JPH02266645A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent a telephone function from being lost even at power failure or with a power switch turned off by providing a pulse switch interface circuit sending a dial signal to a dial circuit energized from a telephone circuit. CONSTITUTION:A DTMF/pulse switch circuit 50 being a pulse switch interface circuit sending a dial pulse to a dial circuit 56 receiving power from telephone circuits L1, L2 with a power voltage input given as 0V, is connected between a display control operation button processing circuit 35 and a dial circuit 56. The DTMF/pulse switch circuit 50 sends a selection signal by using the power obtained from the telephone circuit to a telephone circuit when the operation button of a ten-key section on a display control operation button processing circuit 35 is depressed. Thus, the telephone function is provided to a facsimile equipment at power failure and when a power switch is turned off to validate only the talking.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a facsimile machine having a numeric keypad operation button for sending a selection signal to a telephone line on a display control operation button processing circuit.

[Conventional technology]

FIG. 3 is a block connection diagram showing a conventional facsimile machine. In the figure, 31 is a main board, 32 is a recording thermal head, 33 is a contact type image sensor for reading, and 134 is a mechanical unit including mechanical switches. , 35 is a display control operation button processing circuit consisting of a liquid crystal display, a light emitting diode, a push button, and a buzzer; 36 is a recording pulse motor; 37 is a reading pulse motor; 38 is thermal recording paper; 39 is a DC power supply circuit;
0 is a recording processing circuit, 41 is a reading processing circuit/reduction circuit, 4
2 is a line memory control circuit, 43 is a Gn/mini picture signal processing circuit, 44 is a band compression processing circuit, 45 is a pulse motor control circuit, 46 is a mechanical sequence transmission control circuit, 47 is a mechanical control drive circuit, 48 is a modem, 49 is a network control unit (hereinafter referred to as NCU unit). FIG. 4 is a block connection diagram showing details of the NCU section 49, 51 is a noise filter connected to telephone lines L+, Li, 52 is a line switching circuit, and 53 is a selection signal sent to telephone lines L+, Lz. Hooks that sometimes turn on
Relay circuit, 54 is a sending/receiving circuit, 55 is a rectifier, 56
is a dial circuit which converts the dial signal from the mechanical sequence transmission control circuit 46 into a selection signal and outputs it. Next, the operation will be explained. First, by pressing the 3×4 matrix operation buttons on the numeric keypad section on the display control operation button processing circuit 35, the numbers θ to 9 and symbols x written on each operation button are sent to the mechanical sequence transmission control circuit 46. A signal corresponding to # etc. is sent, and in response to this, the mechanical sequence transmission control circuit 46 sends a dial signal to the dial circuit 56 in the NCU section 4 section 9. On the other hand, the hook relay of the hook relay circuit 53 is turned on by the mechanical sequence transmission control circuit 46, and through the line switching circuit 52 and the noise filter 51,
A selection signal is sent from dial circuit 56 to telephone lines L t , L t . After sending the selection signal, the communication relay (CML relay) of the line switching circuit 52 is turned on, and the telephone lines Ll and Lt are connected to Tx and Rx through the transmitting/receiving circuit 54 and the noise filter 51.
It is connected to the line and sends and receives image signals. On the other hand, as shown in FIG. 3, when the input voltage AC 100V to the power supply circuit 39 of the facsimile machine stops due to a power outage or other cause, or when the power switch PSW turns OFF, the voltage supplied to the main board 31 stops. Therefore, the function of the mechanical sequence transmission control circuit 46 shown in FIG. No, phone line L
, , no selection signal is sent to L□. On the other hand, the mechanical sequence transmission control circuit 46 is connected to the Gu/mini image signal processing circuit 43. A signal is sent to the band compression processing circuit 44, and the recording processing circuit 40. The line memory control circuit 42 is supplied with recording commands and memory control commands, and the pulse motor control circuit 4
5 to drive each recording pulse motor 36 and reading pulse motor 37. On the other hand, the contact type image sensor 33 reads the content of the document, and after the image signal processed by the reading processing circuit/reduction circuit 41 is temporarily held in the line memory control circuit 42, the band is compressed by the band compression processing circuit 44, and the image signal is processed by the NCU. The picture S language is transmitted through the transmitter/receiver circuit 54 of the section 49 . On the other hand, the received image signal is sent to the mechanical sequence transmission control circuit 4.
6 to the band compression processing circuit 44 or the Gn/mini image signal processing circuit 43, and after being subjected to predetermined processing, the signal is input to the recording processing circuit 40. Then, the thermal head 32 prints on a heat-sensitive recording paper 38, and the pulse motor 36 sends out the image.

