JPH0715157A - Monitoring device for putting-in and pulling-out of transmission package of clock signal - Google Patents

Abstract

PURPOSE:To accurately detect the putting-in and pulling-out of a transmission package of clock signals from a connector regardless of the insertion angle of the package against the connector even when the package is obliquely inserted into the connector. CONSTITUTION:Putting-in and pulling-off detecting pieces 3-1 and 3-2 having lengths shorter than those of other signal connecting pieces are provided on both sides of the inserting section 2 of a clock signal transmission package 1. A package putting-in and pulling-out monitoring section 7 which maintains a clock signal transmission line in a connected state during the period when both pieces 3-1 and 3-2 do not detect the putting-in and pulling-off state of the package 1, but, when either one of the pieces 3-1 and 3-2 detects the putting-in and pulling-out of the package 1, disconnects the clock signal transmission line is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clock signal transmitting package which is connector-connected to a clock supplying device for transmitting a clock signal to a transmitting device on the receiving side, while keeping the clock supplying device in an operating state. The present invention relates to a clock signal transmission package insertion monitoring device capable of inserting a signal transmission package.

[0002]

2. Description of the Related Art FIG. 5 is a diagram for explaining a schematic configuration of a clock signal transmission system. In FIG. 5, reference numeral 51 is a clock signal supply device.
Is for supplying a clock signal to the transmission device 53, and is a dual clock signal transmission package 52-1, 52.
-2 is provided.

Each clock signal transmission package 52
Reference numerals -1, 52-2 are insertable into the clock signal supply device 51 and the connector. In addition, the transmission device 53
The clock signal received from the clock signal supply device 51 operates as an in-device clock, and has a configuration including dual clock signal receiving packages 54-1 and 54-2.

With this configuration, the clock signal supply device 51 allows the clock signal receiving package 54-
A clock signal is supplied to the transmission device 53 via 1, 54-2. By the way, when the clock signal transmission packages 52-1 and 52-2 are inserted during the operation of the clock signal supply device 51 which supplies the clock signal to the transmission device 53, the clock signal is not disturbed. This may cause an abnormality such as an error on the transmission device 53 side.

Therefore, conventionally, the clock signal transmission packages 52-1 and 52-2 are inserted while the clock signal supply device 51 is operating, or the transmission device 53 side is prepared for the influence of disturbance or the like. After forcibly switching the active system,
It depends on the method of inserting the clock signal transmission packages 52-1 and 52-2. These problems are caused by the clock signal supply device 51 and the clock signal transmission package 52-1.
Since 52-2 is connected with a connector, when inserting the clock signal transmission packages 52-1 and 52-2 in operation, when the output signal is cut off, it is not electrically disconnected. , It is caused by disconnection due to mechanical disconnection.

Then, the clock signal transmission package 52
When the -1, 52-2 are removed, for example, the contacts come off while repeatedly connecting and disconnecting, so that a disturbance is added to the output signal. In addition, the clock signal transmission package 52-
Depending on the state in which the power supply terminal and the ground terminal are disconnected when the 1, 52-2 are pulled out, the circuit operation becomes unstable, which may affect the output signal.

In order to solve these problems, usually, by making a difference in length between each pin of the connector insertion portion, connecting the ground, the power supply, and the clock signal in this order to prevent instability of the circuit, The influence on the output signal is suppressed. However, in this case, the output signal terminal cannot prevent the above-mentioned state, and thus the receiving side device is affected.

Therefore, the idea of the stepped pin is further advanced, and the output signal is detected by the circuit for detecting the insertion of the package due to the disconnection of the pin which is sufficiently shorter than other pins and the detected information. A device having a prohibiting circuit has been proposed (see Japanese Patent Laid-Open No. 63-73597). That is, in this proposal, as shown in FIG. 6, the printed wiring board 61 includes an insertion detection circuit 63, a general logic circuit group 64, insertion information pins 65-1 and 65-2, and a large number of pins 6.
6-1, ..., 66-n, 67 and a resistor R are provided.

