KR970003381B1 - Facsimile system control circuit and method - Google Patents

Abstract

A simplicity switching communication path control circuit and a method for the facsimile where use the document transmission/receiving function of the facsimile and the plural telephone function of the simplicity switch at the same time, because of controlling the station line of the switch in the facsimile according to the unification of the facsimile and simplicity switching path.

Description

Simple switching channel control circuit and method thereof of facsimile system

1 is a block diagram of a conventional facsimile configuration circuit.

2 is a block diagram of a conventional simple exchanger configuration circuit.

3 is a flowchart of a conventional facsimile operation.

4 is a flow chart of a conventional simple exchange operation.

5 is a block diagram of a facsimile system according to the present invention.

6 is a flowchart illustrating a first operation of a facsimile system according to the present invention, and (a) is a flowchart in a transmission mode of a facsimile function. (b) is a flowchart in the reception mode of the facsimile function.

7 is a flowchart illustrating a second operation of a facsimile system according to the present invention. (b) is a flow chart when connecting to an extension-line call of a simple switching function.

* Explanation of symbols for main parts of the drawings

10: subject fisheries 20: rom

30: compressed image data storage unit 40: reading unit

41: read control unit 50: recording unit

51: recording control unit 60: compression / restoration unit

70: modem unit 80: transmission and reception amplification and filter unit

90: codec unit 100: trunk line control unit

110: trunk line codec unit 120: switch unit

130: extension control unit 130a: DTMF transmission unit

140: extension codec section 150: trunk line / extension line

160: trunk line control input / output unit 170: station control input / output unit

The present invention relates to data transmission and reception of a facsimile system, and to a control circuit and a method for a simple exchange call. Particularly, the facsimile manuscript transmission, reception and facsimile functions of the facsimile are controlled by unifying the facsimile and the simple switching device. It is possible to use the multiple telephone functions of the exchange at the same time.

Conventionally, a facsimile and a simple exchanger are provided separately, and a conventional facsimile includes a main control part 1 for controlling the whole, a reading part 2 for reading an original, and reading and receiving data as shown in FIG. A recording unit 3 for recording, a line control unit 7 for controlling a general telephone network connection, a transmitter / receiver 4 for transmitting / receiving compressed image data according to a facsimile communication protocol, and transmission of read image data. Compression / restoration unit (5) for performing the time compression function and the restoration function of the received signal image data, and the input / output unit (6) for controlling the rotation control unit 7, the conventional simple switching device 2 As shown in the drawing, the main control unit 11 for controlling the entire apparatus and the trunk line control unit 13 for controlling the connection of the general telephone network, the station control unit 14 for controlling the terminal telephone connected to the station, and the trunk line to the station or to the station We call by trunk line It is composed of a switch unit 12 for connecting the furnace.

Such a conventional facsimile operation can be binarized (S ₃ ) by reading the original (S ₂ ) through a reading unit in the copy mode (S ₁ ) or transmission mode (S ₆ ), as shown in FIG. In the copy mode, the data is transferred to the recording device (S ₄ ) and recorded (S ₅ ), and in the transmission mode, the data is compressed (S ₁₃ ) through the compression / recovery unit and transmitted through the transmission / reception unit and the line control unit. S ₁₄ -S ₁₆ ), and in the reception mode (S ₇ ), the rotation controller is controlled (S ₈ ) to receive the received data through the transceiver (S ₉ ), and the received data is restored (S ₁₀ ) to the recording apparatus. Record (S ₁₂ ) after passing (S ₁₁ ).

In addition, in the operation of the simple switch, as shown in FIG. 4, when a call with an extension is desired from a trunk line (S ₁₇ ), the main control unit 11 removes the trunk line control unit 13 to connect a trunk line call (S ₁₈ ), After controlling the switch unit 12 (S ₁₉ ) to connect the trunk line to the extension (S ₂₀ ) and control the extension control unit 14 again to connect to the internal call (S ₂₁ ) to make a call, the call between the extensions If you want (S ₂₂ ), by connecting the extension call path through the extension control unit (S ₂₃ ) to make an inter-line call (S ₂₄ ), if you want to talk to the CO line from the extension (S ₂₅ ) Extension control unit ( 14) to connect the internal call path (S ₂₆ ) and to control the switch unit 12 (S ₂₇ ) to connect the station to the trunk line (S ₂₈ ) again to control the trunk line control unit 13 to control the trunk line By connecting (S ₂₉ ) to make a call.

