KR100257819B1 - MFP equipped with dual access control unit supporting dual access to integrated information communication network and its control method - Google Patents

Abstract

PURPOSE: A decoder and control method thereof are provided to simultaneously perform two line accessible functions, when the decoder is connected to ISDN through two channels of the ISDN. CONSTITUTION: An ISDN subscriber access controller(ISAC)(100) controls communication channels of the ISDN and transmits data adept to a standard of the ISDN. An ISDN line interface(110) transmits the data provided thereto from the ISAC(100) with adapted to a physical/electrical standard of the ISDN. A serial input/output device(SIO)(90) converts the data provided thereto from a computer to a format adapted to the ISDN. A double access controller(80) allows two functions of facsimile and telephone and data communication functions to be simultaneously performed.

Description

Multifunction device with dual access control unit supporting dual access to integrated information communication network and its control method

The present invention relates to a multifunction device and a control method thereof, and more particularly, to use two channels (2B channels) of an integrated information communication network (ISDN) in a multifunction device accessible to an integrated information communication network (ISDN) for different functions. The present invention relates to a multifunction device having a dual access control unit supporting access and a control method thereof.

In general, a multifunction device, as is well known, is a multifunctional terminal made by combining terminals existing in a single unit, such as a facsimile machine, a scanner, a printer, a copier, and having a function of interworking with a computer, that is, a computer-interface function. This refers to the Multi Functional Product (MFP).

Conventional multifunction devices connect to a computer using a parallel or serial port of a computer, and then print a file. Scan a document using a fax scanner and save the read data as a file in the computer's memory. It provides the function, the fax function to send the read data to a remote multifunction device or fax connected to the public network and print the transmitted fax data, and the telephone function to make a telephone call with the telephone connected to the public network.

In general, the MFP that performs the fax function can be divided into the MFP that communicates with the fax through the Public Switched Network (PSTN) and the MFP that communicates with the Fax through the Integrated Services Digital Network (ISDN). A multifunction device that integrates the G3 and G4 protocol functions into the MFP, enables fax and fax communication connected to the public line switching network (PSTN) through the G3 protocol, and frees fax and fax communication connected to the Integrated Services Digital Network (ISDN) through the G4 protocol. have.

Such a multi-function device is a "circuit and method for connecting a facsimile to a public switched telecommunication network and a comprehensive telecommunication network, a facsimile capable of connecting a public switched telecommunication network and a comprehensive telecommunication network" of the application No. 20347 filed by the applicant with the Korean Patent Office in 1997; In the same year, the application No. 63643, "multifunction machine capable of transmitting / receiving fax data and data communication by connecting to a general information communication network" was presented.

Multifunction devices that communicate data through public networks such as PSTN and ISDN are provided with printing, scanning, faxing, and telephone functions. It does not support data communication, fax and data communication at the same time.

Generally, PSTN can only perform one data communication through one communication line at the same time, so it is not possible to perform several functions at the same time through multifunction device. Since two channels can be supported on the communication line, that is, 2B + D can be supported, thereby enabling two types of data communication at the same time.

As such, a multifunction device connected to an ISDN cannot support telephone and fax functions, telephone and data communication functions, and fax and data communication functions at the same time. There is a problem that can not take advantage of 2B + D that can communicate by securing two channels through the physical line.

Accordingly, the present invention was devised to solve such problems, and an object of the present invention is to provide an integrated information communication network using two channels (2B channels) of an integrated information communication network (ISDN). When connecting to an ISDN, it is possible to simultaneously perform two functions of the MFP's line connection (such as fax and telephone, data and telephone, data and fax).

1 is a system block diagram of a multifunction apparatus having a dual access control unit supporting dual access to an integrated information communication network (ISDN) according to the present invention,

2 is a block diagram showing a dual access control unit according to the present invention.

