KR20030096647A - System for interfacing between dtmf standard phone and wireless transceiver and method thereof - Google Patents

Abstract

PURPOSE: A method for interfacing a DTMF standard telephone with a wireless transceiver is provided to detect duration of a transmitted DTMF tone, and to recognize as a final number if the duration is more than a certain time, thereby transmitting a telephone number to a telephone network system. CONSTITUTION: A user inputs a telephone number through a key input unit(S201). The inputted telephone number is transmitted to a controller by converting into DTMF data, and the controller checks whether duration of the DTMF data is more than predetermined time(S202). If so, the controller converts the DTMF data into digital data, and reads the entire stored digital data(S203). The controller checks whether digits of the entire digital data are more than predetermined numbers(S205). If so, the controller transmits the digital data to a base station as telephone number data(S206). The user receives a call service by the telephone number(S208).

Description

SYSTEM FOR INTERFACING BETWEEN DTMF STANDARD PHONE AND WIRELESS TRANSCEIVER AND METHOD THEREOF

The present invention relates to an interface system and method of a DMF standard telephone and a wireless transceiver, and more particularly, by connecting a general telephone of a dual tone multi frequency scheme in a narrow band wireless local loop terminal. The present invention relates to an interface system and method of a DMF standard telephone and a wireless transceiver for converting a DTMF signal into a digital signal and transmitting the same to a base station.

In general, a dual tone multifrequency (DTMF) is a number (signal) information transmitted from a telephone, which is used in an electronic exchange, and when a corresponding number of the telephone is pressed, a complex frequency signal is applied to the exchange and the exchange exchanges it. It is decoded and converted into digit information.

The conventional telephone interface system, as disclosed in Korean Patent No. 1986-6608, is a radio transceiver and telephone used in a telephony communication system capable of wirelessly communicating with a master cell switching center that is a part of a telephone network. A telephone interface system for coupling a telecommunication device, comprising: telephone coupling means operatively coupled to a telecommunication device to provide a two-way communication link to a telephone; Transceiver coupling means operatively coupled to the radio transceiver to provide a bidirectional communication link to the radio transceiver; Operatively coupled between the telephone coupling means and the transceiver coupling means to receive a group touch tone or rotary dial telephone number from the telephone coupling means and convert the group telephone number into digital data to convert the digital data into the transceiver coupling means. Telephone number digital conversion means for providing; Determination means coupled to the telephone number digital conversion means for determining a final number of a group telephone number provided to the transceiver coupling means, transmission signal means coupled to the determination means for providing a transmission signal to the transceiver coupling means; Call detection means coupled with the transceiver coupling means for detecting an incoming call signal provided in the telephone coupling means; Off hook detection means operatively coupled to the telephone coupling means to detect an off hook signal provided to the telephone coupling means; An audio channel operatively coupled with the telephone coupling means and the transceiver coupling means and providing a two-way audio signal path between the telephone coupling means and the transceiver coupling means; And telephone simulation means coupled with the telephone coupling means for providing an audio frequency ring tone and a dial tone signal.

In addition, the telephone number transmission apparatus according to the prior art, as disclosed in Korean Patent No. 1999-61711, a button unit for inputting a telephone number; A hook switch for inputting a flash signal indicating that the input of the telephone number is finished; A dial buffer for temporarily receiving a telephone number from the button unit; And control means for receiving a flash signal from the hook switch and transmitting a telephone number stored in the dial buffer to a base station.

However, according to the above-described Korean Patent No. 1986-6608, since a certain elapsed time is required to recognize that the last button is pressed, the user has to wait for a certain time. In addition, according to the above-described Korean Patent No. 1999-61711, after inputting all the numbers through the buttons, it is necessary to press the hook switch, which is not only cumbersome but also difficult to distinguish from using the hook switch for canceling a call.

In order to solve the above problems, the present invention is a method for recognizing the last digit of the telephone number, by detecting the duration of the DTMF tone transmitted from the telephone to the terminal by recognizing it as the last number if it lasts for a predetermined time, An object of the present invention is to provide an interface system and method of a DMF standard telephone and a wireless transceiver for transmitting a telephone number to a network system.

1 is a block diagram showing an interface system of a DMF standard telephone and a wireless transceiver according to an embodiment of the present invention;

2 is a flowchart illustrating an interface method of a DTF standard telephone and a wireless transceiver according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: standard telephone unit 120: wireless transceiver

In order to achieve the above object, the interface system of the DTF standard telephone and the wireless transceiver of the present invention, the standard telephone unit for receiving a telephone number through a key input and outputs a corresponding DTMF signal; And receiving the DTMF signal from the standard telephone unit, measuring the duration of the DTMF signal, converting the digital data into a digital data, and storing the converted DTMF signal. It includes a wireless transceiver for outputting the stored digital data to the base station.

