JPH04343557A - Interphone system for multiple dwelling house - Google Patents

Abstract

PURPOSE:To obtain a system capable of extending the set time of talking between a common entrance machine and each resident machine in the telephone talking CONSTITUTION:In the case of extending a talking time previously set up by a timer on the resident machine (2a) side during the period of interphone talking between the common entrance machine 1 and the resident machine 2a, a talking time elapsed some from the set time is returned to the original state (zero) by turning on a talking continuing switch 26 included in the resident machine 2a, extending the talking time. Thereby the system can correspond also to long talking by operating the switch 26.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom system for an apartment complex used in an apartment building such as a condominium, and particularly to intercom communication control thereof.

0002

2. Description of the Related Art FIG. 3 is a system configuration diagram of a conventional intercom system for apartment complexes. In the figure, 1 is a collective entrance machine installed at the collective entrance, and 2 is an intercom (residential unit machine) provided for each dwelling unit. The collective entrance device 1 has a built-in switch group 12a to 12n for specifically calling the intercom 2 of each dwelling unit, a speaker 10 and a microphone 11 for communicating with the called intercom.

On the other hand, each intercom 2 has a CPU 21 that controls communication with the collective entrance machine 1, a switch 23 that is linked to the hook-off of the handset 22, and is excited when the switch 23 is turned on to connect a line connecting the handset 22 and the collective entrance machine. A relay 24 that closes the contact 25 is provided.

Next, the operation of the conventional system according to the above configuration will be explained with reference to the flowchart shown in FIG. Each operation shown in the flowchart is performed under the processing of the CPU 21. First, the residential unit call switch 12a of the collective entrance machine 1
~12n, for example, when the residential unit (intercom) a call switch 12a is pressed, the CPU 21 of the residential unit a
detects this and receives a call (S-1).

When this detection state is notified to the resident by some means, the resident lifts the handset 22 and turns the handset off (S-2).On the other hand, when the switch 23 is turned on in conjunction with the handset 22 being turned off, the CPU 21 connects the line. By energizing the relay 23 and closing its contact 24, the microphone 11 and speaker 10 of the collective entrance unit 1 are connected to the handset 22 of the dwelling unit a, forming a communication path (S-3).

[0006] When the resident turns on the handset 22 after the call ends (S-5), the contact 23 turns off, and the line connection relay 24, which the CPU 21 detects when the off state is detected, also demagnetizes, and when the contact 25 opens, the The connected line is disconnected and returns to the initial state (S-6).

[0007]

[Problems to be Solved by the Invention] As described above, in the conventional intercom system for apartment complexes, since the CPU 21 detects that the handset 22 is turned on and releases the line occupancy between the dwelling unit unit 2 and the collective entrance unit 1, it is difficult to make a call. After the end of the call, the line where the resident forgets to pick up the handset or disconnects the handset (handset off) continues to be occupied, making it impossible to make any calls to other units. Therefore, in order to solve the conventional problems as mentioned above, Japanese Patent Laid-Open No. 59-11495
No. 8, Japanese Patent Application Laid-open No. 62-51355, there was a system that set a time limit on call duration, cut off calls after a certain period of time, and opened the line to other residences.

[0008] However, in these systems, the line is cut off after a certain period of time without any prior notice, so if you are unable to communicate your requirements, you have to wait until the line is free or restart the call. There was a problem in that the caller needed to be called again from the collective entrance machine, and it took time and effort to resume the call.

[0009] This invention was made to solve the above-mentioned problems, and provides an intercom system for apartment complexes that allows calls to be made without unilaterally cutting off the line and with plenty of time. The purpose is to obtain.

0010

[Means for Solving the Problems] The intercom system for apartment complexes according to the first invention includes a residential unit intercom,
a receiving circuit that receives a call from the collective entrance machine; a line connection circuit that detects handset off of the intercom after receiving the call and connects the line between the intercom and the collective entrance machine; and a line connection circuit that enables the line connection to the line connection circuit. This system is equipped with a timer for measuring time and a connection time extension means for extending the valid line connection time.

[0011] Furthermore, the intercom system for apartment complexes according to the second invention is provided with a notification means for cutting off the line by sounding a notification sound when the line connection valid time set by the timer has elapsed. It is something.

