JPS61245787A - Automatic answering doorphone set - Google Patents

Abstract

PURPOSE:To inform a caller of a doorphone such as a visitor of the presence of a called party even when a called telephone set is busy with an external line by providing an automatic information sending function to the doorphone. CONSTITUTION:When an incoming detection signal is applied to a control section 6, the section 6 discriminates a signal from a talking detection section 5 and when it is confirmed that a key telephone set 3 is not busy, a talking switch section 9 is controlled to short-circuit points C and B, and a call tone sending section 7 is controlled to send a call tone to both the doorphone 1 and the telephone set 3. In case of an incoming call to the doorphone, when the telephone set 3 is busy, the control section 6 controls a talking switch section 9 to short-circuit points A and C, and then the section 7 is controlled to send a call tone to the telephone set 3. Further, a message sending section 8 is controlled to send a message to a doorphone 11 in order to inform it to a doorphone caller that the telephone set 3 is busy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a door intercom device connected to a key telephone device.

[Conventional technology]

Conventionally, in this type of doorbell device, a button telephone and a doorphone capable of talking are connected, and when a call is received from the doorphone to the doorphone, the same ring tone is emitted to the button telephone and the doorphone, and the call is made from the doorphone to the button telephone. He was letting me know something.

[Problem that the invention seeks to solve]

In the door phone device described above, if a call is made from the door phone while the called party's key phone is in the middle of a call, the key phone can confirm that the call has been made by the ring tone, etc., but the door phone does not hear the ring tone. The disadvantage is that it is not possible to confirm whether there is a person inside the room where the key telephone is located, since only the sound can be heard.

[Means for solving problems]

According to the present invention, by transmitting and receiving call information and control information to and from the main switch of the key telephone device via at least one information path, a call is made with the key telephone connected to the main switch. In the doorbell device, means for detecting whether or not the called party's button telephone is in communication with another person when the doorphone makes a call, and based on the result,
An automatic answering door intercom device having means for displaying a status on the door intercom is obtained.

A circuit for detecting whether or not the filling machine is on a call, and these two
The present invention has a control circuit that controls the side door intercom device using signals from two circuits, a discharge sound sending section, and a message sending circuit that sends a door phone message.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

The drawing is a block diagram of one embodiment of the present invention.

The doorbell unit 4 according to the present invention includes a call detection section 5
．． Control unit 6. Ringing tone sending unit 7. The message sending section 82 consists of a call switch section 9 and an incoming call detecting section 10, and is connected to the door phone 11 and, via the call path switch section 2, to a key telephone. A doorbell 11 is installed for a visitor or the like to call a called party on the telephone 3 from outside.

The telephone set 3 is connected to the central office line 1 via the call path switch section 2, and its call status is constantly monitored by the call detection section 5 and transmitted to the control section 6. The incoming call detection unit 10 detects an incoming call signal from the door phone 11 and transmits the incoming call detection signal to the control unit 6. The control unit 6 judges the signal from the call detection unit 5 when the incoming call detection signal is applied, and when it confirms that the key telephone 3 is not in a call, controls the call switch unit 9 to switch the communication between C and B. At the same time, the ring tone sending unit 7 is controlled to send a ring tone to both the door phone 11 and the telephone 3. Furthermore, if the telephone 3 is busy when a doorbell call is received, the control section 6 controls the call switch section 9 to short-circuit A-0, and then controls the ring tone sending section 7 to start it. and sends a ring tone to the 11C handset 3. It also controls the message sending section 8 and sends a message (such as "Please wait for a while...") to the door phone J1 in order to notify the person calling the door phone that the telephone 3 is busy.

In FIG. 1, the message sending unit 8 sends a message by synthesizing cyanide, but it may also send a display signal that causes the door phone 11 to display a message on a liquid crystal display or the like.

〔Effect of the invention〕

As explained above, the present invention provides the doorbell with an automatic information sending function, so that even if the called telephone is busy with an outside line, the doorbell caller, for example, a visitor, can be informed of the presence of the called person. It allows you to let people know where your room is, and has the effect of not making your loved ones feel uncomfortable.

[Brief explanation of drawings]

The drawing is a functional block diagram of an embodiment of the present invention. 1... Office line, 2... Call path switch section, 3... Telephone, 4... Door phone unit, 5... Call detection. 6... Control unit, 7... Call sending unit, 8... Old message sending unit, 9... Call switch unit, 10...
...Incoming call detection unit, 11...Doorphone.

Claims (1)

[Claims] A door intercom device that performs a call with a button telephone connected to a main switch by transmitting and receiving call information and control information to and from a main switch of the key telephone device via at least one information path. A door intercom device comprising: means for detecting whether or not a called party's key telephone is in communication with another person when a caller makes a call; and means for displaying a status on the door intercom based on the result.