JPS62104346A - Telephone set with hang-up predicting function - Google Patents

Abstract

PURPOSE:To prevent effectively housing in a hangup state from occurring by providing a hangup predicting circuit driving part in a transmitter-receiver. CONSTITUTION:When a telephone set operator finishes a call and puts back the transmitter-receiver to less than certain distance to the telephone set 5, a hangup predicting circuit 7 detects a magnetic field produced by the hangup predicting circuit driving part 4 and sends out a magnetic field detection signal to a talk muting circuit 6. The talk muting circuit 6 receives the magnetic field detection signal and cuts off a speech signal sent from the transmitter- receiver 3 to a telephone network 8. When the transmitter-receiver 1 is put back to the specific storage position of the telephone set 5, a hook switch 9 operates and a receive signal is cut off, so that the talk is finished. Consequently, an impulsive tone due to the collision of the transmitter-receiver against the enclosure of the telephone set body is prevented from being sent to the opposite subscriber and the generation and transmission of a howling tone to the opposite subscriber in the use of a group listening function are stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a telephone with a hang-up prediction function, which disconnects the transmitting signal before the hook switch when the telephone hangs up.

(Prior Art) Conventional telephones have a structure in which, when the handset is put back at the end of a call, a hook switch that is operated only by the weight of the handset disconnects both the transmitting signal and the receiving signal at the same time.

(Problems to be solved by the invention) However, due to the diversification of recent telephone designs,
The structure of the handset/receiver housing of telephones is becoming more complex. The drawback is that when you hang up (return the handset), the handset may hit the phone's casing before the hook switch is activated, causing the other party to hear a shocking sound before the call ends. Group listening function (during a call using the handset, you can hear the other party's voice from the speaker installed in the phone, so that a third party near the phone can also hear the content of the call) (Function) If you are using a FC' function, when you try to put the handset back at the end of a call, the handset and speaker will come close to each other before the hook switch disconnects the call, so the sound from the speaker to the handset's transmitter will be distorted. This had the disadvantage that it caused a large amount of damage to the target, causing howling and sending the howling sound to the other party.

(Means for Solving Problem Z) Ninthly to achieve the above object, the telephone with a hang-up prediction function according to the present invention is provided with a hang-up prediction circuit driving section in the handset and the hang-up prediction circuit in the telephone body. A backup slave circuit that detects the output of the interlocking part and a transmit mute circuit that accepts or disconnects the transmit signal from the transmitter based on the detection output, and when the handset comes close to the telephone main body within a certain distance. The transmitter is configured to disconnect the transmit signal.

The purpose of the present invention is to prevent the person on the other end of the call from accidentally hearing an impact sound when the phone hangs up. An object of the present invention is to provide a telephone with a hang-up prediction function that can prevent hang-ups.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a telephone bottle with a hang-up prediction function according to the present invention.

A handset 1 is equipped with a handset 2, a transmitter 3, and a hang-up prediction circuit drive section 4 that constantly generates a constant magnetic field.

On the other hand, the telephone main body 5 includes a telephone circuit network 8 that controls the telephone call function, a hook switch 9, a line connection terminal 10, and a hang-up prediction circuit 7 that is operated by the field generated from the hang-up prediction circuit driving section 4. The transmitter mute circuit 6 is operated by the output of the hang-up prediction circuit 7 and controls whether or not to read the voice signal from the transmitter 3 to the telephone circuit network 8.

In the above-mentioned telephone, when the telephone operator ends a call and tries to put the handset back on, and the handset l approaches within a certain distance of the telephone main body 5, the hang-up prevention circuit as shown by the dotted line in FIG. Reference numeral 7 detects the magnetic field Z generated by the hang-up prediction circuit driving section 4 and sends a magnetic field detection signal χ to the transmitter mute circuit 6. The transmitter mute circuit 6 receives the magnetic field detection signal Z and cuts off the audio signal sent from the transmitter 3 to the telephone network 8.

The distance at which the hang-up prediction circuit 7 can detect the magnetic field generated by the hang-up prediction circuit driving section 4 is greater than the distance at which the handset may accidentally collide with the telephone body when the handset is brought close to the telephone body. Yes, and if the phone is equipped with a group listening function, this is the distance at which feedback does not occur.

When the handset 1 is returned to the predetermined storage position in the telephone main body 5, the hook switch 9 is operated to cut off the receiving signal and terminate the call.

In the non-embodiment, the hang-up prediction circuit drive unit 4 and the hang-up prediction circuit 7 use a magnetic field control mechanism.
Original or high-frequency sound can also be used as the detection output, and cases based on control of these are also included in the scope of the present invention.

(Effects of the Invention) As described above in detail, the present invention provides a hang-up prediction circuit drive unit, a hang-up prediction circuit, and a hang-up prediction circuit that operate before the handset is stored in a predetermined position of the telephone body and the hook switch is activated to disconnect the call. 7 and the transmitting mute circuit 6 operate to cut off the transmitting signal from the transmitter, so that the transmitter and receiver collide with the casing of the telephone body before the hook switch operates, causing a shock sound to be sent to the other party. Is it possible to prevent howling noise from occurring and sending it to the other party when using the group listening function? It has the effect of being able to prevent it.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone with a hang-up prediction function according to the present invention. DESCRIPTION OF SYMBOLS 1... Handset/receiver 2... Handset 3... Transmitter 4... Hang-up prediction circuit drive unit 5... Telephone main body 6... Transmit mute circuit 7
... Hang-up prediction circuit 8 ... Packing machine circuit network 9 ... Hook switch 10
・・・Line connection terminal agent Patent attorney Jusai Inoro 1 diagram

Claims (1)

[Claims] A hang-up prediction circuit driving section is provided in the handset and a backup prediction circuit is installed in the telephone body to detect the output of the hang-up prediction circuit driving section, and the detection output connects/disconnects the transmission signal from the handset. 1. A telephone with a hang-up prediction function, characterized in that a transmitting mute circuit is provided, and the transmitting signal is cut off when the handset comes within a certain distance from the telephone main body.