<Description of the code | symbol about the principal part of drawing>

1: Multi-function system part 2: Integrated information and communication network interface part

10: central processing unit 20: memory unit

30: scanner portion 40: printer portion

50: computer interface unit 60: pixel conversion unit

70: modem unit 80: dual access control unit

90: serial input / output device (SIO)

100: Integrated IT Network Subscriber Access Controller (ISAC)

110: Integrated Information Communication Network Line Interface

120: phone

According to an aspect of the present invention for achieving the above object, an integrated information network subscriber access controller (ISAC) that controls the communication channel of the integrated information communication network and transmits the data in accordance with the standard of the integrated information communication network ; An integrated telecommunication network line interface unit for transmitting data transmitted from the integrated telecommunication network subscriber access controller (ISAC) by satisfying a physical and electrical standard of the integrated telecommunication network (ISDN); A serial input / output device for converting data input from a computer into a form suitable for the integrated information communication network; Dual access to the ISDN including a dual access control unit for accessing the ISDN to simultaneously perform two of the fax, telephone and data communication functions of the multifunction device. Disclosed is a multifunction device having a dual access control unit.

Advantageously, the dual access control unit comprises: a switching unit for selecting functions to simultaneously perform two functions of the fax, telephone and data communication functions; A switching controller for generating a control signal to select a function by the switching unit; A plurality of codecs for converting digital data into analog data and analog data into digital data for data communication with the integrated information communication network; And a codec selecting unit for selecting the codec unit to perform a function according to the selected function.

Preferably, the switching unit is composed of a plurality of multiplexers to establish a data communication path between the modem unit and the telephone set according to the selection of the switching control unit.

According to another aspect of the present invention, when the telephone and fax functions are simultaneously requested to the multifunction device, a first step of establishing a communication path for the telephone and fax communication to simultaneously perform the telephone and fax communication; A second step of simultaneously setting up a communication path for the telephone and data communication when simultaneously making a telephone and data communication request to the multifunction apparatus; In the case of requesting fax and data communication at the same time to the multifunction device, dual access to an ISDN including a third step of establishing a communication path for the fax and data communication simultaneously. Disclosed is a control method of a supported multifunction device.

Preferably, the first step includes, after detecting the hook hawk of the telephone, connecting the telephone and the modem to the plurality of codec units, respectively, and connecting to an integrated information communication network (ISDN) through dialing information; Connecting to the integrated information network (ISDN) and simultaneously performing the telephone call and fax transmission and reception through the B1 channel and the B2 channel of the integrated information communication network (ISDN).

Advantageously, the second step further comprises: setting a data communication path for establishing said data communication through a path leading to said computer, said serial input / output device (SIO), and said integrated access network subscriber access controller (ISAC); A telephone call path setting step of establishing a communication path by connecting the telephone call with any one of the phone and the plurality of codec units; And performing the telephone and fax communication simultaneously according to the set path.

Preferably, the third step includes a data communication path setting step of setting a communication path for the data communication; A fax communication path setting step of setting a communication path for the fax data communication; And performing the facsimile and data communication simultaneously according to the set path.

Hereinafter, the objects, features, and advantages of the present invention described above will be described in more detail with reference to the preferred embodiments of the present invention shown in the accompanying drawings.

The terms to be described below are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of a person skilled in the art, and the definitions should be made based on the contents throughout the specification.

Referring to FIG. 1, a multifunction apparatus having a dual access control unit supporting dual access to an integrated information communication network (ISDN) according to the present invention will be described.

As shown, a multifunction device is roughly divided into a multifunction system part 1 which performs a general multifunction device function, and a general information communication network interface part 2 which allows a dual operation to be simultaneously connected to an integrated information communication network (ISDN). .

Looking at the multi-function system unit 1 in detail as follows.

First, the central processing unit 10 controls the multifunction apparatus as a whole according to the set program. The memory 20 stores program data, protocol data, text data, and work contents related to transmission and reception, and accesses or stores data under the control of the CPU 10. The scanner unit 30 scans the data of the original, converts the image data into digital image data, and provides the same to the central processing unit 10. Under the control of the central processing unit 10, the modem 70 modulates and outputs the output data of the central processing unit 10 in an analog form, and demodulates and outputs the analog input signal. The printer 40 prints the data received by the control signal from the central processing unit 10. The pixel conversion unit 60 converts the image information input from the scanner unit 30 so as to be suitable for fax transmission / reception. The computer interface unit 50 connects the multifunction device to the computer, and the connection method uses a serial connection or a parallel connection method, which is a peripheral device connection method of a computer. The serial connection method uses an asynchronous communication COM port, which is a serial port of a computer. RS-232C is used to communicate with peripheral devices to support external modem connection. In addition, the parallel connection method is mainly used when connecting to a device such as a printer or plotter, and is a method commonly used for a device for transmitting data in one direction. The telephone 120 is used when conducting a telephone call by the user.

