JPH04249964A - Cordless facsimile equipment - Google Patents

Abstract

PURPOSE:To connect a line connection section connecting to a line to a facsimile main body having a picture read section and a printer section or the like in a radio wave. CONSTITUTION:A facsimile number of a transmission destination is sent from a facsimile main body section to a line connection section 1 together with a transmission command signal at the transmission of an original to control a line circuit 15 and to close the line and the dial signal is sent to the line. When an acknowledge signal is sent from an opposite party, a control processing section 10 of the line connection section 1 sends a transmission start signal to the facsimile main body section and a system control section of the facsimile main body section receives the transmission start signal to start a picture read operation of a picture read section. A picture data outputted from the picture read section is subject to band compression and the result is sent to a MODEM section, where it is modulated and sent in a radio wave to the line connection section 1 via the picture transmission section and the antenna. The line connection section 1 receives the picture signal by a picture reception section 12 and sends it to the line through the line circuit 15.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless facsimile apparatus in which a line connecting section connected to a line and a facsimile body having an image reading section, a printer section, etc. are connected wirelessly.

0002

BACKGROUND OF THE INVENTION In recent years, facsimile machines have become so popular that most offices are equipped with facsimile machines, and the size of facsimile machines is becoming smaller and lighter.

0003

[Problem to be Solved by the Invention] However, since normal facsimile devices are connected to a telephone line or facsimile communication network by wire, in large offices or offices divided into multiple floors, the facsimile communication network is wired. It is customary for a facsimile machine to be installed in a part of the office.

[0004] Therefore, when transmitting a document, it is necessary to move to a facsimile machine located away from the desk or on the floor and perform the transmitting operation there. Furthermore, in offices, it is customary for facsimile machines to be installed at a distance from the desk, so when a facsimile document is received from outside, there is a problem in that it is not possible to directly view the received document.

The present invention solves the above-mentioned problems, and provides a cordless facsimile device that can be conveniently used by placing the main body of the facsimile at any position away from the connection terminals of telephone lines and facsimile communication networks. The purpose is to provide

[0006]

[Means for Solving the Problems] To this end, the cordless facsimile apparatus of the present invention includes a line circuit that transmits and receives signals to and from the line as well as opens and closes the line, and an image signal sent from the line circuit. An image transmitter that modulates data signals, etc. and sends them to the antenna; an image receiver that demodulates the image signals, data signals, etc. received by the antenna and sends them to the line circuit; and inputs various signals sent from the line. a control processing unit configured to transmit a signal in response to the signal via the line circuit; An image receiving section that receives and demodulates the image, an image transmitting section that modulates the image signal and data signal and transmits it via an antenna, and demodulating the image signal from the image receiving section to create image data and transmitting a band-compressed transmission image. A modulation/demodulation section that inputs and modulates data; an image reading section that optically scans the image to be transmitted and generates an image signal; and a printer that receives and prints the image data demodulated and band expanded by the modulation/demodulation section. and a system control section that controls the operations of an image transmitting section, an image receiving section, a modem section, a printer section, and an image reading section, and a system control section that controls the operations of an image transmitting section, an image receiving section, a modem section, a printer section, and an image reading section. The device is configured to transmit and receive image signals and data signals wirelessly.

[0007]

[Operation] When sending a document, etc., the facsimile body sends a transmission command signal together with the facsimile number of the destination to the line connection section, controls the line circuit of the line connection section, blocks the line, and dials the number on the line. Send a signal.

[0008] When a CED signal (response signal) or the like is sent from the other party, the control processing section of the line connection section inputs these signals via the line circuit, and correspondingly sends a DCS signal or the like to the other party. send to the side. When a CFR signal (reception preparation confirmation signal) is sent from the other party, the control processing section of the line connection section sends a transmission start signal to the facsimile main body, and the system control section of the facsimile main body starts transmission. Upon receiving the signal, the image reading section starts the image reading operation.

[0009] The image data output from the image reading section is band-compressed, then sent to the modulation/demodulation section, modulated, and wirelessly transmitted to the line connection section via the image transmission section and antenna. In the line connection section, the image signal is received by the image receiving section and sent to the line through the line circuit.

