JPH0614655B2 - Equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus, and more particularly, to a sub-C that has a standby power supply and is driven by the standby power supply.
The present invention relates to a facsimile machine having a PU and a display.

[Prior Art] A facsimile apparatus is equipped with a standby power supply for always keeping a reception ready state, and a sub CPU driven by this standby power supply manages a display.

In such an apparatus, even when the recording paper is not present even in the standby power mode, the display, for example, "Kirokken Tenken" or the like is displayed. That is, since the sub CPU manages the sensor for detecting the presence or absence of the recording paper, the recording paper sensor must be managed by both the main CPU and the sub CPU. As a result, the structure is complicated and the cost is high, which is extremely economically disadvantageous.

That is, in the past, the main power supply was turned on only during the reading, recording, and communication operations, and normally only the standby power supply was turned on to display "Kirokken Tenken" or the like, so the above-mentioned inconvenience occurred. .

[Purpose] The present invention has been made to eliminate the above drawbacks, and the recording paper sensor is driven by a standby power supply.
The second CPU (main CPU) driven by the main power supply can control the recording paper sensor independently of the CPU (sub CPU) of the main CPU and accurately display the status of the recording paper even after the main switch is turned on. An object of the present invention is to provide a facsimile device having a simple structure.

[Examples] Hereinafter, details of the present invention will be described based on Examples shown in the drawings.

FIG. 1 is a block diagram showing the overall structure of a facsimile apparatus to which the present invention is applied. The reference numeral 1 in the figure is a crystal oscillator, which generates a reference clock for the entire apparatus.

The output clock of the crystal oscillator 1 is a CPU (central processing unit) composed of a desired microprocessor element or the like.
2 is given as a reference clock. The CPU 2 is connected to the ROM 3, RAM 4, timer 5, PPI (Programmable Parallel I / 0) 6, 7, 8 and 10, and UPI (peripheral CPU) 9, 11 by a data and address bus.

A modem controller 12, a tonal detector 13, and a modem 14 are connected to the timers 5, PPIs 6, 7 respectively, and data input / output is performed with a communication line via these input / output ports. Tonal detector 1
A subscriber telephone line W and a telephone 28 are connected to 3 and 14 via a connection card (wiring board) 26.

The PPI 6 is for performing data input / output with the operation panel 31 and power supply control. The operation panel 31 and the feed switch 3 are operated via the operation panel / power supply control device 16.
It is connected to 2. Further, the operation panel 31 has a publicly known telephone switch. With this switch, the telephone line connected to the facsimile apparatus can be connected to the telephone 28 so that the facsimile communication mode can be switched to the normal telephone mode. There is.

The UPIs 9 and 11 control the operation of the recording system.
The UPI 9 includes a plunger driver 21 for controlling the recording paper cutter plunger 34, and a motor S for conveying the recording paper.
A motor driver 22 for controlling the SM2 is connected. A thermal head TPH is connected to the UPI 11 via a thermal head driver 25, and the UPI 11 drives the thermal head TPH according to print data to perform printing. The recording paper RP is conveyed by a pinch roller PR driven by a motor SSM2 as the recording operation progresses. Further, a recording paper sensor RPS constituted by using a photo interrupter, a limit switch, etc. is provided on the conveyance path of the recording paper RP.

The PPI 10 inputs / outputs data with respect to the reading system and the alarm system. An image data processor / driver 23 and a lamp driver 24 are connected to the PPI 10. That is, the document DOC is conveyed by the feed roller FR while being illuminated by the light source LMP controlled by the lamp driver 24, and the reflected light from the document DOC is coupled via the lens L onto the line sensor LS including a CCD sensor or the like. To be imaged.

The image data output from the line sensor LS is amplified by the amplifier 33, input to the image data processor / driver 23, and further sent to the main data bus via the PPI.

A buzzer speaker 19 is connected to the PPI 10 via a buzzer driver 18.

The power of the entire device is supplied from the main power supply 27. However, in the standby state, the main power supply device 27 is OFF, and the stanban power supply 29 is operated by the operation panel 31 and the N
Only the CU (network control unit) 15 is supplied with power and is in a standby state. A commercial AC power supply is connected to these power supply devices 27 and 29 via a main switch MSW and a noise filter 30.

The NCU 15 is an NCU having an automatic reception function, and the line is connected to the telephone 28 according to a call signal (CI) from the telephone line.
Side to the facsimile side. At this time, the main power supply device 27 is activated via the operation panel / power supply control device 16, and power is supplied to the tonal detector 13 and the modem 14. The main power can be turned on from the operation panel 31.