Meanwhile, a detailed description of the integrated information communication network interface unit 2 of FIG. 1 will be given below.

First, an integrated information network subscriber access controller (ISAC: short term 'ISAC') 100 controls a communication channel of an integrated information communication network (ISDN) and adjusts data to meet the specifications of an integrated information network (ISDN). To transmit.

In detail, the integrated information network subscriber access controller (ISAC) 100 includes a line coding and line activation / deactivation function, which is a layer 1 function, for the D channel control, and a link access procedure on th D-channel, a layer 2 function. Function to check the communication possibility by checking the path setting and the property of the partner corresponding to the selection and setting of the channel, which is the layer 3 function, and the state corresponding to the dial, and the data through the integrated information communication network line interface 110. It performs the function of sending / receiving.

Preferably, the integrated information network subscriber access controller (ISAC) 100 controls the codec selector 84 of the dual access controller 80, which will be described later, to perform a function currently performed by the codec selector 84 (e.g., a fax). The first and second codec units 83a and 83b to code the data according to the function and the telephone function are selected to form a communication path with the ISDN.

At this time, the integrated information communication network line interface unit 110 is composed of an interface circuit for satisfying the physical and electrical standards of the integrated information communication network (ISDN).

In addition, the serial input / output device (SIO) 90 performs a function of converting data input from the computer or the scanner unit 30 into a form suitable for the B channel of the integrated information communication network (ISDN). That is, the data inputted through the internal bus of the system is converted into serial data format and transmitted to the integrated information communication network subscriber access controller (ISAC) 100, and the serial data received from the ISAC 100 is transferred to the internal bus data transmission format. Converts to parallel data and transmits the same to the CPU 10.

Finally, the integrated information communication network interface unit 2 includes a dual access control unit 80 for accessing the integrated information communication network (ISDN) to simultaneously perform two functions of fax, telephone and data communication functions. .

Referring to FIG. 2, the dual access control unit 80 will be described in detail. First, the switching unit 81 and the switching unit 81 select functions to simultaneously perform two functions of a fax, a telephone and a data communication function. Switching control unit 82, which generates a control signal to select a function by means of the modem 70, converts the analog-converted signal back to a digital signal that can be transmitted to the ISDN and converts the received digital signal into the modem A plurality of codec units 83a and 83b for converting into an analog signal for interpretation by the 70, and a codec selecting unit 84 for selecting codec units 83a and 83b according to a function to be used in the present multifunction apparatus.

Preferably, the switching unit 81 is composed of a plurality of multiplexers (not shown) to set the data communication path between the modem unit 70 and the telephone 120 according to the selection of the switching control unit 82.

Hereinafter, the dual operation control of the multifunction apparatus according to the present invention will be described through the respective cases of the dual operation.

(1) When using the telephone and fax functions simultaneously

When the user lifts the telephone 120 attached to the all-in-one, the all-in-one detects the telephone OFF-HOOK.

Upon detecting the hook hawk, the central processing unit 10 generates a control signal through the switching controller 82 and transmits the control signal to the switching unit 81 composed of a plurality of multiplexers (not shown). And the modem unit 70 are connected to the first and second codec units 83a and 83b, respectively, and then the first and second codec units 83a and 83b are activated.

Subsequently, when the dialing information is transmitted to the integrated information communication network interface unit 2, the ISAC 100 of the integrated information communication network interface unit 2 receives the dialing information and is transferred to the integrated information communication network (ISDN).

Then, after the messages related to the connection of various ISDNs are processed, telephone calls and fax transmissions are simultaneously performed through the B1 and B2 channels of the ISDN.

(2) When performing telephone and data communication at the same time

In the case of data communication, the path of data is made through the path of the system ↔ SIO (90) ↔ ISAC (100), and in the case of a telephone, the central processing unit 10 generates a control signal through the switching controller 82 The phone 120 selects only one of the first and second codec units 83a and 83b by causing the switching unit 81 to be configured of a plurality of multiplexers (not shown).

That is, one codec unit is selected through the cotec selector 84 to convert the telephone conversation into A / D conversion and D / A conversion.

(3) When simultaneously performing fax and data communication

This case is similar to case 2. That is, in the case of data communication, since the path of data is made through the path of the system ↔ SIO (2) ↔ ISAC (100), only the fax communication is performed through the switching unit 81 and the codec without passing through the codec units 83a and 83b. It passes through the portions 83a and 83b.

