JP3461206B2 - 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.

[0002]

2. Description of the Related Art Conventionally, in a device having a standby state such as a facsimile device, a switching power supply or the like is used as its power source, and it is used for irregular reception except when it is used only for the purpose of transmitting an original. In order to respond, it was necessary to always supply power to the device and keep it in operation. For this reason, the primary side of the main power supply is also directly controlled by a calling signal from a telephone line, etc., and power saving is achieved. In addition to the main power supply, there are also devices that have a sub power supply for standby separately.This type operates only with the standby sub power supply, and the main power supply starts up only during operation. Power consumption is being reduced.

Furthermore, a completely new system has also been proposed for the purpose of reducing power consumption during standby (Japanese Patent Application No. 5-101108). In this system, the second control unit controls the start and stop of the main power supply (switching power supply), and the power supply to this second control unit is performed by the secondary battery during standby and by the main power supply during operation. It is a structure. A system in which the main power supply is stopped during standby and only the second control unit operates, and during operation, the main power supply operates while the control signal from the second control unit is being supplied to the main power supply. Is. As a result, it is possible to further reduce power consumption as compared with the conventional case.

[0004]

However, in the latter newly proposed system of the above conventional example, in addition to charging the secondary battery as conditions for starting the main power source, detection of a calling signal and key input However, the following problems were encountered. DRPD (Distinguishing Ringing)
Even for those receiving the Pattern Detect service, the main power is turned on regardless of the type of the call signal. Even if it is not necessary to start the main system, such as when the reception mode of the device is changed, key input unconditionally turns on the main power supply, and the time required for initialization of the device is kept waiting.

[0005]

According to the present invention, the main power source for controlling the operation from the outside, the second control section for performing this control, and the electric power for the second control section are provided. It is composed of a secondary battery or solar battery to be supplied, and when a key input or a call signal is detected, the main system is not started unconditionally, but the main power supply and the first By activating the control part of
The power consumption during standby is reduced as much as possible and the operability is improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 is a drawing best showing the features of the present invention. In FIG. 1, the facsimile apparatus is composed of two systems, a first system and a second system.

First, the second system will be described. 1 is a control unit in the second system, which is a program,
Also, it is composed of a one-chip microcomputer having a built-in ROM and RAM for reading and writing various variables and constants, a capacitor type secondary battery, etc., and can be driven only by the power supplied from this secondary battery. Reference numeral 2 is a call signal detection means, which detects a call signal coming through the communication unit 14 and sends the output to the second control unit 1. Reference numeral 3 denotes a document detection unit, and a document setting state indicates a mechanical document sensor (included in 3) provided on a document conveyance path.
The original detection signal is input to the second controller 1. Here, the reason why the mechanical original sensor (mechanical switch) is used instead of using the photo interrupter using the light emitting element as the original sensor is that power is not consumed during standby for inserting the original. When a photo interrupter using a light emitting element is used, the average power consumption can be reduced if the photo interrupter is not monitored at all times but at regular intervals. An operation unit 4 includes keys for starting image transmission and reception, a mode selection key for designating operation modes such as fine, standard, and automatic reception at the time of transmission and reception, and a numeric keypad for dialing and a one-touch key. ing. When any of these keys is pressed, information about the key press is input to the second control unit 1, and it is determined whether or not it is the activation factor. If it is the activation factor, the main power supply is activated. Reference numeral 5 denotes a communication unit with the first control unit, which transmits and receives various information and also includes a start signal from the second control unit to the first control unit. 6 is a display part, and 7 for clock display
An LCD module that combines a pictogram LCD that displays a segment and various modes and a dot matrix LCD,
The pictogram LCD and the dot matrix LCD are independent of each other. Reference numeral 7 denotes various state detecting units, which have a recording sheet presence / absence, a cartridge presence / absence, ink and toner remaining amount detecting means, a hook detecting means of a receiver, and the like. Reference numeral 8 denotes an AC input switching power supply, which can control ON / OFF of switching from the outside, and controls power supply by a start signal and a stop signal from the second controller 1. Reference numeral 9 is a time measuring unit, which is the first
It is a means for comparing and managing the time information sent from the system and the designated time.