Here, the insertion detection circuit 63 is connected with two insertion information pins 65-1 and 65-2 as inputs.
The output is connected to the general logic circuit group 64 and the pin 67, and as the insertion detection circuit 63, an AND circuit is used. The general logic circuit group 64 outputs the result of the logic calculation to the pins 66-1, ..., 66-n.

The insertion information pins 65-1 and 65-2 are both provided at one end of the printed wiring board 61, but the insertion information pins 65-1 and 65-2 are other than the insertion information pins 65-1 and 65-2. , 66-n, 67, and the insertion information pin 65-1 is shorter than the insertion information pin 65-2. Two insertion information pins 65-1 and 65
The resistor R is connected between -2.

Reference numeral 62 denotes a connector, and this connector 62
Is a large number of contacts 68-1, 68-2, 69-1, ...
., 69-n, 70. With such a configuration, when the printed wiring board 61 is removed from the connector 62, first, when the shortest insertion information pin 65-1 is separated from the connector 68-1 connected to the ground, the insertion information is released. The potential of the pin 65-1 rises to the same level as the power source potential of the insertion information pin 65-2 via the resistor R. Therefore, both inputs of the insertion detection circuit 63 become high potential, and its output also rises. Also, one of the outputs is connected to the connector 62 via the pin 67 and the connector 70.
Input to the maintenance control circuit (not shown)
The maintenance operation sequence is activated by the maintenance control circuit. Then, the other output of the insertion detection circuit 63 is input to the general logic circuit group 64 and is used for suppressing the output signal of the general logic circuit group 64 and the like. After that, insert information pin 6
5-2 moves away from the contactor 68-2, and as a result, the output of the insertion detection circuit 63 also ends. Finally, the other pin 66
-1, ..., 66-n, 67 are separated from the connectors 69-1, ..., 69-n, 70 of the connector 62, respectively, and the printed wiring board 61 is completely removed.

[0012]

However, in such a conventional technique, since the insertion information pin is provided only at one end of the electronic circuit board, the electronic circuit board is angled with respect to the connector. In the case of attaching and inserting it, there is a problem that the insertion operation cannot be detected due to a small difference in the insertion time between the insertion information pin and another signal pin depending on the insertion angle.

The present invention has been made in view of the above problems, and by providing the insertion information pins at both end portions of the clock signal transmission package, the clock signal transmission package is angled with respect to the connector. It is an object of the present invention to provide a clock signal transmission package insertion / removal monitoring device capable of accurately detecting an insertion / removal operation regardless of the insertion / removal angle.

[0014]

FIG. 1 shows the first aspect of the present invention.
1 is a block diagram showing the principle of the present invention. In FIG. 1, reference numeral 1 denotes a clock signal transmission package, and the clock signal transmission package 1 can be inserted into a connector by a connector insertion portion 2. 3-1 and 3-2 are insertion detection pieces, and the insertion detection pieces 3-1 and 3-2 are the connector insertion portions 2 of the clock signal transmission package 1.
Are provided at both ends of each of the other signal connection pieces 4,
It is shorter than 5, 6-1, ..., 6-n.

Further, 4 is a ground connection piece, 5 is a power supply connection piece, the ground connection piece 4 is connected to the ground, and the power supply connection piece 5 supplies power to the clock signal transmission package 1. . 6-1, ..., 6-n are clock signal output pieces, and each clock signal output piece 6-
1, ..., 6-n output clock signals.

Reference numeral 7 denotes a package insertion monitoring section, and the package insertion monitoring section 7 includes the pair of insertion detection pieces 3-.
Clock signal transmission package 1 for both 1 and 3-2
While the clock signal sending line is in the contact state while the withdrawal state is not detected, the pair of the withdrawal detection pieces 3
When any one of -1 and 3-2 detects the cleared state of the clock signal transmission package 1, the clock signal transmission line is disconnected.

