JP3447606B2 - Facsimile machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine equipped with an accessory such as a cordless hand scanner.

[0002]

2. Description of the Related Art Measures against power failure in electronic equipment are important in terms of reliability (safety) of equipment. Some facsimile machines are also equipped with a rechargeable secondary power source (such as a secondary battery) as a backup power source for power failure.

[0003]

It is possible to mount a secondary power supply for coping with a power failure even in a popular type domestic facsimile machine, but in this case, the cost and space are increased. Such a problem occurs.

The popular type facsimile apparatus is an apparatus which is required to meet the strict market needs of low cost and space saving, and in view of this requirement, it may be difficult to mount a standby power supply as a measure against power failure. .

An object of the present invention is to improve the reliability of a facsimile machine by taking measures against power failure without increasing the burden on the cost and space.

[0006]

In the facsimile apparatus of the present invention, when a power failure occurs, an accessory device such as a cordless hand scanner quickly supplies a power supply voltage to the device body before the device body goes down. That is, the power source of the accessory device is used to operate the device main body, and thereby, it is possible to obtain the same effect as that of mounting the uninterruptible power supply on the device main body without newly providing a standby power source.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A facsimile apparatus according to a first aspect of the present invention comprises a device main body and an auxiliary device having a secondary power source built-in and removable from the device main body. , A power supply unit that supplies the voltage of the secondary power supply to the device body.

With this configuration, the voltage of the secondary power source of the accessory device can be used as the standby power source of the device body. Therefore, it is possible to secure a backup power source for the device main body without increasing costs.

The facsimile apparatus according to the second aspect of the present invention has a device body that does not have a standby power supply for coping with a power failure, and a power supply that the device body has when the device body is in a power failure state. And an accessory device that is removable from the device body and that operates as a backup power source.

By utilizing the existing capability of the auxiliary equipment, it is possible to substantially take measures against the power outage in the equipment body without having a special power supply for coping with the power outage.

A facsimile machine according to a third aspect of the present invention comprises a device main body having only a primary power source, and an accessory device having a secondary power source charged by the primary power source and removable from the device main body. The device detects the charging stop of the secondary power supply and detects that the device body is in a power failure state, and when the charging detection unit detects the power failure state of the device body, A power supply unit that supplies a voltage as a power supply voltage of the device body.

The auxiliary equipment receives the power supply from the main body of the equipment and charges the built-in secondary power supply. Therefore,
By monitoring the charging voltage (charging current), the accessory device itself can detect the power failure state of the device body without providing a special configuration. Utilizing this, the accessory can quickly detect the power outage of the device itself,
By supplying the power supply voltage promptly, it is possible to reliably prevent the equipment body from being down due to a power failure. Therefore, it is possible to take measures against power failure in the facsimile machine without preparing a special power source.

According to a fourth aspect of the present invention, in the facsimile apparatus according to the third aspect, when the charging detection unit detects a power failure, the secondary power source of the accessory device is used to cause a power failure of the apparatus body. The message is displayed on the main body of the device or the attached device.

As a result, the user can be notified of the occurrence of the power failure.

According to a fifth aspect of the present invention, in the facsimile apparatus according to the third aspect or the fourth aspect, when the device body is in a power failure state and is supplied with a power source voltage from a secondary power source, It has a control unit that suppresses power consumption by selectively limiting a portion that operates by the power supply voltage.

In the event of a power failure, the operable part of the device body is narrowed down, thereby suppressing the consumption of the secondary power source of the accessory device supplying the power source voltage.

According to a sixth aspect of the present invention, in the facsimile apparatus according to any one of the third to fifth aspects, the device body is in a power failure state and receives a power supply voltage from a secondary power supply. A reset unit is provided for initializing at least a part of the internal circuit of the device body when the supply of the power supply voltage is stopped during the operation.

