JPS581446B2 - INTERFACE SKYLOB JITSUSOHO - Google Patents

Description

[Detailed Description of the Invention] The present invention is an inter-device connection method in an information processing device, etc.
Specifically, the present invention relates to a method of mounting an inter-device interface circuit when a plurality of devices are mounted on one rack and signals are transmitted between the devices.

Conventionally, this type of inter-device ink face circuit section is shown in Fig. 1a,
It was implemented as b, c, and d.

As shown in the front view of FIG. 1a, the side view of FIG. 1b, and the detailed view of FIG.
SR5 is mounted in two rows, left and right, and devices SL1 to S
The internal circuit card 2a on which the logic circuit of L5 is mounted is mounted on the shelf 4a, and the internal circuit card 2 of the devices SR1 to SR5 is attached to the shelf 4a.
b is housed in the shelf 4b, and an interface card 1A having an interface circuit for receiving signals from the left and right devices is housed in the shelf 3 in the center.

Further, as shown in FIG. 1d, the interface card 1A has interface circuits 14a and 14b for two left and right devices, such as SR2 and SL2, and upper and lower devices, such as SL1 (SR1),
Connector 11 for bus signal transmission to SL3 (SR, 3)
a, 11b, a through pattern group 15 connecting the connectors 11a, 11b, and a connector 1 for signal transmission of the left and right devices.
It is equipped with 2ap12b.

Transmission of bus signals between the upper and lower devices is performed via the flat cable 7A stretched across the front side 21a of the shelf 3, connectors 10a, 10b, 11a, 11b, and the through pattern group 15 within the interface card 1A.

For signal transmission to the left and right devices, signals received by the interface circuits 14a, 14b connected to the through pattern group 15 are transmitted to the connectors 12a, 12b, . This is done by transmitting via the pin 6 on the back board 5, the connectors 13a and 13b, and the flat cable 8 stretched over the back side 2lb, and processed within the internal circuit cards 2a and 2b.

As is clear from Figures 1b and d, the bent portion 1 of the bus flat cable 7A connecting the upper and lower devices is
Therefore, the flat cable 7A becomes longer.

As the number of devices increases, the cable length due to the bent portion 16 increases significantly.

This causes a delay in transmission speed, and has been a problem when attempting to increase the speed of the device.

Furthermore, as shown in FIG. 1d, variations in pattern length occur in the through pattern group within the interface card 1A.

For example, there is a length difference of 2×(lt+l2) between the outermost pattern 15a and the innermost pattern 15b.

As the number of devices increases, especially the farthest devices SL5, SR
In 5, this pattern length difference is superimposed, so
This increases the variation (shitter) in the signal reception time at the input terminal of the interface circuit 14a or 14b, which poses a problem when speeding up the device.

Furthermore, since the cables and connectors are provided on both sides of the rack, maintenance, repair, etc. are time-consuming.

In order to solve these problems, the present invention provides a housing that uses a flat cable without bending and houses a group of interface cards having connectors on all sides, interface circuits for left and right devices, and through patterns of uniform length. By installing the cable on one side of the rack, it is possible to increase the speed of the device and also to enable maintenance and repair of cables and connectors in a short time.The drawings will be described in detail below.

Figures 2a, b, c, and d show embodiments of the present invention, and as shown in the front view of Figure 2a, the side view of Figure 2b, and the detailed view of Figure 2C, there are multiple Devices SL1 to SL5, SR1
~ SR5 is mounted in two rows, left and right, and device SL1 ~
The internal circuit card 2a of SL5 is placed in the shelf 4a, and the internal circuit card 2b of the devices SR1 to SR5 is placed in the shelf 4b.
to be accommodated.

A housing 17 containing a group of interface cards is fixed to the back side 2lb of the shelves 4a and 4b using a support fitting 18.

In addition, the interface card 1B has interface circuits 14a and 14b for two left and right devices, as shown in FIG. 2d,
Connectors 11a and 11 for bus signal transmission to the top and bottom are provided on all sides.
b. It is composed of connectors 12a and 12b for signal transmission to the left and right devices, and a through pattern group 15 for bus signal transmission, and the through pattern group 15 is straight so that each pattern length is uniform.

