JPS5835622A - Signal cable connecting system - Google Patents

Abstract

PURPOSE:To confirm the connection state visually, easily, and surely, by displaying the cable connection state in both sides of a signal cable with light emission when two devices are connected by the signal cable. CONSTITUTION:When an interface 10 and a signal cable 30 or a peripheral device 20 and the cable 30 are not connected by a connector 40 or 50, the cathodes of LEDs 104 and 204 are not in the ground level, and therefore, a potential difference is not generated between anodes and cathodes, and LEDs 104 and 204 are extinguished. When the interface 10 and the device 20 are connected through connectors 40 and 50 by the cable 30, the cathodes of LEDs 104 and 204 are in the ground level, and a potential difference is generated between the anodes and cathodes, and the LEDs 104 and 204 are lit.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a signal cable connection method KrJA suitable for connecting a peripheral device to a main device.

In electronic computer systems, as shown in 1st + ¥4, the center of the system? central processing unit (hereinafter referred to as C
In general, an input capacitor 3 is provided for carrying out a data output meeting between the PU (referred to as PU) 1 and the peripheral equipment fIk2. Then, an interface 4 for controlling a cheater line (not shown) peculiar to the peripheral device 112 is connected to the input/output path 3, and this interface 4 and the peripheral device 2
Accordingly, data input/output between CPtJ7, l/f1 side devices f#, and 2 is performed via the input/output bus 3.

Incidentally, the connection between the interface 4 and the peripheral fold *2 is generally made by the signal cable 7 through the connector 5, 6 in many cases.

In this case, if the signal cable 7 is securely connected to the interface 4 and the peripheral equipment *2 via the connector 5.6V, there will be no problem, but if the connection is insufficient, it may be necessary to assemble the system, or to arrange the on-site piece. This will cause a serious problem at Cape Toki - but signal cable 7 is connector 5.6?
via interface 4 and peripherals jK111!
tPc+111 is generally checked by visually observing the connector JEAF, making it difficult to make an accurate determination. For this reason, when assembling the system or F! A serious hindrance to the current situation? There was a drawback that it took a long time to figure out the cause of KM when a problem occurred. Moreover, in recent years, as electronic financial statements have become larger and system configurations have become more complex, the number of required signal cables has also increased significantly, increasing the number of signal cables required and increasing the rate at which the above-mentioned problems occur. There was a tendency to

Since the present invention was made in consideration of the above circumstances, the 1001 points are as follows:
#K” When connecting two device tube signal cables, such as between a main device and a peripheral device, the cable connection condition a
Light emitting display can be performed at both ends of the T-signal cable,
The object of the present invention is to provide a signal cable connection system that allows the connection state of the signal cable to be visually checked extremely easily and reliably.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. Note that this embodiment is implemented in a system in which an interface connected to a CPU@O input/output path and a peripheral device are connected to a connector by a signal cable, as in the conventional example.

FIG. 2 shows the parts of the above system according to the present invention, where 10 is an interface and 20 is a peripheral device.

30 is a signal cable for connecting the interface 10 and the peripheral @20, and 40.50 is a connector for connecting the signal cable. The signal cable 30 has a signal line 301 for transmitting and receiving signals, and a signal line 3 that has been cut by a new km.
0 j , 30B.

In the interface IO, 101 is a line driver (hereinafter referred to as LD), 10:I is a line receiver [
(hereinafter referred to as LR).

The output end of LDIOI and the input end of LRI010 have a resistance of 1.
■It is connected to the electric @Vcv via the mechanical resistance! Ground CG (Q bolt) K is connected through the snow.

On the other hand, in the peripheral device 20, 2019-1LD (line dry/<), 202 is LH (line receiver), the output terminal of LDIOI and the input terminal of L7Rxoxv are connected to the power supply Tap K through the resistor 111 ■Connected to ground PG (0 & root) through a connection. Then, the interface 10 and the peripheral device 2
0 is connected by the signal cable δO through the connection 40.5O1-9, and the transmission signal to the peripheral 1ITJO of the interface 10 is input to x and 'rHox via LDIOI and the signal line B011. Similarly, the transmission signal from the peripheral device 120 to the interface 10 is transmitted via the LDJrOJ signal line 801 to the I, 11
02 is input.

Again interface 10, peripheral @@20 collection trig
ljtl, 103.203 is I, R line receiver) *LR103, 203 is interface 1
0 and the peripheral device @20 are connected by the signal cable 30 through the connector 40.50'/f, which also performs all detection. One pole of a light emitter, for example, the cathode of a light emitting diode (hereinafter referred to as LEiD)>104.:104, is connected to the input terminal of LRloB, 20B, and LF2
D104.204 anode (other pole of the light emitter) Kd
Power supply Vcc through resistor 11seRssvi.

Vcp is connected. Also, L R103,:R0
At the input terminal of 3 is a resistor R1, If atL, - is a power supply V
cc.

Vc- is connected. Furthermore, when the interface 10 and the peripheral device 20 are connected by the signal cable 30 through the connector 40.50, the input ends of the L R103 and 20j are connected to the ground PG of the peripheral device 20F3 and the interface through the signal lines 302 and 303, respectively. 10
It is connected to the circular ground CG. 10
5°
This is an LD (line driver) for notifying the output (detection output) of 106 L R1 (M) to a CPU (not shown).

