KR950003320B1 - Telephone system using a microprocessor - Google Patents

Abstract

The system executes the multi information service, improves the covenience of information communication, and upgrades the multi function characteristic. The system includes a telephone circuit block(2) which uses common telephone(1); a keyboard(3) which inputs the information; a micom(4) which has a CPU(15), memories(17-20), decoders(21a-d), communcation interfaces(22a,22b), 1st, 2nd level converters(23,24), and a reset terminal(26); a modem(5) which has a modem CPU(31), a moden transmission terminal(32), a signal amplifier(34), and an output transformer(33); a display(6) which displays the function of information process with the micom(4).

Description

Phone system using microcomputer

1 is an overall block diagram of the present invention.

2 is a plan view showing the appearance of the telephone of the present invention.

3 is a flowchart of the present invention.

4 is a main functional menu diagram carried out by the present invention.

5 (a) to 5 (d) are detailed flowcharts of FIG.

6 (a) to 6 (e) is a menu diagram of an auxiliary function performed by the present invention.

7 is a circuit diagram of a conventional telephone.

* Explanation of symbols for main parts of the drawings

1: public communication line 2: communication circuit

3: keyboard portion 4: microcomputer portion

5: modem unit 6: display unit

7: Bell circuit stage 8: Rectification stage

9: call circuit 10: hold circuit

11: melody circuit stage 12: dial circuit stage

13: keyboard 14: interface for interrupts

15: central processing unit 16: the first ROM

17: 2nd Romans 18,19: 1st, 2nd RAM

20: E ² PROM 21a ~ d: Decoder

22a, 22b: communication interface 23: first level converter

24: second level converter 25: clock stage

26: reset stage 27: IC card

28: video RAM 29: video interface

30: LCD board 31: modem CPI

32: modem transmission stage 33: output transformer

34: signal amplifier stage 35: switching switch

36: External input / output device 37: Transmitter / receiver

38: personal computer 39: printer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone system using a microcomputer, and in particular, a modem unit and a telephone circuit unit are installed in a microcomputer unit and various information exchanges are performed by using a public communication network according to a built-in program. Of course, it relates to a telephone system using a microcomputer to improve the convenience of information communication by performing a variety of information exchange function by the microcomputer unit.

In general, the call device, that is, the telephone ring, the bell circuit stage 71 to ring the alarm to the user when the call signal is input through the public communication line 70, as shown in Figure 7, the bell circuit stage 71 The rectifier stage 72 is configured to rectify the input telephone AC voltage through a constant voltage, and receives and amplifies the call signal output from the rectifier stage 72. Then, the handset (not shown) is amplified by the amplified call signal. Call circuit 73, which is to be called through the call, Hold circuit 74 to hold the call state when the user temporarily suspends the call, Call partner when the call circuit 74 holds the call state Melody circuit stage 75 for listening to music, if the user wants to call the phone number of the telephone partner of the dial circuit stage 76 is configured to generate a pulse signal according to the input telephone number User If you want to call by converting the telephone number of the call partner on the keyboard when the input through the (not shown) the end of the input dial signal circuit 76 by counting the pulse signal and emits a public communication line (70). The counter pulse signal is supplied to the bell circuit stage 71 of the call partner's telephone via an exchange (not shown) so that the bell circuit stage 71 emits a warning sound, and the user lifts the handset according to the warning sound. The call signal is supplied to the call circuit unit 73 to make a call between the user and the call counterpart.

However, the conventional telephone as described above can not be used at all for various information exchange functions, such as stock quotes and regional directions, which are rapidly increasing because they are used only as a call function using the public communication line 70. Since there is no separate signal processing equipment, there is a problem that it cannot be used for multipurpose information management, for example, phone book management or reverse activity as a terminal.

Accordingly, the present invention has been made to solve the above problems, by installing a modem unit and a call circuit unit in the microcomputer unit to perform various information exchange using a public communication network according to the built-in program, by the call circuit unit The purpose of the present invention is to provide a telephone system using a microcomputer, in which not only the communication function is performed but also various information exchange functions are performed by the microcomputer unit, thereby improving convenience of information communication and multifunctional characteristics.