In other words, one codec unit is selected through the codec selecting unit 84 to perform A / D conversion and D / A conversion of fax data.

As described above, according to the present invention, when a multifunction apparatus capable of accessing an integrated information communication network (ISDN) is connected to an integrated information communication network (ISDN) using a 2B channel of an integrated information communication network (ISDN), two functions capable of line connection of the multifunction apparatus are available. (E.g., fax and telephone, data communication and telephone, data communication and fax, etc.) at the same time, making full use of the ISB's 2B channel and giving the user two It is possible to simultaneously perform line connection.

Although the preferred embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that the present invention may be modified without departing from the spirit and scope of the invention as defined in the appended claims. It will be appreciated that modifications or variations may be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

Claims (7)

In a multifunction device that can be connected to an ISDN, An integrated information network subscriber access controller (ISAC) which controls a communication channel of the integrated information communication network and transmits data in accordance with the standard of the integrated information communication network; An integrated telecommunication network line interface unit for transmitting data transmitted from the integrated telecommunication network subscriber access controller (ISAC) by satisfying a physical and electrical standard of the integrated telecommunication network (ISDN); A serial input / output device for converting data input from a computer into a form suitable for the integrated information communication network; Integrated Information Communication Network (ISDN), characterized in that it comprises a dual access control unit for accessing the Integrated Services Digital Network (ISDN) to perform two functions of the fax, telephone and data communication functions of the multifunction device at the same time All-in-one with dual access control to support dual access. The method of claim 1, wherein the dual access control unit, A switching unit for selecting functions for simultaneously performing two functions of the fax, telephone, and data communication functions; A switching controller for generating a control signal to select a function by the switching unit; A plurality of codecs for converting digital data into analog data and analog data into digital data for data communication with the integrated information communication network; And a codec selector for selecting the codec to perform a function according to the selected function. The method of claim 1, wherein the switching unit, A multifunction apparatus having a dual access control unit supporting dual access to an integrated information communication network (ISDN), comprising a plurality of multiplexers to establish a data communication path between a modem unit and a telephone according to the selection of the switching control unit. An integrated information network subscriber access controller (ISAC) for controlling a communication channel of the integrated information network; A serial input / output device (SIO) for converting data input from a computer into a form suitable for the integrated information communication network; In a control method of a multifunction apparatus supporting dual access to an integrated information communication network (ISDN) having a plurality of codec units for converting digital data into analog data and analog data into digital data for data communication through a telephone and a modem unit, A first step of simultaneously setting up a communication path for the telephone and fax communication and simultaneously performing the telephone and fax communication when the multifunction device requests the telephone and the fax function; A second step of simultaneously setting up a communication path for the telephone and data communication when simultaneously making a telephone and data communication request to the multifunction apparatus; If the multi-function fax and data communication request to the multifunction device, an integrated information communication network (ISDN) comprising a third step of simultaneously performing the fax and data communication by setting a communication path for the fax and data communication How to control the all-in-one that supports dual access. The method of claim 4, wherein the first step, After detecting an off-hook of the telephone, connecting the telephone and the modem to each of the plurality of codec units, and then connecting to an integrated information communication network (ISDN) through dialing information; Connecting to the integrated information network (ISDN) and performing dual access to the integrated information communication network (ISDN) including simultaneously performing the telephone call and fax transmission and reception through the B1 channel and the B2 channel of the integrated information communication network (ISDN). Control method of supported multifunction device. The method of claim 4, wherein the second step, A data communication path setting step of setting the data communication through a path leading to the computer, the serial input / output device (SIO), and the integrated information network subscriber access controller (ISAC); A telephone call path setting step of establishing a communication path by connecting the telephone call with any one of the phone and the plurality of codec units; Control method of a multifunction apparatus supporting dual access to an integrated information communication network (ISDN) comprising the step of performing the telephone and fax communication at the same time according to the set path. The method of claim 4, wherein the third step, A data communication path setting step of setting a communication path for the data communication; A fax communication path setting step of setting a communication path for the fax data communication; And a step of simultaneously performing the facsimile and data communication according to the set path. 12. The control method of a multifunction apparatus supporting dual access to an integrated information communication network (ISDN).