JP3443495B2 - Apartment intercom system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-family intercom system, and more particularly to a multi-family intercom system that indicates when a common entrance machine is in use by using a busy tone. 2. Description of the Related Art Conventionally, there has been known a multi-unit intercom apparatus shown in FIG. This multi-family intercom apparatus is provided with two common entrances, and includes a first common entrance machine SQ11 and a second common entrance machine SQ12, and a plurality of living room master units MQ11, MQ12,... The first joint entrance SQ11 and the second joint entrance SQ12 are connected to a plurality of living room masters MQ11, MQ12,... Via lines L11, L12,. [0003] The first entrance hall SQ11 is provided with a first speaker S.
, A first microphone M11, a first call control circuit 11, a first channel selection circuit 12, a first call detection circuit 13 to which first call buttons Bt31, Bt32,... Are connected, and a first control device. 14
And a usage indicator lamp LED1. The first call control circuit 11 includes a first speaker S11, a first microphone M11,
Connected to a first channel selection circuit 12 and a first call detection circuit 13,
The first channel selection circuit 12 is connected to a plurality of living room master units MQ11, MQ12,... Via lines L11, L12,. First
The call detection circuit 13 includes the first control device 14 and the first tuning circuit 1
2 and the first control device 14 is connected to the usage indicator LED1 connected to the reference potential point. [0004] The second entrance hall SQ12 is provided with a second speaker S.
, A second microphone M12, a second call control circuit 21, a second channel selection circuit 22, a second call detection circuit 23 to which second call buttons Bt41, Bt42,... Are connected, and a second control device. 24
And a use indicator LED2. The second call control circuit 21 includes a second speaker S12, a second microphone M12,
A second channel selection circuit 22 and a second call detection circuit 23 are connected,
The second channel selection circuit 22 is connected to a plurality of living room master units MQ11, MQ12,... Via lines L11, L12,. Second
The call detection circuit 23 includes the second control device 24 and the second channel selection circuit 2
2 and the second control device 24 is connected to the usage indicator LED2 connected to the reference potential point. [0005] The first control device 14 of the first common entrance machine SQ11
Is connected to the second control device 24 of the second entrance hall SQ12. In the multi-housing intercom apparatus configured as described above, when a call is made to, for example, the main room unit MQ11 from the second common entrance unit SQ12, the second call button Bt41 corresponding to the main room unit MQ11 is pressed. Second call button Bt
When 41 is pressed and a call is detected by the second call detection circuit 23, the second call control circuit 21 connects the second call control circuit 21 to the line L11, and the second call control circuit 21 and the second call selection circuit 2
2. Call the parent device MQ11 through the line L11.
If the room parent machine MQ11 responds, the second common entrance machine SQ12
Can communicate with the parent device MQ11 by the second speaker S12 and the second microphone M12. When a call is made at the second common entrance machine SQ12, the use indicator lamp LED2 is turned on by the second control device 24, and a signal is sent from the second control device 24 to the first control device 14 of the first common entrance device SQ11. Sent. [0008] The first control device 14 of the first common entrance machine SQ11
Indicates that the second common entrance machine SQ12 is in use (calling or talking) by turning on the use indicating lamp LED1, and the first call detection circuit 13 and the first call control circuit 11 , So that the first common entrance machine SQ11 and the parent devices MQ11, MQ12,... Similarly, when, for example, the first main entrance machine SQ11 calls the main room unit MQ1, the first call button Bt31 corresponding to the main room unit MQ11 is pressed. When the first call button Bt31 is pressed and the first call detection circuit 13 detects a call, the first channel selection circuit 12 connects the first call control circuit 11 to the line L11, and the first call control circuit 11 The office circuit main unit MQ11 is called via the station circuit 12 and the line L11. If the room parent machine MQ11 responds, the first common entrance machine S
In Q11, the first speaker S11 and the first microphone M11 can communicate with the parent device MQ11. When a call is made at the first common entrance machine SQ11, the use indicating lamp LED1 is turned on by the first control device 14, and a signal is sent from the first control device 14 to the second control device 24 of the second common entrance device SQ12. Sent. The second control unit 24 of the second entrance hall SQ12