Next, an operating tube according to an embodiment of the present invention will be explained. For example, when assembling the system, or when restoring the system in a dusty location, at least the connector 40 or the Fiw connector
o, interface 10 and signal cable! 10't or the peripheral device 20 and the signal cable 30 are not connected. In this case 1-IADXO4,! The cathode of 04 is not at ground level, so LRDI9
4.204 anode, cand connection [11 position difference does not occur, 11 flow to LND104.204 to flow tLtl/*
L7tf":)?, L I DI 04, 204 is not lit, and LED 04, 204 is not lit. Therefore, the signal cable 30
The unconnected state of mt* can be recognized.

Also, LED104. : Since the cathode of 104 is not at ground level, the cathode of LgDJ04J04, that is, LRJOJ, and the input fIs of 203 are connected to the power supply Vac.
, Vcp becomes high level state due to K. As a result, LRJOJ, 203 outputs the detection signal tube of logic 101 indicating the signal cable unconnected tube. : It is possible to prevent the inconvenience that an error signal due to the noise is input to the peripheral mfII''20 (not shown in the electric diagram) due to the presence of noise on to2.

In addition, in this embodiment, the output from LRJOJ (logical 1
The detection signal (01) is transferred to the CPU via the LD 106, and the CPU can know the signal cable connection state as needed.

On the other hand, when the interface 7A 10 and the peripheral @20 are securely connected by the signal cable 30 via the connectors 40, 50'if, the cathodes of the LBDxo4 204 are at the ground level.

A potential difference occurs between the anode and cand of LHD104.104, and 111N flows through LHD104°104. As a result, LBD 104, ED 104, 204 are lit. Therefore, by visually observing the lit state of LBD 104, 204, it is possible to confirm that the signal cable 30 is reliably connected.

Also, the cathode of LBD104°204, that is, Lllll
Since the input terminal of oB, 203 is at the ground level, L
RJOJ, m science showing 203Fi signal cable connection @I
I detection signal! The output 0105.205 is in the a state according to the detection signal of this logic 111. As a result, the L
O input to the CPU example of the reception output of R102 is permitted, and L
Since the input of the reception output of D2 (Jl to the peripheral device igo is permitted), data transmission and reception between the CPU and the peripheral IM*20 becomes possible.

In the above embodiment, the signal line for transmitting and receiving signals included in the signal cable 301/C is the signal line 301OL.
Although we have explained the case of books, the same method can be applied to two or more books. In this case, even if the signal cable has multiple signal lines for data transfer, multiple signal lines for various control signals, and multiple signal lines for transmitting and receiving signals, the signal lines to be added (the The signal line 302° in the embodiment (corresponding to BO3) is the number before El! Example and rilfi, 2 K is enough,'t
In addition, in the embodiment described above, the case where the connection form between the interface 10 and the peripheral device 120 via the signal line 1 for transmitting/receiving signals is a non-insulated type connection is explained. can. Furthermore, according to the gist of the present invention, L11103.20B, 0105゜2b5, Ln2O3, etc. are not necessarily necessary.In the above embodiment, the interface connected to the CPU input/output bus Km and the peripheral device are connected by a signal cable. Although the case has been described, for example, the input/output bus may be extended, and data input/output between two devices may be performed via a signal cable.

As detailed above, according to the signal cable connection method of the present invention, when two devices are connected by signal cables, the cable connection status 111 can be displayed by light emission at both ends of the cables. The connection status of the signal cable can be checked extremely easily and reliably by visual inspection.

[Brief explanation of drawings]

No. 111 is a schematic diagram showing the general configuration of an electronic computer system in which peripheral devices are connected by signal cables;
FIG. 2 is an essential s#I diagram showing an embodiment of a system to which the present invention is applied. 1... Central processing unit @ (cptr), 2 * 20"
'Peripheral device, 3...I/O path, 4.10...Interface, 5.6.40.50- Connector, 7゜j
O-...Signal cable, 10J, 106.201--
-5 in V5 A (LD), 102.101°xos
t, xos--line receiver (LR), 104.2
04... Light emitting diode (LID), 10S,
j OS-...andgate (G)%301. ~301...Signal twin.

Claims (1)

[Scope of claims]
ut and I! ! oMII) in which signals are exchanged, if the first and second signal lines are added to the cable, one electrode on the gflll side will connect to the 1 power supply Km continuous 1st
Light llll body' tube, above 2nd t) one on the device side! A second generator body pipe is provided in which the power is connected to the second t)@@fc*Wr via the resistor 1, and when the first device and the 20th II position are connected by the connector with the signal cable, the w11
The other at pole of the generator is connected to the second device side 0@aK) power supply via the line 11141, and the island 2
The light emitting body 0 eta is connected to the fourth line of the 101i1111i through the 1!81 line, and in the connector connection lI of the signal cable, the first and I! 2. Does the luminous body light up? 4! Kotosui signal cable connection method. (R) The other 1kK power source of the first generating body is connected to the other electrode of the above $ll!2 generating body through the resistor 1. 1P gauze%
41-odd cable connection system according to claim 1, characterized in that /% Yr. (3) The 10th device has an input control function according to the potential of the other electrode of the receiving signal tube 1!1 in the line receiver. The signal according to claim 2, wherein the receiver has an eighth human power gate 1 which inputs and controls the reception according to the potential of the other electrode of the second source. Couple connection method. (4) A patent claim that transfers a 1% signal to a host device as a signal indicating the pleat connection state of the first or second party signal cable according to the potential of the other electrode of the first or second generator. The signal cape h described in Section 2 and Section 143 of Section M of
M-continuation method.