KR20010111378A - Method and Apparatus for Receiving Message using DTMF Signal - Google Patents

Abstract

The present invention relates to an apparatus and method for receiving a message using a DTMF signal. The present invention includes a memory means for storing a DTMF signal and a program for smoothly performing functions provided in the transmitting and receiving telephones. A control unit for outputting a control signal for designating or releasing an operation; A DTMF signal detection unit selectively connected to the communication connection unit, for detecting and applying to the control unit a DTMF signal input through the switching center; It is connected to the control unit, and includes a relay driver for connecting or disconnecting the communication connection unit and the DTMF signal detection unit by a control signal of the control unit. Therefore, it is possible to clearly identify the numeric message that may occur if misrecognition, as well as to store the received numeric message for later use.

Description

Message receiving apparatus and method using DTF signal {Method and Apparatus for Receiving Message using DTMF Signal}

The present invention relates to an apparatus and method for receiving a message using a dual tone multi frequency (DTMF) signal, and more particularly, to receive a numeric message transmitted by a talker as a DTMF signal while a wired or wireless transmission line is connected. The present invention relates to a message receiving apparatus and method using a DTMF signal that allows a receiver to check a numeric message sent by a caller by storing and displaying the same on a telephone, and to make a call request using the numeric message later.

Fig. 1 is a block diagram showing the configuration of a general telephone apparatus, and telephone calls between handsets are largely enabled by the telephone apparatus consisting of the receiving telephone 10, the switching center 20, and the receiving telephone 30. The receiving telephone 10 and the receiving telephone 30 are input unit 11, 31, control unit 12, 32, handset 13, 33, information display unit 14, 34, communication connection unit 15 in detail. And 35).

The input units 11 and 21 are located on the front panel of the telephone, and are composed of alphanumeric keys for inputting the phone number or alphabetic characters of the other party, and function keys for selecting and setting various functions provided in the telephone. Alphanumeric keys and function keys operate as soft keys that change functions depending on the intended use. In the case of wireless cellular phones, a Hangul key for inputting Korean characters is also provided. The first and second controllers 12 and 32 generate DTMF signals having different frequency bands according to the key signals of the input units 11 and 31, and store a program for smoothly performing all functions provided in the telephone. And memory means for storing information desired by the user. In addition, it outputs various control signals for controlling each component of the telephone apparatus to perform the function of designating or releasing the operation of the component. Here, the DTMF signal is a signal for distinguishing each key signal input from the input units 11 and 31. The DTMF signal is composed of two different frequencies (ie high frequency and low frequency) so that it cannot be simulated by the human voice. The DTMF signal corresponding to each key is as follows.

key One 2 3 4 5 6 7 8 9 0 * # Low frequency (Hz) 697 697 697 770 770 770 852 852 852 941 941 941 High frequency (Hz) 1209 1336 1477 1209 1336 1477 1209 1336 1477 1336 1209 1477

The handset 13 and 33 are connected to the first control unit 12 and the second control unit 32, respectively, and a microphone (not shown) for transmitting the voice data of the talker to the talker and the voice data transmitted from the talker. It consists of a speaker (not shown) that can listen to. In addition, a projection element for detecting a hook on / off state of the phone is located in the seating grooves of the handset 13 and 33 to determine the call state of the phone according to whether the handset is seated. That is, when the handset is separated from the seating groove, the hook-off state is switched to the busy mode, and when the handset is seated in the seating groove, the hook-on state is switched to the call waiting mode. The information display units 14 and 34 are connected to the first control unit 12 and the second control unit 32, respectively, and display various menus for informing the user of the input telephone number, date and time, and function mode. State plays a role. The information display units 13 and 34 in a general telephone use a liquid crystal display (LCD). The communication connection units 15 and 35 are connected to the first control unit 12, the second control unit 32, and the switching center 20, respectively, and the voice data transmitted from the control units 12 and 32, DTMF signals, and hook-on / A function of transmitting an off signal or the like to a switching center through a wired or wireless transmission path.

Switching station 20 is connected to the communication connection unit 15,35 by wire or wireless, and the function and coder for encoding or inverse encoding the analog signal transmitted from the communication connection unit (15,35) to a pulse code modulation (PCM) signal It performs the function of connecting to the place corresponding to the telephone number pressed and to supply the ring signal and various tone signals necessary for the telephone call. In addition, if the telephone number dialed by the talker is out of his area, he / she plays a relay role to help the other exchange.

When a call is formed by a general telephone apparatus having the above-described configuration, when a message including a number (for example, a phone number, social security number, bank account number, etc.) is transmitted between handset parties, a numeric message is called out one by one. Generally, the other person remembers or writes in a memo or records all the contents of the call. In addition, when a call is made by the wireless cellular phone apparatus, a method of storing a message transmitted by the other party in a busy state may be used.

