KR100217509B1 - Charging method for public cellular phone - Google Patents

Abstract

The present invention relates to a mobile public telephone billing method for receiving a fee corresponding to a usage time of a digital wireless mobile payphone terminal mounted on public transportation from a service center and displaying the fee on a display device of a billing indicator.

A feature of the present invention is a method for calculating and charging a charge in a mobile public communication system including a handsfree kit module, a charging indicator, and a terminal, comprising: determining whether a public telephone is used in a system initialization step, and key input of a telephone number Receiving the calculated billing data corresponding to the counted talk time until the end of the call if the call is established by establishing a call connection, and if the received charge is 0 condition, after outputting the advertising message of the sponsor, the previous public If the usage fee is not 0 on the display indicating the charge received in the above step, and if the usage fee is not 0, performing the step of returning to the determination step of the condition where the previous usage fee is 0 after inputting the reset according to the fee payment It involves doing.

Description

How to charge for mobile phone

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital wireless mobile payphone terminal mounted on public transportation means, and more particularly, a mobile payphone for receiving a charge corresponding to a usage time of a wireless payphone from a service center and displaying it on a display device of a billing indicator. It is about charging method.

Recently, the rapid spread of personal mobile phones has led to an increase in the proportion of mobile phones installed in vehicles. As a result, a large number of vehicle drivers can exchange radio waves with the other party while the vehicle is in operation. At this time, the vehicle driver can try to talk with the other party while holding the steering wheel with one hand and the mobile phone with the other hand. The driver's attention is distracted because of the need to make a phone call, which is very likely to cause a traffic accident.

As a countermeasure against this, hands-free devices have been well-received by vehicle drivers to enable them to talk without using the phone body when using mobile phones in vehicles. have.

Hands free kit module of hands free device is composed of signal amplifier, microphone and speaker, and portable terminal is attached to it so that data port and hands free kit module of terminal are connected to communication port without making handset.

Incorporating a public telephone block into the handsfree kit module enables the construction of a mobile public telephone system in public transportation such as taxis and buses.

Existing mobile payphones constructed under such a concept use analog modulation method. In the wireless mobile payphone method, it detects the modulation signal generated when the call is connected and determines the starting point of the call. I charge a call.

However, the existing call charge method is less reliable because of the possibility of error in the analog signal processing.

In another conventional call rate calculation method, a simple call rate is calculated by the main body of a mobile terminal for a public telephone connected to a hands free kit module, and a value (call rate) obtained here is displayed on a display.

This self call rate calculation is not only different from the actual rate calculation value of the mobile phone service center, but also requires a separate hardware structure and a calculation algorithm for the call rate calculation. In particular, the display size of the terminal is narrow. There is a disadvantage that the characters appear too small and the recognition is inconvenient.

An object of the present invention is to receive a charge corresponding to the usage time of the wireless public telephone in the digital wireless mobile payphone terminal mounted on the public transportation means from the service center to display it on the display of the billing indicator so that the user can easily recognize it. The present invention provides a method for charging a mobile payphone.

A feature of the present invention is a mobile public communication system including a handsfree kit module, a charging indicator, and a terminal, the initializing of the system, determining whether a public telephone is used in the initializing of the system, and a key input of a telephone number. And if the call is established and the call is established, receiving the calculated billing data corresponding to the talk time from the mobile communication service center by timing the talk time until the end of the call, and displaying the billing received at the step. If the usage fee is 0 on the display, the advertisement message of the sponsor is printed, and then the user returns to the previous judgment on whether to use the public telephone. If the usage fee is not 0 on the display indicating the charge received in the above step, the fee is not paid. After entering the reset, return to the judgment step of the condition that the previous charge is 0. There the mobile pay phone charging method is to run sequentially.

1 is a schematic block diagram of a mobile public telephone system mounted on public transportation means using a hands free kit device to implement the present invention.

2 is a flowchart illustrating a method of charging a usage fee in a mobile public telephone system according to the present invention.

* Explanation of symbols for main parts of the drawings

1: vehicle battery 2: voltage stabilization circuit

3: noise filter 4: hands-free circuit

5: terminal charging circuit 6: interface

7: Hands free microcomputer 8: Hands free kit module

9: handheld terminal 10: terminal microcomputer

11: terminal battery 12: key input circuit

13 display 14 transmission and reception circuit

15: Charging indicator 16: Communication port

17: charge indicator micom 18: display

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

1 is a hardware configuration diagram of a mobile payphone system showing an organic coupling relationship between a hands-free device, a charging indicator and a mobile communication terminal for carrying out the present invention. As referred to herein, the mobile public telephone system to be applied to the present invention is largely composed of a handsfree kit module 8, a charging indicator 15, and a portable terminal 9.

The handsfree module 8 is configured such that the power supply voltage of the vehicle battery 1 is applied as the system operating voltage, and the portable terminal 9 is mounted and detached from the handsfree module 8 at its input / output data port. Is connected and disconnected via the data interface 6. Alternatively, the portable terminal and the handsfree module may be connected by voice and data transmission cables.

The hands-free kit module (8) is a voltage stabilization circuit (2) which serves to stabilize the DC voltage applied from the vehicle battery (1) to a constant value, and removes the power noise components included in the output of the voltage stabilization circuit A noise filter 3 for applying an operating voltage to the hands-free circuit 4 and the terminal charging circuit 5 and a signal of a portable terminal input / output through the interface 6 are processed to charge the hands-free circuit 4 and the terminal. A hands-free microcomputer 7 for controlling the circuit 5 and determining the system status is included.

The portable terminal 9 inputs a terminal microcomputer 10 for processing digital signals, a terminal battery 11, a telephone number, and the like, and a key input circuit 12 for selecting various functions, and an input telephone. And a display 13 for displaying numbers and various functions, and a transmission / reception circuit 14 for transmitting and receiving digital signals.

