JPS6345772A - Dual-bus system mounting method - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a dual bus system mounting method on a printed circuit board.

Prior Art For example, a conventional board mounting method in a dual bus system as shown in FIG. 4 was as shown in FIG. In addition, Figure 6 shows boards A, B, C, and E in Figure 4.
, F, and FIG. 7 shows the structure of board D in FIG. 4.

As another example, a conventional board mounting method in a dual bus system having a local bus L as shown in FIG. 8 was as shown in FIG. In addition,
FIG. 10 shows the structure of boards G and H of FIG. 8. Boards A to E in FIG. 8 are similar to those shown in FIGS. 6 and 7.

As shown in the two examples above, in the conventional board mounting method in a dual bus system, a signal cable SC is always required for a board mounted across two buses, bus I and bus II. There was a problem. As described above, using the signal cable SC has not only the physical and economical problems of simply requiring a signal cable, but also the serious problem of lowering reliability.

Purpose The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in the conventional dual-bus system implementation method, and to develop a dual-bus system that can reduce costs and improve reliability.・Providing a system implementation method.

The above purpose of the final configuration is to arrange the two bus backplanes in parallel in a system in which a plurality of boards are mounted in a dual bus system having two buses, bus I and bus II, and to The board connected to two buses is achieved by a dual bus system implementation method characterized by being equipped with both a bus I connector and a bus II connector.

Hereinafter, the configuration of the present invention will be explained in more detail based on examples.

FIG. 1 is a plan view showing a situation in which boards A to F (where B is two) are mounted in a dual bus system, showing an embodiment of the present invention. 3 illustrates an improved board implementation scheme for the illustrated system.

This embodiment shows a case where two buses, bus I and bus II, have the same specifications, and their backplanes 10 and 11 are arranged parallel to each other in opposite directions. Furthermore, regarding the mounting position of each board, the slots installed on the backplanes 10 and 11 described above are
The front and back sides are arranged so that they are rotationally symmetrical.

The structure of each of the boards A to F is shown in Figures 2 and 3 (a).
, as shown in (b). That is, FIG. 2(a),
3(b) shows the connector connection structure of boards A-C, E, and F, and FIGS. 3(a) and 3(b) show the connector connection structure of board D. In addition, 12 in the figure is a connector, 14
indicate the slots, respectively.

As previously shown in FIG. 4, the board D is connected to the bus I and the bus ■, but in this embodiment, this connection is realized without using additional components such as signal cables. This contributes to cost reduction and improved reliability.

FIG. 11 shows a second embodiment of the present invention.
This embodiment corresponds to the system shown in FIG. 8 earlier.

3 illustrates an improved board mounting scheme.

This embodiment also shows a case where two buses, bus I and bus H, have the same specifications, and their backplanes 10 and 11 are arranged parallel to each other in opposite directions. The slots installed on the above-mentioned backplane 10.11 are arranged so as to be rotationally symmetrical on the front and back sides with respect to the mounting position of each board.

Further, in this embodiment, the backplane 13 corresponding to the local bus L is arranged parallel to the backplanes 10.11 of the buses I and II. The slots installed on the above-mentioned backplane 13 correspond to the slots on either of the above-mentioned bus I and bus II backplanes 10.11.

In the embodiment shown in FIG. 11, a situation is shown in which boards A-E (however, B is two), G, and H are mounted in a dual bus system, and each of the boards A-E
, G, and H are shown in Figures 12, 13, and 14 (
As shown in a) and (b). In other words, Fig. 12 (
a) and (b) show the connector connection structure of boards A-C and E, and FIGS. 13(a) and (b) show the connector connection structure of boards G and H.
FIGS. 14(a) and 14(b) show the connector connecting structure of board D.

Note that the board D is connected to the bus I and the bus ■ as shown in FIG. 8, but in this embodiment,
This connection is achieved without the use of additional components such as signal cables, contributing to cost reduction and improved reliability.

This is the same as in the previous embodiment.

According to each of the above embodiments, in a dual bus system, a signal cable is no longer required for a board mounted across two buses, bus I and bus II, so there are only physical and economic problems. This has the effect of preventing a decrease in reliability.

In the above embodiment, a case has been described in which two buses, bus I and bus II, in a dual bus system have the same specifications. The planes 10 and 11 are arranged in parallel and opposite to each other, and the backplane 10 described above
．． By arranging the slots installed on 11 so that they are rotationally symmetrical on the front and back with respect to the mounting position of each board, it is possible to easily connect the board from the bus ■ backplane to the bus II backplane as necessary. This has the advantage of being changeable.

In addition, if the two buses, Bus I and Bus ■ in the above dual bus system, do not have the same specifications, use the backplane 10.11 of Bus I and Bus II.

They only need to be arranged parallel to each other, and the connectors on the board need only be arranged in correspondence with the backplane.

Effects As described above, according to the present invention, in a system in which a plurality of boards are mounted in a dual bus system having two buses, bus I and bus II, the two bus backplanes are arranged in parallel. At the same time, the boards connected to the two buses pass! Since the device is equipped with both a bus connector and a bus connector, it has the remarkable effect of realizing a dual bus system implementation method that can reduce costs and improve reliability.

[Brief explanation of the drawing]

Figure 1 is a plan view showing a board mounted in a dual bus system showing an embodiment of the present invention, and Figures 2 and 3 (a) and (b) show the connector connection structure of the board. 4 and 8 are diagrams showing an example of the configuration of a dual bus system, and FIGS. 5 and 9 are diagrams showing a conventional board mounting method, and FIG. 6. 7 and 10 are diagrams showing the connector connection structure of the boards in FIGS. 4 and 8, and FIG. 11 is a diagram showing another embodiment of the present invention in which the board is mounted in a dual bus system. 12, 13, and 14 each (
Figures a) and (b) are diagrams showing the connector connection structure of the board. L: Local bus, 10, 11: Bus I, bus II backplane, 12: Connector, 13: Local bus L
backplane, 14 slots. Figure 1 Figure 2 Figure Z Figure 3 (a) (b) Cow Figure 5 A B CD E B F 6th
Figure q Figure 8 Figure 9 Figure 11 Figure 12 (a) (b)

Claims (4)

[Claims] (1) In a method in which multiple boards are mounted in a dual bus system having two buses, bus I and bus II, the two bus backplanes are arranged in parallel and connected to the two buses. The board to be
A dual-bus system implementation method characterized by being equipped with both Bus I and Bus II connectors. (2) In a system in which a plurality of boards including a plurality of boards having local buses are mounted in a dual bus system having two buses, bus I and bus II, a backplane for the two buses and a backplane for the local bus A dual-bus system implementation method, characterized in that backplanes are arranged parallel to each other, and the boards connected to each bus are each equipped with a connector corresponding to the bus to be connected. (3) In a method of mounting a plurality of boards in a dual bus system having two buses of the same specification, Bus I and Bus II, the two bus backplanes are arranged parallel to each other in opposite directions, and The board connected to the above two buses has a bus I connector and a bus I connector.
A dual bus system mounting method characterized by the II connectors being installed so that they are rotationally symmetrical on the front and back. (4) In a method in which multiple boards including multiple boards having local buses are mounted in a dual bus system having two buses of the same specification, Bus I and Bus II, the two bus backplanes are connected to each other. The local bus backplanes are arranged parallel to each other in opposite directions, and the boards connected to the two buses have connectors for bus I and bus II.
A dual bus system implementation method, characterized in that the board connected to the local bus is also equipped with a connector corresponding to the local bus.