JPH0637941A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To attain a reception even at the time of a power supply failure, and to sufficiently cope with the power supply failure for a long period of time by providing a power consumption saving function, by interrupting a power supply to a high power equipment such as a printing and recording part at the time of the power supply failure. CONSTITUTION:At the time of the power supply failure of a lighting line, a switching mechanism 14 at the time of the power supply failure and a power recovery disconnects a power source 11, auxiliary power source 12, and first power source bus 13a, and the power supply from the auxiliary power source 12 to the high power equipment is not performed, so that the power consumption of the auxiliary power source 12 can be avoided. On the other hand, the power supply from the auxiliary power source 12 to a second power source bus 13b is continued, so that the receiving function of a facsimile equipment can be maintained even at the time of the power supply failure. A CPU 2 executes the routine of the detection of the power supply failure and the power recovery, and the confirmation of the power supply failure by an interruption signal from an informing circuit 15, and allows a non-volatile memory 18 to store the data received since then. At the time of the power recovery of the lighting line, the switching mechanism 14 at the time of the power supply failure and the power recovery immediately conducts the power source 11, auxiliary power source 12, and first power source bus 13a, so that the power supply to the high power equipment can be attained, and the function of the high power equipment can be recovered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine having an auxiliary power supply at the time of power failure, and more particularly to a facsimile machine which stores received data at the time of power failure and prints and records at power recovery.

[0002]

2. Description of the Related Art FIG. 3 shows a block diagram of a conventional facsimile apparatus. In the figure, the control circuit 1 executes control of the entire apparatus based on an instruction from the CPU 2. The ROM 3 stores control execution procedures, related data, character fonts, etc., and the CPU 2 uses these to issue an instruction using the RAM 4, which is a working memory.

The communication received from the telephone line via the line control network 5 and the modem 6 is subjected to necessary processing and then printed out from the print recording unit 7. On the other hand, the transmission data enters the device from the reading unit 8, is processed by the image processing unit 9 and the control circuit 1, and is then transmitted through the modem 6 and the line control network 5. The user inputs a command from the key input unit 10.

A power source 11 supplies power to the above-mentioned mechanisms and circuits via a power source bus 13. Since a conventional general facsimile apparatus does not have an auxiliary power source, it cannot be received during a power failure. Further, even a special facsimile apparatus having the auxiliary power source 12 and capable of receiving data during a power failure does not have a power consumption saving function, so that it can handle only a short power failure.

[0005]

As described above, the conventional facsimile apparatus, whether it is a general apparatus or a special facsimile apparatus, has a problem in coping with reception during power failure.

In order to solve such a problem, the present invention provides a facsimile apparatus having an auxiliary power supply, capable of receiving data even during a power failure, and having a power consumption saving function, which can sufficiently cope with a long power failure. It is provided.

[0007]

SUMMARY OF THE INVENTION The present invention is a facsimile apparatus having a print recording unit and an auxiliary power supply at the time of power failure, which cuts off the power supply to high power equipment such as the print recording unit at the time of power failure and restores power at the time of power recovery. De-energization and recovery means for recovering energization, storage means for storing the reception at the time of power failure, and control means for taking out the reception stored at the time of power recovery from the storage means and printing and recording it in the print recording unit. Is characterized by having.

[0008]

[Function] When a power failure occurs, only the auxiliary power supply serves as a power supply source, but the energization interruption / recovery means interrupts energization to high-power devices such as the print recording unit to save power consumption during a power failure. To do. The storage means stores the incoming call during the power failure. When the power is restored, the energization cutoff / recovery means restores the energization to the high power device and restarts the print recording unit and the like. Here, the control unit takes out the stored incoming call from the storage unit and causes the print recording unit to print and record the received call.

[0009]

1 is a block diagram of an embodiment of a facsimile apparatus of the present invention. In FIG. 1, reference numeral 12 is a float type auxiliary power source, 13a is a first power source bus, and power is supplied to the print recording unit 7, the reading unit 8, the image processing unit 9, and the key input unit 10. Here, for convenience, these mechanisms and circuits fed from the first power bus 13a are referred to as high power equipment. First power bus 13
a is connected to the power supply 11 and the auxiliary power supply 12 via the switching mechanism 14 at the time of power failure and power recovery.

Reference numeral 13b denotes a second power supply bus, which is a circuit for detecting and notifying power failure and power recovery 15, control circuit 1, line control network 5, modem 6, non-volatile memory 18, CPU 2, RAM 4, R.
Power OM3. It is desirable to limit these mechanisms and circuits fed from the second power supply bus 13b to the minimum required for detection and notification of power failure, power recovery, and facsimile reception. The second power supply bus 13b is directly connected to the power supply 11 and the auxiliary power supply 12.

