JPS63234665A - Facsimile equipment for wired and radio line in common - Google Patents

Abstract

PURPOSE:To use one set of a facsimile equipment for both the wire and radio system by designing a prescribed transmission control procedure to be executed respectively to the telephone line and the radio line and switching the connection of the device to the line to be used. CONSTITUTION:An NCU 2 connected to the telephone line and an interface device 3 connected to the radio equipment 4 are connected to a facsimile equip ment 1. While the call from the telephone line or the call from the radio equip ment 4 is discriminated depending on an off-hook signal OFH, an incoming detection signal RDT of the NCU 2 and an individual reception signal RCV of the radio equipment 4 are used at the reception to discriminate which side has a call and a prescribed equipment is selected and a prescribed transmission control procedure is executed respectively to send a picture. In case of the reception at the caller station, a reception button is depressed to apply discrimi nation by using the off-hook signal OFH. Thus, one set of facsimile equipment 1 is used in common for the wired system and the radio system.

Description

[Detailed description of the invention] [Technical field] The present invention relates to a facsimile device.

[Prior Art] In contrast to normal wired facsimile devices that use telephone lines as data transmission lines, wireless facsimile devices that use wireless lines using wireless devices, such as in-vehicle facsimile devices, are known.

Generally, wired facsimile machines transmit images using standard transmission procedures and transmission modes that comply with CCITT recommendations, but wireless facsimile machines are set by each manufacturer to deal with transmission errors that occur frequently. In many cases, non-standard transmission procedures and procedure signals are used, and it is necessary to control the switching of the transmission and reception status of the wireless device.

Therefore, in the past, there was a problem that the two types were not compatible, and one facsimile machine could not be used both as a wired type and a wireless type.

[Objective] An object of the present invention is to provide a facsimile device that can be used both as a wired type and a wireless type.

[Structure] 戊] For this reason, the present invention provides transmission control means that executes predetermined transmission control procedures for each of the telephone line and wireless line, and a switching means that switches the connection of the device on the line side to be used. This is what I did.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram of a facsimile system according to an embodiment of the present invention.

In the figure, a facsimile machine 1 is connected to a telephone line via an NCU (network control unit) 2.

It is connected via an interface device 3 to a wireless device 4 for transmitting data. The NCU 2 is a manual originating/automatic receiving connection type (MA type) NCU, and a telephone 5 is connected thereto. In addition, the interface device 3
is equipped with a micro for communicating with the other party's wireless station, and the interface device 3 connects the facsimile device 1 and the micro to the wireless bag N4 by switching between them.

In the facsimile machine 1, the scanner 11 reads an image of a transmitted document at a predetermined resolution, and the plotter I2 records and outputs a received image at a predetermined resolution.

The operation display section 13 is made up of a display with a large degree of display flexibility for displaying various operation keys and operation guidance information, etc., and is used by an operator to operate this facsimile machine. Reference numeral 14 has a function of encoding and compressing one image data and a function of decoding the encoded and compressed image data into the original image data.

In the case of wired communication using a telephone line, the communication control unit 15 executes a transmission control procedure in accordance with CCITT Recommendations T and 30, while in the case of wireless communication by the wireless device 4, it executes other transmission control procedures to be described later. and transmits images to the other station.

The modem 16 has a low-speed modem function for transmitting transmission procedure data and a high-speed modem function for transmitting image information data, and these functions are switched by the communication control section 15. As a low-speed modem function, for example, a 300 bps modem according to CCITT Recommendation V', 21 can be used, and as a high-speed modem function, for example, CCITT Recommendation V', 21 can be used.
CITT Recommendation V, 27ter, 4800 bps can be used. However, when transmitting images via wireless communication, the high-speed modem function functions at only one transmission speed and does not fall back to a lower transmission speed.

The switching circuit 17 switches the connection of the modem 16 between the NCu 2 side and the interface device 3 side. The system control unit 18 detects an incoming call to the telephone line side or the wireless device 4 side, and switches the switch circuit 17.

By switching the transmitting/receiving state to the wireless device 4, controlling the above-mentioned parts, etc., a predetermined image transmission is executed by wire or wirelessly.

For this control, the system control unit 18 includes NCL1
Incoming call detection signal R that turns on when receiving a call from the telephone line from 2
DT and an off-hook signal 0FII that is turned on when the NCLI 2 is making a call, and an individual reception signal RCV that is turned on when the radio device 4 is called is input from the interface device 3.

Further, a transmission instruction signal TRS that is turned on during data transmission is output from the system control unit 18 to the interface device 3.

