KR19980052720A - Handset with call rate display - Google Patents

Abstract

The present invention relates to a telephone terminal having a call rate display function for calculating and displaying a call rate. The present invention relates to a trunk line connection detecting means for detecting whether a connection with a large country is established, and a hook detecting means for detecting an on-hook / off-hook state. And a telephone terminal having a DTMF generating means for outputting a DTMF signal corresponding to a predetermined key input, and a ringback tone detecting means for detecting a ringing tone for transmitting a DTMF signal to a large country, wherein a call rate applied according to each region is provided. Billing data information storage means for storing data on the call charges applied according to the usage time and usage time, key input means for setting the call charge display function, time counting means for counting call time, data for calculating call charges Data storage means for storing the call, if the communication path is set up with the other side terminal counts the call time based on the billing data Control means for controlling to calculate and display the call rate, characterized in that it comprises a display means for displaying the call rate status in accordance with the control command of the control means.

Therefore, according to the present invention, it is possible to realize a telephone terminal having a call rate display function that can display a call rate according to a phone call.

Description

Handset with call rate display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone terminal, and more particularly, to a telephone terminal having a call rate display function for calculating and displaying a call rate.

The telephones, which are widely used throughout our living spaces, including homes and businesses, are the most basic necessities of modern people in the information age. Recently, the telephone function as a simple call device has been provided for this role. Increasingly, a variety of convenient functions are being added.

1 is a block diagram showing the internal configuration of a general telephone incorporating a microprocessor.

In the drawing, reference numeral 1 is a trunk line connecting port for connecting an external trunk line, 2 is a ring signal sensing unit for sensing a ring signal applied through the trunk line connecting port 1, and 3 is based on an applied ring signal. Ring generating unit for outputting a predetermined telephone ring to the ring, 4 is a loop (loop) circuit for performing the interface function of the overall communication signal input and output to and from the call path, the loop circuit (4) It consists of a trunk line connection detecting unit 4a for detecting connection with a power station and an interface circuit 4b for performing an interface function of signals between devices.

Further, reference numeral 5 denotes a handset, 6 denotes a call path connection unit for controlling whether or not to connect a call path according to a control signal from the microprocessor 12 to be described later, and 7 denotes a call path connection part for the loop circuit 4. (6) a network circuit for amplifying a signal applied from a counterpart terminal to a predetermined level and performing signal processing for side tone, etc., 8 as the user lifts or releases the handset 5; Hook detection unit for detecting the on or off state of the hook switch to be linked together.

In addition, reference numeral 9 is a memory for storing data necessary for normal operation of the telephone such as a speed dial function, and 10 is a DTMF signal applied through the trunk line connecting port 1, and receives a contracted code signal corresponding thereto. The DTMF receiving circuit 11, which is outputted, is a keypad provided with numeric keys and function keys used by the user to dial or input specific function execution commands.

On the other hand, reference numeral 12 is a microprocessor for controlling the overall operation of the device based on the signal detected by the communication line connection unit 6 and the trunk line connection detection unit 4a, etc., 13 is input through the keypad 11 The DTMF generation circuit outputs a DTMF (Dual Tone Multi-Frequency) signal corresponding to a predetermined key input according to a control command of the microprocessor 12.

That is, in the general telephone having the above-described configuration, when the user lifts the handset 5 to make a telephone call, the microprocessor recognizes the off state of the hook switch to be interlocked through the hook detection unit 8 so as to make the call. By turning on the connection part 6, the call path is connected. Then, when the telephone number is input through the keypad 11 by the user, the microprocessor 12 generates a signal corresponding to the key input through the DTMF generation circuit 13 to be transmitted through the trunk line. Therefore, in the telephone exchange which is not shown, a call is made by connecting to a telephone corresponding to a telephone number.

On the other hand, in the modern society, information transmission is frequently performed by the phone having the above-described configuration, and thus unexpected expenses can be generated without thinking about the call charge due to the excessive call.

Therefore, there is a need for a telephone that adds a function of displaying a call charge according to a telephone call of a used telephone, thereby limiting excessive calls.

Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide a telephone terminal having a call rate display function that calculates and displays a talked rate.

1 is a block diagram showing the internal structure of a general telephone with a built-in microprocessor.

Figure 2 is a block diagram showing the configuration of a telephone terminal having a call charge display function according to an embodiment of the present invention.

FIG. 3 is an operation flowchart for explaining the operation of the apparatus of FIG.

*** Explanation of symbols for the main parts of the drawing ***

1: trunk line connection port 2: ring signal detection unit

3: ring generator 4: loop circuit

4a: trunk line connection detecting unit 4b: interface circuit

5: handset 5a: handset

5b: handset 6: call path connection

7: network circuit 8: hook detection unit

9: memory 10: DTMF receiving circuit

11 keypad 12 microprocessor

13: DTMF generation circuit 20: Ringback-tone detector

21: key input section 21a: function keys

21b: numeric key 22: billing data information storage unit

23: clock generator 24: counter

25: data storage unit 26: flag register

27: microprocessor 28: billing calculation unit

29: display unit

Telephone terminal with a call charge display function according to the present invention for achieving the above object is a trunk line connection detection means for detecting whether the connection with the power, hook detection means for detecting the on-hook / off-hook state, predetermined key input A telephone terminal having a DTMF generating means for outputting a DTMF signal corresponding to and a ringback tone detecting means for detecting a ringing tone for transmitting a DTMF signal to a large country, the call rate and time used according to each region. Billing data information storage means for storing data on the call charges applied according to the present invention; key input means for setting the call charge display function; time counting means for counting call durations; and for storing data for calculating call charges. When the call path is established with the data storage means and the other terminal, the call time is counted and the call fee is calculated based on the billing data. Control means for controlling so as to display, in response to a control command of the control means including display means for displaying a call charge state is characterized in that configured.

