KR960016840B1 - Facsimile equipment - Google Patents

Abstract

a picture processing part(21) performing the manuscript reading, recording, manuscript compressing and the recovering of the compressed data; a communication-controlling part(31) performing the independent function; a main controlling part(27) performing the information-receiving/transmitting with the picture processing part(21) and the communication controlling part(31) and displaying the information for the user; and the first shared memory(24) memorizing the control instruction and the information data between the picture processing part(21) and the main controlling part(27); the second shared memory(28) memorizing the control instruction and the information data between the communication-controlling part(31)and the main controlling part(27).

Description

Facsimile control and information transfer device

1 is a block diagram of a conventional facsimile control and information transmission device.

2 is a flowchart of a conventional facsimile control and information transfer operation.

3 is a block diagram of a facsimile control and information transmission device of the present invention.

4 is a structure diagram of a shared memory when there is a control command and multiple image data according to the present invention.

5 is a structure diagram of a shared memory in transferring data from an image processor to a main controller according to the present invention.

6 is a structure diagram of a shared memory in transferring data from an image processing unit to a main control unit according to the present invention.

7 is a structure diagram of a data sharing memory between a main control unit and a communication control unit according to the present invention.

8 is a flowchart illustrating an event occurrence event in the image processing unit or the communication control unit according to the present invention.

9 is a flowchart illustrating an operation when an event occurs in the main control unit according to the present invention.

10 is a flow chart of control commands and data from the main control unit to the image processing unit according to the present invention.

11 is a flowchart of a read mode transfer from a main control unit to an image processing unit according to the present invention.

12 is a flow chart of a control command and data transfer from the image processing unit to the main control unit according to the present invention.

13 is a flowchart illustrating a printer status transfer from the image processing unit to the main control unit according to the present invention.

14 is a flow chart of data transfer from the main control unit to the communication control unit according to the present invention.

15 is a flowchart of data transfer from the communication control unit to the main control unit according to the present invention.

* Explanation of symbols for main parts of the drawings

21: image processing unit 22: scanner

23: printer 24, 28: shared memory

25, 26, 29, 30: Interrupt 27: Main control part

31: communication control unit 21: digital network

33: telephone network 24a, 24g: control command area

24b, 24h: shared memory status flag area

24c: image processing unit status flag area

24d, 24e, 24j, 24k: image data buffer area

24f, 24l, 28a: Reserved area

28b, 28c: Flag area 28d, 28e: Data area

The present invention relates to a facsimile of a functional separation method, and more particularly, to a facsimile information transmission device and a control method adapted to improve control and information transfer efficiency between functional modules.

A conventional facsimile will be described with reference to the accompanying drawings.

1 is a block diagram of a conventional facsimile information transmission device, which includes a main control unit 1 for performing and controlling image reading, compression / restore, and transmission / reception functions, a ROM having stored therein a fax function execution command, and RAM (3) for storing data, a display unit (4) for displaying the status of the fax, and a sub-control unit (5) for performing and controlling various I / O functions such as step motors, various sensors, information input functions, and the like. ), A modem 7 for converting and demodulating a speech signal, a CODEL section 6 for compressing and restoring speech signals, recording and reading sections 11 and 12, various sensors 10, and a step motor 9 ) And the like.

The conventional facsimile operation configured as described above is as follows.

FIG. 2 is a conventional facsimile operation flowchart. When an event occurs in the main controller 1, an interrupt 11 is transmitted to the sub-control unit 5, and if the command cannot be received by the sub-control unit 5, standby and command reception are possible. The control command to the sub-control unit 5.

The sub-control unit 5 recognizes the instruction, jumps to the routine, and executes the related function.

In addition, when an event occurs in the sub-control unit 5, an interrupt is transmitted to the main control unit 1, and then a control command is sent to the main control unit 1 if the command reception is impossible in the main control unit 1 and the command reception is possible. To pass.

The main controller performs a related function by jumping to the routine that recognizes the state of the sub-control unit 5.

However, in the conventional facsimile machine, the control command is transmitted between the main control unit 1 and the sub control unit 5 to control the stepping motor, the recording device, the reading device control, and the operation states of various sensors. 1), but there is a problem in that it is an inappropriate structure for transmitting and receiving image data having a large amount of data between the main control unit 1 and the sub-control unit 5).

