JPH1168894A - Interphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability by making the constitution of a selecting means, which specifies an extension speech communication destination, simple by having a button type selection switch, a displaying part which sends and shows interphone information of an extension speech communication destination every time the selection switch is operated and a decision switch which decides an extension speech communication destination through the interphone information that is shown on the displaying part. SOLUTION: A selecting means 4 has one push button type selection switch 5, a displaying part 6 which sends and shows interphone information of an extension speech communication destination every time the switch 5 is operated and a decision switch 7 which decides an extension speech communication destination through the displayed interphone information. The means 4 sends 'extension 1' to 'extension m' (m is the number of interphones), 'group call', 'intercom 1', 'intercom 2' and 'extension 1' to the part 6 and shows them every time it operates the switch 5 and also repeatedly performs display. It selects display item by performing a push operation of the switch 7 and simultaneously starts to send a call signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interphone for connecting an extension telephone by connecting a plurality of other interphones.

[0002]

2. Description of the Related Art An example of a conventional intercom is shown in FIGS. The intercom 30 connects a plurality of other interphones via a two-wire transmission line so that an extension call can be made with the other interphone.
The intercom 30 includes, in a housing 31, a handset 32 for a telephone call and a selection unit 33 for selecting an interphone to which an extension call is made. The selection means 33
, As shown in FIG. 7, comprises selection switches 33a to 33i for selecting a specific intercom of the extension call destination. The selection switches 33a to 33f are respectively connected to the intercom having the extension number 1, the intercom 2 having the extension number 2,. . . . The switch operated when selecting the extension 6 intercom as the extension call destination. The selection switch 33g is a switch operated when calling from the extension 1 intercom to the extension 6 interphone at once, and the selection switch 33h is The selection switch 33i, which is operated when selecting the doorphone slave 1 installed outdoors as a destination, is a switch operated when selecting the doorphone 2 installed outdoors as the destination.

[0003]

However, in the above-described conventional intercom, the selection switches 33a to 33a are provided.
There is also a problem that the number of the switches 33i is large and it is difficult to understand, and the selection switch itself becomes small due to space restrictions, making it difficult to operate.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an intercom having high operability with a simple configuration of a selection means for designating an extension call destination.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for connecting a plurality of other interphones, performing an extension call with the other interphones, An intercom having a selection means for selecting a specific intercom of an extension call destination, wherein the selection means comprises a button-type selection switch, and a display unit for sending and displaying intercom information of the extension call destination each time the selection switch is operated. And a decision switch for deciding an extension call destination based on the intercom information displayed on the display unit.

According to a second aspect of the present invention, there is provided an intercom having a plurality of other interphones connected thereto, making an extension call with the other interphones, and having a selection means for selecting a specific interphone of the extension call destination. The selection means, a rotary selection switch, a display unit for sending and displaying the intercom information of the extension call destination every time the selection switch is rotated, and the extension call destination by the interphone information displayed on the display unit. And a decision switch for deciding.

[0007] The third aspect of the present invention is the first or second aspect.
In any one of the inventions, when the decision switch is operated, a call signal is transmitted to another intercom.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.

As shown in FIG. 2, the intercom 1 of the present embodiment includes a plurality of other intercoms 1 and a door phone slave unit 11.
Are connected by a two-wire transmission line so that an extension call can be made with the other intercom 1. In FIG. 2, the intercom 1 with the extension number n is represented as an interphone 1-n (n is an arbitrary integer), and the extension number m (m is the number of interphones connected).
Is the last intercom.

The intercom 1 comprises a housing 2, a handset 3 for a call, a selection means 4 for designating an extension call destination, a speaker 8, and a ring tone adjustment switch 9.
And a call-in-progress lamp 10. Speaker 8
Outputs a ringing tone from the doorphone handset 11 or another intercom 1 or an alarm sound which is output upon receiving a signal from the sensor when a fire sensor, security sensor, or the like is connected. The ring tone adjustment switch 9 adjusts the volume of the ring tone output from the speaker 8. Calling lamp 10
Is lit not only when the intercom 1 is in a call but also when the other interphones 1 and the intercom 11 and the other interphone 1 are in a call, indicating that a new call cannot be interrupted. When all the intercoms 1 and doorphone slaves 11 end the call or do not talk, the in-call lamp 10 is turned off and turned off.

