JP2002044310A - Facsimile terminal coping with power failure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facsimile terminal coping with power failure, which eliminates the need for an exclusive power failure circuit so as to save the space and reduce the cost. SOLUTION: The facsimile terminal coping with power failure is provided with a power supply section 4 that converts an AC voltage of an external power supply into a DC voltage and provides an output and with a secondary battery 14 and is configured such that the power of the secondary battery 14 drives circuits in the main body on the occurrence of power failure in the external power supply. Thus, the facsimile terminal coping with power failure eliminates the need for any exclusive power failure circuit to save the space and to reduce the cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power failure compatible facsimile apparatus which can be connected to a public line and can switch the power supply during a power failure.

[0002]

2. Description of the Related Art A facsimile apparatus is required to maintain a voice communication operation even when an external AC power supply (external AC power supply) such as a commercial power supply fails. That is, it is determined whether or not the external AC power input to the facsimile apparatus has failed. If it is determined that the external AC power has failed, the output DC of the power supply unit that receives the external AC power and supplies the power is determined. Instead of the voltage, the power of the public line is sent to a power outage communication circuit of another system, and the voice communication circuit is operated by the power of the public line.

[0003] A secondary battery is mounted in the facsimile apparatus main body, and when an external AC power supply fails, power is supplied to the image communication circuit (modem, memory circuit, etc.) from the secondary battery, so that the image is also restored when the power failure occurs. It is possible to enable communication.

[0004]

Conventionally, in order to enable voice communication even in the event of a power failure, a circuit dedicated to the measures against power failure is required, the number of components is increased, the complexity is increased, and the required space is increased due to an increase in the number of parts. However, there has been a problem that this leads to an increase in price and higher prices.

[0005] An object of the present invention is to provide a facsimile apparatus for power failure which can save space and reduce cost by eliminating the need for a dedicated power failure circuit to satisfy this demand.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, a facsimile apparatus for power failure according to the present invention has a power supply unit for converting an AC voltage of an external power supply into a DC voltage and outputting the same, and a secondary battery. When an external power supply is interrupted, the circuit in the main body is driven by the power of the secondary battery.

As a result, a facsimile machine corresponding to a power failure which does not require a dedicated power failure circuit and saves space and costs can be obtained.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A power failure compatible facsimile apparatus according to a first aspect of the present invention controls a secondary battery, a power supply section for converting an AC voltage of an external power supply into a DC voltage and outputting the DC voltage, and controls the entire apparatus. And a main body control circuit, which supplies a charging current from a power supply unit to the secondary battery, and is configured to operate by the power of the secondary battery when an external power supply is interrupted.

With this configuration, at the time of a power failure, the circuit of the main body can be operated by the power of the secondary battery.
The main body has an effect that a dedicated power failure circuit for using public line power is not required.

According to a second aspect of the present invention, the main body includes a power supply section for converting an external AC voltage into a DC voltage and outputting the DC voltage, and a main body control circuit for controlling the entire apparatus, and a cordless hand. The scanner controls the entire internal rechargeable battery and the cordless hand scanner supplied with charging current from the power supply unit to supply power to the cordless hand scanner, and determines whether or not there is a DC voltage output from the power supply unit via the main body control circuit. A scanner control circuit for detecting the absence of a DC voltage output.
The power of the secondary battery is controlled to be supplied to the main body.

With this configuration, the supply of the power of the internal secondary battery to the main body is controlled by the scanner control circuit, so that the conventional dedicated power failure circuit for utilizing the power of the public line becomes unnecessary. Have.

According to a third aspect of the present invention, there is provided the facsimile apparatus according to the first aspect, wherein the cordless hand scanner includes an external primary battery or an external secondary battery connected in parallel to the internal secondary battery. And an external battery connection connector for connection to the battery.

With this configuration, as long as an external primary battery or an external secondary battery is connected to the external battery connector,
Since the external primary battery or the external secondary battery is connected in parallel to the internal secondary battery, if the internal secondary battery is exhausted or the battery voltage of the internal secondary battery is insufficient, In addition, the power supply voltage is supplied from the external primary battery or the external secondary battery.

