invention, as shown in the configuration of Figure 2, between the digital device 210, 220, 240, 250 connected to the HAVi home network based on the IEEE 1394 interface standard The digital device 220 and the web client 230 are configured to connect to the Internet.

The digital devices 210, 220, 240, 250 are configured with a web function application so that each can operate as a web server.

In particular, the digital device 220 has a web server proxy FCM 221 is configured to act as a gateway.

Hereinafter, the digital devices 210 (240 and 250) are referred to as web servers, and the digital devices 220 are referred to as gateway systems.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

HAVi home network connecting digital devices based on IEEE 1394 interface reconfigures the existing network topology when power-on or bus reset occurs. In this case, HAVi SE can be identified by using SEID (Software Element ID, 10 bytes). do.

However, once set, the SEID is not maintained regardless of the change on the bus. The SEID is constantly changed as the configuration changes.

That is, the SEID has an attribute indicating each device, but if the ID of the device changes due to a change in the bus configuration, the user may be confused when trying to identify devices in the home on the Internet.

This confusion can be avoided by using a Global Unique ID (GUID).

The GUID is a unique ID for identifying digital devices based on the IEEE 1394 interface. The GUID includes a total of 8 bytes including a 3 byte vendor ID provided by the 1394 Registraion Authority Committee and a 5 byte serial number assigned by the device manufacturer. .

The GUID of this configuration is stored in the configuration ROM of each device, and always has a constant value regardless of bus topology change.

Therefore, the operation of the embodiment of the present invention based on the above concept will be described with reference to the operation flowchart of FIG. 4 with reference to a web server and a web server proxy FCM. same.

First, the HAVi protocol-based web server 210, 240, 250 is a home appliance having an arbitrary function, each of which has its own web function application. When powered on, each device is a web server FCM (Functional Component). Modules 211, 241 and 251 register their SEID and HTTP attributes in their respective Registrys 213, 243 and 253.

Here, the web servers 210 (240) 250 and the gateway system 220 may be configured with digital devices such as STB, DVD, DTV, ....

At this time, the gateway system 220 queries the web server proxy FCM 221 of its registry 224 with the device 210, 240, and 250 on the network. To do so.

Accordingly, the registry 224 provided in the gateway system 220 queries the registries 213, 243, and 253 provided in the respective digital devices 210, 240, and 250 again. .

Accordingly, the registry 213 (243) 253 provided in each of the digital devices 210, 240, 250, the gateway system 220 to the GUID, SEID, etc. of the SE corresponding to the HTTP attribute among the local SEs. Respond to the registry 224 provided in.

At this time, the registry 224 aggregates the results from each of the devices 210, 240, 250 and responds to the web server proxy FCM 221.

Accordingly, the web server proxy FCM 221 builds the results in the registry 224 into a database.

The database constructed by the web server proxy FCM 221 is shown in the example of FIG. 3, where RP is an initial root point and points to go to an address of Next data.

Thereafter, when a request signal is received from the external Internet, the web server proxy FCM 221 analyzes a destination GUID included in the request signal and analyzes a database already established to find a final target SEID.

Accordingly, the web server proxy FCM 221 transmits a message request or response to the final SEID.

Therefore, by communicating with each other with the final SEID based on the database GUID, the user can easily access the device on the external Internet, identify the device, and select a desired device to control arbitrary functions.

If the bus topology changes, the web server proxy FCM 221 updates the database.

As described in detail above, the present invention obtains information of devices on a home network using a HAVi SEID based on a GUID provided by an IEEE 1394 interface, database the device information, and updates a database when a bus topology changes. If the user wants to control any device on the home network from the outside, the device can be easily identified to control the function of the device.

Claims (7)

In a home network connecting a plurality of digital devices, a device having a web server software element (SE) registers a software element (SEID) and communication protocol attribute in its registry, and has a web server proxy FCM. A method for acquiring link information of a home network, comprising: a device recognizing a SEID from devices on a network, and a database of SEIDs of the devices on the network. The method of claim 1, wherein the communication protocol attribute is for determining whether the web protocol has a web function. Detecting a GUID of a device to be connected from the signal when a connection signal is received from the outside by the device having the web server proxy FCM, and using the detected GUID by the device having the web server proxy FCM Detecting a software element ID (SEID) of the target device by searching a database; and transmitting a message or response requested from a remote location to the device having the detected SEID. Acquisition method. 2. The method of claim 1, wherein the step of recognizing SEIDs of the devices on the network comprises: instructing the web server proxy FCM to its registry to query the devices on the network for their SEID; The process of querying the SEID to the registry provided in the device on the network, and the registry provided in the device on the network, responds to the registry of the device equipped with the web server proxy FCM. A method of obtaining link information of a home network. The method of claim 1, wherein the database of the link information comprises: collecting a result of the registry of the device having the web server proxy FCM from the device on the network and responding to the web server proxy FCM; Link information acquisition method of a home network, characterized in that the process of the database of the response results. 6. The method of claim 1, 3, or 5, wherein the database is composed of a GUID, a SEID, and an address to be visited next. 6. A method according to claim 1 or 3 or 5, wherein the database of link information is updated whenever the bus topology changes.