However, in the prior art as described above, since the facsimile and the simple exchange device are dualized, the facsimile cannot perform the telephone function when transmitting and receiving, and the facsimile function cannot be performed when the telephone function is performed.

The present invention has been made in order to solve the above problems, and in particular, the facsimile and the simple exchange device are unified to control the trunk line of the simple exchange in the facsimile, while the facsimile uses the trunk line of the simple exchanger while the original is transmitted / received. The purpose of the present invention is to provide a control circuit and a method through a facsimile data transmission and reception of a facsimile system that enables a telephone call.

Hereinafter, the configuration of the present invention will be described in detail by the accompanying drawings.

5 is a block diagram of a circuit for transmitting / receiving data and facilitating exchange of a facsimile system according to the present invention. As shown in FIG. A ROM for storing an exchange control program (ROM: 20), a read unit 40 and a read control unit 41 for reading an image of a document and binarizing it through a process of image correction, halftone processing, contrast, and the like; A recording unit 50 and a recording control unit 51 for recording the original image data, a compression / restoration unit 60 for compressing / restoring the binarized data, and a compressed image data storage unit for storing the compressed image data ( 30), the modem unit 70 for transmitting or receiving image data at a transmission rate and a parameter suitable for the state of the transmission line and the transmission device, and amplifying and filtering the image signal transmitted and received by the trunk line at a constant rate to stabilize it. Is a transmit / receive amplification and filter unit 80, a codec unit (CODEC: 90) for digitally or analogizing a transmission / reception signal in the facsimile transmission line, and a plurality of trunk lines A trunk line control unit 100 for controlling a call path, a trunk line codec unit 110 ( ₁ ) -110 (n) connected to the trunk line control unit and serially connected to each trunk line, and a switch unit 120 for selectively switching the trunk line codec unit. ) And an extension control unit 130 for controlling a communication path with a plurality of extensions (extension 1-extension n) by incorporating a DTMF transmission unit 130a for transmitting a tone and DTMF signal to a selected trunk line, and connecting to an extension control unit. An internal codec unit 140 ( ₁ ) -140 (n) connected to each station in series, a trunk line / interline exchange unit 150 which is controlled by a main control unit and connects a trunk line with an extension line, and the trunk line control unit Alternatively, the input / output unit 160 for the trunk line control for controlling the station control unit and the input / output unit 170 for the station control may be configured. Sung.

6 is an operation flowchart for performing a data transmission and reception function of the facsimile in the data transmission and reception of the facsimile system according to the present invention and a simple switched communication path control circuit. As shown in FIG. A first step (A ₁ -A ₅ ) of reading and compressing the transmission originals into a memory and storing the unused trunk lines by checking a plurality of trunk line use states through the trunk line control unit after the first step; Step 2 (A ₆₁ -A ₆ n) and the third step (A ₇₁ A ₁₂₁ ... A ₇ n A ₁₂ n) of selecting the unused trunk line and transmitting the compressed image data stored in the memory to the trunk line. The reception mode (b) is a fourth step (B ₂₁ -B ₄₁ -B ₂ nB ₄ n) of controlling each trunk line to receive and analogize the received data of the trunk line, and amplifying the analogized signal. And filter to enter the fax through the modem By a step of recording a fifth to restore the image data (B ₅ -B _11).

