JPH0923219A - Information transmitter / receiver - Google Patents

Abstract

The present invention relates to an information transmitting / receiving apparatus, and an object thereof is to achieve collision of response information from a controlled side to a control side, avoidance of erroneous reception thereof, and identification thereof. SOLUTION: The controlled device 4 recognizes the identification information by transmitting the transmitted information to a plurality of controlled devices by copying and branching the transmitted information by a branching device 2 of the transmitting device by the number of controlled devices.
-I (i is 1, 2, ..., N), in the information transmitting / receiving device that returns the response information to the transmitting device, the identification information of the transmission information is extracted, and the response information from the controlled device corresponding to the identification information is extracted. Signal output device 6 which outputs a valid signal for the signal until the next transmission information is generated, and a receiving device 8 which causes the transmission device to receive only response information from the controlled device corresponding to the valid signal in response to the valid signal. And is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmission / reception apparatus that uses transmission destination identification information of transmission information that is copied and branched and transmitted to control reception of response information returned from the transmission destination. Some large-scale devices such as communication systems are configured such that the device is composed of a plurality of printed circuit boards, and the plurality of printed circuit boards are controlled by one control circuit. In such a configuration, when the control signal from the control circuit is copied and branched to a plurality of printed circuit boards and transmitted, it is necessary to avoid collision and erroneous reception of response signals from the plurality of printed circuit boards.

[0002]

2. Description of the Related Art FIG. 10 shows the configuration of a conventional information transmitting / receiving apparatus described above. Reference numeral 100 denotes a control panel, which corresponds to the control circuit described above and includes 102-1, 102-2, 102-3, 102.
-4 is a controlled board and corresponds to the above-mentioned printed circuit board.
The control board 100 sends a control signal to the signal branching / collecting board 101. The signal branching / collecting board 101 is a controlled board 102.
-1, 102-2, 102-3, 102-4, a data branching unit 104 for copying and branching a control signal, and responses from the controlled boards 102-1, 102-2, 102-3, 102-4. An OR unit 106 for receiving a signal.

From the control panel 100 to the controlled panels 102-1, 1
When transmitting control signals to 02-2, 102-3, and 102-4, the control signals are copied and branched into control signals for the number of controlled boards in the data branching unit 104. The data format of the control signal consists of an address number and transmission data (see FIG. 11). The address numbers added to one control signal are the controlled boards 102-1, 102-2,
The address number of any one of the controlled boards 102-3 and 102-4.

The copied and branched data signals are output to the controlled boards 102-1, 102-2, 102-3, 102-4.
Transferred to Each controlled panel 102 that has received the data signal
-1, 102-2, 102-3, and 102-4 analyze the address signal, and when it matches the address signal assigned to the self, the data signal received is regarded as being addressed to the self, and the data signal is take in.

The controlled panel that has received the data signal returns a response signal to the control panel 100. The response signal consists of an address signal and data (see FIG. 11). Control panel 1
00 receives the response signal by the OR unit 106.

[0006]

When the above-mentioned data signal transmission / reception and response signal transmission / reception are normally performed, no problem occurs.

However, if there is a second controlled board that incorrectly analyzes the address signal in addition to the first controlled board that correctly analyzes the address signal, the first controlled board and the second controlled board Response signal from the controlled panel of the control panel 10
Since it is returned to 0, collision of response signals occurs in the OR unit 106, and an erroneous response signal is received. The conventional device has no means for avoiding such a collision.

The above-mentioned collision occurs when the response signals are simultaneously returned from two or more controlled boards, but the response signals are transmitted from the two or more controlled boards at different times. If it is returned, the above collision does not occur. However, when the response signal from the controlled panel that responds erroneously to the correct response signal is returned early or late, the erroneous response signal is received early or late. Therefore, in the conventional device, reception of an incorrect response signal cannot be avoided.

Further, there is no means for identifying the above-mentioned collision or erroneous reception. The present invention was created in view of such technical problems, and provides an information transmitting / receiving device capable of achieving collision of response signals from a controlled side to a control side, erroneous reception thereof, and their identification. That is the purpose.

