JPH0683353B2 - Equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus capable of performing both GIII standard facsimile transmission using a general telephone line and GIV standard facsimile transmission using a digital line.

[Prior Art] DDX (Digital Data Exchange Network) and INS (Inte
CCIT can be applied when performing facsimile transmission over a digital line such as a grated network system).
The GIV standard is being considered in T.

Therefore, a communication control unit for connecting to a conventional telephone line to perform facsimile transmission according to the GIII standard, and a communication control for connecting to the above digital line to perform facsimile transmission according to the GIV standard, in one facsimile device. It is conceivable to configure a facsimile machine by arranging the above, and sharing the above two lines.

Therefore, when transmitting with such a facsimile device, it is necessary to select the above-mentioned line side used by the destination facsimile device and perform a predetermined calling operation.

However, the operator may not be able to distinguish the line used by the destination facsimile machine only by looking at the destination call number.

However, the same call number is not given to the two circuit networks. Therefore, in this case, first, the call operation is performed on one line, and when the call cannot be made, the call operation is performed on the other line.

As described above, when the facsimile apparatus is shared by the telephone line network and the digital line network, there is a problem that the calling operation is troublesome unless the line used at the destination is known.

[Object] It is an object of the present invention to solve the above problems and to provide a facsimile apparatus that does not require any trouble in the operation at the time of transmission when performing facsimile communication by both a telephone line and a digital line.

[Structure] Therefore, the present invention relates to a telephone line and a digital line,
In accordance with the CCITT recommendation GIII standard and GIV standard, communication control units that execute predetermined transmission control procedures are provided respectively, and at the time of transmission, the destination number is first sent to the digital line to perform the calling operation, and the digital line is connected. When a response signal indicating "unrecognized destination" is returned from the switching center, the destination number is sent to the telephone line to perform a calling operation.

Examples of the present invention will be described below.

FIG. 1 is a block diagram of a facsimile apparatus according to an embodiment of the present invention. In the figure, the system control unit 1
Is composed of a microcomputer system and controls and controls the entire facsimile apparatus. The image memory 2 is a large-capacity memory that temporarily stores image information at the time of storing and transmitting the image information or in the confidential reception mode.

The operation display unit 3 is provided with various operation buttons, a ten-key pad, a display, etc., and is used by an operator to arbitrarily operate the facsimile machine and to display a message or the like from the facsimile machine to the operator.

The scanner 4 decomposes a transmission document into pixels with a predetermined resolution (for example, 8 dots / mm in the main scanning direction and 7.7 lines / mm in the sub scanning direction), and converts each pixel into an image signal. The plotter 5 records an image on a recording sheet at the same resolution as the scanner 4 and outputs the image. The encoding / decoding unit 6 encodes the image information to be transmitted by a predetermined method to compress the amount of the information and restores the encoded received image information to the original image information.

The communication control unit 7 executes a predetermined transmission control procedure according to the GIII standard to perform facsimile transmission, and is connected to a telephone line via a modem 8 for modulating a transmission signal and demodulating a reception signal and a network control device 9. Has been done. The communication control unit 10 executes a predetermined transmission procedure according to the GIV standard to perform facsimile transmission.
It is connected to a digital line network such as DDX via.

The switching unit 12 switches between the communication control units 7 and 10 which perform the transmission control. Further, a GIII standard facsimile machine 13 and a GIV standard facsimile machine 14 as transmission destinations are connected to the telephone line network and the digital line network, respectively.

The facsimile apparatus according to this embodiment has the above-described configuration, and the transmission process is executed as shown in FIG. That is, the transmission original is set on the scanner 4, the destination number is input by the ten keys of the operation display unit 3, and the start button is pressed (Process 2
1). As a result, the system control unit 1 switches the switching unit 12 to the communication control unit 10 side and transfers the input destination number data to the network control device 11 via the communication control unit 10.
Next, the network control device 11 sends the above number to the digital line and executes the calling operation (process 22).