According to the present invention having the above-described configuration, the call charge according to the time used is displayed whenever the user uses the telephone.

Hereinafter, the operation of the apparatus according to the present invention will be described with reference to the drawings.

2 is a block diagram showing the configuration of a telephone terminal having a call charge display function according to an embodiment of the present invention.

In the drawings, the same parts as those in FIG. 1 are given the same reference numerals, and detailed description thereof will be omitted.

In FIG. 2, reference numeral 20 is a ringback-tone detector for detecting a ringing tone received from a power station in transmitting a DTMF signal corresponding to a telephone number key input, and 21 is a ringback-tone detection unit. As a key input unit, the function key 21a and the numeric keys 21b are included. In addition, the key input unit 21 sets and inputs an area code of the telephone terminal currently used.

In addition, reference numeral 22 is a billing data information storage unit that stores data on the call rate applied according to each region and the call rate applied according to the usage time, and 23 is a clock for generating a clock for counting talk time. The generation unit 24 is a counter for counting clocks generated through the clock generation unit 23, and 25 is a data storage unit for storing the calculated call rate data.

Reference numeral 26 denotes a flag register. When off-hook is detected through the hook detection unit 8, the state flag is set to 1, and when the off-hook is detected, a DTMF signal is sent and a ring-back tone is detected. Is set to 10. If the call path is set as the opposite terminal is off-hook, the status flag is set to 11. If the line is switched off and the line is switched, it is set to 0.

Further, reference numeral 27 is a microprocessor for controlling to display and calculate the call rate based on the counted call time and the stored billing data when the call path is established with the opposite terminal and the status flag is switched to 11. A billing calculation unit that calculates a call charge by performing calculation under the control of the microprocessor 27, and 29 is a display unit that displays the charge calculated under the control of the microprocessor 27.

Next, the operation of the device having the above configuration will be described with reference to the operation flowchart shown in FIG.

First, the user sets the call charge display function through the key input unit 21. After pressing the function key 21a, the user inputs the area code of the currently used telephone terminal through the numeric keys 21b. Set the function for the display.

When the call charge display function is set in the above-described process, the handset 5 is lifted by the user. When the off-hook is detected according to the off state of the hook switch to be interlocked (step ST1), the microprocessor 27 flags. After setting the state flag of the register 26 to 1, the CO line connection detection unit 4a detects the CO line connection (step ST2), and determines whether there is a DTMF signal transmission according to the user's key input. (ST3 step), if there is a DTMF signal corresponding to the telephone number key input, it is determined whether a ringback tone is detected from the power station (ST4 step), and if a ringback tone is detected, the flag register 26 is detected. Set the state flag to 10.

In addition, because the other party's phone is off-hook and the loop circuit is formed because the other party is answering the call (ST5 step), it is determined whether or not the other party is not answering the call. If the furnace is not set, the state flag of the flag register 26 is set to 0, and then the line is switched to end.

On the other hand, when the communication path with the power is established, the microprocessor 27 sets the state flag of the flag register 26 to 11, and then drives the clock generator 24 and the counter to start counting the talk time. (ST6 stage). When it is confirmed that the call path is set, the clock is generated through the clock generator 23, and the clock generated by the counter 24 is counted, thereby making the time coefficient.

Subsequently, the call rate is calculated based on the call time counted through the billing calculation unit 28 and the data stored in the billing data information storage unit 22 (step ST7). The data is stored in the storage unit 25 (step ST8).

Thereafter, the microprocessor 27 determines whether the call path with the power is turned off through the trunk line connection detecting unit 4a (step ST9), and when the call is detected with the power with the power, the flag register 26 is detected. After setting the status flag to 0, the call charge data finally calculated by the data storage unit 25 is read (step ST10) and an on-hook is detected through the hook detection unit 8 (step ST11). 29) the call rate is displayed (ST12 step).

Therefore, it is possible to check the call charge according to the phone call.

That is, in the above embodiment, when the user sets the call rate display function through the key input unit 21, the call rate according to the user's phone call is displayed on the display unit 29 whenever the user uses the phone.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, it is possible to realize a telephone terminal having a call rate display function, which is capable of displaying call rates according to phone calls.

Claims (1)

Trunk line connection detecting means for detecting connection with a power station, hook detecting means for detecting on-hook / off-hook status, DTMF generating means for outputting a DTMF signal corresponding to a predetermined key input, and sending a DTMF signal to a power station A telephone terminal having ring back tone detection means for detecting a ringing tone; Billing data information storage means that stores data on the call rate applied according to each region and the call rate applied according to the usage time; Key input means for setting a call charge display function, Time counting means for counting talk time, Data storage means for storing the data calculated the call charge, Control means for controlling to calculate and display the call charge based on the billing data by counting the call time when the call path is established with the other terminal, And a display means for displaying a call charge state according to a control command of the control means.