FIG. 2 shows a schematic structure of the operation panel 31.

Next, the operation of the device of the present invention configured as described above will be described with reference to the flowchart of FIG. 3 and the timing chart of FIG. In FIG. 4, when the commercial power supply of the office is on, the standby power supply 29 is always on, and the main power supply 27 is on when the standby power supply 29 starts up and when transmitting, receiving, or keying.
Then, after the respective processing is completed, it becomes OFF.

That is, as shown in FIG. 3 (A), when the main power supply side is turned on, the main CPU determines in step S0 whether or not the standby power supply is rising. At the rising time, initialization is performed in step S2, and in step S3 the recording paper is set. By obtaining information from the sensor 60, the presence / absence of recording paper is detected, and if there is no recording paper, the sub CPU 55 is caused to display "Kirokken Tenken" in step S4.
Transfer the display command and display data to.

Subsequently, in step S5, the OFF notice command is transferred to the sub CPU 55, and the control of the main CPU is ended.

On the other hand, if the standby power is not on, that is, if the transmission, reception, key input command, etc. are transferred from the sub CPU, after the processing according to the command is completed,
The FF advance notice command is transferred to the sub CPU 55.

Next, as for the operation of the sub CPU, as shown in FIG. 3 (B), it is known that the main power source has risen in steps S6 and S7, and the main operation is that the sub CPU 55 is in the operating state due to the rise of the standby power source. Notify CPU2.

Then, in step S8, a command from the main CPU is waited, and when a command comes, it is identified in step S9 whether or not it is a display command. If it is a display command, display data is input in step S10, and in step S11. The display 52 displays "Kirokken Tenken".

Then, in step S12, it waits for a command as to whether or not there is a factor of turning off the main power.

Then, the sub CPU 55 operates with the standby power supply even when the main CPU is turned off, and continues to display "Kirokken Tenken".

When the operator notices this display and opens the necessary portion of the case of the facsimile apparatus and sets the recording paper, it is detected in step S13 that the case is closed,
When the main power supply is turned on in step S14, the main CPU transfers recording data to the sub CPU so as to clear the display data "Kirokken Tenken" because there is recording paper. Therefore, the user can know that the recording paper is set correctly.

The sub CPU monitors the key input, automatic reception, etc., and turns on the main power supply every time there is a key input, and transfers data to the main CPU (S13 to S15).

In addition, when a command other than display is received from the main CPU, for example, when an OFF advance notice command is received, the main power supply is turned off, and other commands are processed accordingly.

In this way, it is possible to continue to display the presence or absence of recording paper and the contents of other display-required items without requiring a character ROM dedicated to the sub CPU.

[Effect] As is apparent from the above description, according to the present invention, in the facsimile apparatus including the first CPU (sub CPU) driven by the standby power supply, the standby power supply is
After N, the power is once turned on to start the second CPU (main CPU), the second CPU initializes, then captures the detection output of the recording paper detector, and outputs the detection result to the first. The CPU is configured so that the main power is cut off after that.
The display can be displayed even when the standby power supply rises without placing the detector under control, and even if the recording paper is attached or detached while the main switch is OPF, turning on the main switch will make it more accurate. It is possible to provide an excellent facsimile apparatus that can display the state of recording paper, consumes less power, and is simple and inexpensive.

[Brief description of drawings]

FIG. 1 illustrates an embodiment of the present invention. FIG. 1 is a block diagram of a control circuit, FIG. 2 is a block diagram of a control circuit of an operation panel portion, and FIGS. Flowchart diagram for explaining the control operation of the CPU and the sub CPU,
The figure is a timing chart illustrating the ON state of the standby power supply and the main power supply. 27 ... Main power supply, 29 ... Standby power supply 31 ... Operation panel, 50 ... Main CPU 52 ... Display, 55 ... Sub CPU

Claims (1)

[Claims] 1. A standby power supply which is activated by turning on a main switch, an operation unit having a display unit and a key input unit for displaying, and a first power supply unit which is supplied with power from the standby power supply and controls display of the display unit. CPU, main power source activated by key input of the key input section or incoming call, detector for detecting presence or absence of recording paper, recording means for recording, reading means for reading, and main power source from the main power source. It has a second CPU which is supplied with power and controls the reading means and the recording means and takes in the detector output of the detector. When the standby power supply is turned on by turning on the main switch, the first CPU is activated. Once turns on the main power supply, and once the main power supply turns on, the second CP
U takes in the detection output of the above detector after initialization,
Further, the facsimile machine which is transferred to the first CPU, and then the main power supply is cut off, and the first CPU displays on the display device according to the transferred detection output.