JPS63301664A - Card telephone system - Google Patents

Abstract

PURPOSE:To reduce the equipment of a telephone set, to attain a light and low cost telephone and to simplify an operation by using an IC card for a private card by executing the display of the residual times of the card and the dialing input of a speech destination. CONSTITUTION:In the IC card, a function 21 for inputting the telephone number of a remote side, a function 22 for displaying the call frequency and a function 23 for substracting the call frequency for every generation of a metering pulse are provided to simplify the function of a telephone set main body. Thereby, the compact, light and low cost telephone set main body can be realized to lower the cost of the entirety of system and previously input the telephone number, so that the efficiency for using the telephone set can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a card telephone system using an IC card as a prepaid card.

Summary of the Invention The card telephone system according to the present invention uses an IC card as a prepaid card, and displays the card's remaining power and dials the destination of the call using the IC card.

As a result, the telephone equipment can be reduced, making it lightweight and inexpensive, and the manual dialing is replaced with an IC card (thereby, the operation of the telephone is simplified).

(C1 Prior Art) Card telephones have been put into practical use for paying telephone charges using card data.This card telephone accepts prepaid cards made of magnetic cards and allows calls for a period of time corresponding to the frequency of the card. It is what makes it possible.

(d1 Problem to be solved by the invention) However, like conventional public telephones, a dialing device is required, and a display to display the remaining card power is also required.In addition, many card telephones are prepaid telephones. In addition to accepting cards, it is also possible to make calls using regular coins, which poses the problem of making the device larger and more expensive, increasing the cost of the entire system.Furthermore, IC cards are becoming more and more practical. Today, there has been a desire to propose a card telephone system that can be operated more simply using an IC card.

This invention was made in view of these problems.
Using an IC card as a prepaid card,
To provide a card telephone system in which the functions of a telephone can be reduced by providing means for setting a telephone number to be called in advance and means for displaying the remaining number of cards.

(Means for Solving Problem e1) This invention has a frequency storage area for storing the number of callable frequencies and a destination telephone number setting means for setting a destination telephone number, and when connected to a telephone. , a display means for displaying the contents of the frequency storage area; a transmitting means for transmitting the telephone number set by the destination telephone number setting means to the telephone; and a display means for displaying the contents of the frequency storage area; subtracting means for subtracting the stored contents of the IC card; dialing means having an IC card reader for accepting the IC card and dialing the destination telephone number received from the IC card; The present invention is characterized in that it has a card telephone equipped with a charging pulse transfer means for transferring the charged charging pulse to an IC card.

lf) Operation The card telephone system of the present invention operates as follows. When a user attempts to make a telephone call, the telephone number of the destination is set in advance on the IC card by the destination telephone number setting means. When this IC card is inserted into an IC card reader of a card telephone, the IC card transmits the telephone number of the called party and the contents stored in the frequency storage area to the card telephone. The card telephone dials the received destination telephone number using a dialing means, and when the line is set up, transmits a charging pulse to the 10 card according to the call time. The call count is subtracted on the IC card side, the remaining count is displayed on the display means, and the remaining count is managed.

This allows dialing, which was previously done with telephones, to
The remaining power can be displayed and managed using an IC card, making it possible to downsize the phone.

(g) Embodiment FIG. 3 is an external view of a card telephone used in an embodiment of the present invention. An IC card insertion slot 3 into which an IC card 2, which is a prepaid card, is inserted is provided on the top surface of the card telephone main body 1.

The inside of this IC card insertion slot 3 can be viewed from the outside through a display window 4. That is, the IC card 2 inserted from the IC card insertion slot 3 can be viewed from the display window 4. There is an LC on the surface of the IC card 2 as shown in FIG.
A D display 22 is provided, and the contents displayed on this display can be viewed from the outside. The remaining power of the IC card is displayed on the LCD display 22. Further, the front face of the telephone body is provided with a coin slot 5.6 for inserting 100 yen coins and 1000 yen coins, and a coin return lower for returning unused coins. Further, a hook 9 is provided on the left side of the telephone, and an unused handset 10 is attached to this hook.
is suspended.

FIG. 4 is a block diagram of the control section of the card telephone. The CPU 12, which is a control device, has a memory 13 in which programs, data, etc. are stored. An I10 control unit 14 that detects whether the hook 9 is on or off, an NCUI 5 that sends dialing pulses to the line, and an IC card interface 16 that transmits and receives data to and from an IC card. An IC card ejection mechanism 17 that ejects an inserted IC card and a coin discrimination section 18 that discriminates an inserted coin are connected. A telephone receiver 10 is connected to the NCU, and the telephone line and the telephone receiver 10 are connected during a normal call.

FIG. 5 is an external view of the IC card inserted into the card telephone. The figure (A) shows the front side, and the figure (B) shows the back side. A keyboard 21 including a numeric keypad and calculation keys and an LCD display 22 are provided on the surface of the IC card 2. The telephone number of the person to be called is entered using the keyboard 21, and the entered telephone number and the remaining number of telephone calls are displayed on the LCD display 22. A built-in IC terminal 20 is formed on the back side of the IC card 2. When this IC card is inserted into the IC card insertion slot 3, this terminal 20 is connected to a contact provided inside the telephone, and transmits and receives data, power, etc.

FIG. 6 is a block diagram of the control section of the IC card.