[0010]

FIG. 1 shows a block diagram of the principle of the invention described in claims 1 and 3. FIG. 2 shows a block diagram of the principle of the invention according to claims 2 and 4.

According to the first aspect of the present invention, as shown in FIG. 1, transmission information including identification information unique to the controlled device is obtained by copying and branching by the branching device 2 of the transmitting device by the number of controlled devices. Controlled device 4-i (i is 1, 2, ...,) that has transmitted the transmission information to a plurality of controlled devices and has recognized the identification information.
In the information transmission / reception device that returns response information from N) to the transmission device, the identification information of the transmission information is extracted, and the effective signal for the response information from the controlled device corresponding to the identification information is generated as the next transmission information. A signal output device 6 that outputs the response signal to the active signal and a receiving device 8 that causes the transmitting device to receive only the response information from the controlled device corresponding to the valid signal in response to the valid signal. To do.

According to a second aspect of the present invention, as shown in FIG. 2, transmission information including identification information unique to the controlled device is obtained by copying and branching by the branching device 2 of the transmitting device by the number of controlled devices. Controlled device 4-i (i is 1, 2, ...,) that has transmitted the transmission information to a plurality of controlled devices and has recognized the identification information.
In the information transmitting / receiving device that returns response information from N) to the transmitting device, the identification information of the transmission information is extracted, and the valid signal for the response information from the controlled device corresponding to the identification information does not correspond to the identification information. A signal output device 12 that outputs an invalid signal corresponding to the response information from the controlled device until the next transmission information is generated, and only the response information from the controlled device corresponding to the valid signal in response to the valid signal. A receiver 8 for receiving the transmitter and a detector 10 for outputting a detection signal in response to the invalid signal and response information from the controlled device corresponding to the invalid signal are provided. .

According to a third aspect of the present invention, as shown in FIG. 1, in the information transmitting / receiving apparatus according to the first aspect, the valid signal is a low level or a high level of a binary signal, and the receiving device 8 is A receiving circuit corresponding to each of the controlled devices, each receiving circuit receiving response information from the controlled device corresponding to the valid signal of the binary signal in response to the valid signal of the binary signal. To do.

According to a fourth aspect of the present invention, as shown in FIG. 2, in the information transmitting / receiving apparatus according to the second aspect, the valid signal is a low level or a high level of a binary signal, and the invalid signal is 2. The high or low level of the value signal,
The receiving device has a receiving circuit for each of the controlled devices,
Each of the receiving circuits receives response information from the controlled device corresponding to the valid signal in response to the valid signal of the binary signal, and the detection device has a detection circuit for each corresponding controlled device. However, each of the detection circuits outputs the detection signal in response to an invalid signal of the binary signal and response information from the controlled device corresponding to the invalid signal.

[0015]

According to the present invention, when the transmission information is copied and branched and transmitted to the plurality of controlled devices 4-1 to 4-N, the identification information of the transmission information is extracted by the signal output device. The valid signal corresponding to the response information returned from the controlled device corresponding to the extracted identification information is output from the signal output device 6 until the next transmission information is generated.

Therefore, only the response information from the controlled device that correctly responds to the transmission information is received by the receiving device 8, and the response information returned from the controlled device that has made an incorrect response is not received. Collision of response information can be avoided, and erroneous reception of response information can be avoided. According to the invention described in claim 2, the plurality of controlled devices 4
-1 to 4-N, when the transmission information is copied and branched and transmitted, the identification information of the transmission information is extracted by the signal output device and is returned from the controlled device corresponding to the extracted identification information. Valid signal and invalid reception for response information from the controlled device that does not correspond to the identification information are output until the next transmission information is generated from the signal output device 6.

Therefore, only the response information from the controlled device that correctly responds to the transmission information is received by the receiving device 8, and the response information returned from the controlled device that has made an incorrect response is not received. Collision of response information can be avoided, and erroneous reception of response information can be avoided. A detection signal is output from the detection device in response to the invalid signal and the response information from the controlled device corresponding to the invalid signal. The output detection signal detects a collision without causing a collision and also identifies the controlled device that caused the detection.