According to a fourth aspect of the present invention, there is provided the facsimile apparatus corresponding to the power failure according to the first aspect, wherein the main body inputs the output voltage of the power supply unit and supplies a charging current to the internal secondary battery. It has a secondary battery charging circuit.

With this configuration, when an external AC voltage (external AC voltage) is supplied, the DC output voltage from the power supply is supplied to the circuit in the main body, and the internal battery is charged by the secondary battery charging circuit. It has the effect that the next battery is charged.

According to a fifth aspect of the present invention, there is provided a facsimile apparatus compatible with a power failure according to the second aspect, wherein the main body inputs an output voltage of a power supply unit and supplies a charging current to an internal secondary battery. A secondary battery charging circuit is provided, and the scanner control circuit supplies the power of the internal secondary battery to the main body when it is determined that there is no DC voltage output from the power supply unit.

With this configuration, the internal secondary battery is charged when an external AC voltage (external AC voltage) is supplied, and when the external AC voltage is not supplied, the internal secondary battery is charged.
Since the power of the secondary battery is supplied to the main unit, the main unit is supplied with the DC output voltage from the power supply unit when the external AC voltage is supplied, and from the internal secondary battery when the external AC voltage is not supplied. Is provided.

According to a sixth aspect of the present invention, there is provided the facsimile apparatus according to the first or second aspect, wherein the main body includes a hook detecting circuit for detecting a hook state of the handset, and a bell signal from a public line. And a bell detection circuit for detecting the presence or absence of the power supply. When the scanner control circuit determines that there is no DC voltage output from the power supply unit,
The power of the secondary battery is supplied to the main body when an operation request is issued from the hook detection circuit and the bell detection circuit.

With this configuration, even when an external AC voltage is not supplied, power is supplied from the internal secondary battery to the main body when there is an operation request from both the hook detection circuit and the bell detection circuit. Therefore, there is an effect that the communication function is maintained with a small amount of power.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG.

(Embodiment 1) FIG. 1 is a block diagram showing a power failure handling facsimile apparatus according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 1 denotes a power failure compatible facsimile apparatus, 2 denotes a main body constituting the power failure compatible facsimile apparatus 1, 3 denotes a power failure compatible facsimile apparatus 1 and a cordless hand scanner which can be detached from the main body 2; A power supply unit that converts an external AC power supply (external AC power supply) into DC and supplies power to the entire power failure facsimile machine 1, 5 is a main body control circuit that controls the entire apparatus, and 6 is a public line 1 described later.
A bell detection circuit for detecting an incoming call from 3; a printing unit 7 for printing out facsimile data and image data read by the cordless hand scanner 3; a memory 8 for storing image data, voice data, and work data; And 10, a hook detection circuit for detecting the state of the receiver 9;
Reference numeral 11 denotes a secondary battery charging circuit for charging an internal secondary battery 14, which will be described later. Reference numeral 12 denotes an operation unit including dial buttons and various operation buttons. Reference numeral 14 denotes a public line connected to the main body 1.
4 is an internal secondary battery serving as a power supply when the cordless hand scanner 3 is detached from the main body 2 and used alone.
Reference numeral 15 denotes a stable power supply generating circuit that inputs a power supply voltage of the internal secondary battery 14 and outputs a stable power supply voltage, 16 denotes a scanner control circuit that controls the entire cordless hand scanner 3,
Reference numeral 17 denotes a power failure control circuit for controlling power supply to the main body 2 in the event of a power failure. Reference numeral 18 denotes an external power supply for connecting a battery pack 23 equipped with an external battery (external secondary battery or external primary battery) 22. A battery connection connector, 19 is a buzzer for notifying the status, 20 is an operation unit for performing each user setting, and 21 is an image reading unit for reading an image from printing paper or the like. In the facsimile machine 1 corresponding to a power failure, communication with the outside can be performed by connecting the bell detection circuit 6 to the public line 13.

