JPH01130661A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To automatically turn and off the power source of a facsimile equipment interlockingly with the on-and-off of a power source of a connected personal computer by monitoring the level of an interface signal and connecting and disconnecting the main power source of the facsimile equipment according to the level. CONSTITUTION:A power circuit 3 supplies a source current to a monitoring circuit 1 and a control circuit 2 while a commercial source power is impressed to a power source connector 7 and the monitoring circuit 1 monitors the signal level of an interface signal line 5 and feeds the result to the control circuit 2. The control circuit 2 decides the operating state of an external controller according to the output of the monitoring circuit 1 to control a power circuit 4. The power circuit 4 receives the output of the control circuit 2 and executes the on-and-off for supplying the source current to respective parts 8 in a control circuit 6 and the facsimile equipment based thereon. In such a way, according to the on-and-off of the power source of the external controller, the main power source of the facsimile equipment is automatically turned on and off.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a facsimile machine, and more particularly to a facsimile machine having a power supply control circuit suitable for use with external control devices connected thereto.

(Prior Art) In recent years, facsimile machines are often used not only alone, but also as facsimile systems by adding a personal computer or the like to control the facsimile machines.

For example, there is a speed dial function that allows you to register a recipient's phone number and automatically dial it with a simple operation, and a speed dial function that allows you to register a document on a personal computer with one scan of the document 9 and automatically send it to multiple specified destinations. Facsimile functions are becoming more sophisticated through features such as broadcast transmission functions.

Facsimile machines used for such purposes are equipped with an external connection circuit, but the power supply circuit, like other general 7-aximu IJ devices, is connected to the operator by a control circuit that is constantly supplied with power supply current. The connection of the device main power source is turned on by the start of communication operation by the switch or by the start of the reception operation by detection of a call signal from the exchange.

(Problems to be Solved by the Invention) In the above-mentioned conventional 7-axis device, the personal computer and the power supply circuit connected to the outside are independent of each other and have no relation to each other.

On the other hand, the power supply circuit of a personal computer, etc. that should be connected to the outside to configure a facsimile system is
There is only a power switch operated by the operator, and this switch controls the power on/off of the entire personal computer.

Therefore, when these devices are used as a facsimile system, there is a drawback in that an operator must operate the power switches of all the devices involved.

The object of the present invention is to eliminate such drawbacks and to provide a facsimile machine in which the main power is automatically turned on and off by turning on and off the power of an external device such as a partial device connected to the facsimile machine. Our goal is to provide the following.

(Means for Solving the Problems) In order to achieve the above object, the facsimile 13 device of the present invention includes a first power supply circuit 3 that supplies a power supply current to a portion of the device that requires a constant power supply; the first in the device;
The power supply circuit 3 supplies power supply current? A second device that connects or disconnects the power supply current to parts that are not receiving it. 4-source circuit 4;
From the power supply circuit 3 of the Sgl (monitoring circuit 1 which receives source current and monitors the external interface signal), which receives power supply current from the first power supply circuit 3 and monitors the output of the monitoring circuit 1, Operation of power supply circuit 4? Control circuit 2 to control
It has a power supply control circuit consisting of:

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing a 'r11 source control power supply line according to an embodiment of the present invention.

As shown in FIG. 1, the main parts of the power supply control circuit in this actual case are a monitoring circuit 1, a control circuit 2, a first power supply circuit 3, and a second power supply circuit.
It is composed of a power supply circuit 4. Note that 5 is an interface signal line from a control device (not shown) connected to an external device such as a personal computer, and a control circuit 6
is the main control circuit of the facsimile machine, and F is the commercial power supply w! Reference numerals 8, 8, . . . , 8 indicate various parts within the apparatus, such as a document reading section, a recording section, a communication control section, and an operation section.

The monitoring circuit 1 is a circuit that monitors the signal level of the interface signal line S, and its output is given to the control circuit 2.

The control 11 circuit 2 is a circuit that is connected to the outside and closely monitors the state of each part inside the control device (not shown) and the factor control device, and controls the power state inside the device, and its output is given to the power supply circuit 4. There is.

The power supply circuit 3 receives commercial power from the power connector 7,
This is a circuit that converts power into a power supply suitable for sending to various parts to which power should always be supplied, and supplies power supply current to keep the monitoring circuit 1 and control circuit 2 in constant operation.

The power supply circuit 4 is the main power supply circuit of the 7-axis ξ-axis device,
It receives commercial power from the power connector 7, is controlled by the control circuit 2, supplies output to the control circuit 6, and also supplies power to each part 8.8 and 11-8 in the device.

The control circuit 6 is connected to an interface signal line 5 with an external device such as a personal computer (not shown), and exchanges control signals with the external device via the interface signal @5. Further, the output is given to each section 8.8--8 of the Tsuakumi device to control them.

Next, the power supply current control operation of the embodiment shown in FIG. 1 will be explained.

The power supply circuit 3 receives commercial power from a power connector without going through a power switch. Therefore, the power supply circuit 3 constantly supplies the power supply i to the monitoring circuit 1 and the control circuit 2 while commercial power is applied to the power connector.

The monitoring circuit 1 monitors the signal level of the interface signal line S, and as this type of interface signal line, those compliant with Japanese Industrial Standard C6861 are widely used.

This 06861 signal level must be greater than +3 volts or -8 volts at the receiving end at the interconnect circuit boundary point.
The level below Volt is defined as the significant level. Therefore (the viewing path 1 monitors the signal level of the interface signal line S and has a voltage of +3 volts or more, or -8
If the level is below volts, it is determined that an external control device such as a personal computer (not shown) is in an operating state, and if it is not above +8 volts or below -8 volts, it is determined that the external control device is in an inactive state. The determination is made and the result is sent to the control circuit 2.

The control circuit 2 receives the output of the monitoring circuit 1 and determines the operating state of the external control device based on this signal. If the external control device is powered on, the interface signal #S will be at a significant level, and if the external control device is powered off, the signal on the interface signal line 5 will normally be at a no-voltage level. Therefore, the control circuit 2 is
Based on the output of the monitoring circuit 1, the operating state of the external control device can be determined and the power supply circuit 4 can be controlled.

The power supply circuit 4 receives the output of the control circuit 2, and based on the output, controls the control circuit 6 and each section 8, 8 in the facsimile machine.
...Turns on and off the power supply current to 8.

In this way, the main power of the facsimile machine is automatically turned on and off as the external control device is turned on and off.

(Effects of the Invention) As explained above, the present invention provides a facsimile system that monitors the level of the interface signal of the facsimile machine and connects or disconnects the main power supply of the facsimile machine depending on the level. The facsimile machine's power is automatically turned on and off in conjunction with the power on and off of the connected personal combinator, etc.
It has the effect of being able to be turned off.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the main parts of an embodiment of the present invention. 1-...Monitoring circuit 2...Control circuit 3@@-First power supply circuit 4...Second power supply circuit 5--Interface signal line 6...Control circuit F/Fist/Power connector Each part of the 8 fist fighting device

Claims (1)

[Claims] A first power supply circuit that supplies power supply current to parts of the device that require constant power supply; and a supply of power supply current to parts of the device that are not supplied with power supply current by the first power supply circuit. a second power supply circuit that connects and disconnects the power supply circuit; a monitoring circuit that receives power supply current from the first power supply circuit and monitors the external interface signal; and a monitoring circuit that receives power supply current from the first power supply circuit and monitors the external interface signal; A facsimile apparatus comprising a power supply control circuit including a control circuit that controls the operation of the second power supply circuit based on the output of the circuit.