In addition, the interface method of the DTF standard telephone and the wireless transceiver of the present invention to achieve the above object, the step of inputting a telephone number; Converting the input telephone number into DTMF data, and checking whether the duration of the DTMF data is longer than a predetermined time; When the duration of the DTMF data is greater than or equal to a predetermined time, after the DTMF data is converted into digital data and stored, reading all stored digital data; Digital data is transmitted to the base station as telephone number data; And receiving a call service by phone number.

Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the technical idea of the present invention. .

1 is a block diagram illustrating an interface system between a DMF standard telephone and a wireless transceiver according to an embodiment of the present invention, and includes a standard telephone unit 110 and a wireless transceiver 120.

The standard telephone unit 110 receives a telephone number through a key input by a user and outputs a corresponding DTMF signal to a wireless transceiver 120 which will be described later. Here, the standard telephone unit 110 includes a key input unit 111 and a first interface unit 112.

The key input unit 111 mounted in the standard telephone unit 110 receives a phone number from the user and outputs the telephone number to the first interface unit 112 described later.

In addition, the first interface unit 112 mounted in the standard telephone unit 110 receives a telephone number from the key input unit 111, converts it into a corresponding DTMF signal, and wirelessly transmits / receives the following DTMF signal. It serves to output to 120.

Meanwhile, the wireless transceiver 120 receives the DTMF signal from the standard telephone unit 110, measures the duration of the DTMF signal, and converts the digital data into digital data when the DTMF signal has a duration less than a specific time. And, if it has a duration of more than a certain time, it serves to output the stored digital data to the base station (not shown). Here, when the digital data is three digits or more, the wireless transceiver 120 transmits the stored digital data to a base station (not shown) as it is, and when the digital data is less than three digits, from 00 to 99. It transmits the telephone number stored in the address corresponding to the digital data value among the stored telephone numbers of the base station (not shown). In this case, the wireless transceiver 120 includes a second interface 121, a controller 122, a dial buffer 123, a memory 124, and a transceiver circuit 125.

The second interface unit 121 mounted in the wireless transceiver unit 120 serves to transfer the DTMF signal input from the standard telephone unit 110 to the controller 122 to be described later.

In addition, the control unit 122 mounted in the wireless transceiver 120 receives the DTMF signal from the second interface unit 121, measures the duration of the DTMF signal, and has a duration less than a specific time. In this case, the digital data is converted into digital data and stored in the dial buffer 123, which will be described later, and when it has a specific time or longer, the digital data stored in the dial buffer 123, which will be described later, is output to the transmission and reception circuit 125, which will be described later. It plays a role. Here, when the digital data input from the dial buffer 123 described later has three or more digits, the controller 122 outputs the digital data to the transmission / reception circuit 125 to be described later as it is, and the digital data is less than three digits. In this case, it functions to output the telephone number stored at the address corresponding to the digital data value among the stored telephone numbers from 00 to 99 in the memory 124 to be described later to the transmission / reception circuit 125 to be described later. Here, the specific time is preferably 2 seconds.

In addition, the dial buffer 123 mounted in the wireless transceiver 120 serves to store digital data output from the controller 122.

On the other hand, the memory 124 mounted in the wireless transmission and reception unit 120, preferably, has an address from 00 to 99, stores a phone number for each address, and the controller 122 stores the digital data It receives the input and outputs the phone number data of the corresponding address to the control unit 122.

In addition, the transceiver circuit 125 mounted in the radio transceiver 120 serves to output data received from the controller 122 to a base station (not shown).

2 is an operation flowchart showing an interface method of a DMF standard telephone and a wireless transceiver according to an embodiment of the present invention.

First, a telephone number is input by the user through the key input unit 111 (S201).

The telephone number input in the step is converted into DTMF data and transmitted to the control unit 122, and the control unit 122 checks whether the duration of the DTMF data is greater than or equal to a predetermined time T (S202).

When the duration of the DTMF data is greater than or equal to a predetermined time T, the controller 122 converts the DTMF data into digital data and stores it in the dial buffer 123, and then stores all digital data stored in the dial buffer 123. The data is read (S203). Here, about 2 second is preferable for the said predetermined time.

If the duration of the DTMF data is less than a predetermined time T, the control unit 122 converts the DTMF data into digital data and stores it in the dial buffer 123, and then returns to the step of inputting a key. Go (S204).

Thereafter, the controller 122 checks whether or not the number of digits of the entire digital data is equal to or greater than the predetermined number K (S205).

When the number of digits of all the digital data is more than the predetermined number K, the digital data is transmitted as the telephone number data to the base station (S206).