Next, the first system will be described. 10
Is a control unit in the first system, and according to the program recorded in the ROM of 15, a reading unit of 11, a recording unit of 12, a communication unit of 13 with the second system, a communication unit of 14 for controlling facsimile communication, And 16 codes for decoding and controlling the image, the decoding unit, and
Based on these states, it is determined whether the main power supply may be turned off, and if it is good, the second control unit is notified of the main power supply off permission. Reference numeral 11 denotes a DMA controller, an image processing IC, an image sensor, a CMOS logic IC, etc.
Based on the control of 0, the data read using a reading device such as a contact sensor (CS) is binarized, and the binarized data is sequentially sent to the RAM 17. Reference numeral 12 denotes a DMA controller, a recording device such as an ink jet system or a laser beam system, a CMOS logic IC, and the like. Under the control of 10, the recording data stored in the RAM is taken out and recorded and output as a hard copy. Reference numeral 13 denotes a communication unit with the second control unit, which transmits and receives various kinds of information, and also includes a start signal from the second control unit to the first control unit, and the first system operates in accordance with the start signal. To start. A communication unit 14 is composed of G3 and G2 modems and a clock generation circuit connected to these modems, and is a RAM under the control of the first control unit 10.
The transmission data stored in 17 is modulated, and the communication unit 14
To send via. Also, input an analog signal during reception,
The binarized data obtained by modulating the signal is stored in the RAM 17. Reference numeral 17 denotes a RAM module composed of two types, a volatile type and a non-volatile type. The volatile RAM is a binarized image data read by the reading section 11 and a recording section 1.
Binarized image data recorded in 2 or the communication unit 14
The binarized image data demodulated by and encoded by the encoding / decoding unit 16 is stored. In addition, the non-volatile RAM stores data to be saved (for example, a one-touch number or a telephone number registered in the speed dial) even when the power of the device is cut off.

FIG. 2 is a circuit diagram showing a simplified configuration of the second control unit 1 and its peripheral configuration, FIG. 3 is a circuit diagram showing a simplified configuration of the main power source controlled by the second control unit 1, and FIG. Call signal detection circuit 2, part of various state detection circuits 7 and first control unit 1
It is a circuit diagram which shows the simplified structure of 0 periphery. In these drawings, Vcc connects three systems of power supply sources via the DC-DC converter 23 (FIG. 2), one is +5 V from the main power source, the second is the solar cell 26, and the third is The capacitor-type secondary battery 30. The priority of these three power supplies is determined by the respective voltages, the state of charge of 30, the backflow prevention Schottky barrier diode 27 and the backflow prevention diode 28, and those from the main power supply are determined by the Schottky barrier diode 27. .8V, solar cell 2
The one from 6 depends on the diode 28 to 4.6V, and the one from the secondary battery 30 depends on its charge state. Further, depending on the orientations of the Schottky barrier diode 27 and the diode 28, the power supply becomes the most dominant when the main power source is rising, and the secondary battery 30 is charged through the resistor 29 and is also converted to Vcc through the DC-DC converter 23. Supply power. At this time, the solar cell 26 has a low potential, and no current flows from the solar cell 26. When the main power source is not operating and the solar cell 26 is supplying electric power, that is, when the main power source is not operating but light energy is being supplied, the secondary battery 30 has a higher potential than the solar cell 26. If is high, electric power is supplied from the secondary battery 30 to Vcc via the DC-DC converter 23, and no electric power is supplied from the solar cell 26. When the electric potential of the secondary battery 30 is lower than that of the solar battery 26, electric power is supplied from the solar battery 26 to Vcc via the DC-DC converter 23, and at the same time, the secondary battery 30 is also charged through the resistor 29. When the main power supply is not operating and the solar cell 26 is not supplying electric power, the secondary battery 30 receives Vcc via the DC-DC converter 23.
Supply power to.

