KR200158398Y1 - Apparatus for controlling hook switch of telephone - Google Patents

Abstract

The present invention relates to a telephone, and more particularly, to a control device of a telephone hook switch that automatically turns on a hook switch when a user puts down the handset at the end of a call.

The control device of the telephone hook switch of the present invention is a filter for filtering the frequency of the alarm signal sent from the telephone exchange, when the user puts down the handset at the end of a call, and converts the frequency of the alarm signal into a DC voltage. The AM converter and a switch to turn on by the vibration sensor for detecting the vibration in the handset, the handset when the call is turned off by the signal of the AM converter.

Description

Control device of telephone hook switch

The present invention relates to a telephone, and in particular, a telephone hook switch that enables a user to make a call with the outside by automatically hooking a hook switch when a user puts a wrong handset on the end of a call. It relates to a control device of.

In general, at home and at work, the handset cannot be placed properly on the hook switch, so if you make a call from outside even though you are not on a real call, you will not be able to make a call.

Referring to the accompanying drawings of the conventional telephone as follows.

1 is a block diagram schematically showing the state of a conventional telephone and telephone switching center.

As shown in Fig. 1, the telephone 1 and the telephone station exchange apparatus 4 are connected by two tel-lines, and when the external telephone is used, the two tel-lines are connected to make a call with the outside. You can do

In this case, the telephone 1 represents a telephone network 2 that controls the telephone inside the telephone, and is busy when connected to any one of the tel-lines and is in an off-hook state. It is comprised by the hook switch 3 which shows the signal standby.

On the other hand, the conventional telephone is as follows when the user puts down the handset, the handset at the end of the call.

If the handset is not properly placed on the hook switch 3 due to carelessness of the user, the hook switch 3 inside the telephone 1 remains in the off-hook state even though the call is terminated.

At this time, an alarm signal is sent from the telephone station switching device 4 so as to sound an alarm indicating that the handset is incorrectly set in the speaker via the telephone network 2 inside the telephone 1.

However, the above conventional telephones have the following problems.

When the user did not recognize the alarm sound, the hook switch of the phone was kept off-hook so that the call could not be made with the outside because the call was busy when the call was made outside.

The object of the present invention is to provide a control device for a telephone hook switch that is suitable for automatically turning on a hook switch at the end of a call.

1 is a block diagram schematically showing the state of a conventional telephone and telephone switching center

Figure 2 is a block diagram schematically showing the state of the telephone and telephone switching center of the present invention

* Explanation of symbols for main parts of the drawings

20: telephone 21: telephone body

22: telephone network 23: hook switch

24: telephone station exchange device 25: filter

26: AM converter 27: switch

28: transmitter and receiver 29: vibration sensor

30: hook switch control unit

The control device of the telephone hook switch of the present invention for achieving the above object is a filter for filtering the frequency of the alarm signal sent by the telephone station switching device when the user puts down the handset at the end of the call, and the alarm signal of AM switch for converting the frequency into a DC voltage, and the switch is turned on by the vibration sensor for detecting the vibration inside the handset, when the call is turned off or the call by the AM converter.

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to the control device of the telephone hook switch of the present invention.

2 is a block diagram schematically showing the state of the telephone and telephone switching center of the present invention.

As shown in FIG. 2, the telephone 20 and the telephone station exchanger 24 are connected by two tel-lines, and when the call is made from outside, the two tel-lines are connected to make a call with the outside. You can do

Here, the telephone 20 is composed of a telephone body 21 and a handset 28, the telephone body 21 inside the telephone network 22 for controlling the telephone, and any one of the tel-line The hook switch 23 is connected to indicate that a call is in progress when it is connected and is in off-hook state, and is waiting for signal when it is in an on-hook state, and a hook switch control unit 30 that controls the hook switch 23.

The hook switch controller 30 is connected to any one of the tel-lines to which the hook switch 23 is connected, and when the hook switch 23 is in an off-hook state inadvertently by the user at the end of a call, the telephone station exchange A filter 25 for filtering the frequency of the alarm signal sent from the device 24, an AM (Asynchronous Multiplexing) converter 26 for converting the frequency of the filtered alarm signal into a DC voltage, and the handset 28 Installed inside the) detects the movement of the handset 28 and the vibration and temperature changes, such as a sensing unit 30 for detecting that the user uses the handset 28 to make a phone call, and The hook switch 23 is turned off by the signal of the AM converter 26 and the hook switch 23 is turned off, or the hook switch is turned on by the signal of the sensing unit 30. (23) off-hook The hook switch 23 is composed of a switch 27 for connecting or switching the connected tel-line.

At this time, the detection unit 30 is installed inside the handset 28, the vibration sensor for detecting the vibration of the handset 28 or the handset 28 is installed inside the handset (user) handset ( 28) consists of a temperature sensor that detects body temperature when held by hand.

Here, the telephone of the present invention will be described below when the user puts the wrong handset at the end of the call.

If the hook switch 23 of the telephone main body 21 is still in the off-hook even when the call is inadvertently terminated by the user, the frequency of the alarm signal that the telephone station switching device 24 sends an alarm signal to is filtered 25. Filter at and send to AM converter 26.

The AM converter 26 turns off the switch 27 by converting the filtered alarm signal into a DC voltage so that the voltage applied to the switch 27 becomes high.

At this time, the hook switch 23 of the telephone is turned off internally irrespective of the hook switch 23, and when the user picks up the handset 28, the telephone is switched. The sensing unit 29 of the receiver 28 senses a low voltage applied to the switch 27 to turn on the switch 27.

Therefore, the hook switch 23 of the telephone is in the off-hook state, and communication is possible.

On the other hand, if the user normally puts the handset / receiver 28 down after the call and the hook switch 23 of the telephone is in the on-hook state, the telephone station switching device 24 does not send an alarm signal. Since the frequency of the alarm signal is not sensed by the converter 26, the switch 27 is always energized so that the switch 27 is always in an on state.

In this case, a normal call can be made according to the on / off state of the telephone hook switch 23.

As described above, the control device of the telephone hook switch of the present invention has the following effects.

If the user inadvertently puts down the handset at the end of a call, the hook switch can be automatically turned on in-hook to solve the inconvenience of the call.

Claims (3)

A filter for filtering the frequency of the alarm signal sent from the telephone exchange center when the user puts the wrong handset off at the end of the call; An AM converter for converting the frequency of the filtered alarm signal into a DC voltage; A detection unit for detecting a movement of the handset; And a switching unit configured to generate a ring signal by the signal of the AM converter, and to switch the call to be possible by a signal inside the handset when the call is received. . The method of claim 1, The detection unit is installed in the handset control device of the phone hook switch, characterized in that consisting of a vibration sensor for detecting the vibration of the handset. The method of claim 1, The detection unit is installed inside the handset, the control device of the phone hook switch, characterized in that configured as a temperature sensor for detecting the body temperature when the user holds the handset.