With this configuration, even if the auxiliary power supply is suddenly cut off, for example, if the auxiliary power supply is removed while the secondary power supply is operating as the auxiliary power supply, the device is removed. It can be terminated after resetting the device body (especially memory) without abnormally terminating the body. Therefore, the next time the device body is started up, it can be started up normally.

According to a seventh aspect of the present invention, in the facsimile apparatus according to the third aspect, the device body is in a power failure state while the accessory device is removed from the device body, and then the accessory device is attached to the device body. The voltage of the secondary power supply of the attached device is supplied as the power supply voltage of the device itself,
As a result, when the device body is restarted and if the power outage is continuing, it is restarted in the operation mode that suppresses the power consumption by selectively limiting the part that operates by the supplied power voltage. It

Thus, when the accessory device is attached, the device body can be restored in the power saving mode corresponding to the power failure. This also enables the user to confirm that the device body is in a power failure state.

According to an eighth aspect of the present invention, in the facsimile apparatus according to any one of the third to seventh aspects, the charge detection unit in the accessory device operates by the voltage supplied from the primary power source of the device body. Current source circuit, a resistor for converting the output current of this current source circuit into a voltage, the voltage obtained from one end of this resistor and the voltage supplied from the primary power source of the equipment main unit are compared, and the A comparator that outputs a signal indicating a power failure state of the device body when the supplied voltage falls below a voltage obtained from one end of the resistor.

The current source circuit maintains the current capability for a while even if a power failure occurs, while the voltage of the primary power source sharply drops with the passage of time. Therefore, the output of the comparator is surely inverted before the power of the device body is shut down due to the power failure. Therefore, it becomes possible for the accessory device to detect the occurrence of a power failure before the system of the device body goes down and to quickly supply the power supply voltage to the device body.

In a ninth aspect of the present invention, in the facsimile apparatus according to any one of the first to eighth aspects, the secondary power source of the cordless hand scanner is used as a standby power source of the device body.

The cordless hand scanner necessarily incorporates its own power source (battery) in order to enable an independent operation separated from the main body of the device. Further, in a popular type facsimile machine, the cordless hand scanner is generally set in the device body and supplied with a voltage from the device body to charge the battery when the cordless hand scanner is not used. Focusing on these points, detection of a power failure state and switching supply of power supply voltage at the time of power failure are promptly performed,
This guarantees the operation of the device itself during a power failure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of the facsimile apparatus of the present embodiment for explaining the configuration of the facsimile apparatus according to the embodiment of the present invention.

The facsimile apparatus 101 includes a device body 10
2 and a cordless hand scanner 103 for reading the information of the original. The cordless hand scanner 103 is set in the device body when not used, and is detached from the device body 102 when used.

On the upper surface of the device body 102, an input unit 104 for dialing and a rotary switch input unit 10 are provided.
5, or input units 106 and 10 for making various inputs
7, 108 and 109 are provided.

Further, in the middle of the upper surface of the device main body 102, a display section 110 composed of a liquid crystal display for displaying the operation contents by the operator and various information is provided. Since the user can operate while looking at the display unit 110, erroneous operation can be prevented. The display unit 110 is a liquid crystal display in this example, but may be a CRT display.

Further, on the upper surface side portion of the device main body 102,
A handset 111 is provided. In this embodiment, the handset 111 is connected to the device body 102 with a cord, but a cordless type handset can also be used.

Furthermore, on the side surface of the device body 102,
An antenna 112 for transmitting radio waves is provided to a cordless cordless handset (hereinafter referred to as a cordless handset) (not shown), and various information can be transmitted from the device body 102 to the cordless handset.

A document table 113 for setting a document is provided at the rear of the device body 102.

On the other hand, on the upper surface of the cordless hand scanner 103, a reading section 114 for reading the information of the original is provided. The reading unit 114 illuminates an original with an LED (not shown) provided inside through a transparent plate such as glass. The light reflected on the original is photoelectrically converted by an internal photoelectric conversion unit (not shown), and an electric signal corresponding to the light intensity is output. As a result, the content of the document is read.