On the other hand, when a calling signal is sent from an external facsimile machine, it is input to the line circuit of the line connection section,
The control processing section of the line connection section sends a CED signal (response signal) etc. to the other party's facsimile via the line circuit. On the other hand, when a DCS signal or the like is sent from the other party, the control processing section sends out a CFR signal (reception preparation confirmation signal) via the line circuit.

[0011] When an image signal is sent from the other party, the control processing section wirelessly transmits the image signal to the facsimile main body through the image transmitting section, and the facsimile main body receives the image signal. The image data is sent from the section to the modulation/demodulation section and demodulated, and then expanded in the band compression/expansion section, and then sent to the printer section, where the image is printed out.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block diagram of the line connection section 1 of the cordless facsimile machine, and FIG. 2 shows a block diagram of the facsimile main body section 2. As shown in FIG.

The line connection section 1 is a section connected to a telephone line, including an image transmission section 11, an image reception section 12, a bell reception circuit 14 for receiving a bell signal from the line, and a section connected to the telephone line for receiving a bell signal from the line. A line circuit 15 that closes and opens, a data signal input section 17 that takes in data signals, and a modem circuit 18
, a serial communication interface 19, and a control processing section 10 whose main part is a CPU that performs control processing such as sending and receiving facsimile calls.

The image transmitter 11 includes a bandpass filter,
It consists of an oscillator, an FM modulator, etc., and the transmission output side is connected to the antenna 16, which performs FM modulation on the image signal and data signal sent via the line, outputs the specific frequency signal to the antenna 16, and sends the facsimile main body. Send to 2.

The image receiving section 12 includes a bandpass filter,
It consists of an RF amplifier, mixer, local oscillator, intermediate frequency circuit, demodulation circuit, filter, etc., and receives and demodulates the transmission signal (image signal and data signal) from the facsimile main unit 2 via the antenna 16, and the image signal is sent to the line. The data signal is output to the circuit 15, and the data signal is output to the control processing section 10.

The control processing unit 10 is mainly composed of a one-chip CPU with a built-in ROM etc. on the same chip, and based on program data written in advance in the ROM,
It performs input/output processing of various response signals and confirmation signals associated with facsimile transmission and transmission, as will be described later.

A line circuit 15 connected to the line terminal 13 blocks or opens the line in response to a control signal from the control processing unit 10, and outputs an image signal from the line to the image transmitting unit 11. It is configured to send an image signal from the image receiving section 12 to a line. Further, the bell receiving circuit 14 is connected to the line terminal 13, receives a bell signal arriving from the line, and sends the signal to the control processing section 10.

Modem circuit 18 connected to line circuit 15
is the DCS signal (digital command signal) sent from the line
is demodulated and sent to the control processing unit 10 via the serial interface 19, and the MCF signal (confirmation signal), CFR signal (reception preparation confirmation signal), and DI from the control processing unit 10 are demodulated.
It is configured to modulate the S signal (identification signal) and output it to the line circuit 15.

The data signal input section 17 inputs various coded command signals sent from the facsimile main body section 2, which will be described later, via the image receiving section 12, and inputs them to the control processing section 10.
send that signal to.

FIG. 2 shows a block diagram of the facsimile main unit 2. As shown in the figure, the circuit of the facsimile main unit 2 includes an image transmitting section 21, an image receiving section 22, a data signal input section 23, and a data signal output section. 24, a modulation/demodulation section 25, a band compression/expansion section 27, a printer section 28, an image reading section 29, and a system control section 20 whose main section is a CPU that performs control processing for each circuit.

[0022] The image transmitter 21 includes a bandpass filter,
It consists of an oscillator, an FM modulator, etc., and the transmission output side is connected to the antenna 26, which FM modulates the image signal and the data signal from the data signal output section 24, outputs a specific frequency signal to the antenna 26, and connects the line connection section 1. Send to the side.

The data signal output section 24 sends a call command signal, dial signal, etc. from the system control section 20 at the time of transmission to the image transmission section 21.