In digital circuits such as DDX and INS, when the destination number is sent in the calling process, the exchange side sends back a response signal indicating the recognition result for the number. Then, the response signal is discriminated, and if "recognition OK" is indicated (Y in processing 23), the line is connected to the transmission destination and the response signal of the incoming call is returned from the destination facsimile machine. become. The communication control unit 10 receives this response signal and executes a predetermined transmission control procedure. Next, the system control unit 1 activates the scanner 4, encodes the read image signal by the encoding / decoding unit 6, and sequentially transfers it to the communication control unit 10. The communication control unit 10 sends this image signal to the digital line (process 24). When the transmission of this image signal is completed, the line is restored in a predetermined procedure and the transmission process is completed (process 25).

On the other hand, the corresponding destination (subscriber) in the calling process
If a called station that does not exist is sent, the exchange sends back a response signal indicating "unrecognizable" (N in process 23). This makes it possible to determine that the destination facsimile machine is not using the digital line. Therefore, the system control unit 1 switches the switching unit 12 to the communication control unit 7 side and transfers the destination number to the network control device 9 via the communication control unit 7. Next, the network control device 9 sends the above number to the telephone line to execute the calling operation (process 26).

When the communication destination arrives (Y in process 27), the communication control unit 7 executes a predetermined transmission control procedure, and the system control unit 1 reads the encoded image signal from the scanner 4 and codes the image signal as in the above. Transfer to 7. The communication control unit 7 modulates the image signal by the modem 8 and sends it to the telephone line (Processing 2
8).

When the transmission of this image signal is completed, the line is restored in a predetermined procedure to complete the transmission process (process 25). On the other hand, in the calling operation, when the line busy or the ringing tone is not detected, or when the predetermined response signal is not returned after the incoming call to the destination (Y in process 27), the system control unit 1 informs the operation display unit 3 to that effect. An error display is displayed (process 29). If the destination number entered first is incorrect, the ringing tone will not be detected.
The error can be known from the display.

As described above, the facsimile apparatus according to the present embodiment is connected to the telephone line and executes the transmission procedure according to the GIII standard. The communication control unit 7, the modem 8 and the network control apparatus 9 are connected to the digital line to perform the transmission according to the GIV standard. A communication control unit 10 and a network control device 11 for executing the procedure are provided. Then, the calling process at the time of transmission is first executed for the digital line side according to the input destination number.

By the way, if the calling process is executed for the telephone line and the number is not for the telephone line, the telephone station gives a voice response as a response indicating an error of the number. It is difficult for the voice to be detected by the communication control unit 7 or the like, and the response is slow.

On the other hand, by doing the above, it is possible to easily and quickly determine whether or not the number is the number used in the digital line, by the response signal from the exchange of the digital line.

When it is determined that the number is not one used in the digital line network, the telephone line is switched to call.

Therefore, it is not necessary to select the above-mentioned line of the transmission destination at each transmission, and the calling operation is simplified. In particular,
If you do not know the destination of the above line, try calling one as before, and if you cannot communicate, you do not have to repeat the same operation such as calling the other again. It takes less time. In this embodiment, the digital line side is called first, but the analog line side may be called first to determine the presence or absence of a response from the destination, and the same construction can be made.

Now, another embodiment of the facsimile apparatus of the present invention will be described. The facsimile apparatus of this embodiment has the same configuration as the block diagram shown in FIG. The operation display unit 3 is provided with a ten-key pad and a one-touch dial key, and the destination number can be registered in the speed dial or the one-touch key. Further, it is possible to temporarily store the transmission image signal in the image memory 2 and sequentially perform the broadcast transmission to the designated destination.

To register the speed dial, as shown in FIG. 3 (a), the destination number is input corresponding to the two-digit speed dial number, and the one-touch dial is registered to the destination corresponding to each one-touch key. Enter the number. Here, when the destination facsimile machine uses a subscriber telephone network, the destination number is directly input,
When the destination facsimile machine uses the digital line network, the above number is input after the header "##". The system control unit 1 fetches the input destination number from the operation display unit 3 and creates a destination number table as shown in FIGS. 3A and 3B in the RAM inside the system control unit 1. And remember.

The transmission process is performed as shown in FIG. That is, the destination is designated by the speed dial or the one-touch key. The system control unit 1 sequentially stores each designated transmission destination in the internal RAM (process 31). Next, when the activation operation is performed, the system control unit 1 activates the scanner 4,
The read image signal is stored in the image memory 3 (Process 3
2).

Next, the system control unit 1 reads the stored transmission destination, compares it with the transmission destination number table, and reads the corresponding transmission destination number (process 33). Next, it is determined whether or not the header "##" is present at the beginning of the read destination number (process 34). Here, when there is no header "##" (N in process 34), the switching unit 12 is switched to the communication control unit 7 side,
The calling process is performed on the telephone line by a predetermined procedure according to the GIII standard (process 35). Next, the image signal stored in the image memory 2 is encoded by the encoding / decoding unit 6 and the transmission process is performed in a predetermined procedure according to the GIII standard (process 36).

When the processing for the destination is completed, it is determined whether or not there is a next designated destination (step 37), and if there is the destination, the process returns to step 33 and the above process is repeated (step 37). Y). When the next destination is not designated, the transmission process is terminated (N in process 37).

On the other hand, when there is a header “##” in the process 34 (process
Y of 34), the switching unit 12 is switched to the communication control unit 10 side, and the calling process is performed on the digital line by a predetermined procedure according to the GIV standard (process 38).

Then, similarly to the above, the stored image signal is transmitted in a predetermined procedure according to the GIV standard (processing 39). After that, the process 37 is entered.

As described above, in the present embodiment, when the destination number of the speed dial or the one-touch dial is registered, if the destination facsimile machine uses the digital line, the header "## I am going to register with ". In the transmission process, the switching unit 12 is controlled depending on the presence or absence of the header “##”, and the transmission process according to the GIII standard is performed on the subscriber telephone line or the GIV standard is performed on the digital line. The transmission process is switched.

As a result, the operator does not need to distinguish the lines of the transmission destination at the time of transmission, and only the transmission destination needs to be specified, so that the operation is simplified.

Although the header is set to "##" in the above embodiment, the number of characters and its type can be set arbitrarily. Also, the telephone line side
Not only the GIII standard but also the GI and GII standards and mini-fax may be supported.

[Effect] As described above, according to the present invention, a communication control unit that executes a predetermined transmission procedure according to the GIII standard and the GIV standard is provided for a telephone line and a digital line, respectively, and a calling process at the time of transmission is performed. According to the input destination number, the digital line side first calls, and when the number is not recognized by the digital line exchange, the telephone line is switched to the call. It is possible to easily and quickly determine which line the line belongs to, and it is not necessary to specify the line distinction of the transmission destination at the time of transmission, and the operation is easy even if the line distinction is not known.

[Brief description of drawings]

FIG. 1 is a block diagram of a facsimile apparatus according to an embodiment of the present invention, FIG. 2 is a flow chart showing its transmission processing, and FIGS. An explanatory view showing a dial table and a one-touch dial table, and FIG. 7C is a flow chart showing a transmission process in the embodiment. 1 ... System control unit, 2 ... Image memory, 3 ... Operation display unit, 4 ... Scanner, 5 ... Plotter, 6 ... Encoding / decoding unit, 7,10 ... Communication control unit, 8 ... … Modem, 9,11
...... Network control device, 12 ...... Switching unit, 13,14 ...... Facsimile device.

Claims (1)

[Claims] 1. An image signal processing unit for processing an image signal read from an original, and an analog line communication control for executing a predetermined transmission control procedure in conformity with the GIII standard by CCITT recommendation and transmitting and receiving a facsimile signal to a telephone line. Section, a digital line communication control section that executes a predetermined transmission control procedure in accordance with the GIV standard according to the above recommendation, and sends and receives a facsimile signal to a digital line, and a switching section that selects one of the two communication control sections. , And an operation unit for designating a destination, and when the destination number is sent to the digital line to perform a calling operation, a response signal indicating “destination unrecognized” is issued from the switching center of the digital line. When returned, the switching unit switches to the analog line communication control side, and the communication control unit sends the destination number to the telephone line to perform a calling operation. Facsimile device according to claim.