JPH03117266A - Facsimile equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] An object of the present invention is to provide a facsimile device that is capable of communicating with other devices using a plurality of different protocols, and which does not require consideration of the communication capabilities of the other devices. A facsimile machine having a plurality of transmission control means that performs transmission control with a line network using a protocol, a means for switching connections between the line network and the plurality of transmission control means, and a means for switching connections from the line network in response to a call setup request. means for detecting a setting abnormality signal; and a line network connected to a specific transmission control means among the plurality of transmission control means at the start of communication, and switching to another transmission control means based on detection by the detection means. The switching means is configured to be controlled.

[Industrial application field]

The present invention relates to a facsimile device (hereinafter referred to as FAX) that can communicate with other devices using a plurality of different protocols.

In recent years, with the automation of offices, document communication by facsimile has been increasingly used in a wide range of fields. Currently, C.C.
Group 3 equipment (called G31) based on the rTT standard is widespread, but ISDNH (Integrated
5 services Digital Network)
Group 4, where communication charges are expected to decrease with the expansion of
The equipment (referred to as 04 machines) is expected to spread significantly.

Therefore, FAX machines that have both functions and can be connected to G3 and 04 machines are in practical use. However, even though both the 03 and 04 aircraft have the same address system,
Because the protocols are different, for facsimile machines equipped with both G3a and G4 functions, the operator must know in advance whether the communication partner is a G3 or G4 machine (hereinafter referred to as the model) and follow this information when making a call. However, such identification operations place an unnecessary burden on the operator. Therefore, a facsimile machine that is easy for an operator to operate is desired.

[Conventional technology]

With conventional facsimile machines, the operator manually specifies the model of the other party's device in addition to inputting the destination phone number when sending, or, with devices that have one-touch or abbreviated phone number functions, the operator manually specifies the model for each phone number. I registered it in my phone number memory and read it out when I sent it and specified it automatically.

[Problem to be solved by the invention]

As mentioned above, according to the conventional method, manually specifying (■) is time-consuming and troublesome, and if you forget to specify it, a communication error will occur and you will have to repeat the operation. In addition, if you want to automatically specify ■, use a device with one-touch or shortened phone number function,
There was a problem that this method could only be applied if the model information had already been registered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a facsimile machine that does not require consideration of the model of the communicating party.

(Means for solving problems) FIG. 1 shows a block diagram of the principle of the present invention.

In the figure, 1.2 is a plurality of transmission control means that control the line network and transmission using different protocols, 3 is a means for switching connections between the line network and the plurality of transmission control means 1.2, and 4 is a call setting. means for detecting a call setup abnormality signal from the line network in response to a request; This means controls the switching means 3 to switch to another transmission control means 2 based on the transmission control means 2.

[Effect]

According to the present invention, in a facsimile machine having a plurality of transmission control means 1.2 that perform transmission control with a line network using different protocols, the detection means 4 detects a call setup abnormal signal from the line network in response to a call setup request. , the control means 5 controls the switching means 3 to connect the line network to a specific transmission control means 1 among the plurality of transmission control means 1.2 at the start of communication,
Since the transmission control means 2 is switched to another transmission control means 2 based on the detection by the detection means 4, it is possible to perform communication without specifying the protocol of the communication partner device.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to a block diagram shown in FIG. 2 showing a main part configuration of an embodiment of the present invention. The same reference numerals indicate the same objects throughout the figures.

Components in FIG. 2 that correspond to those in FIG. 1 are surrounded by dashed lines.

The figure shows the main configuration of a FAX that has both G3 and C4 functions and performs facsimile communication with a G3 or G4 machine via the 15DN network.

The main control unit IO includes a read-only memory (RO
A microprocessor is operated according to a control program stored in M), and each part is controlled to perform the functions of the facsimile machine.

The operation display unit 11 includes a send button and a receive button for performing facsimile transmission/reception operations, a keyboard having a numeric keypad for inputting the telephone number of the destination station, and a display for displaying communication status and input data.

The reading unit 12 reads a document with an image sensor, converts it into image data, and inputs the image data.

The recording unit 13 records characters and figures on recording paper according to the input image data.