The selection means 4 includes a push button type selection switch 5, a display unit 6 for sending and displaying intercom information of an extension destination each time the selection switch 5 is operated, and a display unit 6.
And a decision switch 7 for deciding an extension call destination on the basis of the intercom information displayed in the. The display unit 6 includes, for example, a liquid crystal screen or the like. In the case of the present embodiment, the “intercom information” is an extension number or the like. The selection means 4
Each time the selection switch 5 is pressed, “ext. 1”, “ext. 2”,..., “Ext. M”, “group call”, “paging”, “doorphone 1”, “doorphone 2”, “ .., "Extension 1", "extension 2",... Then, when the decision switch 7 is pressed while the desired call destination is displayed on the display unit 6, the displayed extension number of the intercom 1 or the number of the intercom slave unit is selected as the call destination, and the selected call destination is selected. A call signal with an address or the like is transmitted to the intercom 1 or the intercom slave 11 that has been set. That is, the decision switch 7 also has a role of a paging switch for simultaneously starting transmission of a paging signal.
The intercom 1 or the intercom slave set 11 that has received the calling signal in which the own address is set sounds a ringing sound.

The value of m can be arbitrarily changed and registered. That is, it is possible to prevent the extension information of the unconnected interphone and the information of the unconnected intercom from being displayed on the display unit 6, and to minimize the operation of the selection switch 4. Also, at the time of "group call", a plurality of intercoms to be called can be selected and registered in combination. To shift to the “registration mode” for registering these, for example, the selection switch 5 and the determination switch 7 are simultaneously pressed for a certain period of time. In the “registration mode”, the setting of the numerical value m and the combination of the plurality of intercoms 1-n to be called in the “group calling” are registered. At this time, the intercom information for registering the selection switch 5 may be sent to the display unit 6 for display, and the determination switch 7 may be a switch for determining the intercom information displayed on the display unit 6 as registration information.

FIG. 3 is a block circuit diagram of the intercom 1. 12 is a processing circuit such as a CPU, 13 is a sound generation circuit,
14 is a call circuit, 15 is a call detection circuit, 16 is a transmission circuit, 17 is a memory, 18a is a terminal for connecting the intercom handset 11, 18b and 18c are terminals for connecting the other intercom 1, and 18d is a fire sensor or crime prevention. A terminal 19 for connecting a sensor such as a sensor is a hook switch 19 for detecting whether the handset 3 is on-hook or off-hook.
Each of the terminals 18a to 18d is actually composed of two terminals and connects to a two-wire transmission line. The terminal 18a requires two systems for a type in which two doorphones 11 are connected.

The sound generation circuit 13 causes the speaker 8 to output a desired ringing sound, alarm sound, or the like under the control of the processing circuit 12. The communication circuit 14 is driven when the handset 3 is off-hook and the hook switch 19 is turned on, and the doorphone slave 11 or the terminal 18 connected to the terminal 18a is driven.
A communication path is formed for the other intercom 1 connected to the b and 18c, and a bidirectional communication signal is processed. The call detection circuit 15 detects a call signal transmitted from the intercom slave unit 11 and transmits the detected signal to the processing circuit 12.
Drive. The transmission circuit 16 multiplexes transmission signals such as control signals and communication signals transmitted between the other interphones 1 connected to the terminals 18b and 18c, and transmits the multiplexed transmission signals bidirectionally. In the memory 17, information such as the numerical value m and information on a combination of a plurality of intercoms 1-n called at the time of "group call" is written and registered by the processing circuit 12.

