JPS63122340A - Hand-free talking device - Google Patents

Abstract

PURPOSE:To attain talking without use of a hand entirely from a stage of line connection to an incoming call by providing a human body sensor detecting the presence of a human being in the talking region and a connection command circuit by a human body driving a line connection section controlling line connection in detecting the call state. CONSTITUTION:A telephone set 10 has a human body sensor 22, which senses the presence of a human being in the talking region. Moreover, the telephone set 10 has a connection command circuit 23 by a human body and the command circuit 23 drives the line control section 14 so as to connect a transmitter 11 and a receiver 12 to a talking line 13 on the condition that the sensor 22 detects the presence of a human body. Thus, the talking is attained without use of any hand from the stage of the connection of the handset to the talking line in response to the call of a communication party.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to hands-free communication devices such as telephones and intercoms.゛ [Prior Art] Telephone devices such as telephones generally use a handset, but hands are occupied during a call, making it impossible to do other tasks.

Therefore, as described in Japanese Patent Publication No. 45-21331, a hands-free telephone has been proposed which allows a user to make a call without holding the handset.

[Problems to be Solved by the Invention] However, in conventional hands-free telephones, when the call status from the other party is confirmed by the ringing tone, the line that connects the handset to the telephone line (telephone line) It is necessary to manually turn on the transmission switch on the control unit.

In other words, with conventional hands-free telephones, there is no need to hold the handset after turning on the dialing switch, so your hands are not occupied, but connecting the handset to the telephone line requires manual operation. Requires. Therefore, in conventional hands-free telephones,
When housewives have one hand wet or full, such as when they are cooking in the kitchen, it is difficult to respond to a ringing telephone.

An object of the present invention is to make it possible to talk without using hands at all from the stage of connecting a handset to a telephone line in response to a call from a communication partner.

[Means for Solving the Problems] The present invention includes a line control unit that connects or disconnects a transmitter and a receiver to a communication line, and a call detection unit that detects a call state from a communication partner. The hands-free telephone communication device has a human body sensor that detects the presence of a human in the conversation area, and the call detection unit detects a calling state, and the human body sensor detects the presence of a human. The device further includes a connection command circuit operated by a human body that drives the line control unit to connect the transmitter and receiver to the telephone line.

[Function] According to the present invention, when the call detection unit detects the call state from the communication partner, when the human body sensor detects the presence of a person in the call area due to a person approaching the call area, the human body sensor detects the presence of a person in the call area. The connection command circuit drives the line control section,
Connect the handset and handset to the telephone line. As a result, one person can talk to a communication partner via a transmitter and a handset connected to one communication line.

That is, from the stage of connecting the handset to the telephone line in response to a call from the other party, it is possible to make a telephone conversation without using one's hands at all.

(Embodiment) Fig. 1 is a circuit diagram showing a hands-free telephone according to an embodiment of the present invention, Fig. 2 is a flowchart showing R call mode, Fig. 3 is a flowchart showing call mode, and Fig. 4 is a telephone FIG.

The hands-free telephone alO is installed, for example, in the living room or kitchen of a residence, and has a microphone (telephone) 11 and a speaker (
(Handset) 12. In addition, the telephone IO connects the microphone 11 and speaker 12 to a telephone line (telephone line) 13.
A line control unit 14 is provided to connect or disconnect the line. The telephone 10 is equipped with a communication circuit 15 between the microphone 11 and the speaker 12 and the line control section 14, and is configured to transmit the transmit signal power and the receive signal power with small loss and good transmission characteristics. .

Further, the telephone a10 has a push button dialing device 16 and a dialing circuit 17 connected to the line control unit 14.

Further, the telephone IO includes a call detection section 18 connected to the telephone line 13. The call detection unit 18 is connected to the call line 1
A calling signal (18Hz) from the communication partner transmitted through 3.
When an incoming call (AC signal) is received, the calling state from the communication partner is detected and the calling buzzer 19 is sounded.