The charge indicator 15 includes a serial data communication port 16, a money indicator micom 17 and a charge indicator display 18. For example, the communication port 16 may use RS232C.

The charging method according to the present invention in the mobile public telephone configured as described above is as follows.

First, when the DC voltage of the vehicle battery 1 is applied to the hands-free kit module 8 mounted on the vehicle, it is converted to a constant voltage through the voltage stabilization circuit 2 and then the hands-free circuit 4 through the noise filter 3. The terminal charging circuit 5 is applied as an operating voltage. At this time, the noise filter 3 serves to bypass the noise component flowing in the power supply voltage supply line to the ground side.

When the voltage of the vehicle battery is applied to the handsfree module, the microcomputer 7 of the handsfree module 8 determines whether the portable terminal 9 is mounted or coupled to the handsfree module through the interface. In the combined condition, the hands-free circuit 4 is simultaneously operated to control the operation of the terminal charging circuit 5 and the hands-free system is initialized to enter the charging mode of the terminal built-in battery 11 and the public telephone call standby mode.

In this state, the terminal microcomputer 10, which is a system control processor of the portable terminal 9, determines whether the public telephone user uses the terminal as a signal input through the key input circuit 12 and is selected on the display 13. The terminal function and the keyed telephone number are displayed and further, the call connection is executed through the transmission / reception circuit 14 based on the input data.

If you try to make a mobile phone call in handsfree kit mode and try to make a call or call with the other party, the handsfree microcomputer (7) recognizes and drives the handsfree circuit (4). Wireless mobile communication will take place.

If a handset for a public telephone is connected to the handsfree kit, i.e., the terminal is connected to a voice signal transmission / reception connector cable, it functions as a public telephone.If the terminal is disconnected from the handsfree kit set, the terminal is a personal terminal. A program for exerting a function is input into the microcomputer in the terminal, and the digital portable terminal can be used for either personal or public telephone based on the judgment of the connection cable between the terminal and the handsfree kit set recognized by the microcomputer. It can also be designed to.

On the other hand, when calling from a mobile phone to another mobile phone or when making a call from a mobile phone to a general fixed phone, if the terminal receives this signal based on a tone off message generated by a digital code signal, it confirms that it has received a signal. As a message, it sends an alert message to the base station, removes the ringtones from the phone itself, and then enters the call state.

This is the billing start time and the release order that occurs when the call ends is billing end time.

For example, if the time entered into the call state is t1, and the charging end point is t2, the total charge is divided by the above t2-t1 by the unit time (T) and multiplied by the unit rate (A) to obtain the premise call rate.

The calculated call money at the mobile communication service center is received and processed online by the terminal as digital data, and then input to the charge indicator microcomputer 17 via the RS 232C serial communication port 16 in the charge indicator 15. The RS232C serial communication port consists of four pin ports of the Vcc, GND, Tx, and Rx terminals.

Accordingly, the display 18 in the billing indicator having a large charge output screen shows the usage charge immediately after the end of the wireless mobile call, so that the user can easily see and identify it.

On the LCD display of the mobile communication terminal, a plurality of pieces of information such as a current terminal mode, a key-input telephone number, talk time, and billing information are displayed on one screen, and only the data related to the call rate is selected on the display of the billing indicator. It is necessary to enlarge the display.

To do this, data identification is required. When data communication between the data display device and the terminal, the byte value of display type is set separately as shown in Table 1 below, and it is inquired during data communication between the data display device and the device. Selectively extract specific data through.

As shown in Tables 1 and 2 above, the phone number is displayed only when connected to the standby state on the LCD display of the terminal itself, so that the call state and the previous call rate are displayed on the display of the charging indicator by enlarging the LCD screen of the terminal. Only the display status is displayed.

However, if no one uses the public telephone mobile terminal from the standby state, the advertising message is displayed because the usage fee is 0 won before payment, and after the use, the amount used before payment is displayed because the usage amount is not 0 won. do. For this operation, the terminal and the billing display period serial communication data should include the amount used before payment in addition to the data of the terminal LCD.

Therefore, the display of the billing indicator displays the actual usage of the wireless public telephone bill and usage time, which is transmitted from the mobile service provider on-line, even if no calculation hardware configuration and calculation algorithm are installed. Thus, the user of the wireless mobile communication terminal can easily recognize his / her call history.

As described above, the present invention provides a billing indicator for receiving a real information on the usage fee from a mobile communication station for a telephone user in a wireless mobile public telephone system mounted on public transportation to provide a wireless mobile communication service to a public transportation user. The user will be informed through the large display window, and the user's convenience will be provided. In addition, the advertising text by the sponsor will be displayed through the wide LCD display of the billing indicator when the user fee is settled. The unique effects that can be obtained will appear.

Claims (1)

In a wireless mobile payphone system including a handsfree module, a charging indicator, and a terminal coupled to each other through a serial data communication port and mounted on public transportation, whether the public phone is used in the initializing of the system and in the initializing of the system. If the call is established by executing the call connection according to the key input of the phone number, if the call is established, the call time is counted until the end of the call, and the billing data calculated based on the call time is received and received by the mobile communication service center. And selectively picking up the billing-related data received in the step and displaying it on the display of the billing indicator; and if the usage fee displayed on the display indicating the billing received in the step is zero, Determining whether to use a public pay phone after printing an advertisement message Returning to the system and if the fee is not 0 on the display showing the charge received in the above step, inputting the reset according to the fee payment and returning to the judgment step of the condition of the previous fee is 0 and executing the last step. Mobile payphone charging method comprising a.

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