The present invention for achieving the above object, the call circuit unit to make a call using a public communication line, the keyboard unit to control the call function of the call circuit unit or to input a variety of information, a variety of input through the keyboard unit And a display unit configured to display information on the screen so that a user can select an information processing function of the microcomputer unit, and transmit a telephone number by a setting signal of the keyboard unit. And a telephone directory management menu for inputting and outputting a plurality of telephone numbers, and for managing a variety of information by connecting to terminals or other systems. .

Hereinafter, the present invention will be described in detail with reference to the accompanying exemplary drawings.

According to the present invention, as shown in FIG. 1, a call circuit unit 2, which is configured to make a call using a public communication line 1, and a keyboard unit which can control a call function of the call circuit unit 2 or input various information. (3) The microcomputer unit 4 is configured to control operation of various types of information input through the keyboard unit 3 according to a built-in program, and the public communication line 1 is operated in accordance with an operation control command of the microcomputer unit 4. The modem unit 5 is configured to exchange information signals by using the display unit 6, and the display unit 6 is configured to display the function on the screen so that the user can select the information processing function of the microcomputer unit 4 therein.

In addition, the call circuit unit 2 is provided with a rectifying stage for the bell circuit stage 7 to ring the alarm to ring a user when a call signal is input through a public communication line 1 (telephone line) to rectify the call AC voltage to a constant voltage. A communication circuit (9) connected to an input terminal of (8), wherein the output terminal of the rectifying stage (8) is supplied with an amplification signal and amplified, and then the amplified call signal is communicated through a handset (not shown). Is connected, and the hold circuit stage 10 is connected to the call circuit stage 9 so as to preserve the call state when the user temporarily suspends the call. In addition, between the call circuit 9 and the hold circuit 10 is connected to the melody circuit 11 to play music to the call partner when the call state is suspended, the circuit of the call circuit 9 The other terminal is connected with a dial circuit stage 12 which is configured to generate a count pulse signal in response to the telephone number of the call partner.

On the other hand, the keyboard unit 3 is connected to the interrupt interface 14, which is capable of inputting various information, to perform an interrupt function.

In addition, the microcomputer unit 4 includes a central processing unit 5, which is configured to collectively control the operation of the present invention system according to a built-in program, and is controlled by the central processing unit 15 and includes an operation program of the system. According to the information processing of the first ROM 16, the second ROM 17 operated as an auxiliary function of the first ROM 16 and incorporating a functional program of the system, and the central processing unit 15, First and second laps 18 and 19 configured to temporarily store information, an E ² PROM 20 configured to store selection information of a user performed by the central processing unit 15, for example, a telephone book list, and the like. Decoder 21a to d which moves various information to each part, for example, the 1st RAM 18 or the 2nd RAM 19 by the operation control of the said central processing unit 15, and the said central processing unit Communication to receive the information signal of (15) and buffer it to a certain signal level Interfaces 22a and 22b, the first level converter 23 which converts the information signals input and output from the communication interface 22a to a constant voltage level of the serial synchronization type, and the input from the communication interface 21d. A second level converter 24 for converting the output information signal to a constant voltage level of a parallel synchronization type; and a clock stage 25 and a decoder 21c for supplying a clock pulse signal to the microcomputer 4; ) Is connected to one end and the reset end 26 to reset the system as the hook switch (not shown) of the body is turned on and off, and the central processing unit as it is inserted into the socket (not shown) of the body It is composed of an IC card 27 connected to the bus line and the decoder 21c in (15) and incorporating various control information and corresponding protocol functions according to the transmission procedure.

On the other hand, the display unit 6 buffers the display information of the video RAM 28 and the display information of the video RAM 28 to store various display information according to the operation control of the central processing unit 15. It consists of an image interface 29, the LCD board 30 to display the display information input from the image interface 29 so that the user can see.

In addition, the modem unit 5 dials or modulates the operation of the information exchange using the public communication line 1 according to the operation control signal of the modem CPU 31, which is configured to control the operation of the information exchange using the built-in program. And a signal amplifier stage 34 which is connected to the public communication line 1 via an modem transmission stage 32 and an output transformer 33 to amplify an input / output information signal.