At the tip of the cordless hand scanner 103, there is a power LED 115.1 for indicating power ON / OFF.
16 are provided. In addition, LED115 and LED1
16 is an LED which emits a different color. Therefore, it is possible to easily determine whether the power is on or off.

Further, the cordless hand scanner 103
The device body 102 transmits and receives various information to and from the device body 102 via a series of terminals 117. Further, the cordless hand scanner 103 is supplied with a power supply voltage from the device body 102 via a series of terminals 117,
The power supply voltage is supplied to 2.

FIG. 2 is a block diagram of hardware for explaining the internal configuration of the facsimile apparatus according to the above embodiment.

The device main body 102 is provided with a main processing section 201. The main processing unit 201 includes a main control unit 202,
Input unit 203, display unit 110, line control unit 204, transmission / reception control unit 205, recording unit 206, RAM unit 207, ROM
Units 208 are provided and are connected to each other via a bus 209.

The main control unit 202 is, for example, a CPU (central processing unit) and the like, and executes a target process according to a program.

The input unit 203 includes the input unit 104 for dial input described in FIG. 1, the rotary switch input unit 105, and the input units 106 and 10 for various inputs.
7, 108, 109 and the like.

The line control unit 204 controls the transmission and reception of signals with the public line network. The line control unit 204 performs processing such as calling and receiving. The handset 111 and a built-in speaker (not shown) are connected to the line control unit 204.

The transmission / reception control unit 205 controls to transmit / receive radio waves to / from a child device or the like. Transmission / reception control unit 205
An antenna 112 is connected to.

The recording section 206 prints various data such as images and texts. The RAM unit 207 is the main control unit 20.
Reference numeral 2 is a main memory that reads and executes programs and data. The ROM unit 208 is a read-only memory that stores a basic program such as a boot program.

The primary power source section 210 rectifies and smoothes the commercial AC power source supplied from the outlet 211 and outputs it as a DC power source.

The power failure detecting section 212 monitors the voltage drop of the primary power source section 210 and detects whether or not there is a power failure. When the power failure detection unit 212 detects a power failure, the information is notified to the main control unit 202.

The power source switching section 213 switches whether to operate the secondary power source voltage supplied from the cordless hand scanner 103 as the power source of the facsimile apparatus 101. The power supply switching unit 213 includes the charging detection unit 21.
2 receives a signal indicating that the primary power is not supplied from the device body 102, the secondary power supply voltage supplied from the cordless hand scanner 103 is supplied to the main processing unit 201.
Supply to.

The reset unit 214 monitors the secondary power supply voltage supplied from the cordless hand scanner 103, and when it detects that the secondary power supply has dropped, it outputs a signal for initializing the device body 102 to the main control unit 202. Notify to.

The output terminal 215 is an output terminal for supplying the power supply voltage of the primary power supply unit 210 (voltage for charging the secondary power supply) to the cordless hand scanner 103. The input terminal 216 is used by the cordless hand scanner 10
3 is an input terminal for inputting a power supply voltage supplied from the device 3.

On the other hand, the cordless hand scanner 103 is also provided with a main processing section 217. Main processing unit 201
Includes a main control unit 218, a reading unit 114, a display unit 219,
A RAM section 220 and a ROM section 221 are provided, and each is connected to the bus 222.

The main control unit 217 is, for example, a CPU (central processing unit), and executes a target process according to a program.

The display unit 219 is the LED described in FIG.
115 and 116. In this example, LEDs 115,1
Although 16 is used, a liquid crystal display device or the like may be used instead.

The RAM section 220 is a main memory in which the main control section 218 reads and executes programs and data. The ROM unit 221 is a read-only memory that stores a basic program such as a boot program.