FIG. 7 is an operation flow chart for performing a simple exchange function in the data transmission and reception of a facsimile system according to the present invention and a simple switched communication path control circuit, and as shown in the figure, when a call from an trunk line to an extension is desired. Step 6 (C ₁ -C ₃ ) of detecting the ring signal from the CO line by the CO line control unit and digitizing the codec of the corresponding channel, and finding an available extension by checking the station usage status through the station control unit. Step 8 (C ₄₁ -C ₄ n) and the 8th step (C ₅₁ -C ₈₁ ... C ₅ nC ₈ n) of selecting an available extension and connecting the call path to the corresponding extension through the trunk line / inter extension switch. If you want to talk to the CO line from the station, check the state of the CO line using the CO line control unit to select the 9th system (D ₂₁ -D ₂ n) and find the CO line not used Ext Step 10, when the other party receives the dial signals through the fisherman while dialing through the fisherman, the digital conversion signal of the corresponding codec is analogized by the corresponding codec through the CO / IC exchange unit to transmit the voice signal to the corresponding trunk line (step 10). D ₃₁ -D ₈₁ ... D ₃ nD ₈ n).

Operation and effects in the present invention configured as described above are as follows. First, the facsimile operation for transmitting and receiving image data is as shown in FIG. 6. First, in the transmission mode (a), the reading unit 40 reads the image of the original (A ₂ ) through the reading control unit 41. Binary image processing is performed through image correction, halftone processing, business card processing, etc. (A ₃ ) and the compression / restoration unit 60 undergoes a data compression process suitable for the performance of the other transmitting device (A ₄ ). The compressed image data is stored in the compressed image data storage unit 30 (A ₅ ), and the state of the next trunk line is continued if the first trunk line (C trunk line 1) connected to the general telephone network is in use (A ₆₁ ). If it checks (A ₈ n) and is used until the last trunk line (trunk line n), the checking operation of the first trunk line is repeated again.

Next, for example, if the first trunk line is not in use, the compressed image data stored in the compressed image data storage unit 30 is transmitted through the modem unit 70 as an analog signal, and the transmission speed and Transmitted by the transmission parameter (A ₇₁ ), amplified and filtered by a certain ratio in the transmission and reception amplification and filtering unit 80 and stabilized (A ₈₁ ) and then digitized through the codec unit 90 (A ₉₁ ) general telephone network After converting to analog again through the channel 110 (1) of the corresponding CO line codec unit 110 connected in series to the first CO line of (A ₁₀₁ ), it is via the CO line control unit 100 (A ₁₁₁ ). It will be transmitted ₍₁₂₁ a) with CO 1), wherein the operation in the other trunk line other than the one trunk line (a ₆ nA ₁₂ n) is operated as in the principle of operation of the first trunk line.

Secondly, in the reception mode (b) from the other transmitting device, when a transmission signal is received through, for example, a first trunk line (trunk line 1) connected to a general telephone network (B ₂₁ ), the trunk line control input / output is controlled from the trunk line control unit 100. The incoming situation is transmitted to the unit 160 (B ₃₁ ) and at the same time, the main control unit 10 recognizes it and encodes it through the corresponding CO line codec unit 110 (B ₃₁ ). The digital signal is again codec unit 90. After passing through to the analog signal contained in the carrier signal (B ₅ ), and through the transmit / receive amplification and filter unit 80 (B ₆ ) is transmitted to the modem unit 70 (B ₇ ) and then the necessary compressed image signal is The original image data is restored (B ₈ ) through the compression / recovery unit 60, and the restored image data is transferred to the recording unit 50 via the recording control unit 51 (B ₉ ) (B ₁₀ ). It is recorded (B ₁₁ ).

Next, as shown in FIG. 7, when the call is connected to the station from the trunk line, the ring channel is received by the trunk line connected to the general telephone network (Clines 1 to n) (C _1). The CO line codec connected to the CO line control unit detects this (C ₂ ) at the CO line control unit 100, receives the CO line control I / O unit 160, and simultaneously controls the CO line control unit 100 at the main control unit 10. While converting and accepting a voice signal digitally through the channel of the unit 110 (C _s ), the usage status of the extension is checked (C ₄₁ -C ₄ n) to determine the availability, and if there is an available extension (e.g., for the path of the first extension) CO / between station selected in the switching section (150) (C ₅₁₎ by the extension over a channel of a codec (140) (C _61), extension control section 130 changes back to an analog audio signal through (C ₇₁₎ and delivery ₍₈₁ C) the audio signal in a first station (station 1), Operation (C ₄ nC ₈ n) of the station, if available in the group other than the first station is operating, as with the principles of the first extension.