In FIG. 2, reference numeral 20 denotes a microcomputer which can operate with low power consumption and has a timer means for a clock built therein. The microcomputer 20 can exchange data with the first controller 10 through the serial interface sI / O. Whether or not the solar cell 26 is supplying power is detected by detecting the voltage with the voltage detection circuit 21, and when the voltage is higher than 2.5V, OUT of the voltage detection circuit 21 becomes High level and 2.5V.
In the following cases, OUT of the voltage detection circuit 21 becomes Low level. The output from OUT of the voltage detection circuit 21 is input to IN8 of the microcomputer 20. The voltage of the secondary battery 30 in the discharged state is detected by the voltage detection circuit 25, and when the voltage is higher than 1.2 V, OUT of the voltage detection circuit 25 becomes H.
When the voltage is 1.2V or less, OUT of the voltage detection circuit 25 becomes Low level. Voltage detection circuit 25
The output from OUT is input to IN9 of the microcomputer 20. The voltage of the fully charged state of the secondary battery 30 is the voltage detection circuit 2
2 is detected, and when the voltage is higher than 4.8V, OUT of the voltage detection circuit 22 becomes High level,
When the voltage is 4.8V or less, OUT of the voltage detection circuit 22 is Low.
It becomes a level. The output from OUT of the voltage detection circuit 22 is input to IN13 of the microcomputer 20. 23 is DC-D
The C converter operates as a series regulator when the input voltage is higher than the output voltage, and operates as a step-up switching regulator + series regulator when the input voltage is lower than the output voltage. The output voltage can be selected from 5V and 3V, and when the input port SEL is at the high level, the output voltage is 5V.
When V is Low level, 3V is output respectively.
The input Vin of the DC-DC converter 23 is 0.9V.
In the above case, 5V or 3V is always output from the output Vout. Reference numeral 24 is a voltage detection circuit for resetting the microcomputer 20, and its output RE is RESE of the microcomputer 20.
Input to T. Vout of the DC-DC converter 23
When the voltage of is less than 2.7V, RE of the voltage detection circuit 24 is at Low level, and when it is more than 2.7V, the time required for resetting the microcomputer 20 is delayed to maintain the Low level and the microcomputer 20 is reset. , Then H
It becomes the high level. Reference numeral 18 denotes the LCD module described above, which is controlled by the microcomputer 20. Reference numeral 19 denotes a key matrix circuit that scans various keys (identifies the pressed key), and can identify the pressed key by software control of the microcomputer 20. The key matrix circuit 19 is also equipped with a mechanical original detection switch (or reed switch) provided in the original conveyance path. Here, the reason why the mechanical document detection switch is used without using a photo interrupter using a light emitting element for the document sensor is that power is not consumed during the document insertion standby. This can prevent the secondary battery 30 from being consumed.

In FIG. 3, the AC input is the filter circuit 3
It is supplied to the primary and secondary isolation transformers through the rectifier circuit 32, the smoothing circuit 33, and is switched by the FET 41. Here, 34 is a primary winding, and 36 is a secondary winding. 42 is an IC that controls the oscillation of the primary side of the transformer
And its power supply Vdd is provided by the auxiliary winding 35 wound in the transformer. The secondary side of the transformer is 36
From + 24V, +5 via rectifying / smoothing circuits 37, 38
The power of V is supplied to each part of the first system and the second system. Reference numeral 39 is a current detection circuit, and 40 is an overvoltage detection circuit, which feeds back these outputs to the IC 42 through photocouplers 43 and 44, respectively. Further, the IC 42 performs PWM control by the current on the secondary side, and shuts down the entire system when an overvoltage is detected. The PS signal, which is a signal peculiar to this embodiment, is input to the IC 42 through the photocoupler 45. When the PS signal is at the high level, the transistor 46 is turned on and a current flows through the photocoupler 45. After conversion, the input port IN1 of the IC42 goes low, and in response to this, the output port OUT of the IC42
1 oscillates, the primary side oscillates through the FET 41 to supply power to the secondary side, and the main power supply rises to operate. P
When the S signal is low level, the transistor 46 is off
Then, the IN1 of the IC 42 becomes High level, the output port OUT1 of the IC 42 becomes Low level in response to this, the FET 41 is turned OFF, the oscillation of the primary side is stopped, and the main power supply stops operating. For example, when the hooking switch is pressed during standby, an ON signal is output from the key matrix circuit 19, the microcomputer 20 recognizes the pressing of the key matrix circuit 19, and OUT1 is set to High.
The main power supply is activated with the h level, that is, the PS signal at the high level, and the information is sent to the first control unit 10 through the serial interface sI / O.
0 controls the communication unit 14 to enter the off-hook state. Four
Reference numerals 7, 48, 49, 50 and 51 are current limiting resistors. The photocoupler 45 also insulates the primary side and the secondary side.