The secondary power source section 223 is a power source provided in the cordless hand scanner 103 and is composed of a rechargeable battery. The secondary power source unit 223 operates as a power source of the cordless hand scanner 103 when the cordless hand scanner 103 is detached from the device body 102. In addition, the secondary power supply unit 223 is provided in the device body 1
When the cordless hand scanner 103 is connected to 02, the cordless hand scanner 103 is charged by using the voltage supplied from the primary power supply unit 210 of the device body 102. Further, the secondary power supply unit 223 also operates as an auxiliary power source for the device body 102 when the device body 102 is in a power failure state.

The charge detection unit 224 detects whether or not the device body 102 is in a power failure state by detecting a decrease in the voltage of the primary power source supplied from the primary power supply unit 210 of the device body 102.

Here, in order to prevent overcharge, the device body 10
The charging from 2 may be stopped, but in this case,
It is decided to constantly apply a voltage that does not charge the device body 102, and whether the device body 102 is in a power outage,
In order to prevent overcharge, it is possible to distinguish whether the voltage has been dropped.

The content detected by the charge detection section 224 is notified to the main control section 218, the power supply section 225 and the power connection section 226 of the cordless hand scanner 103.

The power supply unit 225 switches whether to operate the secondary power supply voltage from the secondary power supply unit 223 as a standby power supply for the device body 102. Power supply unit 2
When the charging detection unit 224 detects a power failure state of the device body 102, the power supply unit 25 supplies the power supply voltage of the secondary power supply unit 223 to the device body 102.

The power supply connection section 226 supplies the primary power supply voltage supplied from the primary power supply section 210 of the device body 102 to the secondary power supply section 223. Charge detection unit 224
Detects a decrease in the primary power supply voltage supplied from the primary power supply unit 210 of the device body 102,
If the power is detected to be in a power failure state, the power supply connection unit 22
6 stops supplying the primary power supply voltage supplied from the primary power supply unit 210 of the device body 102 to the secondary power supply unit 223, and the secondary power supply voltage from the secondary power supply unit 223 is the primary power supply of the device body 102. It prevents backflow into the portion 210.

The output terminal 227 is an output terminal for supplying the power source voltage of the secondary power source section 223 to the device body 102. The input terminal 228 is an output terminal for inputting the power supply voltage supplied from the device body 102.

Next, the operation of the facsimile apparatus 101 will be described.

When the power supply of the device body 102 is cut off and a power failure occurs, the power failure detection unit 212 on the device body 102 side detects this and notifies the main control unit 202 and the power supply switching unit 213.

At this time, the main control unit 202 receives the information from the power failure detection unit 212 and causes the display unit 110 provided in the device main body 102 to display the fact that the power is in a power failure state.

When the power source of the device body 102 is turned off, the voltage of the primary power source unit 210 (that is, the charging voltage of the secondary power source) supplied from the device body 102 to the charge detection unit 224 on the cordless hand scanner 103 side is lowered. By detecting this, it is detected that the device body 102 is in a power failure state, and the detection signal is notified to the main control unit 218, the power supply unit 225, and the power supply connection unit 226.

Upon receiving this information, the power supply connection unit 226 stops supplying the primary power supply voltage supplied from the primary power supply unit 210 of the device body 102 to the secondary power supply unit 223, and at the same time, from the secondary power supply unit 223. The output secondary power supply voltage is prevented from flowing back to the primary power supply unit 210 of the device body 102.

When a power failure is detected, the power supply unit 225 supplies the secondary power supply voltage output from the secondary power supply unit 223 to the main processing unit 217 and also supplies the secondary power supply voltage to the device body 102. Supply the next power supply voltage.

On the device body 102 side, the power source switching unit 213
Receives the secondary power supply voltage from the secondary power supply unit 223. The power supply switching unit 213 uses the primary power supply unit 2 from the power failure detection unit 212.
Upon receiving the information that the voltage of 10 has dropped and a power failure has been detected, the secondary power supply voltage output from the secondary power supply unit 223 is supplied to the main processing unit 201.