Reference numeral 8 is an output prohibition unit, and this output prohibition unit 8
Receives a control signal from the package insertion monitoring unit 7 to bring the clock signal transmission line into a connection state or a disconnection state. 2 is a principle block diagram according to claim 2 of the present invention. In FIG. 2, a clock signal transmission package 1, a connector insertion portion 2, an insertion detection piece 3-1, 3-2 is shown.
The ground connection piece 4, the power supply connection piece 5 and the clock signal output pieces 6-1, ..., 6-n are the same as the configuration according to claim 1 of FIG.

Reference numeral 9 denotes a package insertion monitoring unit, and this package insertion monitoring unit 9 includes the pair of insertion detection pieces 3-.
Clock signal transmission package 1 for both 1 and 3-2
The power supply unit 10 for the clock signal transmission package 1 is turned on while the removal state is not detected. However, any one of the pair of insertion detection pieces 3-1 and 3-2 described above is used. Detects that the clock signal transmission package 1 has been removed, the power supply unit 10 is turned off.

The power supply unit 10 supplies power to each unit of the clock signal transmission package 1.

[0020]

In the clock signal transmission package insertion monitoring device according to claim 1 of the present invention described above, as shown in FIG.
The clock signal transmission package 1 can be inserted into the connector by the connector insertion portion 2, and the insertion detection pieces 3-1 and 3-provided at both ends of the connector insertion portion 2 of the clock signal transmission package 1 are provided. 2 is shorter than the other signal connection pieces, and the package insertion monitoring section 7 allows the pair of insertion detection pieces 3 described above.
Clock signal transmission package 1 for both 1 and 3-2
Although the clock signal transmission line is in the contact state while the withdrawal state of the clock signal transmission package 1 is not detected, any of the pair of insertion detection pieces 3-1 and 3-2 of the clock signal transmission package 1 is used. When the withdrawal state is detected, the clock signal transmission line is disconnected via the output prohibiting unit 8.

Further, in the clock signal transmission package insertion monitoring device according to claim 2 of the present invention described above, as shown in FIG. 2, the package insertion monitoring unit 9 causes the pair of insertion detection pieces 3- to be detected. The power supply unit 10 for the clock signal transmission package 1 is in the ON state while the withdrawal state of the clock signal transmission package 1 is not detected by any of 1 and 3-2. When the removal state of the clock signal transmission package 1 is detected by any of the insertion detection pieces 3-1 and 3-2, the power supply unit 10 is turned off.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. (A) Description of First Embodiment FIG. 3 is a block diagram showing a first embodiment of the present invention. In FIG. 3, 21 is a clock signal transmission package, and this clock signal transmission package 21 is a clock signal supply. It is provided in the device and can be inserted into a connector (not shown) by the connector insertion portion 22 thereof.

In the connector insertion portion 22 of the clock signal transmission package 21, the insertion information pins (insertion detection pieces) 23-1, 23-2 and the ground connection pin 2 are provided.
4, power supply connection pin 25, clock signal output pin 26-
1, ..., 26-n are provided. Here, the insertion detection pins 23-1 and 23-2 are provided at both side ends of the connector insertion portion 22 of the clock signal transmission package 21, and the other signal connection pins 24, 25, and 2 respectively.
It is shorter than 6-1, ..., 26-n. When the clock transmission package 21 is mounted, the insertion information pins 23-1 and 23-2 are GND.
It is a level.

The ground connection pin 24 is grounded, and the power supply connection pin 25 is the clock signal transmission package 2.
1, and the clock signal output pins 26-1, ..., 26-n output clock signals. The length of each pin is, as shown in FIG. 3, insertion detection pins 23-1, 23-2, ground connection pin 24, power supply connection pin 25, clock signal output pin 26-1 ,. , 26-n are used in the order of 26-n.