In FIG. 4, reference numeral 52 denotes a voltage detection circuit for resetting the first control section 10, the output RE of which is the first
Input to RESET of the control unit 10. + From the main power supply
When the voltage of 5V is 4.5V or less, the RE of 52 is at the low level, and when it becomes higher than 4.5V, the first control unit 10
The first control unit 10 is reset by delaying the time required for resetting to maintain the low level, and then
It becomes the h level. The output from RE is the microcomputer 20.
IN10 is also input and monitored. Reference numeral 61 is a photocoupler for detecting a calling signal (CI signal),
When a call signal arrives via the communication unit 14, an incoming signal (Lo
w level) is input to IN12 of the microcomputer 20. When a ringing signal arrives during standby, an incoming signal (Low level) is input to the microcomputer 20, and the microcomputer 20 determines whether it matches the ringing signal cadence (on / off pattern) designated by the first controller 10 in advance. To do. If they match, OUT1 is set to the high level, that is, the PS signal is set to the high level to start the main power supply, and the information is sent to the first control unit 10 through the serial interface sI / O, and the first control unit 10 responds to each block accordingly. Control. Reference numeral 60 is a photocoupler for detecting the off-hook of the handset, and when it is off-hook, the Low level is input to IN11 of the microcomputer 20. When the handset is off-hook during standby, the Low level is input to the microcomputer 20, and the microcomputer 20 recognizes it and activates the main power source by setting OUT1 to the High level, that is, the PS signal to the High level, and outputs the signal through the serial interface sI / O. The information is sent to the first control unit 10, and the first control unit 10 controls each block accordingly. Reference numerals 62 and 63 are resistors for limiting current, and 54 and 55 are modular jacks.

FIG. 5 shows DRPD (Distinguishing).
The cadence of a calling signal transmitted to a line that has received the Ringing Pattern Detect service, and telephone calling, facsimile calling, etc. correspond to each cadence.

FIG. 6, FIG. 7, FIG. 8, FIG. 9, FIG.
Is a flowchart showing the operation of the present embodiment, and the operation will be described with reference to these drawings.

FIG. 6 is an operation flow in the FAX standby state. In the figure, when the AC input is started, the main power source first rises (step S1) to initialize the microcomputer 20 (step S2) and the first control unit 10 (step S3), and at the same time, the secondary battery 30. Starts charging (step S4). When the initialization of the microcomputer 20 is completed, the FAX goes into a standby state. The secondary battery 30 is continuously charged while the standby state continues. When charging is completed (step S5), that is, when the output of the voltage detection circuit 22 becomes High level, or when the microcomputer 2
When a predetermined time elapses with a timer built in 0, in the former case, IN13 of the microcomputer 20 becomes High level, and accordingly, the microcomputer 20 sets OUT5, that is, the PS signal to Low level to stop the operation of the main power source ( Step S7), and accordingly R of the voltage detection circuit 52
E becomes Low level and the first control unit 10 is reset. In the latter case, an interrupt occurs, and accordingly, the microcomputer 20 sets OUT5, that is, the PS signal to the Low level to stop the operation of the main power supply (step S7).
Along with that, RE of the voltage detection circuit 52 becomes Low level, and the first control unit 10 is reset. Further, if there is no permission to turn off the main power source according to an instruction from the first control unit 10, the main power source is not turned off in any of the above cases. When the main power is turned off, the secondary battery 30 and the solar battery 2
The power supply by only 6 is started, but in any case, the secondary battery 30 is also charged by the surplus power of the power supplied by the solar cell 26. After that, various states are monitored until the main power source activation factor occurs (step S8).
Main power activation factors include charging request, call signal detection,
Key input, document detection, device status change detection, timer processing activation, etc.

FIG. 7 is an operation flow of the state monitoring process in FIG. 6, in which various main power supply start conditions (step S10
Up to step S15) and data reception from the first control unit 10 (step S16) are monitored. As a main power source starting condition, detection of a calling signal (step S1
0), key input detection (step S11), document insertion (step S12), device abnormality detection (step S1).
3), the detection of the designated time (step S14), the output reduction of the secondary battery 30 and the solar cell 26, and the like. The data reception from the first control unit 10 is performed when the main power supply is on and the second control unit is operating.

