KR20040049719A - method for communicating of home network adaptor - Google Patents

Abstract

The present invention relates to a communication method of a home network adapter that enables communication by itself and does not require a separate address setting during mass production. And a data transmission step in which the first adapter takes the recipient address from the data transmitted from the product connected to the product and transmits the data transmitted from the product to the second adapter corresponding to the recipient address, and if there is a response from the second adapter, When the transmission is completed and there is no response, a response confirmation step of retransmitting the data transmitted from the product to the second adapter is included, thereby improving communication reliability and minimizing the load on the product.

Description

Method for communicating of home network adapter

The present invention relates to a network adapter, and more particularly, to a communication method of a network adapter.

The home network system refers to a system that controls a plurality of home appliances, such as PCs, mobile phones, refrigerators, washing machines, and microwave ovens, by interconnecting and controlling a plurality of home appliances.

In other words, it is a system that connects and controls all peripheral devices in a home through a main device through a home networking network, and is currently under development in accordance with the IEEE1394 and IEC61883 standards.

At this time, in order to control all the peripheral devices in the home as one main device, a protocol for integrating and controlling various signals on the communication bus must be provided, and the current progress is shown by showing the movement of each device to the user. Only by knowing the state can home networking be realized.

As shown in FIG. 1, a typical home network system includes a plurality of products 12-1 to 12 -N, a home network adapter connected between each of the plurality of products 12-1 to 12 -N and a power line (hereinafter, referred to as a home network adapter). Adapter 11-1 to 11-N, a network manager (NM) 10 having a program and a user interface for integrated management of the multiple products 12-1 to 12-N, and the network manager. And an adapter 11-0 connected between the 10 and the power line.

At this time, the adapter is widely used with a PLC (Power Line Communication) modem, and it only plays a simple role of transmitting data transmitted from a connected product to a communication line, that is, a power line. It is.

The communication operation of such a home network system will be described as follows.

First, a user may control or monitor each product through a user interface provided in the network manager 10, and set each product to notify a change in its operation state according to a predetermined operating condition.

Accordingly, the network manager 10 may transmit a user's command to the corresponding product, or transmit data from each product to the network manager 10 according to a set condition.

In addition, communication between each product is also possible. For example, when communicating from the product 1 (12-1) to the product 2 (12-2) of a plurality of products connected to the network, the product 1 (12-1) predetermined When the command is transmitted to the power line through the adapter 1 (11-1), the command is transmitted to the product 2 (12-2) through the adapter 2 (11-2).

In this case, when the product 1 (12-1) sends a command requiring a response to the product 2 (12-2), the product 1 (12-1) waits for a response from the product 2 (12-2) and communicates To control.

However, when the product 1 (12-1) transmits a simple transfer command notify that does not require a response, it does not perform communication control such as sending a command to the adapter 1 (11-1) but waiting for a response. .

And the adapter 1 (11-1) also only serves to convey the command of the product 1 (12-1).

The home network system according to the prior art has the following problems.

First, since the adapter merely plays a role of transmitting a command transmitted from the product on a communication line, and the product also does not check the success or failure of communication for a predetermined command, it may not be recognized even if a communication error occurs. The reliability of communication decreases.

Second, since the address of the adapter is set, address management and cost consumption occur.

Accordingly, an object of the present invention is to provide a communication method of a home network adapter, which does not require a separate address setting during mass production and enables its own communication.

1 is a block diagram showing the configuration of a typical home network system

2 is a flowchart illustrating a communication method of a home network adapter according to the present invention.

The present invention provides an address setting step in which a first adapter takes a sender address from data transmitted from a product connected to the device, and sets the sender address as its own address, and takes a recipient address from data transmitted from the product connected to the first adapter. A data transmission step of transmitting the transmitted data to the second adapter corresponding to the receiver address, and if there is a response from the second adapter, completes the data transmission; if there is no response, confirms the response of transmitting the data transmitted from the product to the second adapter. Characterized in that it comprises a step.

Hereinafter, a preferred embodiment of a communication method of a home network adapter according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a communication method of a home network adapter according to the present invention.

For convenience of explanation, communication between the adapter 1 and the adapter 2 will be described as an example.

First, when power is supplied to the adapter 1, an address, that is, an address request command is transmitted to the connected product through the serial interface (S21).

Therefore, the product connected to the adapter 1 transmits predetermined data for transmission to the product connected to the adapter 2 to the adapter 1 through the serial interface.

Next, the adapter 1 determines whether data is received from the connected product (S22), and when the data is received, takes the sender address from the received data and sets it as its own address (S23).

The data basically contains the sender address and the recipient address. In the present invention, since the adapter must be a subject in terms of data communication, the adapter must have its own address. In addition, the adapter is not connected only to a specific product, but can be connected to all products, so the address of the currently connected product is used as its address.

The adapter 1 takes the recipient address from the data received from the connected product and transmits the data to the adapter 2 of the corresponding address (S24).

In this case, since the adapter is the subject of communication only for a simple transmission command in which the command sent from the product does not require a response, the adapter 1 transmits data to the address of the adapter 2.

Next, the adapter 1 determines whether there is a response (ACK) from the adapter 2 to which data has been transmitted (S25). If there is no response, the adapter 1 retransmits the data and waits for receiving another data.

In this case, since the adapter 1 has an address set, the adapter 1 receives the response from the adapter 2, recognizes that the data transmission is normally performed, and waits for receiving another data.

In the present invention, the adapter basically transmits an address request command to a product connected to itself, and accordingly takes the sender address from the received data, sets it as its own address, takes the recipient address from the data, and sends the data to the corresponding address. It should then be programmed to retransmit the data according to the response.

In addition, although the embodiment of the present invention has described that the adapter 1 is the main body to transmit data to the adapter 2, the adapter 2 or the other adapter also transmits data with its own address and receives a response in the same manner to communicate. Can be controlled.

In the communication method of the home network adapter according to the present invention, the adapter sets its own address using the address of the product, directly transmits the data transmitted from the product, checks the response, and resends the response so that the adapter takes part in the product communication. Improve the reliability of the product and at the same time minimize the load on the product.

Claims (3)

In the communication method of the home network adapter, An address setting step of the first adapter taking a sender address from data transmitted from a product connected to the first adapter and setting the sender address as its own address; A data transmission step of the first adapter taking a recipient address from data transmitted from a product connected to the product and transmitting data transmitted from the product to a second adapter corresponding to the receiver address; And a response confirmation step of completing data transmission if there is a response from the second adapter and retransmitting data transmitted from the product to the second adapter if there is no response. According to claim 1, The address setting step further comprises the step of transmitting the address request command to the product connected to the first adapter is connected to the home network adapter. According to claim 1, And repeating the address setting step, the data transmission step and the acknowledgment step each time data is received.