The built-in IC includes a main control unit 23 including a CPU and ROM.
．． A RAM 24 and an LCD driver 25 are formed, the keyboard 21 is connected to the CPU, and the LCD display 22 is connected to the LCD driver 25.

FIG. 7 is a partial configuration diagram of the RAM 24.

This RAM 24 is set with a frequency storage area (Ml) in which the number of degrees that can be called with this IC card is stored, and a destination telephone number storage area (M2) in which the destination telephone number input from the keyboard 21 is stored. There is. The contents of the frequency storage area (Ml) are set to be added by an adder, which is a special device, and are subtracted one time at a time during a call by the telephone.

FIG. 1 is a flowchart showing the operation of the card telephone. FIG. 3A shows the main routine. First, when the receiver lO is picked up and the hook 9 is turned off, this operation starts, and step n1 (hereinafter step ni; 4-n
It's called i. ) until the IC card is inserted.

When the IC card is inserted, the device communicates with the IC card and receives data including the number of available calls and the telephone number of the destination (n2). Enter the destination phone number received on n2 from NCU
15 (n3) and waits until there is a response from the called party (n4). If there is a response, the call is started and the process proceeds to n5 and below. At n5, the process waits until a billing pulse is received via the line. A call is being made during this time. When a charging pulse is received, the charging pulse is transferred to the IC card (n6), and the resulting new number of remaining points is received (n6).
7).

It is determined at n8 whether the received remaining power is O or not, and if it is not O, the process returns to n5, and if it is 0, the IC card is ejected (n9) and then the process proceeds to nlo.

cut off n15 when a new IC card is inserted
Then, the data of the IC card is received and it is determined whether the card has any remaining power (n16). If there is a remaining power, proceed to n5; if there is no remaining power, proceed to n9. When a coin is inserted, the process proceeds to n1B and the line is turned off when the coin is used as a telephone call.

FIG. 3B shows a hook-on interrupt operation. The hook-on interrupt operation is the highest priority interrupt operation, and the process immediately proceeds to this operation even if any other operation is being performed. When the operation starts, the line is turned off at n21, the inserted IC card is ejected, and the unused coins that have been inserted are ejected (n22), and the operation ends.

FIG. 2 is a flowchart showing the operation of the IC card. First, at n30, the telephone number of the destination is input. The input telephone number is stored in the called destination telephone number storage area (M2) (n31) and waits until connection with the telephone is established (n32). When the IC card is inserted into the IC card insertion slot 3 of the card telephone 1 and starts communicating with the control section of the telephone, the remaining power is sent to the telephone.n3
3) Display this remaining power on the LCD display 22 (
n34). Next, send the destination phone number to your phone.
35), enable the card telephone l to make a call.

After this, the system waits until it determines whether a charging pulse transmitted from the telephone is received or the IC card is ejected from the telephone, and when a charging pulse is received, the power is subtracted from the power storage area (Ml). n37), sends the new remaining power to the telephone (n38), and
Change the display on the CD display 21 (n39) and return to n36. Furthermore, when the IC card is ejected, the operation of the IC card automatically ends because the call ends or the usable power of the IC card reaches O.

The destination telephone number storage areas M2 and n30) and n31 correspond to the destination telephone number setting means of the present invention, the LCD display 22 and n30.38 correspond to the display means of the present invention, and the n35 corresponds to the display means of the present invention. This corresponds to the transmitting means of the present invention, and the n37 corresponds to the subtracting means of the present invention. Further, the NCU 15 and n3 correspond to the dialing means of the present invention, and the n6 corresponds to the billing pulse transfer means of the present invention.

(h) Effects of the Invention As described above, according to the present invention, the IC card has the function of inputting the telephone number of the other party, the function of displaying the frequency, and the function of subtracting the frequency every time a billing pulse occurs. , the functions of the phone main body can be simplified. This makes it possible to make the phone itself smaller, lighter, and cheaper, lowering the price of the entire system, and improving the efficiency of using the phone by allowing the phone number to be entered in advance. Can be done.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the operation of a card telephone used in a card telephone system according to an embodiment of the present invention, with (A) showing the main routine and (B) showing the main routine.
2 shows a hook-on interrupt operation, FIG. 2 is a flowchart showing the operation of the IC card used in the card telephone system, FIGS. 3 and 4 are an external view of the card telephone and a block diagram of the control unit, and FIG. Figure 5 (A)/(B)
6 is an external view of the IC card and a block diagram of a control section, and FIG. 7 is a partial configuration diagram of the memory of the IC card. 1-card telephone, 2-IC card, 3-IC card insertion slot, 4-display window, 21-keyboard, 22-LCD display.

Claims (1)

[Claims] (1) It has a power storage area for storing the number of available callable powers and a call destination telephone number setting means for setting a call destination telephone number, and a display that displays the contents of the power power storage area when connected to a telephone. a transmitting means for transmitting the telephone number set by the called destination telephone number setting means to the telephone; and a subtracting means for subtracting the stored content of the frequency storage area when a billing pulse is transmitted from the telephone. an IC card having an IC card; a dialing means having an IC card reader for accepting the IC card and dialing a destination telephone number received from the IC card; and a charging pulse for transferring a charging pulse received from the line to the IC card. A card telephone system comprising: a transfer means; and a card telephone set.