JPS63237658A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To correct and change a program without requiring manual operations by automatically receiving and storing an update operation instruction on a magnetic disk and loading the update operation instruction to a main memory to execute it. CONSTITUTION:A CPU 7 sets the execution address to the start address of a ROM 4 and fetches a preliminarily stored transfer operation instruction from the ROM 4 and executes it. That is, the CPU 7 sets an initial value to a counter 14 and outputs a read signal RD to a disk control circuit 12; and when the disk control circuit 12 transfers the update operation instruction from the magnetic disk 13 to a RAM 11 and outputs a read operation completion signal RN, the CPU 7 detects this signal RN to increase contents of the counter 14 by one and transfers contents of the RAM 11 to a RAM 5. Simultaneously, the write address to the RAM 5 is set to a counter 6, and contents of the counter 6 are updated at each time of write to the RAM 5. Thus, the CPU 7 performs the facsimile communication controlled by the program which is corrected or changed by the update operation instruction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and more particularly to a facsimile machine that updates operation instructions.

[Conventional technology]

Conventionally, facsimile machines of this type have been distributed and operated over a wide area, such as at head offices, branch offices, and sales offices. On the other hand, there may be cases where it is desired to modify or change part of the operation commands for controlling the facsimile operation. In conventional facsimile machines, maintenance personnel go to the location where the facsimile machine is installed with a storage medium containing operation command data to modify or change the operation commands.

[Problem that the invention seeks to solve]

The conventional facsimile machines mentioned above require a maintenance person to be dispatched to the location where the facsimile machine is installed every time there is a modification or change in the operating instructions, which requires a large amount of manpower if there are many facsimile machines in a wide area. There are drawbacks.

[Means for solving problems]

The facsimile apparatus of the present invention includes a signal processing section that outputs a detection signal and data in the HDLC frame when an HDLC frame is detected in a communication procedure signal from a counterpart device, and an update operation that is input in response to a write signal. a storage section that stores instructions and reads out the update operation instruction in response to a read signal; a ROM that stores in advance a transfer operation instruction of the update operation instruction; and a ROM that stores the update operation instruction read out from the storage section. a memory, upon receiving the detection signal, decoding the data, and when the explanation result is an update start command of an operation command, supplying the write signal and the update operation command following the update start command to the storage unit, and transferring the data; and a CPU that receives an operation command, outputs the read signal, and transfers the update operation command from the storage section to the main memory.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

As shown in FIG. 1, a signal processing unit 1 outputs a detection signal DT and data DA in the HDLC frame when an HDLC frame is detected in a communication procedure signal from a partner device input through a line, and starts updating. a flip-flop (hereinafter referred to as FF) 2 that indicates that a command has been received;
Upon receiving the write signal WT, the update operation command is stored and the read signal R is sent.
A RAM 11 that receives D and outputs the stored update operation command.
, disk control circuit 12. A storage unit 3 including a magnetic disk 13 and a counter 14, a ROM 4 that stores transfer operation commands for update operation commands in advance, a RAM 5 as a main memory that stores update operation commands read from the storage unit 3, and a RAM 5. a counter 6 which generates the address of the write signal WT, and a storage unit 3 which receives the detection signal DT, decodes the data DA, and when the decoding result is an update start command of the operation command, stores the write signal WT and the update operation command following the update start command. Upon receiving the transfer operation command from the ROM 4, the read signals R and D are supplied to the storage section 3, and the update operation command read from the storage section 3 is sent to the RAM 5.
and a CPU 7 that transfers the data to the CPU 7.

FIG. 2 is a data format diagram of an HDLC frame used in the embodiment of FIG. 1.

In FIG. 2, the contents of data DA are usually general information, but when notifying an update of an operation command, the data DA of the first frame becomes an instruction to start updating the operation command, and the data DA of the second frame and subsequent frames are The contents of the update operation command are as follows.
The data DA of the final frame becomes an update end command.

FIG. 3 is a flowchart for explaining the operation of the CPU shown in FIG.

Below, the operation of the embodiment shown in FIG. 1 will be explained as follows.
This will be explained with reference to the figures.

Signal processing section] is 1 (
When a DLC frame is detected, the detection signals DT and HD
The data DA in the L and C frames are supplied to the CP XJ 7.