The present invention has been made to solve the above problems, and an object thereof is to improve control and information transfer efficiency between functional modules.

Referring to the attached facsimile information transmission apparatus of the present invention for achieving the above object as follows.

3 is a block diagram of a facsimile control and information transmission device of the present invention. The configuration of the present invention is a system configuration by a function separation method, which is connected to a scanner 22, a printer 23, and the like. Unification of original data compression, image processing unit 21 for restoring compressed data received from counterpart fax, existing telephone network (PSTN) 33 of analog communication network, and digital integrated communication network (ISDN) 32 which is next generation communication network The control unit 31, which is designed as a separate module to perform independent functions, and control and information data between the image processing unit 21 and the communication control unit 31 via the shared memories 26 and 28, In the transmitted / received image / communication module, it is composed of a main control unit 27 which displays the information on the user panel and the user panel by controlling the entire system by receiving the result of performing the corresponding function. Interrupt 25 from 1) to the main controller 27 and interrupt 26 from the main controller 25 to the image processing unit 21 are present, and the interrupt from the main controller 27 to the communication control unit 31 ( 29) and the interrupt 30 signal line from the communication control unit 31 to the main control unit 27.

Here, the shared memory 24 between the image processing unit 21 and the main control unit 27 or only the main control unit 27 and the image processing unit 21 has only a control command. If there is a control command light image data in the shared memory 24, the control command and a plurality of image data exist as shown in FIG. 4, and the shared memory at the time of transferring data from the main control unit 27 to the image processing unit 21. (24) The structure is shown in Fig. 5 as the control command area (12 bytes) 24a, shared memory status flag area (1 byte) 24b, image processing status flag area (2 bytes) 24c, and first image data buffer area ( 1kbyte) (24d), second image data buffer area (1kbyte) 24e, spare area (33bytes) 24f, and shared memory (i.e., data transfer from image processing unit 21 to main control unit 27). 24. The structure includes a control command area (12 bytes) 24g, shared memory status flag area (1 byte) 24h, first spare area (1 byte) 24i, and first image data. It is composed of the buffer area (1kbyte) (24i), the second image data buffer area (1kbyte) (24k), the second spare area (33byte) (24i). The structure of the shared memory 28 during data transfer between the main control unit 27 and the communication control unit 31 is a spare area (2 bytes) 28a, a first flag area (1 byte) 28b, as shown in FIG. It consists of a second flag area (1 byte) 28c, a first data area (2046 bytes) 28d, and a second data area (2046 bytes) 28e.

The operation of the facsimile control and information transmission device of the present invention configured as described above is as follows.

8 is an operation flowchart when an event occurs in the image processing unit or the communication control unit according to the present invention, FIG. 9 is an operation flowchart when an event occurs in the main control unit according to the present invention, and FIG. FIG. 11 is a flow chart of the data transfer process from the main control unit to the image processing unit according to the present invention. FIG. 12 is a flow chart of the control and data transfer from the image processing unit to the main control unit according to the present invention, and FIG. As a flow chart of transferring the printer status from the image processing unit to the main control unit, when an event (EVENT) occurs from the image processing unit 21 or the communication control unit 31 to the main control unit 27, the image processing unit / communication control unit 21, 31, as shown in FIG. After the control and information data are written in the allocation areas of the shared memories 24 and 28, the interrupts 25 and 30 are transferred to the main control unit 27, and then the main control unit 27 The control and information data of the associated shared memories 24 and 28 are read and executed, and when an event occurs from the main control unit 27 to the image processing unit / communication control units 21 and 31, the main control unit 27 controls the control unit as shown in FIG. And writing the information data into the shared memory 24, 28 and then passing the interrupts 26, 29 to the image processing unit / communication control unit 21, 31, the image processing unit / communication control unit 21, 31 transmits the associated shared memory ( Read the control and information data in 24 and 28 to execute the relevant functions.