According to a third aspect of the present invention, the effective signal is a binary signal, the receiving device is provided with a receiving circuit for each controlled device, and the receiving circuit is configured to respond to the binary signal. It is possible to prevent the collision of the response information and the erroneous reception of the response information by producing the same operation as that of 1. Claim 4
In the invention described, the valid signal and the invalid signal are binary signals,
The receiving device is provided with a receiving circuit for each controlled device, the receiving circuit is configured to respond to a valid signal of a binary signal, and the detecting device is provided with a detecting circuit for each of the controlled devices. Each of the circuits is configured to respond to the invalid signal of the binary signal and the response information from the controlled device corresponding to the invalid signal so as to produce the same operation as that of claim 2, collision of response information, and response It is possible to prevent the erroneous reception of information and also to detect the collision and to identify the controlled device that has caused the detection without causing the collision.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an embodiment of the invention described in claims 1 to 4. In this embodiment, when the address number of the control signal is extracted to the conventional device shown in FIG. 10 and the address number is assigned to the controlled panel, a valid signal is output, and otherwise an invalid signal is output for each controlled panel. And an address extracting unit 32 for receiving the response signal in response to the valid signal, and a gate unit 34 for outputting a detection signal in response to the invalid signal and the response signal from the controlled panel corresponding to the invalid signal. Consists of

The address extractor 32 comprises an extractor for extracting an address number from the control signal and a decoder for decoding the extracted address number and outputting a binary signal until the next control signal arrives. do not do. Decoder 2
For example, the low level of the value signal is the valid signal described above, and the high level is the invalid signal described above. The binary signal * DEC1 shown in FIG. 4 is sent to the controlled board 102-1, the binary signal * DEC2 shown in FIG. 4 is sent to the controlled board 102-2, and the binary signal * DEC3 shown in FIG. -3, the binary signal * DEC4 shown in FIG. 4 corresponds to the controlled board 102-4.

The detailed structure of the gate section 34 is shown in FIG. In FIG. 4, an AND circuit 40, an inverter circuit 42, a NAND circuit 44, and a latch circuit 46 are provided for each controlled panel. However, in those reference numbers, -1,-
Controlled boards 102-1 and 102 by adding 2, -3 and -4
-2, 102-3, 102-4, respectively.

An AND circuit 4 corresponding to any controlled board
0-1 to 40-4 are also input with the data from the controlled panel and the binary signal from the decoder via the inverter circuits 42-1 to 42-4, and the output signal is the OR unit 106.
Supplied to Similarly, the NAND circuits 44-1 to 44-
Reference numeral 4 is a response signal from the corresponding controlled panel and the binary signal, and its output signal is the latch circuits 46-1 to 4-4.
6-4 is supplied.

3 and 4, the address extraction unit 32 of FIG. 3 corresponds to the signal output device 6 of FIG. 1 and the signal output device 12 of FIG. 2, and the data branching unit 104 of FIG. 1 and FIG. Corresponds to the branching device 2. Controlled boards 102-1 to 1
02-4 is the controlled devices 4-1 to 4- of FIG. 1 and FIG.
Corresponding to N, the AND circuits 40-1 to 40-4, the inverters 42-1 to 42-4, and the OR unit 106 correspond to the receiving device 8 in FIGS. 1 and 2. The NAND circuits 44-1 to 44-4 and the latch circuits 46-1 to 46-4 are shown in FIG.
2 corresponds to the detection device 10 of FIG.

The operation of the embodiment of the invention according to claims 1 to 4 configured as above will be described below. From the control panel 100 to the controlled panels 102-1 and 1-1,
It is assumed that a control signal (refer to FIG. 11 for the signal format) is transmitted to 02-2, 102-3, and 102-4.

At the time of the transmission, the address number of the control signal is extracted and determined by the address extracting unit 32, and a low level binary signal (valid signal) is output to the output terminal of the decoder corresponding to the address number for the next control. A signal is output until the signal is generated, and a high-level binary signal (invalid signal) is output to the output terminal of the decoder that does not correspond to the address number until the next control signal is generated.