The CPU 7 receives the detection signal DT and data DA from the signal processing section 1.
When it receives this, it decodes the data DA and determines whether it is an update start command or not. When the update start command is not detected, the output of FF2 is further checked and the output is set to a low level (hereinafter "L11").
It is determined that a normal facsimile communication procedure signal has been received.

When the CPU 7 detects the update start command, it changes the output of the FF 2 from "L" to a high level (hereinafter referred to as "H") to instruct that it has received the update start command.

Also, the counter 14 of the storage section 3 is set to the initial value. This initial value is the start address of the storage area of the update operation command on the magnetic disk 13 of the storage unit 3.

The CPU 7 receives data from the second frame of the HDLC frame following the data DA indicating the update start command from the signal processing unit 1, extracts the update operation command from the data, and writes it into the RAM II. Next, the write signal WT is supplied to the disk control circuit 12.

The disk control circuit 12 stores an update operation command for the RAM 11 in the magnetic disk 13 according to the address from the counter 14, and supplies a write operation completion signal WN to the CPU 7. Upon receiving the write operation completion signal WN, the CPU 7 increments the counter 14 by one.

By repeating the above operations, update operation commands are sequentially stored in the magnetic disk 13.

The CPU 7 receives data DA of the last frame of the HDLC frame from the signal processing unit 1, and when detecting an update end command from the data DA, ends the update operation and converts the output of the FF 2 from "HI+" to "LI+".

Next, the transfer of the update operation command to the RAM 5 (ie, starting the program) will be explained.

The CPU 7 sets the execution address to the start address of the ROM 4, fetches the previously stored transfer operation command from the ROM 4, and executes it.6. The following program is stored in the RoM 4 as a transfer operation command.

First, the CPU 7 sets an initial value in the counter 14 (this initial value is the start address of the storage area of the update operation command of the magnetic disk 13), and then outputs a read signal RD to the disk control circuit 12 to control the disk. When the circuit 12 transfers the update operation command from the magnetic disk 13 to the RAMII and outputs the read operation completion signal RN, the CPU 7 detects the read operation completion signal RN, increments the counter 14 by 1, and outputs the read operation completion signal RN.
Transfer the contents of AMII to RAM5. At the same time, set the write address to RAM 5 in counter 6, and
is updated every time it is written to the RAM 5.

The above operations except for setting the initial value to the counter 14 are repeated until all update operation commands from the magnetic disk 13 are read out.

After completing the above operations, the CPU 7 sets the execution address to R.
The update operation command set to the start address of AM5 and stored in RAM5 is fetched and executed.

Thereby, the CPU 7 can perform facsimile communication controlled by the program modified or changed by the received update operation command.

〔Effect of the invention〕

As explained above, the present invention transmits an update operation command to a facsimile machine using a line when it is necessary to modify or change a program, and the facsimile machine automatically receives the update operation command. By storing update commands on a magnetic disk, and loading update operation commands into main memory and executing them, programs can be modified or changed without requiring human intervention even if a large number of facsimile machines are installed in a wide area. There is an effect that it can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a data format diagram of the HDLC frame used in the embodiment shown in the figure, and is a flowchart for explaining the operation of the CPU shown in FIG. 1... Signal processing unit, 2... FF, 3... Storage unit,
4...ROM, 5...RAM, 6...Counter,
7...CPU. 11...RAM, 12...Disk control circuit, 13
...Magnetic disk, 14...Counter, DA...
Data, DT...detection signal, RD...read signal, R
N: Read operation completion signal, WN: Write operation completion signal, WT: Write signal.

Claims (1)

[Claims] a signal processing unit that outputs a detection signal and data in the HDLC frame when an HDLC frame is detected in a communication procedure signal from a partner device; and a signal processing unit that stores an update operation command input in response to a write signal and converts it into a read signal. a storage unit that reads the update operation command in response to the update operation command; a ROM that stores in advance a transfer operation command of the update operation command; a main memory that stores the update operation command read from the storage unit; receiving the data, decoding the data, and when the explanation result is an update start command of the operation command, supplying the write signal and the update operation command following the update start command to the storage unit, and receiving the transfer operation command to read the data. A facsimile apparatus comprising: a CPU that outputs a signal to transfer the update operation command from the storage section to the main memory.