In detecting the call signal in FIG.
4. The ciDET signal detected via the photocoupler 61 is monitored, and it is determined whether the ciDET signal is the calling signal designated by the first control unit 10 in advance (step S18). The information of the ringing signal designated by the first control unit 10 is related to the cadence of the signal. The on time, the off time, the number of detection cycles, and whether those cadences are the ringing signals for the telephone or the ringing for the fax. It is made up of things like signals. This is because when the connected communication line receives the DRPD service, the call signal is divided into several kinds of cadences as shown in FIG. 5, and the transmission side wants to make a telephone call.
Alternatively, whether or not to perform FAX communication can be discriminated by distinguishing the cadence of the call signal without connecting the call. When the detected ciDET signal is a call signal for a telephone, the microcomputer 20 does not need to activate the facsimile device and can continue the standby operation as it is (step S20). ciD
If the ET signal is a fax calling signal, the microcomputer 2
In the case of 0, the hook relay 57 disconnects the handset from the communication line, activates the main power supply without making a telephone call (step S23), and shifts to FAX communication. If the detected ciDET signal is neither for the telephone nor for the fax, or if it is the telephone or fax common cadence designated as the detection information from the first control unit 10, like the call signal for the fax. Start the main power supply,
The first controller 10 is operated. When the FAX communication ends and the line is disconnected, the information is sent to the microcomputer 20 through the serial interface, and accordingly, the microcomputer 20 sets the PS signal to the Low level to stop the operation of the main power supply. Then, the charging of the secondary battery 30 is completed, and the FA
Return to the X standby state.

In the detection of the key input of FIG. 9, various key inputs of the operation unit are monitored, and when the key input is detected, it is determined whether or not it is the activation factor of 1. Normally, in facsimile machines, the types of keys are dial-related keys (numeric keypad and one-touch, speed dial keys, on-hook dial keys, etc.), keys for starting image transmission and reception, operations such as fine, standard, and automatic reception during communication. Original mode selection key to specify the mode (step S
27) Receiving mode selection key for selecting a calling signal, a mode for making a telephone call, a mode for automatically activating a FAX, and a mode for automatically switching either of them depending on the cadence of the calling signal (step) S28) includes a key for starting the registration operation and a key for stopping or canceling the operation. Of these, regarding the original mode selection (step S27) and the reception mode selection (step S28), when the first control unit 10 is activated each time the mode is selected, the time required for various initializations is entered by key input. Process to restrict,
The operability may be affected, such as the processing related to the communication between the first control unit 10 and the microcomputer 20. Therefore, the microcomputer 20 manages the mode and, for example, regarding the document mode selection, the information may be notified when the first control unit 10 is actually activated. In this embodiment, if the detected key is the original mode selection or the reception mode selection, the information is managed and controlled inside the microcomputer 20 without activating the main power source.
If it is any other key, the main power source is started to activate the first control unit 10
To operate.

In the detection of the document shown in FIG. 10, the document sensor is monitored, and when the insertion of the document is detected, the main power supply is started (step S38). In this case, if it is not necessary to start the document until the time comes, as in the case of a timer-triggered transmission of the document, or if a certain period of time has elapsed after the document was inserted, the main power supply is turned on regardless of the state of the document sensor. If there is permission to turn it off, the main power supply is turned off and it stands by.

In the detection of the apparatus state change of FIG. 10, the state change which is not the activation factor of the main power source, for example, the attachment / detachment of the recording section cartridge is monitored, and when detected, the first control section 10 activates the information. At the same time, the main power source is activated, for example, when the recording paper is pulled out and reception becomes impossible while the reception memory is fully used, the main power source is turned on (step S42) and error processing is performed (step S42). Steps S43 and S44).

To monitor the start of the timer shown in FIG. 11, the time designated by the first control unit 10 and the time measured inside 20 are compared, and when the times match, the main power source is started (step S46) The first controller 10 is operated to notify the start of the timer (steps S47 and S48).

In monitoring the charging request in FIG. 11, the solar cell 2
It is determined whether or not the electric power supplied from 6 decreases and the potential becomes lower than that of the secondary battery (step S50), and the secondary battery 30 is discharged and the voltage becomes 1.2 V or less.
It is monitored at N9 (step S51). If a charging request is detected here (step S52), the microcomputer 20
Sets OUT5 to high level, that is, PS signal to Hi
gh level. This turns on the transistor 46.
Therefore, the photo coupler 45 is turned on, and the IC 42 IN
1 goes to low level, so 42 OUT
1 oscillates, the primary side oscillates via 41 to supply power to the secondary side, and the main power supply rises. When the main power source rises, the voltage detection circuit 52 initializes the first control unit 10, and at the same time, the charging of the secondary battery 30 is started. As a result, the secondary battery 30 is charged again while maintaining the FAX standby state. In either case, the charging of the secondary battery 30 is started when the main power source is turned on, and the secondary battery 30 is always charged while the main power source is turned on. This information is then transmitted through the serial interface to the first
After being sent to the control unit 10, the operation control of the device is performed mainly by the first control unit 10.