A case will be described in which images are transmitted between the wired and wireless facsimile machines of this embodiment with the above configuration. First, when transmitting an image via a telephone line, the operator of the transmission station TX sets a transmission document on the scanner 11 (21) as shown in FIG. The user dials the telephone number and performs a call operation (process 22). When the facsimile machine of the partner station RX responds, the send button on the operation display section 13 is pressed (process 23).

When the handset is picked up, the off-hook signal OFI+ input from the NCU 2 to the system control unit 18 is turned on. (24)) While switching the switching circuit 17 to the a side, the communication control unit 15 is controlled to execute a transmission control procedure conforming to CCITT Recommendations T and 30 and the GIIT standard.

On the other hand, at this time, the facsimile machine 1 of the receiving station RX is initially in a standby state. In this case, system control unit 1
8, as shown in FIG. 3, detecting an incoming call on the radio line side using the individual reception signal RCV from the interface device 3 (processing 31), and detecting an incoming call on the telephone line side using the incoming call detection signal RDT from the NCU 2 (processing 32). and the operation display section 13
Detection of reception button press (process 33) is repeatedly executed (from process 31 N to process 32) Process 32 N
More processing 33. (Proceed to process 31 from N in process 33).

Here, when a call is issued from the transmitting station TX, the NCU 2 receives the call and the incoming call detection signal RDT is turned on. When the system control unit 18 determines that the signal 1DT is on, it controls the communication control unit 15 to execute a transmission control procedure in accordance with CCITT Recommendations T, 30 and the Gull standard.

As a result, as shown in FIG. 4, image information is transmitted between the transmitting station TX and the receiving station RX according to a well-known transmission control procedure based on the CCITT recommendations. That is, the receiving station RX sends out a CHD signal and a DIS signal.

Notify the functions of the own device. After receiving this, the transmitting station TX sends out a DC5 signal to instruct the transmission mode, and subsequently sends out a signal for modem training.

After the receiving station RX receives this and determines the internal state,
Upon receiving this, the transmitting station TX that sends out the CFR signal indicating receivability reads out the image information using the scanner 11,
The image information is encoded by encoding/decoding 14, modulated by modem 16, and transmitted. When the sending of the image information is finished, an EOM signal indicating the end is sent.

The receiving station RX demodulates the image information using the modem 16,
It is decoded by the encoder/decoder 14 and printed on recording paper by the plotter 12! Record. Then, the MC indicates that the reception is OK.
Sends F signal. When the transmitting station TX receives this signal, it sends out a DCN signal indicating line disconnection and ends the transmitting process (above, process 25 in FIG. 2), while the receiving station RX receives this signal and starts the receiving process. The process ends (this is the process 34 in FIG. 2).

Next, when transmitting an image using the wireless device 4, the transmitting station TX
After the operator sets the original (Fig. 2, process 21)
, switches from the micro side of the interface device 3 to the facsimile device 1 side, and individually calls the desired receiving station RX by operating the wireless device 4 (processing 22).
Press the send button on the facsimile machine (process 23)
).

With this individual calling operation, the wireless line 4' is connected to the receiving station RX.
Send a specific tone signal corresponding to the In addition, the system control unit 18 receives an off-hook signal 0F from the NCU 2)
Since I is turned off (N in process 24), the switching circuit 17
is switched to side b, while controlling the communication control unit 15 to execute a non-standard transmission control procedure to be described later.

At the receiving station RX, the wireless line 4 receives the tone signal, and the system controller 18 receives the tone signal via the interface device 3.
Turn on the individual reception signal RCV output to. When the system control unit 18 detects that the individual reception signal RCV is turned on (FIG. 3, process 31, ■), it switches the switching circuit 17 to the b side, while controlling the first communication control unit 15 according to the non-standard transmission control procedure described below. to be executed.

In this non-standard transmission procedure, the transmitting station TX and the receiving station RX
There are five types of procedure signals PS to be transmitted between: PSa=PSf. As shown in FIG. 5(a), this procedure signal PS is one in which, for example, 8-bit command data CM indicating information content is repeatedly and continuously transmitted for a certain period of time TI of about 1 second.

The communication control unit 15 of the receiving station RX first sends out a procedure signal PSa, as shown in FIG. 2(b). In this procedure signal PSa, command data CM indicating the recording paper size of the own apparatus, etc. is set, and information corresponding to the DIS signal in FIG. 4 is transmitted.

At this time, since the transmitting station TX is also set to a non-standard procedure, if the command data CM that is repeatedly transmitted over a certain period of time T1 is received and the same data is not received each time, The content is determined by majority decision. This process is to prevent malfunction even if a transmission error occurs in an unstable wireless line in one communication state, and each subsequent procedure signal PSb-PSf
This determination is made on the receiving side.