If the number of digits of all the digital data is less than the predetermined number K, the telephone number data stored in the area having the digital data value of the memory 124 as the address is transmitted to the base station (S207).

Thereafter, the user receives the call service by the telephone number (S208).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to the drawings shown.

The present invention provides a method for recognizing the last digit of a telephone number, and allows the user to press the last telephone number of a DTMF type telephone for a specific time or more, thereby detecting a call, without waiting time.

Claims (13)

A standard telephone unit for receiving a telephone number through a key input and outputting a corresponding DTMF signal; And When the DTMF signal is input from the standard telephone unit, the duration of the DTMF signal is measured and converted into digital data when the DTMF signal has a duration less than a specific time, and stored when converted to digital data. Wireless transceiver to output digital data to the base station Interface system of the DTMF standard telephone and wireless transceiver, including. The method of claim 1, wherein the standard telephone unit, A key input unit for receiving a telephone number as a key signal; And A first interface unit which receives a key signal from the key input unit, converts the key signal into a corresponding DTMF signal, and outputs the DTMF signal to the wireless transceiver Interface system of the DTMF standard telephone and wireless transceiver, including. According to claim 1, The wireless transceiver, A second interface unit for transmitting a DTMF signal received from the standard telephone unit; When receiving the DTMF signal from the second interface unit, measuring the duration of the DTMF signal and having a duration of less than a specific time, converting and storing the digital data, and having a duration of more than a specific time, A controller for outputting stored digital data; A dial buffer for storing digital data output from the controller; And Transceiver circuit for outputting data received from the controller to an external base station Interface system of the DTMF standard telephone and wireless transceiver, including. According to claim 1, The wireless transceiver, A second interface unit for transmitting a DTMF signal received from the standard telephone unit; When receiving the DTMF signal from the second interface unit, measuring the duration of the DTMF signal and having a duration of less than a specific time, converting and storing the digital data, and having a duration of more than a specific time, Outputs the stored digital data, and outputs the digital data as it is if the digital data is more than a predetermined digit; if the digital data is less than the predetermined digit, the telephone number stored in the area of the address corresponding to the digital data value A control unit for reading and outputting the read; A dial buffer for storing digital data output from the controller; A memory having a storage area corresponding to a predetermined number of addresses, storing telephone numbers for each of the areas, and outputting telephone number data of an area having a address corresponding to a digital data value from the controller to the controller; And Transceiver circuit for outputting data received from the controller to an external base station Interface system of the DTMF standard telephone and wireless transceiver, including. The method according to any one of claims 1, 3 and 4, The specific time is 2 seconds An interface system of a DTMF standard telephone and a radio transceiver. The method of claim 4, wherein The predetermined number of digits is 3 and the predetermined address is 00 to 99. An interface system of a DTMF standard telephone and a radio transceiver. Inputting a telephone number; Converting the input telephone number into DTMF data, and checking whether the duration of the DTMF data is longer than a predetermined time; When the duration of the DTMF data is greater than or equal to a predetermined time, after the DTMF data is converted into digital data and stored, reading all stored digital data; Digital data is transmitted to the base station as telephone number data; And Steps to Receive Call Service by Phone Number Interface method of the DTMF standard telephone and the wireless transceiver comprising a. The method of claim 7, wherein If the duration of the DTMF data is less than a predetermined time, returning to the step of inputting a key after the DTMF data is converted into digital data and stored. Interface method of the DTMF standard telephone and the wireless transceiver comprising a. Inputting a telephone number; Converting the input telephone number into DTMF data, and checking whether the duration of the DTMF data is longer than a predetermined time; When the duration of the DTMF data is greater than or equal to a predetermined time, after the DTMF data is converted into digital data and stored, reading all stored digital data; Checking whether the number of digits of the entire digital data is more than a predetermined number; If the number of digits of the total digital data is more than a predetermined number, transmitting the digital data as the telephone number data to the base station; And Steps to Receive Call Service by Phone Number Interface method of the DTMF standard telephone and the wireless transceiver comprising a. The method of claim 9, If the duration of the DTMF data is less than a predetermined time, returning to the step of inputting a key after the DTMF data is converted into digital data and stored. Interface method of the DTMF standard telephone and wireless transceiver comprising a. The method of claim 9, If the number of digits of the total digital data is less than the predetermined number, the telephone number data stored in the area having the digital data value as the address is transmitted to the base station. Interface method of the DTMF standard telephone and the wireless transceiver comprising a. The method according to any one of claims 7 to 11, The predetermined time is 2 seconds An interface method of a DTMF standard telephone and a radio transceiver. The method according to claim 9 or 11, The predetermined number is three An interface method of a DTMF standard telephone and a radio transceiver.