0012

[Operation] The connection time extension means according to the first aspect of the invention extends the line connection time set by the timer, thereby making it possible to make a call with some time margin.

[0013] Furthermore, according to the notification means according to the second invention, when the line cutoff time set by the timer is reached, a notification sound is emitted to the caller and the line is cut off, so that the call is abruptly terminated. There is no.

[0014]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram of an intercom system for an apartment complex in this embodiment. In the figure, the same reference numerals as in FIG. 3 indicate the same or corresponding parts, and detailed description thereof will be omitted. In the figure, 2a to 2n are housing units a to 2n in this embodiment.
It is n. In addition to the configuration of the dwelling unit 2 of the conventional system, each dwelling unit 2a to 2n has a CPU 21a that also has a timer function,
It is equipped with a call continuation switch 26 and a notification sound generation circuit 27 that generates a notification sound to notify the termination of the call time.

Next, the operation of this embodiment according to the above configuration will be explained with reference to the flowchart of FIG. First, like the conventional system, the residential unit call switch 12a of the collective entrance unit 1 is activated.
~12n, for example, when the residential unit (intercom) a call switch 12a is pressed, the CPU 21 of the residential unit a
A detects this and receives the call (S-1).

When this detection state is notified to the resident by some means, the resident lifts the handset 22 and turns the handset off (S-2).On the other hand, when the switch 23 is turned on in conjunction with the handset 22 being turned off, the CPU 21a
By exciting the line connection relay 23 and closing its contact 24, the microphone 11 and speaker 10 of the collective entrance unit 1 and the handset 22 of the dwelling unit a are connected, forming a communication path (S-3 ).

After the communication path is established, the CPU 21a starts, for example, a 3-minute timer (S-4). And after that,
Determine whether the handset is on before timeout (S-
5) If the handset is on, it is assumed that the call has ended and the line between dwelling unit a and collective entrance unit 1 is cut off (S-9).
. Alternatively, if it is determined that the handset is not on, it is determined whether the time set by the timer has timed out, and if it has timed out, the CPU 21a drives the notification sound generation circuit 7 to emit an electronic sound such as "pippipipip". It is superimposed on the communication path three times (S-8) and the line is cut off (S-8).
-9).

Furthermore, if the resident turns on the call continuation switch 26 (S-7) before the timeout (S-6), the CPU
21a detects the on state, goes to step (S-4) again, restarts the 3-minute timer, and extends the call time (S-5). Example 2. The notification sound generation circuit may emit a notification sound immediately before the timeout, and disconnect the line after a certain period of time (for example, 10 seconds) has elapsed after the end of the sound.

[0019]

[Effects of the Invention] As described above, according to the first invention, by having the connection time extension means, it is possible to extend the line connection effective time by setting a timer and make a call, so there is a certain amount of margin. This has the effect of allowing you to make calls while holding the phone. Further, according to the second invention, the notification means notifies the caller of the expiration of the line connection with a notification sound, thereby preventing the line from being cut off without any prior notice. It has the effect of providing an easy-to-use system that can mediate the promise of continuation.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an intercom system for an apartment complex according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of this embodiment.

FIG. 3 is a system configuration diagram of a conventional apartment complex intercom system.

FIG. 4 is a flowchart illustrating the operation of a conventional system.

[Explanation of symbols]

1 Collective entrance machine 2a~2n
Residential unit a~n 21a CPU

Claims (2)

[Claims] [Claim 1] In an intercom system for an apartment complex, which receives a call from a collective entrance machine at a dwelling unit and enables an intercom call, a receiving circuit receives a call from the collective entrance machine to the dwelling unit intercom. and a line connection circuit that detects handset off of the intercom after receiving the call and connects a line between the intercom and the collective entrance machine, a timer that measures the line connection valid time for the line connection circuit, and a line connection valid time. An intercom system for an apartment complex, comprising a connection time extension means for extending the connection time. 2. The intercom system for an apartment complex according to claim 1, further comprising a notification means that sounds a notification sound and disconnects the line when a timer-set line connection valid time has elapsed. intercom system.