At this time, in order to suppress the power consumption supplied from the secondary power source section 223 as much as possible, the main control section 202 controls the part supplying the power so that only the telephone function of the device body 102 is utilized.

Specifically, the line control unit 2 including a circuit for transmitting a DTML signal, a circuit for dial-in, etc.
Power is supplied to 04 so that operations such as recording, facsimile communication, and copying cannot be performed. Such a mode is called a power failure mode.

When the secondary power supply 223 switches from the charging operation to the voltage supplying operation, the main control unit 218 of the cordless hand scanner 103 causes the display unit 219 of the cordless hand scanner 103 to display that fact.

Specifically, the charging detection unit 224 detects that the device body 102 is in a power failure state by detecting a decrease in the primary power supply voltage supplied from the primary power supply unit 210, and the detected information is used as the main control. Notify the section 218. Upon receiving this information, the main control unit 218 sends the information to the display unit 219, and the display unit 219 displays according to this information.

As described above, according to the facsimile apparatus 101, the secondary power source section 223 provided in the cordless hand scanner 103 is provided even when the device body 102 is in a power failure state.
The device main body 102 can be driven by the secondary power source, and it is not necessary to newly provide the device main body 102 with the secondary power source. Therefore, the cost can be reduced.

Further, when the device main body 102 sets the cordless hand scanner 103 at the time of power failure, it is started in the power failure mode, so that the power consumption of the secondary power source section 223 can be minimized. Therefore, the voltage can be supplied from the secondary power supply unit 223 to the device body 102 for a long time. Therefore, even if the power failure state of the device main body 102 becomes long, the power supply from the secondary power supply unit 223 can be used. Further, since the device body 102 operates in the power failure mode, the user can confirm that the device body 102 is in the power failure state.

Further, the cordless hand scanner 103
Since the power failure state of the device body 102 is displayed on the display unit 219 of, the user can know that the device body 102 is in the power failure state.

Next, the operation when the cordless hand scanner 103 is detached from the device body 102 during a power failure will be described.

Since the cordless hand scanner 103 can be freely removed from the device body 102, even when the secondary power source section 223 of the cordless hand scanner 103 is operating as a standby power source for the device body 102 during a power failure,
It is likely to be removed by the user. Therefore, it may be assumed that the power is turned off while the main control unit 202 is writing to the storage unit such as the RAM unit 207. In such a case, unnecessary data may remain in the RAM unit 207 or the like, and an error may occur when the device body 102 is restarted.

Therefore, when the reset unit 214 on the apparatus main body 102 side detects a voltage drop from the cordless hand scanner 103, it sends a reset signal to the main control unit 202. The main control unit 202 receives the reset signal, and from the power failure detection unit 212 to the device body 1
When the signal 02 also indicates a power failure state, the device body 102 is reset.

Therefore, the cordless hand scanner 10
3 may be removed from the device body 102 at any time, the device body 102 may be reset and then terminated without abnormally terminating the device body 102. Therefore, the device body 102 can be normally started next time.

Next, the operation when the cordless hand scanner 103 is attached to the device body 102 at the time of power failure will be described.

In case of power failure, the cordless hand scanner 10
3 is attached to the device main body 102, the charge detection unit 22
4 detects that the device body 102 is in a power failure state and notifies the power supply unit 225 of the detected information. Upon receiving this information, the power supply unit 225 switches to supply the secondary power supply voltage from the secondary power supply unit 223 to the device body 102.

The device body 102 is restarted by the secondary power supply voltage of the secondary power supply section 223. The power failure detection unit 212 of the restarted device body 102 detects that the device body 102 has a power failure, and notifies the main control unit 202 of the detected information. The main control unit 202 receives this information and activates the device body 102 in the power failure mode.