Therefore, the control signal is copied and branched by the data branching unit 104 in the same manner as in the conventional case, and the controlled panel 102-
1, 102-2, 102-3, 102-4, when the response signal is returned only from the controlled panel corresponding to the address number, the response signal returned is The signal can be normally received via the AND circuit and the OR unit 106 corresponding to the low level binary signal.

On the other hand, the controlled board to which the address number of the control signal is assigned returns a correct response signal, whereas the controlled board to which the address number of the control signal is assigned. Even if a controlled board other than the above returns an erroneous response signal, the binary signal of the decoder corresponding to the controlled board that erroneously returned the response signal is a high level binary signal (invalid signal). ) And the AND circuit corresponding to this high-level binary signal is placed in a state in which it is not gated by the inverter circuit, and therefore, the AND circuit other than the controlled panel to which the address number of the control signal is assigned is set. The response signal returned from the control panel will not be erroneously received via the corresponding AND circuit and OR unit 106.

This is specifically shown in FIGS. 5 to 9.
It is. FIG. 5 shows a case where the expected correct response signal from the controlled panel and the incorrect response signal from the incorrect controlled panel are received at the same time. For example, a control signal is transmitted to the controlled panel 102-1 to control the controlled panel 102-1.
At the same time that the response signal is sent back to the control panel 100 from the controlled panel 102-4, the response signal is erroneously sent from the controlled panel
Suppose it was sent back to. Then, * DEC1 becomes a low-level binary signal, but * DEC4 becomes a high-level binary signal. Although transferred to the control panel 100, the response signal from the controlled panel 102-4 is not transferred to the control panel 100 via the AND circuit 40-4 and the OR unit 106. Therefore, it is possible to avoid the collision of the response signals taken into the control panel 100. or,
The NAND circuit 44-4 supplies a signal to the latch circuit 46-4 and sets it in the latch circuit 46-4 to generate an alarm signal, but the NAND circuit 44-1 outputs the signal to the latch circuit 46-4.
-4 is not supplied, the latch circuit 46- is not set and the latch circuit 46-1 does not generate an alarm signal. Controlled panel 102 that has returned a response signal by mistake
-4, that is, the cause of the collision occurrence can be detected without causing a collision.

Also, as shown in FIG. 6, even when an incorrect response signal is returned within the expected period of the correct response signal from the controlled panel and later than the correct response signal, In the same way as when the expected correct response signal from the controlled panel and the incorrect response signal from the controlled panel that made an erroneous response are returned at the same time, avoid the collision of the response signal and detect the cause of the collision. It can be carried out.

Also, as shown in FIG. 7, when an incorrect response signal is returned earlier than the correct response signal within the expected period of the correct response signal from the controlled panel,
Similar to the case where the expected correct response signal from the controlled panel and the incorrect response signal from the controlled panel that made an incorrect response are returned at the same time, the collision avoidance of the response signal and the detection of the cause of the collision occurrence are performed. It can be performed.

Also, as shown in FIG. 8, when an incorrect response signal is returned after the expected period of the correct response signal from the controlled panel has elapsed and later than the correct response signal. As with the case where the expected correct response signal from the controlled panel and the incorrect response signal from the controlled panel that made an incorrect response are returned at the same time, the collision avoidance of the response signal and the cause of the collision occurrence are Detection can be performed, and erroneous reception of a response signal can be avoided.

Further, as shown in FIG. 9, when an incorrect response signal is returned earlier than the expected correct response signal from the controlled panel and earlier than the correct response signal,
Similar to the case where the expected correct response signal from the controlled panel and the incorrect response signal from the controlled panel that made an incorrect response are returned at the same time, the collision avoidance of the response signal and the detection of the cause of the collision occurrence are performed. And it is possible to avoid erroneous reception of the response signal.

The control signal and the response signal may be bit-parallel.