By the way, 27 is a package insertion monitoring circuit, and this package insertion monitoring circuit 27 is constituted by including an OR circuit 41, a flap prevention circuit 42 and a connection monitoring circuit 43, and detects the pair of insertion detection. Pin 23-
While neither of Nos. 1 and 23-2 detects the withdrawal state of the clock signal transmission package 21, the clock signal transmission line is kept in contact with the output inhibition circuit 28. When either of the detection pins 23-1 and 23-2 detects the withdrawn state of the clock signal transmission package 21, a control signal is sent to the output prohibition circuit 28 to disconnect the clock signal transmission line through the output prohibition circuit 28. To do.

Here, the OR circuit 41 has the insertion detection pin 2
By taking the logical sum of the detection signals 3-1 and 23-2, one of the insertion detection pins 23-1 and 23-2 is in the removed state of the clock signal transmission package 21 (electrically disconnected from the connector. The state can be detected, and this detection signal is output to the flap prevention circuit 42.

The fluttering prevention circuit 42 is provided with the insertion detection pin 23-when inserting the clock signal transmission package 21.
The fluttering of the signal caused by the ON / OFF of 1 and 23-2 is prevented and an accurate detection signal is output to the connection monitoring circuit 43, which is usually configured as a circuit using a flip-flop. The connection monitoring circuit 43
When the withdrawal state of the clock signal transmission package 21 is detected by the detection signal input from the flap prevention circuit 42, a control signal to that effect is sent to the output inhibition circuit 28 to disconnect the clock signal transmission line. In addition,
The connection monitoring circuit 43 uses the clock signal transmission package 21.
While the removal state is not detected, a control signal to that effect is sent to the output prohibiting circuit 28 to bring the clock signal sending line into a contact state.

Further, the output prohibiting circuit 28 receives a control signal from the package insertion monitoring circuit 27 to put the clock signal sending line into a connection state or a disconnection state.
With the above configuration, when the clock transmission package 21 is mounted, both the insertion information pins 23-1 and 23-2 are at the GND level, so the package insertion monitoring circuit 27 has the insertion information pin 23-1. , 23-2 are both GN
Since it is at the D level, it is determined that the clock signal transmission package 21 is in the mounted state. In this way, the package insertion monitoring circuit 27 allows the insertion information pin 23-
Since all of the circuits 1 and 23-2 are at the GND level, the clock signal transmission line is kept in the contact state via the output prohibition circuit 28 while the withdrawal state of the clock signal transmission package 21 is not detected. .

Then, in this state, the ground connection pin 24
Is grounded, power is supplied to the clock signal transmission package 21 from the power supply connection pin 25, and clock signals are output from the clock signal output pins 26-1, ..., 26-n. However, considering the case where the clock transmission package 21 is removed, in this case, the package insertion monitoring circuit 27 causes the pair of insertion detection pins 23-1 and 23-2 described above.
Since the withdrawal state of the clock signal transmission package 21 is detected in any of 3-2, the clock signal transmission line is disconnected via the output prohibition circuit 28.

That is, at this time, the insertion detection pin 23-
When either one of the pins 1 and 23-2 is in the withdrawn state (the state in which it is electrically detached from the connector), the insertion detection pins 23-1 and 23-2.
The output state of the OR circuit 41 that takes the logical sum of the detection signals 3-2 changes, and this output change is output to the flap prevention circuit 42. Generally, when the clock signal transmission package 21 is pulled out, the insertion detection pins 23-1 and 23-2 are set to O.
N / OFF is repeated, but due to the presence of the fluttering prevention circuit 42, the insertion detection pins 23-1 and 23-2 are turned ON / OFF when the clock signal transmission package 21 is pulled out.
The flapping of the signal caused by repeating OFF is prevented. As a result, an accurate detection signal is output to the connection monitoring circuit 43.

Then, in the connection monitoring circuit 43, the clock signal sending line sends a control signal to the output prohibiting circuit 28, which should be in the disconnected state, based on the detection signal inputted from the flap prevention circuit 42. As a result, the output inhibit circuit 28 disconnects the clock signal transmission line. Also, when the clock transmission package 21 is inserted, similarly, the clock signal transmission line is disconnected until both the pair of insertion detection pins 23-1 and 23-2 are electrically connected to the connector. ing.