As described above, by attaching the cordless hand scanner 103 to the device body 102 in the case of a power failure, the device body 102 can be operated. Furthermore, since the device main body 102 is started in the power failure mode, the secondary power supply unit 22
Power consumption of 3 can be minimized. Therefore, the voltage can be supplied from the secondary power supply unit 223 to the device body 102 for a long time. Therefore, even if the power failure state of the device main body 102 becomes long, the power supply from the secondary power supply unit 223 can be used. The user can also confirm that the device body 102 is in a power failure state.

FIG. 3 is a circuit diagram of the facsimile apparatus of the above embodiment for explaining the circuit configuration of the facsimile apparatus of the above embodiment. The same parts as those already described are designated by the same reference numerals.

The cordless hand scanner 103 includes an operational amplifier 301 and constant current source circuits 302 and 30 as shown in FIG.
3, the n-channel MOS transistor M1, the p-channel MOS transistor M2, the diodes D1 and D2, the resistors R1, R2 and R3, the secondary power supply unit 223, and the main processing unit 217.

On the other hand, the device main body 102 includes operational amplifiers 304 and 305 and a constant current source circuit 30 as shown in the figure.
6, 307, a p-channel MOS transistor M3,
Diodes D4, D5 and resistors R4, R5, R6, R
7, R8, R9, and a main processing unit 201. Further, the power supply voltage supplied from the cordless hand scanner 103 to the device body 102 is the terminal 227 and the terminal 22.
It is supplied via 8.

Next, the operation of the charge detector 224 will be described. The power supply voltage (voltage of the primary power supply) supplied from the device body side is input to the non-inverting terminal of the operational amplifier 301 (which constitutes a comparator). To the inverting terminal of the operational amplifier 301, the voltage corresponding to the voltage drop in the resistor R2 (determined by the output current of the constant current circuit 303 and the resistance value of the resistor R2) is input.

The output of the operational amplifier 301 becomes high level when the voltage of the non-inverting terminal is higher than the voltage of the inverting terminal, and when the voltage of the inverting terminal is higher than the voltage of the non-inverting terminal, its output. Becomes low level.

When a power failure occurs, the voltage at the non-inverting terminal of the operational amplifier is reduced by directly reflecting the decrease in the power supply voltage. On the other hand, as for the inverting terminal, the constant current circuit 303 maintains the current capability for a while after the occurrence of the power failure.
It can be said that the rate of voltage decrease with respect to time is slower than the voltage decrease of the primary power supply.

Therefore, before the voltage of the primary power source completely drops, the voltage relationship between the two inputs of the operational amplifier 301 is reversed and its output is inverted. Therefore, it becomes possible to detect the power failure state of the device body before the system of the device body goes down. Then, in response to the power failure detection signal, each part of the cordless hand scanner 103 operates quickly, and the voltage of the secondary power supply unit 223 is promptly supplied to the device body 102. This ensures the operation of the device body 102 during a power failure.

The voltage detection operation of the power failure detection unit 212 and the reset unit 214 is the same as the operation of the power supply detection unit 224.

FIG. 4 is a hardware block diagram of the cordless cordless handset according to the above embodiment, for explaining the cordless cordless handset according to the above embodiment.

Cordless cordless handset (hereinafter referred to as cordless handset) 40
1 is a control unit 402, a transmission / reception control unit 403, an input unit 40.
4, a display unit 405, a RAM unit 406, and a ROM unit 407, each of which is connected via a bus 408.

The control unit 402 is, for example, a CPU (central processing unit) or the like, and executes a target process according to a program.

The transmission / reception control unit 403 controls to transmit / receive radio waves to / from the device body 102. An antenna 409 is connected to the transmission / reception control unit 403.

The input unit 404 is an input unit for dial input and an input unit for various inputs.

The display section 405 is a section for displaying the usage status of the user. For example, a liquid crystal display device.

The RAM section 406 is a main memory in which the control section 402 reads and executes programs and data. The ROM unit 407 is a read-only memory that stores a basic program such as a boot program.

Next, the operation of the slave unit 401 when the device body 102 is in a power failure state will be described.