However, the method of transmitting a numeric message using such a general telephone apparatus is that the voice of the message forwarder is incorrectly transmitted when the call state is not good and the recorded content is recorded when the call state is bad even when the wrong message is received or the entire contents of the call are recorded. There is a problem in that the user cannot repeatedly listen to the recorded content. In addition, if there is no note when the call is made by the wireless cellular phone device, the message of the other party can be stored in the busy state, but this method also requires that the message recipient manually selects the save mode and manually stores the message as the other party calls. There is a problem.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to send a numeric message, such as a telephone number or social security number to the other party in the busy state between the talker and the receiver. The present invention provides a message receiving apparatus and method using a DTMF signal that transmits a corresponding numeric message as a DTMF signal and displays the corresponding numeric message on a counterpart's telephone.

It is another object of the present invention to store a DTMF signal corresponding to a numeric message transmitted by one party to the other party in a busy state between the talker and the called party on the other party's phone, and then use the stored numeric message to make a call later. The present invention provides an apparatus and method for receiving a message using a DTMF signal.

1 is a block diagram showing the configuration of a general telephone apparatus;

2 is a block diagram showing the configuration of a message receiving apparatus according to the present invention;

3 is a flowchart illustrating the operation of the message receiving apparatus according to the present invention.

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

40, 72: calling party telephone 41, 61: input unit

42: third control unit 43,63: handset unit

44,64: information display section 45,65: communication connection section

46,66: relay driver 47,67: DTMF signal detector

60: switching center 62: fourth control unit

In order to achieve the above object, the present invention provides an input unit for selecting and releasing various functions and generating DTMF signals corresponding to respective numeric keys, a handset unit for transmitting and receiving voice data between handsets, and an input unit key. Telephone calls of the talker and the receiver, including a sender's and a receiver's phone including a communication link for transmitting signals and various signals necessary for a telephone call to the outside; A communication system capable of storing a program comprising: a memory means for storing a program for smoothly performing functions provided in a transmitting telephone and a receiving telephone, and storing a DTMF signal; A control unit for outputting; A DTMF signal detection unit selectively connected to the communication connection unit, for detecting and applying to the control unit a DTMF signal input through the switching center; It is connected to the control unit, characterized in that it comprises a relay driver for connecting or disconnecting the communication connection unit and the DTMF signal detection unit by a control signal of the control unit.

A communication method for enabling a telephone conversation between a sender and a receiver, including an exchange station for interfacing various signals between a transmitting telephone and a receiving telephone and a transmitting telephone and a receiving telephone, the method comprising: receiving a message in a busy state; Setting a message receiving mode to specify that the message to be sent; Determining an input of the message reception mode to maintain a busy state when the message reception mode is not input, and maintaining a message reception state when the message reception mode is input; Storing the digits input from the message sender in the memory means and displaying the digits; Canceling the message reception possible state according to the release of the message reception mode.

Hereinafter, a preferred embodiment of an apparatus and method for receiving a message using a DTMF signal according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing the configuration of the message receiving apparatus according to the present invention, the same parts as the configuration of Figure 1 is not described in detail in order to avoid unnecessarily obscure the specification, added configuration and added functionality Explain mainly. Here, it is assumed that the sending telephone 40 is the telephone of the message sender who wants to transmit the numeric message, and the receiving telephone 60 is the telephone of the message receiver who wants to receive the numeric message. The sending telephone 40 and the receiving telephone 60 may be a message sender or a message receiver depending on whether a message is received.

Each input unit 41 or 61 of the transmitting telephone 40 and the receiving telephone 60 is further configured with a message receiving mode setting key for specifying reception of a numeric message. When the user presses a message reception mode setting key to receive a message in a busy state, a corresponding key signal is input to the controllers 42 and 62, and the controllers 42 and 62 recognize that the message reception mode is designated.

The relay drivers 46 and 66 are connected to the controllers 42 and 62 and the communication connection units 45 and 65, and serve to switch the relay terminals by the relay driving signals of the controllers 42 and 62. For example, when a relay driving signal is input from the control unit 62 on the message receiving side, the relay driving unit 66 is operated, and the relay terminal is connected to the communication connecting unit 65 and the DTMF signal detecting unit 67 to communicate with the communication connecting unit ( 65) to detect the DTMF signal. Here, the DTMF signal input to the communication connection unit 65 is a signal transmitted on the call path via the switching center 50.

The DTMF signal detectors 47 and 67 are connected to the relay drivers 46 and 66 and the controllers 42 and 62. The DTMF signal detectors 47 and 67 receive DTMF signals from the communication connection units 45 and 65 through the switching center 50 and receive messages. The numeric key input from the sender is identified to transmit a signal corresponding to the numeric key input to the controllers 42 and 62 (or the controllers 42 and 62 identify the signal state of the DTMF signal detector and analyze the corresponding number). ). At this time, the message receiving side control section 42 or 62 is configured to store the signal applied from the DTMF signal detecting section 47 or 67 in the built-in memory (not shown) and display the signal on the information display section 44 or 64. It is.

An operational state of the apparatus and method for receiving a message using a DTMF signal according to the present invention as described above will be described with reference to the accompanying drawings.

3 is a flowchart illustrating an operation of a message receiving apparatus according to the present invention, and assumes that a message sender and a message receiver are in a busy state.

First, the fourth controller 62 determines whether a key signal corresponding to the message reception mode setting key is input from the message receiver in the busy state between the handset (402). Here, the person who wants to receive the numeric message can enter the message receiving mode setting key attached to his phone. As a result of determination, if it is determined that the message reception mode setting key is not input from the message receiver, the mobile station maintains a busy state (404). If it is determined that the message reception mode setting key is input, the fourth control unit 62 receives a relay control signal. Outputting the relay drive unit to connect the communication connection unit 65 and the DTMF signal detection unit 67 (408). Thereafter, the fourth controller 62 determines whether a digit is input from the message sender (410). The digits input by the message sender are converted into DTMF signals of different frequencies and applied to the DTMF signal detector 67 of the receiving telephone 60 through the communication connection unit 65 via the switching center. As a result of the determination in step 410, if it is determined that the digit is input from the message sender, the fourth control unit 62 stores the DTMF signal applied from the DTMF signal detection unit 67 in the memory and stores the digit in the memory of the receiving side telephone 60 The display 412 on the information display unit 64 allows the message receiver to check the numeric message input from the message sender. In addition, since the transmitted digit is stored in the memory, it can be confirmed later, and when the digit input from the message sender is a phone number, the telephone call can be requested by one touch with the stored digit. The method of requesting a telephone call with a stored digit is obvious to those skilled in the art and thus will not be described in detail herein.

As a result of the determination of step 410, it is determined that no digit is input or after the step 412, the fourth controller 62 determines whether the message receiver has released the message reception mode (414). Here, the method of determining the release of the message reception mode may identify whether the release of the message reception mode is determined by determining whether a key signal corresponding to the release button of the input unit 61 is input to the fourth controller 62. As a result of the determination of step 414, if it is determined that the message reception mode is not released, the process returns to step 410 and repeats the subsequent steps, and if it is determined that the message reception mode is released, the fourth controller 62 relays. A control signal is output to block the relay driver to insulate the communication connection unit 65 from the DTMF signal detection unit 67 (416).

After step 404 and step 416, the fourth controller 62 receives the hook on / off detection signal to determine whether the telephone call is terminated between handsets (418). If it is determined that the call has not ended yet, the process returns to step 402 and repeats subsequent steps.

The above description is only for explaining one embodiment, and the present invention is not limited to the above-described embodiment and can be variously changed within the scope of the appended claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, according to the apparatus and method for receiving a message using a DTMF signal according to the present invention, a numeric message may be transmitted as a DTMF signal even during a call, and the receiving side may read the transmitted DTMF signal and display the numeric message. By doing so, it is possible not only to clearly identify the numeric message that may occur when misrecognition, but also to store the received numeric message for later use.

Claims (5)

Input unit for selecting and canceling various functions and generating DTMF signal corresponding to each numeric key, Handset unit for transmitting and receiving voice data between handsets, Key signal for the input unit and various signals necessary for telephone call A communication system for making a telephone call between a sender and a receiver, including a transmitting telephone and a receiving telephone including a communication connection unit for transmitting to outside, and an exchange station for interfacing various signals between the transmitting telephone and the receiving telephone. , A control unit for storing a program for smoothly performing functions provided in the transmitting telephone and the receiving telephone, and a memory unit for storing the DTMF signal, and outputting a control signal for designating or releasing an operation; A DTMF signal detection unit selectively connected to the communication connection unit, for detecting and applying the DTMF signal input through the switching center to the control unit; And a relay driver connected to the control unit and configured to connect or disconnect the communication connection unit and the DTMF signal detection unit according to a control signal of the control unit. The method of claim 1, wherein the input unit And a message receiving mode setting key for designating to receive a message in a busy state. The apparatus of claim 1, further comprising an information display unit for outputting the DTMF signal input by the message sender. The apparatus of claim 1, wherein the DTMF signal detector and the relay driver are replaced by a digital signal processing (DSP) technique. A communication method for enabling a telephone conversation between a sender and a called party, including an exchange station for interfacing a transmitting telephone and a receiving telephone and various signals between the transmitting telephone and the receiving telephone. Setting a message receiving mode for designating to receive a message in a busy state; Determining an input of a message reception mode to maintain a busy state if the message reception mode is not input, and maintaining a message reception state if the message reception mode is input; Storing the digits input from the message sender in the memory means and displaying the digits; Canceling the message reception possible state according to the release of the message reception mode.