Wherein each of the parts (3, 4, 5, 6) is connected to the internal bus line, the switching switch 35 is connected to one end of the output transformer 33, the first level consisting of a serial synchronous port The personal computer 38 may be connected to the output terminal of the converter 23 for use. In addition, a printer 39 may be connected to the output terminal of the second level converter 24 configured as a parallel synchronous port, and an external input / output device 36 may be connected to the interrupt interface 14 for use.

Next, the operational effects of the present invention having the above configuration will be described.

The operation of the present invention is started when the user selects a function required. First, when the power switch (not shown) is turned on in the apparatus of the present invention, the entire system is in an initial state and the central processing unit 15 steps. In (S ₁ ), a menu of main functions embedded in the first ROM 16, for example, telephone number transmission, telephone directory management, information processing task, missed message transmission, electronic clock, screen as shown in FIGS. Information signals of the main function such as storage inquiry and initial value setting are loaded into the first and second RAMs 18 and 19 through the decoder 21a. The loaded information signals of the main function are loaded into the first and second RAMs 18 and 18, respectively. 19 is loaded into the video RAM 28. The video RAM 28 inputs an information signal of a main function, that is, a display signal, to the LCD board 30 through the image interface 29. Then, the LCD board 30 displays the information signal of the main function for the user to see as shown in FIG.

Also displays the auxiliary function menu selected, it proceeds to a step (S _2), a central processing unit (15), the step (S ₂₎ users If you have set to any function displayed on the LCD board 30 through the keyboard 13 in If the user has not set any functions, the process returns to step S ₁ to repeat the loop.

That is, when the user selects any one of the menus of the main functions shown in Figs. 3 and 4 via the keyboard 13, the central processing unit 15 causes the central processing unit 15 to have a program embedded in the first ROM 16. And the menu signal of the auxiliary function set as a result of the determination is loaded from the second ROM 17 into the video RAM 28 through the decoder 21a. Then, the video RAM 28 inputs a menu signal of an auxiliary function to the LCD board 30 through the image interface 29 so that the user can view the menu signal of the input auxiliary function on the LCD board 30. Will be displayed. When the user selects one of the menu of the auxiliary function is displayed on the LCD board 30 and to determine the information of the auxiliary function is the set step (S _3), a central processing unit (15) and in the step (S ₄₎ Proceeds to performing the function operation according to the information of the set function, and then ends the operation when the function operation is completed.

For example, when the user selects the telephone number transmission function as shown in FIG. 5 (a) in step S ₂ , the function of the sub menu on the LCD board 30 as shown in FIG. 6 (a) is shown. That is, when the entire phone book is displayed and the phone number of the other party who wants to call is set among the displayed phone numbers, the central processing unit 15 dials information according to the phone number stored in the E ² PROM 20. Is loaded into the first ram 18 or the second ram 19. The central processing unit 15 outputs the loaded dial information to the dial circuit stage 12, and accordingly generates a dialing pulse that matches the dial information input from the dial circuit stage 12. Will be entered in 1). At this time, the outgoing telephone number is displayed on the upper right side of the LCD board 30.

If the call partner is busy, wait for 3 seconds to perform retransmission, and when the call partner establishes a communication line with the dialing pulse, the user picks up the handset 37 and talks to the call partner. .

That is, the call partner is rectified by the rectifier stage 8 through the public communication line (1) and then the rectified voice signal is received in the user's ear through the call circuit stage 9 and the user's voice signal is a call The circuit 9 is input to the telephone of the call partner and the call is made. At this time, when the user releases the handset 37, that is, the hook switch is turned off, the reset stage 26 is operated to initialize the system.

For example, when the user selects the phone book management function as shown in FIG. 5 (b) in step S ₂ , the menu of the auxiliary function, that is, the entire phone book is displayed on the LCD board 30, and the displayed phone is displayed. If the column to be input is set as shown in FIG. 6 (b), the central processing unit 15 stores the Hangul collection function information stored in the second ROM 17 in the first RAM 18 or the first. 2 Ram (19) to load. The loaded Hangul collection function information is transmitted to the video RAM 28 through the decoders 21a and 21b, and the transferred information is displayed on the LCD board 30. Then, the user sets various fonts in the Hangul writing function panel displayed on the screen of the LCD board 30 through the keyboard 13, and the central processing unit 15 sets the new phone number. Information is stored in the E ² PROM 20.