That is, the control and data transfer from the main control unit 27 to the image processing unit 21 and the read mode transfer procedure read the status flag area 24b in the shared memory 24 as shown in FIGS. 10 and 11. (1s) Check that the control command area 24a is available (2s), wait if it is running, write command data in the control command area 24a if possible (3s), and check whether the data area can be used. (4s), if not possible, wait, and if possible, write image data into the first and second image data buffer areas 24d and 24e (5s).

After this processing, if the interrupt 26 is transmitted from the main control section 27 to the image processing section 21 (6s), the image processing section 21 reads the control commands and data of the main control section 27 in the shared memory 24. Take and execute the function (75).

In the read mode transfer, as shown in Fig. 11, the image read command is executed (8s), the read mode is written to the image processing unit status flag area 24b in the shared memory 24 (9s), and the interrupt 26 is delivered. (10s), the read mode of the image processing unit status flag in the shared memory 24 is read (11s), and then the corresponding function is performed (12s).

In addition, the data transfer from the image processing unit 21 to the main control unit 27 and the printer state transfer procedure are performed by reading the state flag area 24b in the shared memory 24 as shown in FIGS. 12 and 13 (21s). It is checked whether the command area 24a is available (22s).

If it is running, it waits and if possible, writes command data in the control command area 24a (23a) and judges whether the data area is available (24a). If not, it waits and if possible, the first and second image data. The image data is written to the buffer areas 24d and 24e and the interrupt 25 is transmitted from the image processor 21 to the main controller 27 to read the control commands and data of the image processor 21 from the main controller 27. To perform its function.

Here, in the case of printing, the image processing unit status flag in the shared memory is written in the print state by the conversion processing unit 21 as shown in FIG. 13 (28s), and the interrupt 25 is transmitted to the main control unit 27 (29s). At 27, the printer status flag in the shared memory is read (30s) and the corresponding function is printed (31s).

14 is a flow chart of the data transfer from the main controller 27 to the communication controller 31, and FIG. 15 is a flow chart of the data transfer from the communication controller 31 to the main controller 27, and from the main controller 27 to the communication controller. The data transfer procedure to (31) checks the first flag area 28b in the shared memory 28 (41s), and the first flag is checked. Check the accreditation (42s) or wait If the main controller 27 stores data in the first data area 28d in the shared memory (43s), the interrupt control unit (29s) is transmitted to the communication control unit 31 (44s), and the communication control unit 31 makes a first operation. The data stored in one data area 28d is read (45s), the communication control unit 31 sets the first flag area 28b to 1 (46s), and the corresponding function is executed.

In addition, in the data transfer procedure from the communication control unit 31 to the main control unit 27, the second flag area 28c in the shared memory 28 is checked (51s), and the second flag is checked. Check the authorization (52s) or wait The communication controller 31 stores the second data area 28e in the shared memory 28 in the shared memory 28 (53s), transmits the interrupt 30 to the main controller 27 (54s), and the main controller 27 The data stored in the second data area 28e is read (55s), and the main control unit 27 sets the second flag area 28c to 1 (56s) to perform the corresponding function.

In another embodiment of the present invention, in the case of unifying the shared memories 24 and 28, the image processing unit 21, the main control unit 27, and the communication control unit 31 share the contents related to each function in the above-described method. Can read and store.

As described above, in the facsimile control and information transmission device of the present invention, a large amount of information is divided and transmitted / received by applying a shared memory between functional modules to store original signals, receive signals of relative fax data, and transmit and store stored data. There is an effect that the management of a plurality of modules such as a document reading function can be performed simultaneously.

Claims (1)

An image processing unit 21 for restoring original reading and recording, compressing read original data, and receiving compressed data; and a communication control unit 31 for unifying the telephone network 33 and the digital network 32 to perform independent functions; A main control unit 27 for transmitting and receiving control commands and information data with the image processing unit 21 and the communication control unit 31, receiving and controlling the result of performing the corresponding function from the transmitted or received image or communication module, and displaying information to the user; A first shared memory 24 for storing control commands and information data between the main control section 27 of the image processing section 21, and a control command and information data between the communication control section 31 and the main control section 27; And a second shared memory 28 configured to transmit interrupts 25, 26, 29, and 30 between the image processing unit 21 and the main control unit 27, and between the communication control unit 31 and the main control unit 27. Facsimile, characterized in that Control and communication system.