When the power outage detection unit 212 detects that the device body 102 is in a power outage state, the power supply switching unit 213 supplies the power of the secondary power supply unit 223 of the cordless hand scanner 103 to the main processing unit 201 of the device body 102. Switch to do.

At this time, when the main control unit 202 receives the information about the power failure from the power failure detection unit 212, the transmission / reception control unit 205 sends the power failure state of the device body 102 to the slave unit 401 via the antenna 112. A control signal to the effect that it has become.

Further, the main control unit 202 includes the power failure detection unit 21.
When the information indicating that the primary power supply unit 210 supplies the voltage, that is, the information indicating that the power failure state is released, is received from 2,
From the transmission / reception control unit 205 via the antenna 112, the slave unit 40
A control signal indicating that the device main body 102 is no longer in the power failure state is sent to 1.

Since the device main body 102 operates so as to suppress the power consumption as much as possible, the information indicating the power failure state is not continuously transmitted to the slave unit 401.

On the other hand, the slave unit 401 has the device body 10
The transmission / reception control unit 403 receives the control signal from No. 2 via the antenna 409. The transmission / reception control unit 403 that received this information
Notifies the control unit 402 of this information. Upon receiving this information, the control unit 402 analyzes the information signal and analyzes the information.
It is detected that 02 is in a power failure state.

The control unit 402 displays on the display unit 405 that the device body 102 has a power failure. This may be displayed on an LED or the like, or may be displayed on the display unit 405 by characters or images.

Further, the control unit 402 then determines whether the device main body 10
The display unit 405 displays that the device body 102 has a power failure until it receives a control signal indicating that the power supply is not in the power failure state.

As described above, when the device main body 102 is in the power failure state, the device main body 102 is transferred to the slave unit 401.
Informs that a power failure has occurred, so that the user can easily know that the device body 102 is in a power failure state even on the slave unit 401 side.

Further, even when the standby power supply of the device body 102 is cut off during the call and the call cannot be made, the user can easily know that the call cannot be made due to the breakdown of the device body 102 or the line.

Furthermore, since the device body 102 transmits the message to the slave unit 401 only when the device body 102 changes from a power failure state to a driving state or from a driving state to a power failure state, the device body 102 The power consumption can be suppressed as much as possible. In addition, the device main body 102 is
01 to send a signal to the display unit 4 on the handset 401 side.
In 05, the state of the device main body 102 can be displayed in real time.

In the above description, the case where the secondary power source of the cordless hand scanner is used as the standby power source of the device main body has been described, but the present invention is not limited to this, and the accessory devices such as a handy printer and a handset are used. A power supply can also be used.

Further, in the above-mentioned embodiment, the description has been made by using the facsimile machine. However, it is also possible to use the power supply of an electric equipment other than the facsimile machine, for example, a telephone, a personal computer or the like having an auxiliary equipment having a secondary power supply. Applicable.

Further, in the above description, the accessory device equipped with the secondary power source is described as being capable of being charged while being attached to the device body and being detached from the device body for use. It can also be applied to an accessory device in a form that can be used by connecting to the device body after charging with a dedicated charger other than.

Further, in the above description, the device main body has no secondary power source, but by providing the device main body with the secondary power source, the effect of the power failure countermeasure can be further enhanced. . In this case, since the accessory device is provided with the secondary power source, a sufficient effect can be obtained even if the secondary power source provided in the device body is small.

[0111]

As described above, according to the present invention, when a power failure occurs, the power source of the accessory device such as a cordless hand scanner is used to operate the device body, thereby increasing the cost and space burden. Without doing so, it is possible to add a power failure countermeasure function to the facsimile apparatus, and it is possible to obtain the effect that it is possible to easily realize high functionality (improvement in reliability) of the apparatus.

[Brief description of drawings]

FIG. 1 is a perspective view of a facsimile apparatus according to the present embodiment for explaining the configuration of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram of hardware for explaining an internal configuration of the facsimile apparatus according to the above embodiment.