The operation of the thus configured facsimile machine 1 corresponding to a power failure will be described with reference to FIGS. FIG. 2 is a flowchart showing the operation of the main body control circuit 5, and FIG. 3 is a flowchart showing the operation of the scanner control circuit 16.

First, the operation of the main body control circuit 5 of the facsimile machine 1 corresponding to a power failure will be described with reference to FIG.

When an external AC power supply is connected to the power failure compatible facsimile machine 1, the power supply unit 4 converts the external AC power supply voltage into a DC voltage, and converts the generated DC voltage into the main body 1 (directly with the main body control circuit 5). The power is supplied to the secondary battery charging circuit 11) and the cordless hand scanner 3, whereby the main body control circuit 5 performs an initial operation (S1), and determines whether or not the internal secondary battery 14 is connected to the cordless hand scanner. The determination is made based on the notification from the control circuit 17 (S2). The main body control circuit 5 starts charging by the secondary battery charging circuit 11 when it determines that the internal secondary battery 14 is connected (S3), and stops charging when it determines that it is not connected. (S4). Next, the main body control circuit 5 monitors the state (S5). That is, the states of the bell detection circuit 6, hook detection circuit 10, operation unit 12, and cordless hand scanner 3 are monitored, and when an operation request is issued (S6), processing according to the request is executed (S7).

Next, the operation of the scanner control circuit 16 will be described with reference to FIG.
This will be described with reference to FIG.

First, when a DC voltage is supplied from the internal secondary battery 14 to the cordless hand scanner 3, the scanner control circuit 16 performs an initial operation (S11).
Is determined (S12), whether the internal secondary battery 14 is connected (S13), or whether a DC voltage is supplied from the main body 2 (that is, whether the external AC power supply is not in a power failure state). If it is determined in step S12 that the battery is not connected to the main body, or if it is determined in step S13 that the internal secondary battery 14 is not connected, or if it is determined in step S14 that no DC voltage is supplied from the main body 2, The scanner control circuit 16 receives the instruction from the main body control circuit 5 and the cordless hand scanner 3
, The state of the operation unit 20, and the power supply unit 4 of the main body 2.
(S15), and when an operation request occurs or a state change occurs (S16), a process corresponding to them is executed (S17).

The case where it is determined in step S14 that the DC voltage is not supplied from the main body 2 (that is, in the case of a power failure state in which the supply of power from the outside is stopped) will be described.
When the supply of AC power from the outside stops, the DC voltage output of the power supply unit 4 stops, and the function of the main body 2 stops. However, the cordless hand scanner 3 has an internal secondary battery 14.
Is connected, and even if the supply of the DC voltage from the main body 2 is stopped, the operation can be performed without stopping the function. The scanner control circuit 16 monitors the output state of the power supply unit 4 while being connected to the main body 2, and when the DC voltage output of the power supply unit 4 is stopped, determines that the power supply is in a power failure state and proceeds to the power failure processing. Transition. As can be seen from the prerequisites for this power failure process, as can be seen from steps S12 to S14, the cordless hand scanner 3 is connected to the main body 2, the internal secondary battery 14 is connected, and no DC voltage is supplied from the main body.

Scanner control circuit 16 shifted to power failure processing
Determines the consumption state of the internal secondary battery 14 (S1
8). If it is determined that it is worn out, the buzzer 19 is activated if the estimated operating time is shorter than the set specified time, and a warning is issued to the user (S19). The user who has received the warning can recognize that the operation time is running short. Further, the user can extend the operation time by connecting the external secondary battery 22 or the battery pack 23 equipped with the external primary battery 22 to the external battery connection connector 18 of the cordless hand scanner 3.