[Problem to be solved by the invention]

Conventional facsimile machines are configured as described above, so when there is a power outage or the power of the facsimile machine is off, even if you press the operation button on the numeric keypad on the display control operation button processing circuit 35 of the facsimile machine, Since the supply voltage to the main board 31 is stopped, the mechanical sequence transmission control circuit 46 on the main board 31
Since the dialing circuit 1156 does not operate, the dialing circuit 1156 also becomes inoperable, resulting in problems such as the inability to send selection signals to the telephone lines Ll and Lt. In other words, there were problems such as complete loss of telephone functions. This invention was made to solve the above-mentioned problems, and even when the input voltage AC100V to the facsimile machine stops due to a power outage or the like, or when the power switch of the facsimile machine is turned off, An object of the present invention is to provide a facsimile machine that can send a selection signal to a telephone line by pressing an operation button on a numeric keypad section on a display-based button processing circuit.

[Means to solve the problem]

The facsimile device according to the present invention sends a signal corresponding to each operation button pressed on the numeric keypad section from the display control operation button processing circuit, and receives the signal from the mechanical sequence transmission control circuit to the dial circuit in the network control section. A dial signal is sent, and a selection signal is sent from the dial circuit to the telephone line by the hook relay circuit, which is turned off by the mechanical sequence transmission control circuit. In particular, a pulse switch interface circuit that sends a dial pulse to the dial circuit receiving power from the telephone line when the power input is Ov is connected to the display control operation button processing circuit and the dial circuit. It is connected between.

[For use]