FIG. 3 is a circuit diagram of the facsimile apparatus of the above embodiment for explaining the circuit configuration of the facsimile apparatus of the above embodiment.

FIG. 4 is a hardware block diagram of the cordless cordless handset according to the above-described embodiment for explaining the cordless cordless handset according to the above-described embodiment.

[Explanation of symbols]

101 Facsimile device 102 Device body 103 Cordless hand scanner 104, 105, 106, 107, 108, 109, 2
03,404 Input unit 110,219,405 Display unit 111 Handset 112,409 Antenna 114 Reading unit 115,116 LED 117,215,216,227,228 Terminal 201,217 Main processing unit 202,218 Main control unit 204 Line control Unit 205, 403 transmission / reception control unit 206 recording unit 207, 220, 406 RAM unit 208, 221, 407 ROM unit 209, 222, 408 bus 210 primary power supply unit 211 outlet 212 power failure detection unit 213 power supply switching unit 214 reset unit 223 secondary Power supply unit 224 Charge detection unit 225 Power supply unit 226 Power supply connection unit 401 Cordless slave unit (slave unit) 402 Control unit

Continued front page       (56) References JP-A-2-222357 (JP, A)                 JP-A-3-226811 (JP, A)                 Actual Kaihei 4-119158 (JP, U)

Claims (5)

(57) [Claims] 1. A device main body having a primary power supply for obtaining a DC power supply from a commercial AC power supply obtained through an outlet, and a secondary power supply detachable from the device main body and charged by the primary power supply. A facsimile device including a cordless hand scanner , wherein the cordless hand scanner charges the secondary power source.
By detecting the stop, the voltage of the primary power supply decreases
That the voltage of the primary power source
If it is detected that the voltage has dropped,
A power supply unit for supplying the power supply voltage of the device body,
The voltage of the secondary power supply supplied by the power supply unit is set to the device.
An output terminal for outputting to the main body of the device , wherein the main body of the device is the secondary power source output from the output terminal.
Input terminal for inputting the voltage of and the power supply from the primary power supply
Power to switch the supply from the input terminal to the secondary power supply.
A source switching unit and a facsimile device characterized by being provided.
Place 2. The cordless hand scanner comprises:
Supplied from the primary power source when the voltage of the primary power source drops
When the voltage supplied to the secondary power supply is stopped,
At the same time, the voltage of the secondary power source flows back to the primary power source.
A contractor characterized by being equipped with a power supply connection portion for preventing
The facsimile apparatus according to claim 1. 3. The device main body is provided with a voltage of the primary power source.
It has dropped and is receiving power supply voltage from the secondary power supply.
If the supply of the power supply voltage is stopped in
Reset that initializes at least a part of the internal circuit of the main unit
It has a part, Claim 1 or Claim 2 of Claim 2 characterized by the above-mentioned.
The facsimile apparatus according to any one of the above. 4. The cordless hand scanner is the machine.
The voltage of the primary power source when it is removed from the main unit
The cordless hand scanner
The cordless hand scanner attached to the main body
The power supply voltage of the secondary power supply of
When the device body is restarted by this,
If the voltage of the primary power source continues to drop,
Selectively limit the parts that operate by the supplied power voltage
Restart in an operation mode that suppresses power consumption.
4. The method according to any one of claims 1 to 3, characterized in that
Fax machine. 5. The charging detection unit is the charging device of the device body.
Current source circuit that operates by voltage supplied from primary power source
And for converting the output current of the current source circuit into a voltage
A resistor, a voltage obtained from one end of the resistor and the primary
Compared with the voltage supplied by the
The voltage supplied is below the voltage available at one end of the resistor
Indicates that the voltage of the primary power supply has dropped.
And a comparator for outputting a signal,
The facsimile apparatus according to any one of claims 1 to 4
Place