Reference numeral 15 denotes a circuit for detecting and notifying power failure and power recovery, which serves as a sensor for a power line, for example, AC 100V. The output enters the interrupt terminal of CPU2. The power failure and power recovery detection and notification circuit 15 is configured to generate a TTL level interrupt signal by using a conventional technique such as a pressure reducing transformer, a diode rectifier, and a semiconductor switching circuit.

The switching mechanism 14 at the time of power failure and power recovery is mainly composed of an electromagnetic relay. The current on the drive circuit side is taken from the power line through, for example, a pressure reducing transformer, a diode rectifier, etc., and the switching side has a power supply 11 and an auxiliary power supply 1
2 and the first power supply bus 13a are connected to each other so that the power supply 11, the auxiliary power supply 12 and the first power supply bus 13a are electrically connected to each other when the power line is energized, and are disconnected when a power failure occurs.

When the power line is energized, the switching mechanism 14 is turned on at the time of power failure and power recovery, so that the first power source bus 13a and the second power source bus 13b are both in the power feeding state. Therefore, the power source 11 supplies power to all the mechanisms and all circuits of the facsimile machine.

When the power line is cut off, the switching mechanism 14 at the time of power failure and power recovery includes a power source 11 and an auxiliary power source 12,
Since the first power supply bus 13a is disconnected, the auxiliary power supply 12 does not supply power to the high power equipment, and thus the auxiliary power supply 1
The consumption of 2 can be avoided.

On the other hand, the auxiliary power source 12 is the second power source bus 13b.
Since the power feeding to the facsimile machine is continued, the receiving function of the facsimile machine can be maintained even during the power failure.

The CPU 2 executes a power failure confirmation routine in response to an interrupt signal from the power failure / power recovery detection / notification circuit 15, and if the power failure can be confirmed, the subsequent received data is stored in the non-volatile memory 18. SR in the non-volatile memory 18
AM, EEPROM, battery backup DRA
M, flash memory, HDD, FD, writable optical disk, and magnetic tape recording device such as DAT can be used.

When the power line is restored, the switching mechanism 14 at the time of power failure and power restoration immediately becomes the power source 11 and the auxiliary power source 1.
2 and the first power supply bus 13a are electrically connected to each other, the power is supplied to the high power device, and the high power device restores its function.

The CPU 2 executes a power recovery confirmation routine in response to an interrupt signal from the power failure / power recovery detection and notification circuit 15. If the power recovery can be confirmed, subsequent storage of the received data in the nonvolatile memory 18 is stopped. . Then, the CPU 2 takes out the received data stored in the nonvolatile memory 18 during the power failure,
The print recording unit 7 prints out. This avoids dissipating received signals during a power outage.

FIG. 2 shows another embodiment using the switching circuit 16. In this case, the switching circuit 16 is C
The command from PU2 is received as a signal SG via the control circuit 1, and based on it, the power supply 11, the auxiliary power supply 12, and the first power supply bus 13a are electrically connected or disconnected.

[0020]

Since the present invention is configured as described above, it has the following effects.

At the time of a power failure, only the auxiliary power supply serves as a power supply source, but its storage capacity is limited. According to the invention,
The power interruption / recovery means saves power consumption during a power failure by interrupting the power supply to a high-power device such as a print recording unit during a power failure. Since the power saving function is provided as described above, it is possible to sufficiently cope with a long power failure. Further, since the storage means stores the incoming call at the time of power failure, it can be received even at the time of power failure. When the power is restored, the print recording unit can be immediately restarted, and the stored incoming call can be immediately printed out. This avoids dissipating received signals during a power outage.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an embodiment of a facsimile apparatus of the present invention.

FIG. 2 is a block diagram of another embodiment of the facsimile apparatus of the present invention.

FIG. 3 is a block diagram of a conventional facsimile apparatus.

[Explanation of symbols]

 1 Control Circuit 2 CPU 3 ROM 4 RAM 5 Line Control Network 6 Modem 7 Printing Recording Section 8 Reading Section 9 Image Processing Section 10 Key Input Section 11 Power Supply 12 Auxiliary Power Supply 13 Power Supply Bus 13a First Power Supply Bus 13b Second Power Supply Bus 14 Power Failure , Switching mechanism at power recovery 15 Power failure and power recovery detection and notification circuit 16 Switching circuit 18 Non-volatile memory AC power supply line

Claims (1)

[Claims] 1. A facsimile apparatus having a print recording unit and an auxiliary power supply at the time of a power failure, wherein the power supply to a high power device such as the print recording unit is shut off at the time of power failure, and the power is restored when the power is restored. Recovery means, storage means for storing the reception at the time of power failure, and the reception stored at the time of power recovery are taken out from the storage means,
A facsimile apparatus comprising: a control unit that causes the print recording unit to print and record.