The pulse switch interface circuit in this invention receives information corresponding to the operation buttons of the numeric keypad on the display control operation button processing circuit to the DTMF/pulse switch pull dialer, and when the power input to the main board is Ov, the dial It is operative to supply dial pulses corresponding to the above information to the circuit and send a selection signal to the telephone line by the above dial circuit in the N CtJ section.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 31 is the main board of the facsimile machine;
2 is a thermal head for thermal recording of a facsimile machine; 33 is a contact image sensor for reading image information on a document; 234 is a mechanical unit including a mechanical switch group; 35 is a liquid crystal display, a light emitting diode, a switch group, and a buzzer. 36 is a recording pulse motor, 37 is a reading pulse motor, 38 is a thermal recording paper, 39 is a power supply circuit, 40
4 is a recording processing circuit; 41 is a reading processing circuit/reduction circuit that performs reading processing and reduction of read data; 42 is a line memory control circuit; 43 is a Gn/mini image signal processing circuit;
4 is a band compression processing circuit, 45 is a pulse motor control circuit,
46 is a mechanical sequence transmission control circuit, 47 is a mechanical control drive circuit that controls the mechanical unit 34, 48 is a modem that handles modulation and demodulation of image signals, 49 is an NCU section of a network control unit having a network interface, and 50 is added as a measure against power outages. This is a DTMF/pulse switch circuit as a pulse switch interface circuit. FIG. 2 shows an interface between the main board 31 and the display control operation button processing circuit 35 shown in FIG. The correlation with the transmission control circuit 46 is shown. The DTMF/pulse switch circuit 50 includes a photocoupler 57, a diode 58, a transistor 59, and a DTMF/pulse switch dialer 60 that interfaces with the display control operation button processing circuit 35. Next, the operation will be explained. First, when the power switch PSW of the source circuit 39 is on, the numeric keypad section on the display control operation button processing circuit 35 is
The operation from pressing the 4-matrix operation button to transmitting a dialing signal to the telephone line, that is, the telephone lines L1 and Lt in FIG. 2, is the same as that described with reference to FIGS. 3 and 4. On the other hand, in FIG. 1, when the power switch PSW of the power supply circuit 39 is in the off state, the DTMF/pulse switch circuit 5
0, follow the steps below to connect the telephone line L i H in FIG.
A selection signal is sent to L2. First, under this condition, since the power input is OV, the photocoupler 57 is turned off, which causes the transistor 5
The base potential d of transistor 9 becomes OV, and as a result, the collector potential of transistor 59 becomes OV, turning on the off-hook input terminal e of DTMF/pulse switch pull dialer 60. At this time, when the operation button of the 3x4 matrix of the numeric keypad section on the display control operation button processing circuit 35 is pressed, four row lines and three column lines Rl-Ra are pressed. , Ct to C1, the information corresponding to each operation button is displayed in the DTMF/pulse switcher pull dialer 6.
0 and N through the dial signal output line a.
The hook relay circuit 53. The selection signal is passed through the line switching circuit 52 and the noise filter 51 to the telephone line L +
, Lz. In this case, DT'
It is assumed that power is supplied to the MF/pulse switcher pull dialer 60 and the dial circuit 56 through a separate route from the telephone lines L+ and Lt. In the above embodiment, the transistor 59 is provided in the DTMF/pulse switch circuit 50 in order to turn on the off-hook input terminal, but other on/off hook input terminals such as dedicated ICs are provided.
An off control component may also be provided.

【Effect of the invention】

As described above, according to the present invention, a DTMF/pulse switch circuit including a DTMF/pulse switch pull dialer, a transistor, a photocoupler, etc. is provided between the display control operation button processing circuit of a facsimile machine and the organization iB unit NCU section. The input voltage to the facsimile machine is AC100.
Even when the V is stopped or the power switch of the facsimile machine is off, this DTMF/pulse switch circuit allows the DTMF/pulse switch circuit to connect the telephone line to the telephone line when the operation button on the numeric keypad on the display control operation button processing circuit is pressed. The available power can be used to transmit selection signals, so even during power outages and when the power switch is off,
The facsimile device can be provided with a telephone function, and the effect is that it can be used only for telephone calls.

[Brief explanation of drawings]

FIG. 1 is a block connection diagram showing a facsimile machine according to an embodiment of the present invention, FIG. 2 is a block connection diagram showing an interface between the display control 11 operation button processing circuit and the main processing circuit of the invention, and FIG. FIG. 4 is a block connection diagram showing a conventional facsimile machine. FIG. 4 is a block connection diagram showing an ink-face of a conventional display control operation button processing circuit and a main processing circuit. 35 is a display control operation button processing circuit, 46 is a mechanical sequence transmission control circuit, 49 is a network control unit (NCU unit), and 50 is a pulse switch interface circuit (DT
MF/pulse switch circuit) 53 is a hook relay circuit, 54 is a sending/receiving circuit, and 56 is a dial circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Patent applicant: Mitsubishi Electric Corporation (2 others)

Claims (1)

[Claims] a display control operation button processing circuit that sends a signal corresponding to each operation button pressed on the numeric keypad;
A mechanical sequence transmission control circuit receives a signal from this display control operation button processing circuit and sends a dial signal to a dial circuit in the network control unit, and is turned on by this mechanical sequence transmission control circuit to transmit a telephone line from the dial circuit to the telephone line. a hook-relay circuit for sending a selection signal to a facsimile machine, the facsimile machine is connected between the display control operation button processing circuit and the dial circuit, and is connected to the dial circuit receiving power from the telephone line; A facsimile machine characterized by being provided with a pulse switch interface circuit for transmitting signals.