Further, the telephone 10 includes a call end stacking unit 20 connected to the call line 13.The call end detecting unit 20 detects when the communication partner ends the call and turns off the line.
400Hz transmitted from the telephone office (0.5 seconds contact, 0
．． Upon receiving the signal (two-to-two sound with a 5-second pause), it detects that the communication partner has finished the call, and drives the line control unit 14 to cut off the microphone 11 and speaker 12 from the call line 13.

The telephone 10 also includes a call switch 21.
The transmission switch 21 turns on the microphone 11 by 1 manual on operation.
Then, the speaker 12 is connected to the telephone line 13, and the microphone 11 and the speaker 12 are cut off from the telephone line 13 by one manual off operation.

Therefore, the telephone IO is equipped with a human body sensor 22.
The human body sensor 22 is composed of an infrared sensor or an ultrasonic sensor, and detects the presence of a human being in the communication area due to approach or the like.

In addition, the telephone @io is equipped with a connection command circuit 23 based on a human body. The line control unit 14 is driven to connect the transmitter 11 and the receiver 12 to the telephone line 13 on the condition that .

Next, the operation of the embodiment F will be explained.

According to the first embodiment, in the incoming call mode shown in FIG.
8, and when the call buzzer 19 is sounding, the detection result of the human body sensor 22 is transmitted to the human body connection command circuit 23 in step (2), and the connection command circuit 23 detects the presence of a human in the communication area in step (3). 0 When the connection command circuit 23 determines that there is a human in the communication area in step (2), it drives the line control unit 14 and connects the microphone 11 and speaker 12 to the communication line 13 in step (2). This allows humans to step ■
It is possible to talk to one communication partner via a microphone 11 and a speaker 12 connected to a telephone line 13.

Next, when the call end detection section 20 detects that the communication partner has finished the call at step (2), or when the calling switch 21 is manually turned off at step (2), the line control section 20
4 is driven, and the microphone 11 and speaker 1z are cut off from the telephone line 15.

That is, according to the embodiment described above, it is possible to make a call without using any hands from the stage of connecting the microphone 1 and the speaker 12 to the telephone line 13 in response to a call from the other party.

Note 1. In the above embodiment, in the call mode shown in FIG. 3, when the call switch 21 is manually turned on in step 0, the line control section 14 is driven in step @, and the microphone 1 and speaker 12 are connected to the call line. 13. Further, in step O, dial 9M16 is operated.

When a dial call is made to the communication partner in step [phase], a call becomes possible in step [share].Next, in step [phase], the call end detection unit 20 detects the end of the call by the communication partner. , When the transmission switch 21 is manually turned off in step O, the line control section 14 is activated in step O, and the microphone 11 and speaker 12 are cut off from the communication line 13.

The telephone communication device of the present invention also allows checking the condition of infants and bedridden elderly people from outside the home.

Note that the present invention is also applicable to a handsless intercom in which a transmitter and a receiver are connected to or disconnected from a door intercom handset via a telephone line.

[Effects of the Invention] As described above, according to the present invention, it is possible to talk without using any hands from the stage of connecting the handset to the telephone line in response to a call from one communication partner.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing a hands-free telephone according to an embodiment of the present invention, FIG. 2 is a flowchart showing the incoming call mode, and FIG.
The figure is a flowchart showing the calling mode, and FIG. 4 is a schematic diagram showing the external appearance of the telephone. DESCRIPTION OF SYMBOLS 10... Hands-free telephone, 11... Microphone (transmitter), 12... Speaker (receiver), 13... Call line, 14... Line control section, 18... Call detection section , 22... human body sensor, 23... connection command circuit by human body. Patent applicant Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru Figure 2

Claims (1)

[Claims] (1) In a hands-free telephone device, which is equipped with a line control unit that connects or disconnects a transmitter and a receiver to a communication line, and a call detection unit that detects a call status from a communication partner, there is no human in the communication area. The transmitter and the handset are connected to the telephone line on the condition that the call detection unit detects a call state and the human body sensor detects the presence of a person. 1. A hands-free communication device comprising a connection command circuit by a human body that drives the line control unit so as to control the line.