If it is determined in step S18 that the internal secondary battery 14 has not been exhausted, the state of the bell detection circuit 6 and the state of the hook detection circuit 17 are monitored (S20). When there is an incoming call from the public line 13, the state of the bell detecting circuit 6 changes, and the incoming call is detected by the scanner control circuit 16 (S21). The scanner control circuit 16 that has detected the incoming call from the outside issues an instruction to the power failure control circuit 17 and starts power supply to the main body 2 (S22). The activated main body control circuit 5 executes the processing according to the request, and when the processing is completed, notifies the scanner control circuit 16 of the end of the processing (S23). Scanner control circuit 16 that has received the processing end
Issues an instruction to the power failure control circuit 17, stops the power supply to the main body 2 (S24), and shifts to the state monitoring of the power failure processing.
That is, the process proceeds to step S12.

In step S21, it is also determined that there is an operation request when the receiver 9 is lifted (off-hook). That is, when the receiver 9 is lifted, the state of the hook detection circuit 10 changes, and the scanner control circuit 16 detects a call request. Upon detecting the call request, the scanner control circuit 16 issues an instruction to the power failure control circuit 17 to start power supply to the main body 2 (S22), and the activated main body control circuit 5 executes processing according to the request,
When the processing is completed, the processing completion is notified to the scanner control circuit 16 (S23). Upon receiving the processing end, the scanner control circuit 16 issues an instruction to the power failure control circuit 17, stops the power supply to the main body 2 (S24), and shifts to the state monitoring of the power failure processing.

In the power failure processing state, when AC power is supplied from the outside, the main body control circuit 5 executes an initial operation (S1) and shifts to a standby state for normal operation (S2).
~ S5).

As described above, according to the present embodiment, by using the internal secondary battery 14 mounted as another function as a power source at the time of a power failure, a dedicated power failure circuit for utilizing public line power is provided. Power failure can be handled without mounting. Further, a facsimile function that has been impossible in the past can be realized. Further, by connecting the external secondary battery 22 or the battery pack 23 on which the external primary battery 22 is mounted, continuous operation can be performed when necessary.

[0034]

As described above, according to the facsimile apparatus for power failure according to the first aspect of the present invention, a secondary battery, a power supply unit for converting an AC voltage of an external power supply into a DC voltage and outputting the DC voltage, A main body control circuit for controlling the entire apparatus,
By supplying a charging current from the power supply unit to the secondary battery, and operating by the power of the secondary battery when the external power source fails, it is possible to operate with the power of the internal secondary battery at the time of the power failure, Since the conventional dedicated power failure circuit for using the power of the public line at the time of the power failure can be dispensed with, the advantageous effect that the space and the price of the device can be reduced can be achieved.

According to a second aspect of the present invention, there is provided a power failure compatible facsimile apparatus comprising: a main body connected to a public line for printing a received image; and a cordless hand scanner for reading an image and outputting the image to the main body. The cordless hand scanner has a power supply unit that converts an AC voltage into a DC voltage and outputs the DC voltage, and a main body control circuit that controls the entire device. The cordless hand scanner receives a charging current from the power supply unit and supplies power to the cordless hand scanner. It has a secondary battery and a scanner control circuit that controls the entire cordless hand scanner and detects the presence / absence of a DC voltage output from a power supply unit via a main body control circuit. A power failure-responsive facsimile apparatus, which controls to supply the power of the internal secondary battery to the main body upon detection.

The facsimile apparatus for power failure according to claim 3 is the facsimile apparatus for power failure according to claim 2, wherein the cordless hand scanner includes an external primary battery or an external secondary battery connected in parallel to an internal secondary battery. By having an external battery connection connector for connection, as long as an external primary battery or an external secondary battery is connected to the external battery connection connector, an external primary battery or an external secondary battery is used for the internal secondary battery. Are connected in parallel,
When the internal secondary battery is exhausted or when the battery voltage of the internal secondary battery is insufficient, the power supply voltage can be supplied from the external primary battery or the external secondary battery. The advantageous effect that it becomes possible is obtained.