Reference numeral 20 denotes a metal fitting for fixing the cards together when a plurality of interface cards 1B are required.

Transmission of bus signals between the upper and lower devices is performed via a flat cable 7A that is stretched on the back side 2lb and has no bends, connectors 10a, 10b, 11a, 11b, and a through pattern group 15 in the interface card 1B. For signal transmission to the left and right devices, signals received by the interface circuit 14as14b connected to the through pattern group 15 are transmitted to the connectors 12a, 12b and 19a, 19b and 1.
3as13b and the flat cable 8, and is processed within the internal circuit cards 2a and 2b.

Further, power is supplied to the interface circuits 14a and 14b through the flat cable 8.

For example, the power supply to the interface circuit 14a is connected to the device SR.
Connector 6 on backboard 5 of 1, connector 13a is supplied via cable 8.

Power to the interface circuit 14b is supplied from the connector 6 on the backboard 5 of the device SL1 via the connector 13b cable 8.

As is clear from FIG. 2C, by adopting the mounting method of the present invention, a short flat cable 7 without bending can be used as a flat cable for bus signal transmission between upper and lower devices.
A can be used, and as a result, even if the number of devices increases, there is no delay in transmission speed due to the bent portion, and the speed of the device can be increased.

Furthermore, as is clear from FIG. 2d, by making the pattern lengths of the through pattern groups in the interface card 1B uniform, even in the farthest end device, variations in signal reception time at the interface circuit input end (sitter) can be reduced. becomes smaller, which is advantageous when increasing the speed of the device.

As explained above, a group of interface cards that use a flat cable for bus signal transmission without bending, have connectors on all sides, are equipped with an interface circuit, and have a group of through patterns with uniform pattern length are installed in a shelf. As a result, transmission speed delays and time variations can be reduced, making it possible to increase the speed of the equipment, and since connectors and cables can be installed only on one side of the rack equipment, maintenance and repairs can be done in a shorter time. There is an effect.

Although this embodiment shows a case where a receiving circuit is used as an interface circuit, the same effect can be obtained when a transmitting circuit is used.

Further, although an example of two devices on the left and right is shown, the present invention can be applied even if the number of devices increases to three or four devices.

[Brief explanation of the drawing]

Fig. 1a is a front view of an example of rack mounting using the conventional mounting method, Fig. 1b is a side view of Fig. 1a, Fig. 1C is a detailed view of Figs. 1a and b, Fig. 1 d is a schematic diagram of the interface card used in FIG. 1a, FIG. 2a is a front view of the mounting example of the present invention, FIG. 2b is a side view of FIG.
Figures a and b are detailed views, and Figure 2d is a schematic diagram of the interface card group used in Figure 2a. In the figure, 1A and 1B are interface cards, 2a,
2b is an internal circuit card, 3, 4a, 4b are shields,
5 is the back board, 6 is the connector 6, 7A on the back board
, 7B, 8 are flat cables, 10a, 10b, 11
a, 11b, 12a, 12b, 13a, 13b, 19a
, 19b are connectors, 14a, 14b are interface circuits, 15, 15a, 15b are through patterns, 17 is a housing for accommodating the interface card group, 18 is a support for the housing, and 20 is a metal for fixing between interface cards. .

Claims (1)

[Claims] 1. In a rack system that has a plurality of stages, a plurality of devices are installed on the same stage, and signals from the outside are transmitted to the device via an interface circuit section, connectors provided on four sides and , a pattern connecting the connectors provided on two opposing sides on one side, and a pattern connecting the connectors provided on the other two opposing sides.
An interface card having an interface circuit connected between connectors provided on the sides is housed in a housing, the housing is provided in each stage on one side of the rack, and connectors are provided on two opposing sides of the one side. The cable is connected in series between each of the cases, and the interface circuit and the device on the same stage are connected via connectors provided on the other two sides. Interface circuit mounting method.