In the state where the clock transmission package 21 is mounted, the insertion information pins 23-1 and 23
-2 may define conditions other than the GND level. As described above, according to the first embodiment of the present invention, the insertion information pin 2
By providing 3-1 and 23-2 at both end portions of the clock signal transmission package 21, even when the clock signal transmission package 21 is inserted at an angle to the connector, it is inserted regardless of the insertion angle. There is an advantage that the frequent movement can be detected accurately.

It is also possible to insert the clock signal transmission package 21 in operation without affecting the receiving device. Further, there is an advantage that the receiving device side does not need to perform the switching operation and the workability at the time of maintenance is improved. (B) Description of Second Embodiment FIG. 4 is a block diagram showing a second embodiment of the present invention. In FIG. 4, a clock signal transmission package 21, a connector insertion portion 22, insertion detection pins 23-1, 23 are provided. -2, the ground connection pin 24, the power supply connection pin 25 and the clock signal output pins 26-1, ..., 26-n have the same configurations as those of the first embodiment shown in FIG.

The package insertion monitoring circuit 29 according to the second embodiment also includes an OR circuit 41, a flap prevention circuit 42, and a connection monitoring circuit 43, like the package insertion monitoring circuit 27 according to the first embodiment. However, the pair of insertion detection pins 23-1 and 23 are provided as described above.
-2, the power supply circuit 30 (not the output inhibition circuit 28) for the clock signal transmission package 21 is turned on while none of the -2 detects the withdrawal state of the clock signal transmission package 1. When either of the pair of insertion detection pins 23-1 and 23-2 detects the removal state of the clock signal transmission package 21, the power supply circuit 3
0 is turned off.

The power supply circuit 30 supplies power to each circuit of the clock signal transmission package 21. With the above configuration, also in the case of the second embodiment, when the clock transmission package 21 is mounted, both the insertion information pins 23-1 and 23-2 are at the GND level, so the package insertion monitoring circuit. In 29, since both the insertion information pins 23-1 and 23-2 are at the GND level, it is determined that the clock signal transmission package 21 is in the mounted state. As described above, in the package insertion monitoring circuit 29, while the removal state of the clock signal transmission package 21 is not detected because both the insertion information pins 23-1 and 23-2 are at the GND level, The power supply circuit 30 is turned on.

Then, in this state, the ground connection pin 24
Is grounded, power is supplied to the clock signal transmission package 21 from the power supply connection pin 25, and clock signals are output from the clock signal output pins 26-1, ..., 26-n. However, considering the case where the clock transmission package 21 is removed, in this case, the package insertion monitoring circuit 29 causes the pair of insertion detection pins 23-1 and 23-2 described above.
Since the withdrawn state of the clock signal transmission package 21 is detected in any of 3-2, the power supply circuit 30 is turned off.

That is, at this time, the insertion detection pin 23-
When either one of the pins 1 and 23-2 is in the withdrawn state (the state in which it is electrically detached from the connector), the insertion detection pins 23-1 and 23-2.
The output state of the OR circuit 41 that takes the logical sum of the detection signals 3-2 changes, and this output change is output to the flap prevention circuit 42. After that, the fluttering prevention circuit 42 prevents the fluttering of the signal caused by repeating ON / OFF of the insertion detection pins 23-1 and 23-2 when the clock signal transmission package 21 is pulled out accurately. The detection signal is output to the connection monitoring circuit 43.

Then, the connection monitoring circuit 43 sends to the power supply circuit 30 a control signal for turning off the power supply circuit 30 based on the detection signal input from the flap prevention circuit 42. As a result, the power supply circuit 30 is turned off. In addition, also when inserting the clock transmission package 21, a pair of insertion detection pins 23-1,
The power supply circuit 30 is in the off state until both 23-2 are electrically connected to the connector.

