JPH0417426A - Address managing method for home bus system - Google Patents

Abstract

PURPOSE:To sufficiently transmit information for address setting to a terminal equipment by allowing an address management device to manage an equipment address of each terminal equipment according to an address table. CONSTITUTION:A home bus controller(HBC) 4 being an address management equipment references to an address table allocated with an address area by a machine classification connected to a home bus 1 to manage the address. The HBC 4 retrieves whether or not a registration requiring address in an address registration requiring command from a terminal equipment 5 is the idle address of the address table. In the case of the idle address, the HBC 4 sends a registration confirmation command to a terminal equipment and in the case of a busy address, an address duplicate command is sent. Upon the receipt of a requirement from the terminal equipment 5, since the HBC 4 replies both registration enable and registration disable state based on the result of retrieval of the address table, the address registration for equipments (5-1)-(5-3) is executed without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an address management method for managing, as a system, addresses assigned to each terminal device connected to a home bus system.

[Conventional technology]

FIG. 3 shows an example of the configuration of a home bus system. A device having a built-in IFU 2 or an IFU 2 is connected to the bus 1 through an outlet 3.

Addresses are assigned to each device as part of the home bus system, but these addresses are managed by the home bus controller (WB).
C) 4 is doing it. WBC4 manages addresses using the address table shown in Figure 5, but this address table is divided into communication (CT) type, housekeeping (HK) type, and AVC type, and each device is assigned an address table depending on its type. Only addresses in the specified area will be used. Address is top.

It is indicated by 1 byte of each lower 4 bits. For example, teleconverter (
In the telecontrol system, two addresses, 04H and 84H, are given.

The procedure for setting the device address will be explained below. Fourth
In the figure, the terminal sends a registration request command including the address that it wants to set as its own device address, with WBC 4 as the other party's address. WBC4 outputs ACK when received.

Next, a search is made to see if the address to be set for the terminal is already occupied or vacant in the address table. If it is vacant, a registration confirmation command is sent to the terminal using the address set by the terminal as a regular device address.

[Problem to be solved by the invention]

In the above device address setting procedure, when a registration request command is sent from the terminal to the WBC4, if there is no free address and the address is already in use, the terminal has an A.
A CK is sent, but of course a registration confirmation command is not sent. At this time, the terminal determines that the requested address is already occupied, sets another address, and sends the registration request command again.

In this way, in the conventional procedure, the WBC 4 only sends the registration confirmation command to the terminal to send address information, so considering that for some reason it may not be possible to send the registration confirmation command even if the address can be set. Reliability is poor in transmitting information about the status of address settings to the terminal. In other words, WBC4 regarding the address setting status
It can be said that information communication between terminals is insufficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide an address management method that eliminates the above-mentioned drawbacks and sufficiently conveys information on address settings to the terminal side.

[Means to solve the problem]

In the address management method according to the present invention, an address management device performs management by referring to an address table in which address areas are assigned according to the type of equipment connected to a home path.

In a home path system, a home bus controller (WBC) usually performs this address management. Then, it searches whether the registration request address in the address registration request command sent from the terminal is a free address in the address table, and if it is a free address, it sends a registration confirmation command to the terminal, and if it is not a free address, it checks whether the address is a duplicate address or not. I am trying to send a command.

[Effect]

When a registration request command is received from a terminal, the WBC responds whether registration is possible or not based on the result of searching the address table, so that the address registration of the device can be performed without error.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sequence diagram showing communication between the terminal and the WBC 4. Here, the address management device is WBC4. Nowadays, in the communication field, teleconference (
Let's take an example of address settings for telecontrol) type equipment. The addresses assigned in the address table shown in FIG. 5 are 04(H) and 84(H). The terminal selects address 04H and sends a registration request command in the bucket format shown in Figure 2 (al) to the path. Here, the self address is the address requesting registration, and the other party's address is the address of WBC4. Operation code A which is the content of
I(H) indicates a registration request, and the operand indicates the nature of the terminal, such as a voice terminal type.

Fill in the image data terminal system, etc. The WBC 4 searches the address table and, if 04(H) is vacant, sends a registration confirmation command in the bucket format shown in FIG. 2(b). The other party's address is the registered address. Further, A2 (H), which is the content of the operation code, indicates that registration has been confirmed.

As a result of WBC4 searching the address table, it is already 04
If address (H) is occupied, an address duplication command is sent as shown in FIG. This command is sent after a certain period of time after receiving the registration request command. This command does not have to be in the form of a bucket; for example, an agreed word may be sent instead of an ACK. When the terminal receives this address duplication command, it refers to the address table, selects 84(H) as the address in this example, and sends the registration request command again in the format shown in FIG. 2(a).

When the address 84 (H) is not occupied, the WBC 4 sends the registration confirmation command shown in FIG. be notified visually or audibly.

〔Effect of the invention〕

As described above, according to the present invention, when a terminal sends an address registration request command to the home bus controller, which is the address management device of the home bus system,
The home bus controller always sends a registration confirmation command if registration is possible, and an address duplication command if registration is not possible, so the terminal can completely obtain the system's address registration information, and if the address is set incorrectly. It has the effect of being able to be carried out without any problems.

[Brief explanation of the drawing]

Figure 1 is an address registration sequence diagram according to the present invention, Figure 2 is an address registration sequence diagram according to the present invention.
Figure (b) is an example of the format of the registration request command and registration confirmation command, Figure 3 is an example of the configuration of the home lot system, Figure 4 is the address registration sequence diagram of the conventional example, and Figure 5 is the address table. Yes. 1-Bus, 2-IFU. 3-Outlet, 4-WBC (Address management value W).

Claims (1)

[Claims] In a home bus system, an address management device manages the device address of each terminal according to an address table, searches whether the registration request address in the address registration request command sent from the terminal is a free address in the address table, and searches for a free address in the address table. An address management method characterized by sending a registration confirmation command to a terminal if the address is an empty address, and sending an address duplication command if the address is not a free address.