In addition, when a call with a trunk line is made from a terminal telephone connected to a station, (b) a call path is opened among a plurality of stations (extensions 1 to n) (D ₁ ) and the state of use of the trunk line is checked (D ₂₁ -D ₂ n). If there is no CO line in use, dialing from the corresponding station (Ext. 1) side (for example, the first station) transmits a dial signal from the CO line control unit 100 to the corresponding CO line through the DTMF transmitter 130a, thereby transmitting from the other phone. If the called party through the station controller (130), (D ₃₁₎ through the extension codec unit 140 connected to the extension, the analog audio signal of the first station will change to a digital signal (D ₄₁₎ CO / extension exchange 150 Throughout the (D ₅₁₎ is a digital audio signal from the CO line codec 110 re-connected to the trunk line is converted into an analog voice signal (D _61), via a trunk line control unit (100), (D ₇₁₎ the voice in a first CO the signal is transmitted (D _81), operation of the other trunk line other than the first CO Action (D ₂ nD ₈ n) is operated as in the principle of operation of the first trunk line.

As described above, the present invention can use the telephone function at the same time while performing the facsimile function for transmitting / receiving an original, so that the facsimile status of the facsimile can be notified immediately during transmission or reception. In addition, the facsimile and the simple exchange can be unified into a single system, which is useful in reducing the cost.

Claims (3)

The main control unit 10 for controlling the operation of the entire system, the ROM 20 for storing the program for facsimile control and the switchboard control, and the process of reading image data, correcting the image, halftone processing, and contrast processing. A read unit 40 and a read control unit 41 for binarizing, and a compression / restore unit for compressing or restoring the binarized image data with the recording unit 50 and the recording control unit 51 for recording the restored image data ( 60), a compressed image data storage unit 30 for storing the compressed image data, a modem unit 70 for transmitting or receiving image data at a transmission rate and transmission parameter suitable for a state of a transmission line and a transmission device, A transmit / receive amplification and filter unit 80 for amplifying, filtering and stabilizing image signals transmitted and received over a trunk line, and a codec unit 90 for digitalizing or analogizing image signals transmitted and received; A trunk line control unit 100 for selectively connecting a call path with a trunk line (Cross lines 1 to n), and a trunk line codec unit 110 for digitally or analogizing signals transmitted and received by being serially connected to each trunk line through the trunk line control unit. ), A switch unit 120 for selectively switching the trunk line codec unit, and a DTMF transmitter 130a for transmitting a tone and a DTMF signal to the selected trunk line, and a plurality of stations (extensions 1 to n). An extension control unit 130 for selectively connecting a call path, an extension codec unit 140 connected to each extension through the extension control unit to digitally or analogize signals transmitted and received, and controlled by the main control unit Comprising a trunk line / interline exchange unit 150 that connects a trunk line with an extension line, a trunk line control input / output unit 160 and an extension control input / output unit 170 for controlling the trunk line control unit or the station control unit. As data transmission, reception, and call for a facsimile system as ranging control circuit. A first step of reading and compressing image data of a transmission document in a transmission mode and storing the same in a memory; and a second step of checking unused trunk lines by checking a plurality of trunk line use states after storing image data of the first step; A third step of converting the compressed image data stored in the first step to the corresponding trunk line found in the second step according to a transmission line through a modem and transmitting the compressed image data; A fourth step of receiving and analogizing the image data; and a fifth step of amplifying and filtering the image data input in the fourth step, inputting the image data into a facsimile through a modem, and restoring and recording the image data. How to send and receive data. If you want to talk to the station from the CO line, the first step is to detect the ring signal coming through the CO line and digitize it as the CO line codec of the corresponding channel, and check the extension usage status through the extension codec after the first step. A second step of finding an extension, a third step of selecting an available extension found in the second step and connecting a call path to the corresponding station by a trunk line / extension exchange means; Step 4 to find the unused trunk line by checking the trunk line use status, and select the unused trunk line found in step 4 to transmit the dialed dial signal from the station to the trunk line, Digital conversion signal is converted into analog coded by the extension codec. And a fifth step of connecting a corresponding trunk line to transmit a voice signal.