According to the facsimile apparatus for power failure according to claim 5, in the facsimile apparatus for power failure according to claim 2, the main body inputs the output voltage of the power supply unit and supplies the charging current to the internal secondary battery. When the scanner control circuit determines that there is no DC voltage output from the power supply unit, the scanner control circuit supplies the power of the internal secondary battery to the main body only when necessary, so that the When the AC voltage (external AC voltage) is supplied, the internal secondary battery is charged, and when the external AC voltage is not supplied, the power of the internal secondary battery is supplied to the main body. When the external AC voltage is supplied, the DC output voltage is supplied from the power supply unit. When the external AC voltage is not supplied, it is possible to receive the power supply from the internal secondary battery. Heel Advantageous effect that it becomes possible to supply a power supply voltage to Razz body is obtained.

According to the facsimile apparatus for power failure according to claim 6, in the facsimile apparatus for power failure according to claim 1 or 2, the main body comprises: a hook detection circuit for detecting a hook state of the handset; And a bell detection circuit that detects the presence or absence of a bell signal. When the scanner control circuit determines that there is no DC voltage output from the power supply unit, the scanner control circuit outputs the power of the internal secondary battery from the hook detection circuit and the bell detection circuit. When the operation request is received from both the hook detection circuit and the bell detection circuit even when the external AC voltage is not supplied, the internal secondary Since power is supplied from the battery to the main body, an advantageous effect that the call function can be maintained with a small amount of power is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a power failure handling facsimile apparatus according to a first embodiment of the present invention;

FIG. 2 is a flowchart showing an operation of a main body control circuit;

FIG. 3 is a flowchart showing the operation of the scanner control circuit;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Facsimile apparatus 2 Main body 3 Cordless hand scanner 4 Power supply unit 5 Main body control circuit 6 Bell detection circuit 7 Printing unit 8 Memory 9 Handset 10 Hook detection circuit 11 Secondary battery charging circuit 12, 20 Operation unit 13 Public line 14 Internal secondary battery Reference Signs List 15 stable power generation circuit 16 scanner control circuit 17 power failure control circuit 18 external battery connection connector 19 buzzer 21 image reading unit 22 external battery (external secondary battery or external primary battery) 23 battery pack

Claims (6)

[Claims] A power supply section for converting an AC voltage of an external power supply into a DC voltage and outputting the DC voltage; and a main body control circuit for controlling the entire apparatus. A facsimile machine adapted for power failure, wherein a charging current is supplied, and the power is supplied from the secondary battery when the external power supply fails. 2. A power failure compatible facsimile apparatus comprising: a main body connected to a public line for printing a received image; and a cordless hand scanner for reading an image and outputting the read image to the main body. And a main unit control circuit for controlling the entire apparatus.The cordless hand scanner is supplied with a charging current from the power supply unit and supplies power to the cordless hand scanner. An internal secondary battery, and a scanner control circuit that controls the entire cordless hand scanner and detects the presence or absence of a DC voltage output from the power supply unit through the main body control circuit. When no voltage output is detected, the power of the internal secondary battery is controlled to be supplied to the main body. Akushimiri apparatus. 3. The cordless hand scanner according to claim 1, further comprising:
The facsimile apparatus according to claim 1, further comprising an external battery connection connector for connecting a secondary battery or an external secondary battery to the internal secondary battery in parallel. 4. The facsimile apparatus according to claim 1, wherein said main body includes a secondary battery charging circuit for inputting an output voltage of a power supply unit and supplying a charging current to an internal secondary battery. 5. The scanner according to claim 1, wherein the main body includes a secondary battery charging circuit that inputs an output voltage of the power supply unit and supplies a charging current to the internal secondary battery. If it is determined that there is no DC voltage output,
3. The facsimile apparatus according to claim 1, wherein the power of the secondary battery is supplied to the main body only when necessary. 6. The main body has a hook detection circuit for detecting a hook state of a receiver, and a bell detection circuit for detecting the presence or absence of a bell signal from a public line, and the scanner control circuit is provided from the power supply unit. When it is determined that there is no DC voltage output, the power of the internal secondary battery is supplied to the main body when there is an operation request from the hook detection circuit and the bell detection circuit. 3. The facsimile machine according to 1 or 2, which is compatible with a power failure.