Data reception from the first control unit 10 in FIG. 12 is performed when the main power supply is on and the first control unit is operating. The information sent from the first control unit 10 includes a data read request for the second system (step S53) (document presence / absence, various sensors, etc.), permission to turn off the main power supply (step S54), and data regarding a message to be displayed. (Step S55), time (step S5)
6), designated start time, and call signal detection parameter (step S58). The transmission data from the microcomputer 20 includes the response to the information read request, the key information, the cadence information of the detected calling signal, and the like.

As described above, as an effect of the present embodiment, in the line that has received the DRPD service, by controlling the activation of the facsimile apparatus according to the purpose, it is possible to further reduce the power consumption. For the original mode selection key, the reception mode selection key, etc. that do not require the main body of the facsimile device to be started each time the key is pressed, the startup control is performed to improve operability and further reduce power consumption. Can be realized.

[0026]

As described above, according to the present invention, in the facsimile apparatus including the first control section for controlling the facsimile main body and the second control section mainly for controlling the main power source, the standby state is low. The following effects can be obtained by operating only the second control unit for power consumption and monitoring the called and various key inputs by this second control unit.
In the line that has received the DRPD service, the cadence of the calling signal is monitored and the activation of the facsimile apparatus is controlled according to the purpose, whereby the operability can be improved and the power consumption can be further reduced. Further, depending on the type of the key, it is possible to improve the operability and further reduce the power consumption by discriminating between the one that activates the facsimile apparatus and the one that does not need to activate.

[Brief description of drawings]

FIG. 1 is a block diagram of a facsimile apparatus according to an embodiment.

FIG. 2 is a simplified circuit diagram showing a configuration of a second control unit and its periphery.

FIG. 3 is a simplified circuit diagram of a main power supply.

FIG. 4 is a simplified circuit diagram around the first control unit and other main parts.

FIG. 5 is a diagram showing various cadences of call signals.

FIG. 6 is a flowchart of an example.

FIG. 7 is a flowchart of an example.

FIG. 8 is a flowchart of an example.

FIG. 9 is a flowchart of an example.

FIG. 10 is a flowchart of an example.

FIG. 11 is a flowchart of an example.

FIG. 12 is a flowchart of an example.

[Explanation of symbols]

1 2nd control part 2 Call signal detection part 3 Original detection part 4 Operation part 5 Communication part with 1st control part 6 Display part 7 State detection part 8 Power supply 9 Time measurement part 10 1st control part 11 Reading part 12 Recording part 13 Communication unit with second control unit 14 Communication unit 15 ROM 16 Encoding / decoding unit 17 RAM module 18 Display unit 19 Key matrix circuit 20 1-chip microcomputer 26 Solar cell 30 Capacitor type secondary battery 34 Transformer 35 Transformer 36 Transformer 42 IC for controlling oscillation on the primary side of the transformer 43 FET 45 Photocoupler 46 Transistor 60 Handset off-hook detection switch (photocoupler) 61 Ring signal detection switch (photocoupler)

Claims (2)

(57) [Claims] 1. A main power supply for supplying power to each part of the apparatus main body, a first control section for controlling the system of the entire apparatus and being supplied with power from the main power supply, control of the main power supply, and a key Control of operation unit such as input and display,
And a second control unit that monitors a call signal from the exchange, and a secondary battery that is charged by the main power supply and supplies power to the second control unit . The control unit detects the call signal, which is the starting condition.
Cadence detection is started and the call signal
Phone calls depending on the on / off pattern
When it is determined that the call signal for the
Cadence detection is initialized without
When it is determined that the signal is a calling signal, the main power is turned on and the first
A facsimile machine characterized by notifying the control signal of the detected call signal . 2. A main power supply for supplying electric power to each part of the apparatus main body, a first control section for controlling the system of the entire apparatus and being supplied with power from the main power supply, control of the main power supply, and a key. Control of operation unit such as input and display,
And a second control unit that monitors a call signal from the exchange, and a secondary battery that is charged by the main power supply and supplies power to the second control unit . When there is a key input, the control unit determines the key type.
A key of a certain type depending on the type of key input.
When the judgment is made, the second controller does not turn on the main power source.
The key input is managed and controlled, and the specified type
When it is determined that the key is not, turn on the main power
A facsimile apparatus characterized by notifying the first control unit of key input detection .