JPH05292182A - Hand-free telephone set - Google Patents

Abstract

PURPOSE:To realize more complete hand-free talking of the telephone set by using a voice recognition circuit so as to implement connection/momentary disconnection of a speech cable between a doorphone and the telephone set. CONSTITUTION:A hand-free telephone set 18 is connected to a doorphone 11 by a speech cable and a doorphone talking is made available. Moreover, a control circuit 13 is provided to the telephone set to make connection and momentary interruption of the speech cable between the door phone 11 and the telephone set 18. Furthermore, a preset voice signal and a voice signal inputted from the user of the telephone set are confirmed and an instruction is sent to the control circuit 13 by a recognition circuit 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free telephone for making a hands-free call between a telephone and an intercom.

[0002]

2. Description of the Related Art In recent years, telephones have come to be able to talk more comfortably by their functions such as cordless and hands-free.

A conventional telephone with a hands-free function will be described with reference to FIG. As shown in FIG.
The intercom 1 and the intercom control unit 2 are connected to the hands-free telephone 10 in the broken line by a call cable. The control circuit 3 inside the telephone 10 is connected to the intercom control unit 2, and further connected to the call circuit 4 and the switch detection unit 5.

Next, the operation of this conventional example will be described.
First of all, when the intercom arrives (call from the intercom),
When the user inputs a call cable connection command with the switch 8, the switch detection unit 5 notifies the control circuit 3 of the doorphone call cable connection command. By this connection command, the call path of the intercom 1-the intercom control unit 2-the control circuit 3-the call circuit 4-the speaker 6 or the microphone 7 is formed, and the call state is established.

[0005]

However, in the conventional hands-free call using the above-mentioned telephone, when an incoming call is received from the intercom, it is necessary to touch the switch of the telephone once to operate the hand-free call. If the person cannot reach the phone for some reason, or if he / she is holding something and cannot touch the phone, he / she can talk without holding the handset in his hand. There was a problem that was not fully utilized.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a hands-free telephone capable of fully utilizing the functions of hands-free communication.

[0007]

In order to achieve the above object, the present invention conventionally controls a door-to-phone call based on an input from a switch, but has a configuration using a voice recognition circuit. ing.

[0008]

According to the present invention, the voice recognition circuit is used for the call from the intercom side so that the user on the telephone side can
By inputting one or more specific passwords such as "Yes" by voice, the call state is automatically established.

[0009]

Embodiments of the present invention will be described below with reference to FIG.

As shown in FIG. 1, the intercom 11 and the intercom control unit 12 for detecting the call of the intercom 11 are connected to a hands-free telephone 18 with a call cable, and a call between the intercom and the telephone is possible. It is in a state.

Further, a control circuit 13 for connecting and disconnecting a communication cable is connected to the intercom 11, and is connected to a communication circuit 14 for the purpose of improving transmission characteristics and reducing loss related to transmission and reception.

The voice recognition circuit 15 shown by a broken line in the telephone 18 is connected to the microphone 17 and the control circuit 13. In the voice recognition circuit 15, the pattern comparison unit 19 that compares the voice pattern of the input voice with the voice pattern of the preset voice is the intercom control unit 12 and the microphone 17.
A voice analysis circuit 21 for analyzing / patterning a voice signal input by the user and a password setting unit 2 for setting / saving a voice pattern of a voice of an arbitrary password in advance.
It is connected to 0.

Next, the operation of the above configuration will be described. When a call is made from the intercom 11, the intercom control unit 1
2 detects the incoming call and notifies the control circuit 13 of the incoming call.

Voice is input from the microphone 17 while the control circuit 13 waits for connection of the call cable on the doorphone 11 side and the call cable on the telephone 18 side. Then, first, the frequency analysis of the voice input by the voice analysis circuit 21 is performed, and the voice communication range of the human (about 300 Hz-
3 KHz). After that, the input voice is sent to the pattern comparison unit 19 as a voice pattern by further performing A-D conversion at constant time intervals. At the same time, the voice pattern preset and saved from the password setting unit 20 is sent to the pattern comparison unit 19. The pattern comparison unit 19 compares and collates the input voice pattern with a preset voice pattern, and when a match is confirmed, sends a confirmation signal to the control circuit 13.

The control circuit 13 to which the confirmation signal is input connects the call cable on the intercom side and the call cable on the telephone side to form a call path between the intercom control unit 12 and the call circuit 14. Therefore, hands-free communication between door phones and telephones is possible.

[0016]

As is apparent from the above embodiments, according to the present invention, when performing a doorphone call of a telephone, a hands-free call can be made without touching a switch of the telephone or the like and manually connecting a call cable. can do.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a hands-free telephone which is an embodiment of the present invention.

FIG. 2 is a circuit block diagram of a conventional hands-free telephone.

[Explanation of symbols]

 15 voice recognition circuit 19 pattern comparison unit 20 password setting unit 21 voice analysis circuit

Claims (1)

[Claims] 1. A hands-free telephone having a control circuit for controlling connection and instantaneous disconnection of a call cable between an intercom and a telephone, and an incoming call detection unit for detecting an incoming call from the intercom, wherein the incoming call from the intercom is provided. In the state of being touched, the preset voice pattern and the voice pattern input from the microphone of the telephone are compared and collated to determine these matches,
A hands-free telephone, comprising a voice recognition circuit for connecting a call cable to the control circuit to put the call in a call state when a match is confirmed.