KR19990042725A - Auto dialing method - Google Patents

Abstract

The present invention relates to an automatic dialing method, comprising: waiting for a call; Determining whether a ring signal is detected; Storing Caller ID data of the missed call in the memory 30; Guiding the absence; Ending the call; Determining whether the reception number confirmation key is on; Displaying the received number through a display unit; Determining whether a received number displayed on the display unit is selected; Waiting for a call again if the reception number is not selected; If there is a selected reception number, applying data stored in the memory 30 to the DTMF generator 60; And driving the DTMF generator 60 to transmit a DTMF tone signal to connect a telephone. The present invention can check the telephone number received in the absence to automatically dial by pressing a shortcut key to avoid the trouble of pressing the telephone number one by one.

Description

Auto dialing method

The present invention relates to an automatic dialing method, and to an automatic dialing method of checking a list of telephone numbers received during an absence and selecting a desired telephone number among them, dialing the number with one button.

1 shows a conventional telephone, a hook switch 1 connecting a telephone line, a voice circuit unit 2 for transmitting and receiving a transmission voice signal and a reception voice signal, and a ring circuit unit for generating a ring signal ( 3) and a dial circuit section (5) for generating and transmitting a dial signal, a keypad (5) for pressing the dial, and a receiver (6) for sending and receiving a voice signal through the voice circuit section (2).

Referring to the operation of the conventional telephone configured as described above, when a call signal is received through the line, the ring circuit unit 3 generates a ring signal to inform the receiver that the call has been received through the speaker 7. At this time, when the receiver lifts the handset 6, the hook switch 1 is connected, and the telephone line is connected to the voice circuit unit 2. After the above operation, the voice signal is modulated into an electrical signal through the handset 6 and sent to the voice circuit unit 2, and the electric signal received from the voice circuit unit 2 is modulated into a voice signal by the receiver 6 You can talk to the phone.

On the other hand, if you lift the handset 6 first to make a call, the hook switch 1 is turned on and the telephone line is connected. When the operation is completed and the dial key of the keypad 5 is pressed to generate a signal corresponding to a specific number, the dial circuit unit 4 detects this signal and generates a DTMF tone signal through the telephone line to call the telephone. You can do it.

However, the conventional phone as described above has a cumbersome problem of pressing a phone number when checking a list of incoming phone numbers and selecting a desired phone number among them to connect a phone.

The present invention has been made to solve the above problems, the object of the present invention is

Check the list of phone numbers that are missed, select the phone number you want to call and press the button of the hotkey located on the keypad to automatically dial the number.

The present invention for achieving the above object comprises the steps of: waiting for a call; Determining whether a ring signal is detected; Storing Caller ID data of the missed call in the memory 30; Guiding the absence; Ending the call; Determining whether the reception number confirmation key is on; Displaying the received number through a display unit; Determining whether a received number displayed on the display unit is selected; Waiting for a call again if the reception number is not selected; If there is a selected reception number, applying data stored in the memory 30 to the DTMF generator 60; Driving the DTMF generator 60 to transmit a DTMF tone signal to connect a telephone;

The present invention configured as described above can be dialed automatically by checking the telephone number received in the absence and pressing a shortcut key.

1 is a block diagram of a conventional telephone.

2 is a timing chart of an MDMF method of a Caller ID telephone according to the present invention.

3 is a block diagram of a Caller ID telephone according to the present invention.

4 is a flow chart in accordance with the present invention.

<Explanation of symbols for main parts of the drawings>

1: hook switch 2: audio circuit

3: ring circuit section 4: dial circuit section

5,10: keypad 6,90: handset

20: display unit 30: memory

40: micro 50: bell IC

51: Bell 60: DTMF Generator

70: telephone connection circuit 80: Caller ID IC

100: telephone jack

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The Caller ID Service applied to the present invention transmits data for the caller between the first tone and the second tone, and the data is transmitted even if the caller does not agree to the service. However, the caller may have the option to prevent the transfer of data.

