KR0154459B1 - Apparatus and method for mutual calling using branched telephone set - Google Patents

Abstract

The present invention relates to a mutual calling device and method for a parallel-connected telephone composed of a first telephone and a second telephone connected in parallel to the first telephone. The second telephone includes a loop on / loop off state of the first telephone. A second telephone loop detector 20 for detecting and outputting a loop on / loop off signal accordingly; DTMF receiver 30 for detecting the DTMF signal generated from the first telephone; A ring tone generator 50 incorporating data for a special ring tone representing a call; A speaker 60 connected to the ring tone generator 50; A hook detector (70) for detecting a hook on / off state of the second telephone and generating a signal corresponding thereto; A telephone loop control unit (80) for turning on / off a loop of the second telephone; And recognizing a loop on / off state of the first telephone through the other telephone loop detector 20, analyzing a DTMF signal of the first telephone 10 input through the DTMF receiving unit 30, When the DTMF signal input from the telephone 10 is a call signal, the call sound generator 50 is controlled so that the call sound data is repeatedly output to the speaker 60 for a predetermined number of times. If the signal input from the detection unit 70 is the hook-off signal of the second telephone, the controller 40 is configured to control the telephone loop control unit 80 so that the second telephone is in a loop on state, and A second step of searching for a loop on / off state of the first telephone, and searching whether a DTMF signal is input from the first telephone; A second step of repeatedly generating the ring tone by a predetermined number of times when the first telephone is looped on and the DTMF signal input from the first telephone is a call signal; A third step in which the second telephone is switched to a loop-on state and the generation of the ringing tone is stopped when the second telephone is in a hook-off state while the call tone is repeatedly generated for a predetermined number of times; And a fourth step of stopping the generation of the ringing tone when the second telephone is kept in the on state even though the second telephone is repeatedly output for a predetermined number of times.

Description

Interlinking device of parallel connected telephone and its method

1 is a block diagram of a mutual calling device of a parallel-connected telephone according to the present invention;

2 is a flowchart of a mutual calling method of a parallel-connected telephone according to the present invention.

* Explanation of symbols for main parts of the drawings

10: first telephone 20: other telephone loop detection unit

30: DTMF receiving unit 40: control unit

50: internal sound generator 60: speaker

70 hook detection unit 80: telephone loop control unit

100: second telephone

The present invention relates to a cross-calling device and a method of a parallel-connected telephone, and more particularly, to a cross-calling apparatus of a parallel-connected telephone, which allows a user to attempt a call connection to another telephone connected in parallel to the same trunk line while using the telephone. It is about a method.

In general, a parallel connected telephone refers to a telephone in which two or more telephones share a single trunk line, and such parallel telephones are increasingly used in households or offices with many family members.

However, in the parallel-connected telephone, when a user calls another user who uses another parallel-connected telephone while using the telephone, there is a problem in that the user has to take the hassle of delivering it verbally to the other user.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and provides a mutual calling device for a parallel-connected telephone that allows a user to call another user using another parallel-connected telephone in the trunk line while using the parallel-connected telephone. There is a purpose.

In addition, another object of the present invention is to provide a mutual calling method of a parallel-connected telephone that allows a user to call another user using another telephone connected in the same trunk while using the parallel-connected telephone.

In order to achieve the above object, the present invention provides a cross-calling device of a parallel-connected telephone composed of a first telephone and a second telephone connected in parallel to the first telephone. The second telephone includes a loop-on of the first electric charge. A second telephone loop detector for detecting a loop off state and correspondingly outputting a loop on / loop off signal; A DTMF receiver for detecting a DTMF signal generated from the first telephone; A ring tone generator incorporating data for a special ring tone representing a call; A speaker connected to the ring tone generator; A hook detector configured to detect a hook on / off state of the second telephone and generate a signal corresponding thereto; A telephone loop control unit for turning on / off a loop of the second telephone; And recognizing a loop on / off state of the first telephone through the other telephone loop detection unit, analyzing a DTMF signal of the first telephone input through the DTMF receiving unit, and the DTMF signal input from the first telephone is a call signal. In this case, the call sound generating unit is controlled so that the call sound data is repeatedly output to the speaker for a predetermined number of times, and if the signal input from the hook detection unit within the predetermined number of times is the hook-off signal of the second telephone, the telephone loop control unit. It characterized in that it comprises a control unit for controlling the second phone to be in a loop on state.

In addition, the present invention provides a mutual calling method of a parallel connected telephone comprising a first telephone and a second telephone connected in parallel to the first telephone, wherein the second telephone retrieves a loop on / off state of the first telephone, A first step of searching whether a DTMF signal is input from the first telephone; A second step of repeatedly generating the ring tone by a predetermined number of times when the first telephone is in a loop-on state and the DTMF signal input from the first telephone is a call signal as a result of the search in the first stage; A third step in which the second telephone is switched to the loop on state while the second telephone is in the hook-off state while the ring tone is repeatedly generated for a predetermined number of times, and the generation of the ring tone is stopped; Although the call tone is repeatedly output for a predetermined number of times, the second telephone may include a fourth step of stopping the generation of the call tone when the second telephone maintains the hawk on state.

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

1 shows a block diagram of a mutual calling device of a parallel-connected telephone according to the present invention. In Fig. 1, the mutual calling device of the parallel-connected telephone is composed of a first telephone 10 and a second telephone 100 connected in parallel to the first telephone 10. In addition, as shown in FIG. 1, the second telephone apparatus 100 includes an alternate telephone loop detector 20 and a D.T.F. receiver (hereinafter referred to as DTMF). , A control unit 40, a ring tone generating unit 50, a speaker 60, a hook detection unit 70, and a telephone loop control unit 80.