In addition, when the user sets the information processing business function in step S ₂ as shown in FIG. 5 (c), the menu of the auxiliary function on the LCD board 30 as shown in FIG. 6 (c). That is, when the use of the personal computer or the task of using the printer is selected, first, the personal computer 38 to be a host is connected to the first level converter 23, and the printer 39 is connected to the second level converter 24. Connect. The computer 13 requests the necessary information through the keyboard 13 or uses the information stored in the memory device 39 of the personal computer.

At this time, the central processing unit 15 loads the request information transmitted from the personal computer 38 to the display unit 6 via the first level converter 23 and the communication interface 22a. The request information is displayed on the LCD board 30 of (6). On the other hand, when the user requests the copy of the information currently displayed on the LCD board 30 through the keyboard 13, the central processing unit 15 will copy the request information through the printer.

In addition, when the user selects the external communication work function in step S ₂ as shown in FIG. 5 (d), an auxiliary function is displayed on the LCD board 30 as shown in FIG. 6 (d). For example, when the current stock market or regional maps are selected, the IC card 27 having the protocol function set by the contract with the relevant business company is inserted into the socket of the body, and then the central operation is performed. The processing device 15 inputs a communication telephone number signal to the communication interface 22a in accordance with the protocol function of the IC card 27. In addition, the communication interface 22a inputs the communication telephone number signal to the modem transmission terminal 32 via the modem CPI 31. Then, the modem transmission stage 32 outputs a dialing pulse corresponding to the communication telephone number signal input according to the operation control signal of the modem CPI 31 to the signal amplifier stage 34, and the dialing signal from the signal amplifier stage 34. The pulse is amplified and applied to the public communication line 1 through the output transformer 33. In addition, as shown in FIG. 6 (e), which is connected to the data bank of the external communication medium by the protocol function and thus stored in the data bank of the external communication medium, information about the Van service, for example, current stock quotes and regional directions, etc. It reads through the modem unit 5 and displays the read information on the LCD board 30 of the display unit 6.

Here, when the IC card 27 having a protocol function is exchanged and used, various external communication service functions can be performed. When an external input / output device 36, for example, a magnetic stripe reader (MSR) or the like is connected to the interrupt interface 14, the central processing unit 15 performs an operation control with an interrupt processing function.

As described above, in the present invention, the modem unit and the call circuit unit are installed in the microcomputer unit to perform various information exchanges using a public communication network according to a built-in program, whereby the call function is performed by the call circuit unit. Various information exchange functions are performed by the department, which not only improves the convenience of information communication but also improves the multi-function characteristics.

Claims (2)

The call circuit unit 2, which is used to make a call using the public communication line 1, the keyboard unit 3 for controlling the call function of the call circuit unit 2 or inputting various information, and the keyboard unit 3 The central processing unit 15, the memory unit 17 to 20, the decoders 21a to d, the communication interfaces 22a and 22b, and the first second level so as to control operation of various information input through the built-in program. Microcomputer unit 4 having converters 23 and 24 and reset stage 26, modem CPU 31, modem transmission stage 32, and signal amplifier stages for exchanging information signals through the public communication line 1; A modem section 5 having an output transformer 33 and a display section 6 configured to display the function on the screen so that a user can select an information processing function of the microcomputer section 4; In the case of inputting / outputting a telephone number dispensing menu for transmitting a telephone number by the setting signal of the keyboard unit 3 and a plurality of telephone numbers; Performs the functions of the telephone directory management menu, the information processing menu to handle various information by connecting to a terminal, etc., and the external communication menu to handle VAN tasks by connecting to an external communication device having a protocol function. Telephone system using a microcomputer, characterized in that. 2. A telephone system using a microcomputer according to claim 1, wherein an external input / output device (36) can be connected to the interrupt interface (14) of the keyboard section (3).