In the state where the clock transmission package 21 is mounted, the insertion information pins 23-1 and 23
-2 may define conditions other than the GND level. As described above, also in the case of the second embodiment of the present invention, as in the case of the above-described first embodiment, the insertion information pins 23-1 and 23-2 are provided at both end portions of the clock signal transmission package 21. By providing the clock signal transmission package 21 even when the clock signal transmission package 21 is inserted at an angle with respect to the connector, the insertion operation can be accurately detected regardless of the insertion angle, and the clock signal transmission package 21 in operation Can be inserted without affecting the receiving device, and there is an advantage that the receiving device does not need to perform a switching operation and the workability at the time of maintenance is improved.

[0040]

As described in detail above, according to the clock signal transmission package insertion monitoring device of the present invention, the clock signal transmission package is provided by providing the insertion information pins at both ends of the clock signal transmission package. Even when the connector is inserted at an angle, the insertion operation can be accurately detected regardless of the insertion angle.

Further, the clock signal transmission package in operation can be inserted without affecting the receiving device, and the receiving device side does not need to perform the switching operation, and maintenance and the like can be performed. There is also an advantage that the workability in the case is improved.

[Brief description of drawings]

FIG. 1 is a principle block diagram according to claim 1 of the present invention.

FIG. 2 is a principle block diagram according to claim 2 of the present invention.

FIG. 3 is a block diagram showing a first embodiment of the present invention.

FIG. 4 is a block diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram for explaining a schematic configuration of a clock signal transmission system.

FIG. 6 is a block diagram showing a conventional example.

[Explanation of symbols]

1,2,52-1,52-2 Clock signal transmission package 2,22 Connector insertion part 3-1,3-2 Insertion detection piece 4 Ground connection piece 5 Power supply connection piece 6-1,6-n Clock signal output Piece 7 Package insertion monitoring section 8 Output prohibition section 9 Package insertion monitoring section 10 Power supply section 23-1, 23-2, 65-1, 65-2 Insertion information pin (insertion detection piece) 24 Ground connection pin 25 power supply connection pin 26-1, 26-n clock signal output pin 27, 29 package insertion monitoring circuit 28 output prohibition circuit 30 power supply circuit 41 OR circuit 42 fluttering prevention circuit 43 connection monitoring circuit 51 clock signal supply device 53 transmission device 54-1 and 54-2 Clock signal receiving package 61 Printed wiring board 62 Connector 63 Insertion detection circuit 64 General logic circuit group 66-1 66-n, 67-pin 68-1,68-2,69-1,69-n, 70 contacts R resistor

Claims (2)

[Claims] 1. A connector insertion portion (2) of a clock signal transmission package (1) which can be inserted into a connector.
Insertion detection pieces (3-1, 3-2) shorter than the other signal connection pieces are provided at both end portions of each of the pair of insertion detection pieces (3-1, 3-2). While neither detects the withdrawal state of the clock signal transmission package (1), the clock signal transmission line is in the contact state, but the pair of insertion detection pieces (3-1, 3-
Any of 2) is the clock signal transmission package (1)
A clock signal transmission package insertion monitoring device, which is provided with a package insertion monitoring unit (7) for disconnecting the clock signal transmission line when detecting the removal state of the clock signal transmission package. 2. A connector insertion portion (2) of a clock signal transmission package (1) which can be inserted into a connector.
Insertion detection pieces (3-1, 3-2) shorter than the other signal connection pieces are provided at both end portions of each of the pair of insertion detection pieces (3-1, 3-2). While neither detects the withdrawal state of the clock signal transmission package (1), the power supply unit (10) for the clock signal transmission package (1) is turned on. When one of the pair of insertion detection pieces (3-1, 3-2) detects the clearance state of the clock signal transmission package (1), the power supply unit (10) is turned off. A clock signal transmission package insertion monitoring device, characterized in that a monitoring unit (9) is provided.