Then, the transmitting station TX sends out a procedure signal PSb.

In this procedure signal PSb, command data CM corresponding to the DCS signal is transmitted. Then, for modem training, a fixed signal indicating 1111+ or 1101+ is sent out for a certain period of time.

After executing the modem training, the receiving station RX sends out a procedure signal PSc corresponding to the CFR signal.

Thereafter, the transmitting station TX transmits image information in the same procedure as in the case of FIG. In this case, similarly to the above, in order to reduce the influence of transmission errors, the image information is transmitted without being encoded, and the receiving station RX also performs corresponding processing.

A procedure signal P corresponding to the IEOM signal at the end of the image information
Send Sd. The receiving station RX returns a procedure signal PSe corresponding to the MCF signal, and in response, transmits a procedure signal PSf corresponding to the DCN signal to complete the transmission process (the above is the process 26 in Fig. 2 and the process 26 in Fig. 3). Processing 35).

On the other hand, it is also possible to make a call from the NCU 2 or to call a partner station using the wireless device 4, and one calling party can receive an image from the partner station. In this case, the operator calls the other station and notifies the operator of the other station to press the send button on the facsimile machine 1, and then presses the receive button on the own device.

The system control unit 18 detects the depression of the reception button (V in process 33 in FIG. 3) and determines the off-hook signal OFH (process 36). Here, when the off-hook signal 0F)l is on (Y in process 36), the telephone line side executes the reception process according to the standard transmission control procedure (process 34), while when the off-hook signal OFH is off (process 36) N), the wireless device 4 side performs reception processing using a non-standard transmission control procedure (processing 3
5).

As described above, according to this embodiment, the NCU 2 connected to the telephone line and the interface device 3 connected to the wireless device 4 are connected to the facsimile device 1. At the time of transmission, it is determined whether the call from the telephone line side is the call from the wireless device 4 side based on the state of the off-hook signal 0F11, while at the time of reception, it is determined which side is calling from the incoming call detection signal RDT of the NCU 2 and the individual reception signal RCV of the wireless device 4. It is determined whether the image is being received, the device is switched to a predetermined device, and a predetermined transmission control procedure is executed to perform image transmission. Also.

At the time of reception on the calling station side, the above determination is made based on the off-hook signal OFH after the reception button is pressed.

As a result, one facsimile machine 1 can be used both as a wired type and a wireless type, and the switching control is automatically performed, making handling operations easier.

In the above embodiments, the procedure signals are different between the telephone line and the wireless line, but the same procedure signal may be used to execute the respective predetermined transmission control procedures.

[Effects] As described above, according to the present invention, predetermined transmission control procedures can be executed for each of the telephone line and the wireless line, and the connection of the device can be switched to the line side to be used. One facsimile machine can now be used for both wired and wireless facsimile systems.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a facsimile system according to an embodiment of the present invention, FIG. 2 is a flowchart showing the sending process of the facsimile system, FIG. 3 is a flowchart showing the receiving process of the facsimile system, and FIG.
The figure is an explanatory diagram of the transmission control procedure when transmitting an image over a telephone line, Figure 5 (a) is an explanatory diagram showing the signal format of the procedure signal, and Figure 5 (b) is an explanatory diagram of the transmission control procedure when transmitting an image over a wireless line. It is an explanatory diagram. l...Facsimile device, 2...NCυ, 3...
Interface device, 4... Wireless device, 5... Telephone, 6... Microphone, 11... Scanner, 12...
- Plotter, 13... Operation display section, 14... Code 1
15... Communication control unit, 16... Modem, 17... Switching circuit, 18... System control unit. / ・ Figure 2 Figure 3 Figure 4 (b) TX RX PSa (DIS) PSb (DC5) Motortrainer PSc (CFR)

Claims (2)

[Claims] (1) An image signal processing means for processing image signals read from a document, a wired transmission control means for transmitting and receiving facsimile signals by executing a predetermined transmission control procedure on a telephone line, and a wireless device formed by a wireless device. a wireless side transmission control means for transmitting and receiving facsimile signals by executing a predetermined transmission control procedure on the line; and a switching means for switching the facsimile device between the telephone line side and the wireless line side depending on the line to be used. A facsimile device for both wired and wireless use. (2) In claim 1, the switching means switches to the receiving line when a call is received, and determines the state of the network control device that performs the call operation on the telephone line when making a call. , a wired/wireless facsimile device characterized in that when the network control device has captured the telephone line, it switches to the telephone line side, and when it has not captured the telephone line, it switches to the wireless line side.