[0034]

As described above, according to the present invention, control information is copied and branched, control information is transmitted to a plurality of controlled devices, and the control information is identified among the plurality of controlled devices. Since the response information from the controlled device corresponding to the information is fetched by using the identification information, it is possible to eliminate the collision with the response information from the controlled device that erroneously responds to the control information and the erroneous reception thereof. . It is possible to specify the controlled device that made an erroneous response.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the invention according to claim 1 and claim 3;

FIG. 2 is a principle block diagram of the invention according to claims 2 and 4.

FIG. 3 is a diagram showing an embodiment of the invention described in claims 1 to 4.

FIG. 4 is a diagram showing a specific example of a gate unit used in the embodiment of FIG.

5 is a diagram showing a first operation explanation example of the embodiment shown in FIG.

FIG. 6 is a diagram showing a second operation explanation example of the embodiment shown in FIG. 3;

FIG. 7 is a diagram showing a third operation explanation example of the embodiment shown in FIG. 3;

FIG. 8 is a diagram showing a fourth operation explanation example of the embodiment shown in FIG. 3;

FIG. 9 is a diagram showing a fifth operation explanation example of the embodiment shown in FIG. 3;

FIG. 10 is a diagram showing a configuration example of a conventional information transmitting / receiving apparatus.

FIG. 11 is a diagram showing a signal format of a control signal and a response signal.

[Explanation of symbols]

 2 Branching device 4-1 Controlled device 4-N Controlled device 6 Signal output device 8 Reception device 10 Detection device 32 Address extraction unit 34 Gate unit 40-1 AND circuit 40-4 AND circuit 42-1 Inverter circuit 42-4 Inverter circuit 44-1 NAND circuit 44-4 NAND circuit 46-1 Latch circuit 46-4 Latch circuit 102-1 Controlled board 102-4 Controlled board 104 Data branching section 106 OR section

Claims (4)

[Claims] 1. Transmission information including identification information unique to a controlled device is copied and branched by a branching device of a transmitting device by the number of controlled devices, and the transmission information is transmitted to a plurality of controlled devices, and the identification information is transmitted. In an information transmitting / receiving device that returns response information from the controlled device that has recognized the information to the transmitting device, the identification information of the transmission information is extracted, and the effective signal for the response information from the controlled device corresponding to the identification information is A signal output device that outputs until transmission information is generated, and a receiving device that responds to the valid signal and that causes the transmitting device to receive only response information from the controlled device corresponding to the valid signal. An information transmitting and receiving device characterized by. 2. The transmission information including identification information unique to the controlled device is copied and branched by a branching device of the transmitting device by the number of controlled devices, and the transmission information is transmitted to a plurality of controlled devices, and the identification information is transmitted. In an information transmission / reception device that returns response information from the controlled device that has recognized information to the transmission device, the identification information of the transmission information is extracted, and a valid signal for the response information from the controlled device corresponding to the identification information, A signal output device that outputs an invalid signal for response information from the controlled device that does not correspond to the identification information until the next transmission information is generated, and a controlled device from the controlled device that supports the valid signal in response to the valid signal. A receiving device that causes the transmitting device to receive only response information, and a detection device that outputs a detection signal in response to the invalid signal and the response information from the controlled device corresponding to the invalid signal are provided. An information transmitting and receiving device characterized by being configured. 3. The information transmitting / receiving device according to claim 1, wherein the valid signal is a low level or a high level of a binary signal, and the receiving device has a receiving circuit for each of the controlled devices, An information transmitting / receiving device, wherein each of the receiving circuits takes in response information from the controlled device corresponding to the valid signal of the binary signal in response to the valid signal of the binary signal. 4. The information transmitting / receiving apparatus according to claim 2, wherein the valid signal is a binary signal low level or high level, and the invalid signal is a binary signal high level or low level. The device has a receiving circuit for each controlled device, and each of the receiving circuits receives response information from the controlled device corresponding to the valid signal in response to the valid signal of the binary signal, The detection device has a detection circuit corresponding to each controlled device, and each of the detection circuits responds to an invalid signal of the binary signal and response information from the controlled device corresponding to the invalid signal. An information transmitting / receiving apparatus, which outputs a detection signal.