In addition, the service sends not only the phone owner's name but also various data such as the date, time, and phone number that the call came from.

Data is continuously transmitted at a speed of 1200bps using the FSK mode. Logic " 1 " is transmitted at 1200Hz and logic " 0 " is transmitted at a frequency of 2400Hz. The configuration of the data initially consists of a 30-byte pulse signal, a mark signal, and a portion for transmitting data.

FIG. 2 illustrates a multiple data message format (MDMF) method of formatting ID data of a caller in a transmission signal.

As shown in FIG. 2, in the MDMF method, the data signal starts to be transmitted 0.5 seconds after the first beep sound, and the data signal is composed of three parts. First, a 30-byte pulse signal consists of "010101 ..." and is sent for 250ms, followed immediately by a mark portion for 70ms, and then data is transmitted. Subsequently, depending on the call, a part having various temporal lengths is transmitted, in which the caller's name, month, date, hour, minute, and caller's telephone number are recorded.

3 illustrates a Caller ID phone capable of verifying the identity of a caller.

As shown in Fig. 3, the Caller ID telephone includes a keypad 10 for inputting a telephone number, an LCD 20 as an output display device, a memory 30 for storing a designated telephone number, and a system for controlling the system. A microcomputer 40, a bell IC 50 for driving the bell 51, a DTMF generator 60 for generating a DTMF tone signal, a telephone connection circuit 70 for shorting or connecting a telephone line, A caller ID IC 80 for confirming the caller's telephone number, and the receiver 90.

4 illustrates an operation of a telephone for automatically dialing a missed call, which includes waiting for a call, determining whether a ring signal is detected, and calling a missed call when the ring signal is detected. Storing ID data in the memory 30, outputting a voice signal recorded in the memory 30 to guide the absence, ending the call, and confirming the received number after the call is completed in the step; Determining whether the key is on; displaying the received number on the display unit 20 if the received number confirmation key is on; and determining whether the received number displayed on the display unit 20 is selected. And, if the reception number selection is not made in the step, waiting for a call again, and if there is a reception number selected in the step, Applying the data stored in the memory 30 to the DTMF generator 60, and driving the DTMF generator 60 to transmit DTMF tone signals to connect the telephones.

Referring to Figures 3 to 4 will be described in more detail the operation of the automatic dialing method applied to the Caller ID telephone.

When the caller ID data of the missed call is stored in the memory 30, when a shortcut key located on the keypad 10 is pressed to confirm this, the microcomputer 40 connected to the keypad 10 is connected to the memory 30. Receives the data stored in the display unit 20 to display. Selecting a telephone number to call from among the displayed telephone numbers and pressing a shortcut key located on the keypad 10, the microcomputer 40 connected to the keypad 10 receives data stored in the memory 30 and receives DTMF. The generator 60 is driven to generate a DTMF tone signal, and the telephone is automatically connected by transmitting the generated DTMF tone signal.

The present invention as described above by checking the list of telephone numbers received during the absence by selecting a desired telephone number from among them by pressing a shortcut button automatically, it is possible to avoid the hassle of pressing the telephone number one by one.

Claims (1)

In a telephone to which a caller ID service is applied, which carries a telephone number of a sender and various information of a sender owning the telephone number between ring signals and transmits the information to a receiver. Waiting to make a call; Determining whether a ring signal is detected; Storing caller ID data of a missed call in memory (30) when a ring signal is detected in the step; Outputting a voice signal recorded in the memory 30 to guide the absence; Ending the call; Determining whether the receiving number confirmation key is on after the call is completed in the step; Displaying the received number through the display unit 20 when the received number confirmation key is turned on in the step; Determining whether a reception number displayed on the display unit 20 is selected; Waiting for a call again if the reception number is not selected in the step; Applying data stored in the memory (30) to the DTMF generator (60) if there is a reception number selected in the step; And driving a DTMF generator (60) in the step to transmit a DTMF tone signal to connect a telephone.