Here, the other telephone loop detector 20 detects whether the loop of the first telephone 10 is 'on' or 'off', and controls the corresponding 'on / off' signal to the controller 40. To provide.

In addition, the DTMF receiver 30 detects the DTMF signal from the first telephone 10 and provides the detection signal to the controller 40.

The ring tone generator 50 has built-in data for a special ring tone indicating a call, and when a control signal is applied from the control unit 40, the ring tone generator 50 outputs the embedded ring tone data to the speaker 60.

The speaker 60 receives data about a special call sound indicating the call of the call sound generator 50 and generates the sound externally so that the user can recognize it.

The hook detector 70 detects a hook on / off state of the second telephone 100 and outputs the same to the controller 40.

When the hook detection unit 70 applies the hook-off signal to the control unit 40, the telephone loop control unit 80 'turns on' the loop of the second telephone 100 under the control of the control unit 40.

The controller 40 recognizes the loop on / off state of the first telephone 10 through the other telephone loop detection unit 20 and analyzes the DTMF signal of the first telephone 10 input through the DTMF receiver 30. When the signal input from the first phone 10 is a call signal, the call sound generator 50 is controlled to output the call sound, and then the signal input from the hook detector 70 is input to the second phone 100. If the hook-off signal, the telephone loop control unit 80 is controlled so that the second telephone 100 is in the loop on state.

2 is a flowchart showing step-by-step method of mutual calling of a parallel-connected telephone of the present invention. Therefore, hereinafter, the operation of the mutual calling device and the mutual calling method of the parallel-connected telephone will be described in detail with reference to FIGS. 1 and 2.

First, the other telephone loop detection unit 20 of the second telephone 100 retrieves the loop state of the first telephone 10 (step 200), and provides the result to the controller 40.

As a result of the search in step 200, when the loop of the first telephone 10 is turned on, the controller 40 operates the DTMF receiver 30 to detect the DTMF signal generated by the first telephone 10 (step 202).

On the other hand, in order for the user of the first telephone 10 to call the second telephone 100, a special button mounted on the first telephone 10, for example, a # or * button (not shown). When pressed, the first telephone 10 generates a DTMF signal corresponding to the # or * button and provides the DTMF receiver 30 of the second telephone 100.

When the DTMF receiver 30 of the second telephone 100 receives a DTMF signal from the first telephone 10, the DTMF receiver 30 receives the DTMF signal and provides the same to the controller 40.

If the DTMF signal input from the DTMF receiver 30 is a signal corresponding to the # or * button, the controller 40 recognizes that the call signal has been transmitted from the first telephone 10 (step 204). The control unit 50 controls the speaker 60 to repeatedly output data about the ringing tone.

Therefore, the ringing tone is output through the speaker 60 (step 206), and the user of the second telephone 100 hears the ringing tone through the speaker 60, and accordingly, the handset mounted on the second telephone 100 (Not shown in the figure), the hook detection unit 70 detects such a state, that is, the hook-off state (step 208), and provides the result to the controller 40.

If the control unit 40 recognizes that the second telephone 100 is in the hook-off state by step 208, the control unit 40 controls the telephone loop control unit 80 so that the loop of the second telephone 100 is turned on and then the ring tone generator 50 ) To stop the output of the ring tone (step 210).

On the other hand, in step 206, if the ring tone is output through the speaker 60, the controller 40 counts the number of times the ring tone is output if the signal input from the hook detector 70 is a signal indicating a hook-on state ( Step 212).

If the second telephone 100 remains in the hook-on state despite the output of the preset number of times, as the counting result of step 212, the control unit 40 controls the ring tone generation unit 50 to stop the output of the ring tone. (Step 214).

As described above, the present invention has a more convenient effect by allowing a user to call another parallel connected telephone while using the telephone in the parallel connected telephone.

Claims (2)

A mutual calling device of a parallel connected telephone comprising a first telephone and a second telephone connected in parallel to the first telephone, wherein the second telephone detects a loop on / loop off state of the first telephone and corresponds thereto. Another telephone loop detector 20 for outputting a loop on / loop off signal; DTMF receiver 30 for detecting the DTMF signal generated from the first telephone; A ring tone generator 50 incorporating data for a special ring tone representing a call; A speaker 60 connected to the ring tone generator 50; A hook detector (70) for detecting a hook on / off state of the second telephone and generating a signal corresponding thereto; A telephone loop controller (80) for turning on / off a loop of the second telephone; And recognizing a loop on / off state of the first telephone through the other telephone loop detection unit 20, analyzing a DTMF signal of the first telephone 10 input through the DTMF receiving unit 30, When the DTMF signal input from the telephone 10 is a call signal, the call sound generator 50 is controlled so that the call sound data is repeatedly output to the speaker 60 for a predetermined number of times. If the signal input from the detection unit 70 is a hook-off signal of the second telephone, the parallel connection configured with a control unit 40 for controlling the telephone loop control unit 80 so that the second telephone is in a loop on state. Mutual pager of the telephone. A mutually calling method of a parallel connected telephone comprising a first telephone and a second telephone connected in parallel to the first telephone, wherein the second telephone retrieves a loop on / off state of the first telephone, and the first telephone is connected. A first step of retrieving whether a DTMF signal is input from the mobile terminal; A second step of repeatedly generating the ring tone by a predetermined number of times when the first telephone is in a loop-on state and the DTMF signal input from the first telephone is a call signal; A third step in which the second telephone is switched to the loop on state while the second telephone is in the hook-off state while the ring tone is repeatedly generated for a predetermined number of times, and the generation of the ring tone is stopped; And a fourth step of stopping the generation of the ringing tone when the second telephone is kept in the on state even though the call tone is repeatedly output for a preset number of times.