The image receiving section 22 includes a bandpass filter,
It consists of an RF amplifier, a mixer, a local oscillator, an intermediate frequency circuit, a demodulation circuit, a filter, etc., and receives transmission signals (image signals and data signals) from the line connection section 1 via the antenna 26, and the image signal is transmitted to the modulation and demodulation section 25. The data signal is connected to be sent to the system control section 20 through the data signal input section 23.

The image reading section 29 has a structure in which, for example, light from a fluorescent light source lit at high frequency is irradiated onto the document, and the reflected light is inputted to an image sensor such as a CCD through a lens, or an LED array. It is used as a light source, and the light is input through a rod lens to an image sensor that is in close contact with the document. Furthermore, this reading section 29 performs main scanning in the height direction and sub-scanning in the width direction of the document while moving the document using the document feeding mechanism, and outputs an electric signal (image signal) according to the density of the image. do.

The band compression/expansion section 27 includes the image reading section 29
The data sent from the modem section 25 is compressed during transmission, and the data sent from the modulation/demodulation section 25 is expanded when received. If there are continuous whites or blacks on the transmission document side, the data is compressed according to certain rules. Perform redundant data suppression, that is, redundancy suppression coding,
The amount of data is reduced to shorten the transmission time, and upon reception, the data is decompressed and restored to the original data.

The modulation/demodulation section 25 performs a modulation process of superimposing the data signal from the band compression/expansion section 27 on a carrier wave, or a process of demodulating an image signal sent through a line. The printer section 28 has, for example, a thermal head, and prints the received data sent from the band compression/expansion section 27 onto thermal paper. 30 is a display section for displaying facsimile numbers and the like, and 31 is an operation section provided with dial button switches and various function keys.

[0028] The system control unit 20 includes a CPU, a ROM,
It is mainly composed of a microcomputer consisting of a RAM, etc., and controls the scanning of the image reading section 29 during transmission, the printer section 28 during reception, and the display control of the display 30. etc., to control the operation of each part.

In each unit configured as described above, the printer section 28 and the image reading section 29 are connected to the band compression/expansion section 27 via a data bus, and the band compression/expansion section 27 is connected to the band compression/expansion section 27 via a data bus.
7 is connected to the modulation/demodulation section 25 via a data bus, and the system control section 20 is connected to all units via a control bus.

As the power supply circuit 32 of the facsimile body 2, a rechargeable secondary battery is used.

Next, the operation of the cordless facsimile machine will be explained. The facsimile main unit 2 is usually installed at an arbitrary position such as on a desk, away from the line connection unit 1.

When transmitting a document, operate the numeric keypad or the like on the operation section 31 of the facsimile main unit 2 to input the facsimile number of the destination, set the document on the document table of the image reading section 29, and press the The transmission switch of section 31 is turned on.

At this time, a transmission command signal is sent to the data signal output section 24 together with the facsimile number, and is further sent from the data signal output section 24 to the line connection section 1 via the transmission section 21 and the antenna 26. In the line connection section 1, the transmission command signal, facsimile number, etc. are received by the image reception section 12 via the antenna 16, and sent to the control processing section 10 via the data signal input section 17. At this time, the control processing unit 10 controls the line circuit 15 to block the line and sends a destination dial signal to the line.

[0034] Then, from the other party's facsimile machine, the CE
When the D signal and the DIS signal are sent, the control processing unit 10
The reception of these signals is recognized via the line circuit 15, modem circuit 18, and serial interface 19, and the DCS
The signal and TCF signal are sent to the line via the modem circuit 18 and line circuit 15, and sent to the other party's facsimile.

[0035] Next, the CF is sent from the other party's facsimile machine.
When the R signal (reception preparation confirmation signal) is sent, the control processing section 10 sends a transmission command signal for the original image to the facsimile main body section 2 via the transmission section 11 .