The destination memo January 5 stores the telephone number (terminal number in the ISDN network) input from the operation display section 11, the abbreviated telephone number, or the telephone number corresponding to the one-touch key.

The image memo January 4 stores transmitted or received image data in pixel-to-bit correspondence.

The image processing unit 16 stores the image data input from the reading unit 12 in the image memory 14 in pixel-to-bit correspondence, compresses and encodes both data in the image memo 4 at the time of transmission, and outputs the compressed and encoded data to the switching unit 3a. do. Also, the encoded image data received from the line network by the switching unit 3a is restored to a bit string in pixel units and stored in the image memo 4, and when recording, the image data is read from the image memory 14 and recorded. output to section 13.

The G3 protocol unit 2a uses the well-known CCITT Recommendation T, 30 G3 standard protocol (Third
According to the G3 procedure in Figure (a), dial the telephone number in the destination memory 15, set/release the call, establish/
It controls cutting, etc., and sends and receives control data and image data.

The G4 protocol section 1a dials the telephone number in the destination memo January 5, and makes a call, in accordance with the well-known CCITT recommendation G4 class 1 standard protocol (G4 procedure of Figure 3). Setting/opening, line establishment/
It controls cutting, etc., and sends and receives control data and image data.

The switching unit 3a performs connection switching between the line network and the G4 protocol unit 1a or the G3 protocol unit 2a under the control of the switching control unit 5a.

In the call setup sequence of the 15DN communication procedure performed by the G4 protocol section 1a with the line network, the detection section 4a performs a breather when it receives a disconnection signal indicating that the terminal type is different after receiving the call setup acceptance signal. . That is, the connection with the line network is connected to the G4 protocol section 1a at the start of transmission, and the detection section 4a detects a call setting error.For example, when transmitting a document, the image data read from the document by the reading section 12 is subjected to image processing. The image memo is stored in the image memo January 4 by the unit 16. Under the control of the switching control section 5a, the switching section 3a is initially set to G.
The G4 protocol unit 1a is connected to the line network, and the G4 protocol unit 1a executes a call setting sequence for the line network.

If the detection unit 4a does not detect any call setting abnormality, it indicates that the destination device is 04, communication is performed according to the G4 protocol, and the data in the image memory 14 is compressed and encoded by the image processing unit 16. The image data is sent from the G4 protocol section 1a to the line network. Detection part 4
If a detects a call setup abnormality, it indicates that the destination device is 03, and the switching control unit 5a switches the switching unit 3a to connect the line network to the G3 protocol unit 2a, and the modem is connected by the G3 protocol unit 2a. It is configured to communicate with the 15DN network via M.

〔Effect of the invention〕

As explained above, according to the present invention, for a communication partner device whose protocol is unknown, for example, whether it is a G3 machine or a 04 machine,
Communication is initially started using the G4 protocol, and when it is determined that the other device is a 03 device during the transmission procedure, the communication is switched to the G3 protocol, so the operator does not need to register the model of the other device. There is no need to specify the model, and the operation is extremely easy.

[Brief explanation of drawings]

Figure 1 is a block diagram of the principle of the present invention, Figure 2 is a block diagram showing an embodiment of the present invention, and Figure 3 is a block diagram of the principle of the present invention.
3104 procedure diagram. In the figure, 1 and 2 are transmission control means, 1a is G4 protocol section, 2a is G3 protocol section, 3 is switching means, 3a is switching section, 4 is → mountain means, 4a is detection section, 5 is control means, 5a is a switching control section, IO is a main control section, 11 is an operation display section, 12 is a reading section, 13 is a recording section, 14 is an image memory, 15 is a destination memory, and 16 is an image processing section. broom drawing

Claims (1)

[Scope of Claims] A facsimile machine having a plurality of transmission control means (1, 2) that perform transmission control with a line network using different protocols, the line network and the plurality of transmission control means (1, 2) means (3) for switching the connection between the lines; means (4) for detecting a call setting abnormal signal from the line network in response to a call setting request;
) for controlling the switching means (3) to switch to another transmission control means (2) based on the detection by the detection means (4); 5)
A facsimile device comprising: