JP2001016377A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable all telephone circuits to attain the facsimile reception without rejecting simultaneously their facsimile reception of image data by storing the class information on a receiving circuit in a management table of an image memory, when the received image data are received via a common image memory receiving tube. SOLUTION: The sub-control parts 20 and 30 detect the incoming calls of circuits B and C and write the image write request commands into a dual-port RAM 21 and 31, together with the circuit class and the page numbers. The parts 20 and 30 also read the communication numbers out of the data stored in the RAM 21 and 31 and discriminate whether an image memory 15 has an idle area, i.e., whether the communication number that is assigned by a main control part 10 is 0. The NSF and DIS are transmitted in a facsimile communication procedure and a start command is written, if the communication class data are stored in the received NSS. Then the received image data are encoded and stored in the RAM 21 and 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a communication terminal device which connects a plurality of telephone lines to enable simultaneous communication on each telephone line.

[0002]

2. Description of the Related Art Conventionally, a plurality of telephone lines are connected,
Communication terminal devices, such as multi-line facsimile devices, that enable simultaneous communication on each telephone line, have become widespread.

[0003] In such a communication terminal device, for example, when two telephone lines are connected, the facsimile transmission is performed using one of the telephone lines by utilizing the memory transmission or memory reception function. Facsimile reception can be performed from the other line, and facsimile reception or facsimile transmission can be simultaneously performed on both telephone lines in parallel.

Further, such a communication terminal device converts image data received by facsimile via both telephone lines into communication types (remote communication, confidential communication, relay communication, etc.).
, And can be collectively stored in an image memory provided commonly to both telephone lines.

[0005]

By the way, in the above-mentioned conventional communication terminal device, when the image data received by facsimile is stored in the image memory in correspondence with the communication type, both the telephone lines are stored. When receiving the image data at the same time by facsimile, if the communication types of these image data to be received are the same, the facsimile reception of the image data on one of the telephone lines is refused and the connection of the line is cut off I was

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem. When image data is simultaneously received by a plurality of telephone lines by facsimile, even if the communication types of these image data to be received are the same, An object of the present invention is to provide a communication terminal device capable of performing facsimile reception on all telephone lines without rejecting facsimile reception on any telephone line.

[0007]

In order to achieve the above object, a communication terminal device according to a first aspect of the present invention has a plurality of encoding / decoding circuits and a plurality of communication terminals connected to a telephone line. In a communication terminal device configured by connecting a communication control unit to a facsimile main control unit having a common image memory via an interface, when a received image data is received by the common image memory, a reception line Is stored in a management table of the image memory and managed.

Here, as the identification information of the telephone line, the line name (for example, "line A",
"Line B"), a telephone number assigned to the telephone line, and the like.

In the communication terminal device according to the present invention, the interface is constituted by a dual-port RAM for simultaneously writing and reading data.

In the communication terminal device according to the third aspect, when a remote transmission command is received from any of the telephone lines, the facsimile main control unit refers to the management table of the image memory and designates the command by the command. The image data received on the telephone line is read out from a common image memory and transmitted remotely.

Here, the remote transmission command includes a command command for requesting the apparatus to transmit image data and a line designation command for designating which telephone line the image data has been received. Contains.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A communication terminal device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an example of the internal configuration of the communication terminal device of the present invention.

Here, the configuration of a multi-line facsimile apparatus F is shown as a communication terminal apparatus, in which three telephone lines are connected, but the present invention is not limited to this example. Alternatively, four or more lines may be connected.

In this multi-line facsimile apparatus F, a facsimile main controller 1 is provided for connecting the telephone line A, and communication controllers 2 and 3 are provided for connecting the telephone lines B and C. I have.

The facsimile main controller 1 is provided for controlling facsimile communication on the telephone line A.
The following components are controlled, and a main control unit 10 including a CPU and the like, and an operation unit 11 including various operation keys are provided.
A reading unit 12 for reading image data from a set document, a RAM 13 for storing abbreviated dialing numbers for facsimile communication on the telephone line A, and various types of data necessary for the operation of the facsimile main control unit 1. A ROM 14 for storing a program, an image memory 15 for storing image data, a recording unit 16 for recording image data on a preset recording sheet, a codec circuit 17 for encoding and decoding image data, 1 that modulates and demodulates various signals necessary for facsimile communication
8 and an NCU 19 that controls connection to the telephone line A.

The communication control unit 2 controls facsimile communication on the telephone line B. The communication control unit 2 controls a dual port RAM 21 constituting an interface for connecting to the facsimile main control unit 1 and the following units. A sub-control unit 20 composed of a CPU, etc .; a RAM 22 for storing abbreviated dial numbers for facsimile communication on the telephone line B; and a ROM 2 for storing various programs necessary for the operation of the communication control unit 2
3, a codec circuit 24 for encoding and decoding image data, a modem 25 for modulating and demodulating various signals necessary for facsimile communication, and an NCU 26 for controlling connection to the telephone line B.

The communication control unit 3 controls facsimile communication on the telephone line C in the same manner as the communication control unit 2, and a dual port RAM 31 constituting an interface for connecting to the communication control unit 2. When,
A sub-control unit 30 configured by a CPU or the like to control the following units, a RAM 32 for storing abbreviated dial numbers for facsimile communication on the telephone line C, and a communication control unit 3 required for operation. ROM 33 that stores various programs, a codec circuit 34 that encodes and decodes image data, a modem 35 that modulates and demodulates various signals necessary for facsimile communication, and an NCU 36 that controls connection to the telephone line C. And

The RAM 13 of the facsimile main control unit 1
A management table 13A as shown in FIG. 2 is provided. When image data is received by facsimile, the communication number of the image data received by facsimile is transmitted. , Communication type information, telephone line identification information (here, telephone line name), page number of the received image. The start address of the image memory 15 storing the received image is written.

In the facsimile apparatus F, when data is written in the dual port RAM 21, an operation as shown in the flowchart of FIG. 3 is performed.
The main controller 10 determines whether or not an image write request command has been written to the dual port RAM 21 (100).
It is determined whether or not there is remaining capacity in the image memory 15 (101).
If there is no remaining capacity of the communication No. 5, Is written to the dual port RAM 21 as "0" (114).

If there is remaining capacity in the image memory 15, (10
1) From the data written in the dual port RAM 21, the page number of the document (102),
If “0”, it is determined that new image data has been received and a new communication No. (103), otherwise, the communication No. written in the dual port RAM 21 is assigned. (106), and the assigned communication N
o. With the communication type information
After storing it in the communication No. 1 (104), the communication No. Is written to the dual port RAM 21 (105). As a result, the communication No. Is transmitted to the sub-control units 20 and 30 that output the image writing request command, as will be described later. With the communication No. Is sent to the main control unit 10 via the dual port RAMs 21 and 31.

When the main control unit 10 refers to the dual port RAM 21 (100), if a start command is written (107), it is determined whether or not communication type information is included in the start command (107). 108). When the communication type information is included, the communication type information is stored in the management table (109). Is stored (110), but when the communication type information is not included in the start command (108), if the facsimile apparatus sets the remote fax (11)
1) The remote facsimile flag is stored in the management table 13A (112). If not, it is regarded as normal facsimile reception, and the page No. is stored in the management table 13A. Is stored (110).

Further, when the main control unit 10 refers to the dual port RAM 21, an image write request command,
When neither of the start commands is included, the image data is read from the dual port RAM 21 and transferred to the image memory 15. If the transfer is the first time for the image data, the image data is read. The start address of the transferred image memory 15 is stored in the management table 13.
A is stored in A (113).

Next, the respective facsimile reception operations on the telephone lines A, B, and C will be described with reference to FIGS.

FIG. 4 is a flowchart showing an example of the operation of facsimile reception on the telephone line A,
When the main control unit 10 detects an incoming call on the line A (20
0), the line type (telephone line A) is written into the management table 13A (201). And assign
The data is written in the management table 13A (202).

Then, the main control unit 10 controls the NSF, D
After sending IS (203), NSS is received (20).
4) After receiving the NSS, it is determined whether or not the communication type information is stored in the NSS (205).
o. When "1" is written in the management table 13A (206), but the communication type information is not stored in the NSS (205), the facsimile machine F
Is set (207).

Thus, if it is determined that the facsimile machine F has set the remote facsimile, the main control unit 1
0 stores the remote FAX flag in the management table 13A (208), and then stores the page N in the management table 13A.
o. "1" is stored (209), but if not, it is regarded as normal facsimile reception and the page No. is stored in the management table 13A. "1" is stored (209).

Next, the image data is received (210),
The received image data is encoded and stored in the image memory 15 (211), and the reception of one page of the document ends (21).
2).

Thus, when one page of the document is completed,
Page No. Is incremented (213), and if image data is subsequently received (214), the line type (telephone line A) is set to the incremented document page No.
And the communication No. assigned in step 202. At the same time, the data is written into the management table 13A (215).

Such an operation is repeated until all the pages of the image data have been received. When the reception of the image data of all the pages has been completed, the main control unit 10 disconnects the connection of the line A. Then, the facsimile reception ends.

Next, an example of the operation of facsimile reception on the telephone lines B and C will be described with reference to the flowchart of FIG.

When the sub-control units 20 and 30 detect the incoming call of the lines B and C (300), the sub-control units 20 and 30 send the image write request command to the line type, page No. The data is written into the dual port RAMs 21 and 31 together with "0" (301). Is read (302), and whether or not there is an empty area in the image memory 15, that is, the main control unit 10
Communication No. assigned by Is determined to be "0" (303).

When there is an empty area, NSF and DIS are sent out according to a normal facsimile communication procedure (3).
04), the NSS is received (305); otherwise, the facsimile reception ends.

According to a normal facsimile communication procedure, N
After transmitting SF and DIS and receiving NSS, it is determined whether or not the communication type data is stored in the received NSS (306), and if the communication type information is stored,
Start command with communication type information added
o. “1” is written into the dual port RAMs 21 and 31 (307), but if no communication type information is stored, only the start command is transferred to the dual port RAMs 21 and 31.
1 is written (308).

Next, the image data is received (309),
Encodes the received image data to form a dual port RA
The data is stored in M21 and M31 (310), and the reception of one page of the document ends.

When the reception of one page of the manuscript is completed (311), the page number of the manuscript is determined. Is incremented (312), and if image data is subsequently received (31)
3), the image writing request command is set to the line type and the incremented original page No. , The communication NO. With dual port RAM
21 and 31 (314), and the main control unit 10
From the communication No. transmitted from the dual port RAMs 21 and 31. Is read (315).

At this time, the read communication No.
Is 0 (316), the image memory assumes that an overflow has occurred and terminates the processing. Otherwise, the image data of the next page is received, and the same operation is performed for all pages of the image data. This is repeated until the reception ends.

The dual-port RAM 31 is constantly monitored by the sub-control unit 20. Each time image data per document page is stored in the dual-port RAM 31, the stored image data is stored in the sub-control unit 20.
Thus, the data is transferred to the dual port RAM 21, read according to the operation shown in FIG. 4 by the main control unit 10, and stored in the image memory 15.

In the multi-line facsimile apparatus F as described above, of the image data stored in the image memory 15, if the communication type is remote communication,
An external communication terminal can specify the telephone line on which the image data has been received and perform remote transmission. This operation will be described with reference to the flowchart of FIG.

When an external communication terminal receives a call to telephone lines A, B, and C, the main control unit 10
After transmitting NSF (non-standard function identification signal) and DIS (digital identification signal) to the telephone lines A, B, and C (400), a remote transmission command (for example, "#
1 ") is received (401).

Then, the main control unit 10 refers to the management table 13A (402), stores the flag of "remote communication", and writes the identification information of the telephone line specified by the received command. Communication No. Is determined (403), and the image data stored at that address in the image memory 15 is
In accordance with the order of “manuscript page No.”, telephone lines A,
Remote transmission is performed to B and C (404).

Note that the telephone lines A, B,
As a method of designating C, for example, following “#”,
There is a method of inputting "1" to specify the telephone line A, "2" to specify the telephone line B, and "3" to specify the telephone line C, and is not particularly limited to this method. .

[0043]

As can be understood from the above description, in the communication terminal device according to the first aspect of the present invention, when the received image data is received by the common image memory, the type information of the receiving line is changed. Since the image data is stored in the management table and managed, as in the conventional case, when image data is simultaneously received by facsimile over a plurality of telephone lines, if the communication type of these image data to be received is the same, one of the telephone It is possible to prevent the facsimile reception of image data on a line from being rejected and the connection from the line from being cut off.

In the communication terminal device according to the second aspect, the interface is constituted by a dual-port RAM for simultaneously writing and reading data.
Multitask control using a dual port RAM becomes possible.

In the communication terminal device according to the third aspect, when a remote transmission command is received from any one of the telephone lines, the facsimile main control unit refers to the management table and calls the telephone designated by the command. Since the image data received on the line is read from the common image memory and transmitted remotely, a desired telephone line is designated from an external communication terminal, and the image data received on the telephone line is designated. Can be sent remotely, which is convenient.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an internal configuration of a communication terminal device according to the present invention.

FIG. 2 is a diagram illustrating an example of a configuration of a management table.

FIG. 3 is a flowchart illustrating an example of a multitask control operation.

FIG. 4 is a flowchart illustrating an example of a facsimile receiving operation in a facsimile main control unit.

FIG. 5 is a flowchart illustrating an example of a facsimile receiving operation in the communication control unit.

FIG. 6 is a flowchart illustrating an example of a remote transmission operation.

[Explanation of symbols]

 F: Multi-line facsimile apparatus 1: Facsimile main control unit 2, 3: Communication control unit 13A: Management table 15: Image memory 17, 24, 34 ... Codec circuit 21, 31 ... Dual port RAM A, B, C ... Phone line

Claims (3)

[Claims] 1. A facsimile main control unit having a common image memory via an interface, comprising a plurality of communication control units each having an encoding / decoding circuit and connected to a telephone line. A communication terminal device configured to store received line type information in a management table of the image memory and manage the received line data when storing the received image data in a common image memory. 2. The communication terminal device according to claim 1, wherein said interface is constituted by a dual-port RAM for simultaneously writing and reading data. 3. A facsimile main control unit according to claim 1, wherein, when a remote transmission command is received from any one of the telephone lines, the facsimile main control unit refers to the management table of the image memory to execute the command. A communication terminal device configured to read out image data received through the telephone line specified by the above from the common image memory and transmit it remotely.