The system control section 20, which receives the transmission command signal via the antenna 26, the reception section 22, and the data signal input section 23, instructs the image reading section 29 to read the transmission document. The image reading section 29 moves the set document and sends the document to a scanning section using an image sensor, and converts the image of the document into an electrical signal while performing main scanning and sub-scanning. The image data is sent to the band compression/expansion section 27, and in the band compression/expansion section 27, if white or black in the image data is continuous, the data is compressed according to a certain rule to reduce the amount of data to be transmitted. .

[0037] Thereafter, the compressed image data is sent to the modulation/demodulation section 25, where it is modulated to superimpose the data signal on a carrier wave, and the modulated transmission signal is further FM-modulated at the image transmission section 21, and is then used for wireless communication. is sent to the line connection section 1 via the antenna 26.

The line connection unit 1 receives an image signal sent from the facsimile main unit 2 side using the image receiving unit 12, sends it to the line via the line circuit 15, and transmits the image signal to the other party's facsimile machine. do. Then, the control processing section 10
transmits an EOP signal (procedure end signal) to the other party's facsimile machine via the line circuit 15 when the sending of the image signal is completed, and when the MCF signal (confirmation signal) is input from the other party's side, a DCN signal (disconnection command) is sent to the other party's facsimile machine. signal) and completes the transmission process.

On the other hand, when a bell signal is sent from an external facsimile machine, it is received by the bell receiving circuit 14, and the control processing section 10 of the line connection section 1 sends a CED signal ( response signal) and a DIS signal (identification signal). In response, D
When the TCF signal is sent together with the CS signal, the control processing unit 10 sends out a CFR signal (reception preparation confirmation signal) via the line circuit 15.

When an image signal is sent from the other party, the control processing section 10 wirelessly transmits the image signal to the facsimile main body section 2 through the image transmitting section 11, and the facsimile main body section 2 receives the image signal. However, the image receiving section 22
The image data is then sent to the modulation/demodulation section 25 and demodulated, and then expanded in the band compression/expansion section 27, and then sent to the printer section 28, where the image is printed out.

[0041]

As explained above, according to the cordless facsimile apparatus of the present invention, a line connection section connected to a line and a facsimile body section equipped with an image reading section and a printer section can be wirelessly connected. Since the facsimile machine is connected and configured to send and receive image signals and data signals to and from each other via wireless communication, it is possible to place the facsimile machine at any location away from the line terminal and send or receive documents, etc. You can conveniently send and receive faxes from the same location where you do your desk work. Furthermore, when multiple facsimile machines are installed in a large office, etc., the facsimile machines can be used efficiently on each desk without the need for detailed wiring of facsimile lines within the office room.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a line connection section in a cordless facsimile machine according to an embodiment of the present invention.

FIG. 2 is a block diagram of the facsimile main body.

[Explanation of symbols]

1-line connection; 2-Facsimile main body; 10-control processing unit; 11-image transmitter, 12-image receiving unit; 15-line circuit; 20-system control unit; 21-image transmitter; 22-image receiving unit; 25-modulation/demodulation unit; 28-Printer section, 29-Image reading unit.

Claims (1)

[Claims] Claim 1: A line circuit that transmits and receives signals to and from the line as well as opens and closes the line, and an image transmitter that modulates image signals, data signals, etc. sent from the line circuit and sends them to an antenna. , an image receiving section that demodulates the image signal, data signal, etc. received by the antenna and sends it to the line circuit, and inputs various signals sent from the line and sends a response signal to the signal via the line circuit. a control processing unit that controls the transmission of the image signal; a line connection unit that receives and demodulates the image signal and data signal sent from the line connection unit via an antenna; an image transmitter that modulates a data signal and transmits it via the antenna;
A modulation/demodulation section demodulates the image signal from the image reception section to create image data, inputs and modulates the band-compressed transmission image data, and generates an image signal by optically scanning the image to be transmitted. an image reading section that receives and prints image data demodulated and band-expanded by the modulation/demodulation section, the image transmission section, the image reception section, the modulation/demodulation section;
a facsimile body including a system control unit that controls each operation of the printer unit and the image reading unit, and transmits image signals and data signals wirelessly between the line connection unit and the facsimile body. A cordless facsimile machine configured to receive data.