Each time the processing circuit 12 detects the operation of the selection switch 5, the "extension 1", "extension 2",..., "Extension m", "group call", "simultaneous call", "doorphone" 1 "," Intercom 2 "," Ext. 1 "," Ext. 2 ", ...
... Display information is transmitted to the display unit 5. Then, when the operation of the decision switch 7 is detected, a call signal is generated for a specific other intercom 1 or door phone slave 11 corresponding to the display information transmitted to the display unit 6 at that time, and the transmission circuit 16 and a desired terminal 18a to 18c, a specific other intercom 1 or door phone handset 1
Transmit to 1. Further, the processing circuit 12 includes the call detection circuit 1
5 generates a doorphone ringing sound from the sound generation circuit 13 and the speaker 8 when the ringing signal is detected,
When a call signal is detected from another intercom 1 via the transmission circuit 16, the sound generation circuit 13 and the speaker 8
Generates a more internal ringing tone.

FIGS. 4 and 5 show a second embodiment according to the present invention. The second embodiment is different from the first embodiment in the form of the selection means 20. Other points are the same as in the first embodiment.

The selection means 20 includes a rotary selection switch 21 and a display unit 22 for sending and displaying intercom information of the extension call destination each time the selection switch 21 is rotated.
And a decision switch 23 for deciding an extension call destination on the intercom displayed on the display unit 22.

On the selection switch 21, characters of extension numbers "1" to "6" are written in a circular shape as intercom information, and the display unit 22 displays characters of the extension number written on the selection switch 21. A window hole is formed on the surface of the housing 2 so as to display one of them. Each time the selection switch 21 is turned, the extension numbers “1” to “6” of the intercom are displayed on the display unit 22.
When the intercom extension number to be selected as the extension call destination is displayed on the display unit 22, when the enter switch 23 is pressed,
A call signal with an address or the like is transmitted to the selected intercom 1 or door phone slave unit 11. From the intercom 1 or the intercom slave unit 11 that has received the calling signal to which the own address is set, a calling sound is generated.

The first and second embodiments of the present invention have been described above. In both embodiments, the decision switches 7, 23
And a call switch for calling an extension destination may be provided separately. Also, the intercom information of the extension call destination displayed on the display unit 6 is the extension number in the above embodiment, but may be any other character information or information that can distinguish the intercom even in pictogram display.

[0020]

According to the first or second aspect of the present invention, it is possible to simplify the selection means for specifying the extension destination.
Operability can be improved. In particular, in the invention of the first aspect, it is possible to prevent the display of the extension display of the interphone 1 that is not connected.

In the invention of claim 3, in addition to the effect of claim 1 or 2, a call signal is transmitted to the selected intercom as soon as a switch for determining an extension call destination is operated. Good call operability.

[Brief description of the drawings]

FIG. 1 is an external view showing a first embodiment of the present invention.

FIG. 2 is a system diagram of the same.

FIG. 3 is a block circuit diagram of the same.

FIG. 4 is an external view showing a second embodiment of the present invention.

FIG. 5 is a partially enlarged view of the same.

FIG. 6 is an external view of a conventional technique.

FIG. 7 is a partially enlarged view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intercom 4 Selection means 5 Selection switch 6 Display part 7 Decision switch 20 Selection means 21 Selection switch 22 Display part 23 Determination switch

Claims (3)

[Claims] 1. An intercom, comprising: a plurality of other interphones connected to each other to perform an extension call with the other interphone, and a selection means for selecting a specific interphone to which the extension calls. A button-type selection switch, a display unit that sends and displays the intercom information of the extension call destination each time the selection switch is operated, and a decision switch that determines the extension call destination based on the intercom information displayed on the display unit. An intercom, comprising: 2. An intercom, comprising: a plurality of other interphones connected to each other, an extension call being made with the other interphones, and a selection means for selecting a specific interphone to which the extension calls. A rotary selection switch, a display unit that sends and displays the intercom information of the extension call destination each time the selection switch is rotated, and a decision switch that determines the extension call destination based on the intercom information displayed on the display unit. And an intercom. 3. The interphone according to claim 1, wherein a call signal is transmitted to another interphone when the decision switch is operated.