Indicates that the first common entrance machine SQ11 is in use (calling or talking) by turning on the use indicating lamp LED2, and the second call detection circuit 23 and the second call control circuit 21 The second joint entrance machine SQ12 and the room master devices MQ11, MQ12,. [0012] In such a multi-unit intercom apparatus, since the in-use display of the common entrance machine is indicated by a lamp, the LED and peripheral parts (substrate, connector, LED cover, etc.) are used. The number of parts is increased, and there are drawbacks such as the necessity of making a hole for a use indicator lamp in a sturdy protective panel provided so as not to be broken by mischief in an overseas common entrance machine. [0013] In order to solve such a problem, the present invention provides a multi-family intercom apparatus which eliminates the use indicating lamp and generates a busy tone to indicate that another common entrance machine is in use. It is intended to be. [0014] In order to achieve the above-mentioned object, an apartment intercom system according to the present invention is connected to a plurality of main rooms and a plurality of main rooms via respective lines. The main common entrance machine and the living room parent machine are provided with a main common entrance machine and at least one additional common entrance machine connected via each line, and the additional common entrance machine is an extension corresponding to each of a plurality of living room main machines. To communicate with an additional call detection circuit for detecting a call by pressing a call button, an additional control device connected to the additional call detection circuit, and a main room unit controlled by the additional control device and called by an additional microphone and an additional speaker. A main call detection circuit for detecting a call by pressing a main call button corresponding to each of the plurality of living room master units, a main call detection circuit, and a main call detection circuit. A main control device connected to the extension control device, a channel selection circuit for selectively connecting and connecting each line by the main control device when a call is detected, and selecting a room master unit; and a main microphone controlled by the main control device. Main call control circuit for making a call with the parent device called by the main speaker, and main call detection circuit
Connect main speaker to line when call detected by
And a busy tone generation circuit installed at the main entrance
To the additional speaker of the additional joint entrance machine via the standby line
Connected and the call detected by the extension call detection circuit
Connect additional speakers to the line and
To the main loudspeaker of the main entrance hall via the standby line.
And a relay that follows . As described above, by generating the busy tone, it is possible to indicate that another common entrance apparatus is in use. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a housing intercom system according to the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the multi-dwelling intercom apparatus of the present invention includes a plurality of main rooms MQ1, MQ2,... And a plurality of main rooms MQ1, MQ2,.
The main common entrance machine SQ1 and at least one additional common entrance machine SQ2 are connected to each other. The additional common entrance machine SQ2 is an additional call button B corresponding to each of the plurality of living room main units MQ1, MQ2,.
An additional call detecting circuit 9 for detecting a call by pressing t21, Bt22,..., an additional control device 10 connected to the additional call detecting circuit 9, a call controlled by the additional control device 10, an additional microphone M2, and an additional speaker S2. And an additional call control circuit 8 for making a call with the designated parent device. [0019] Extension call button Bt of extension joint entrance machine SQ2
Are connected to the additional call detecting circuit 9, and the additional call detecting circuit 9 is connected to the additional call control circuit 8 via the additional control device 10. The additional call control circuit 8 is connected to an additional microphone M2 and an additional speaker S2. The main common entrance machine SQ1 includes a plurality of living room master machines M
Main call buttons Bt1 corresponding to Q1, MQ2,.
1, Bt12,..., A main call detection circuit 6 for detecting a call, and a main call detection circuit 6 and an additional common entrance machine SQ2.
The main control device 7 connected to the additional control device 10 and the main control device 7 when the call is detected.
Tuning circuit 2 for selecting and connecting 2, ... to select each room master
A main call control circuit 1 for controlling the main microphone M1 controlled by the main control device 7, a call with the living room main unit called by the main speaker S1, and a main speaker S1 when the main call detection circuit 6 detects a call. Is connected to the line, and when a call is detected by the additional common entrance machine SQ2, the busy tone generating circuit 4 is connected to the additional speaker S2 of the additional common entrance machine SQ2 via the standby line Z, and the switches SW1 and SW2 are connected. And a relay control circuit 5 for controlling the relay 3. The main control device 7 of the main entrance SQ1 includes an additional control device 10 of the additional entrance SQ2, a main call detection circuit 6, a busy sound generation circuit 4, a relay control circuit 5, a main communication control circuit 1, It is connected to the tuning circuit 2. The main call detection circuit 6 is connected to main call buttons Bt11, Bt12,..., And is connected to the busy tone generation circuit 4. The busy tone generating circuit 4 is connected to the busy side 2 of the switches SW1 and SW2 of the relay 3 via the standby line Z. The relay control circuit 5 is connected to the switches SW1 and SW2 of the relay 3, the switch SW1 is connected to the main speaker S1, and the switch SW2 is connected to the additional speaker S2 via the additional call control circuit 8 of the additional common entrance machine SQ2. The main call control circuit 1 includes the switches SW1 and SW2 of the relay 3.
, The main microphone M1, and the channel selection circuit 2. The channel selection circuit 2 is connected to a plurality of in-room master devices MQ1, MQ2,... Via lines L1, L2,. In the multi-dwelling intercom apparatus of the present invention configured as described above, two common entrance machines are provided at two places, and an additional common entrance machine SQ2 and a main common entrance machine SQ1 are installed. For example, when calling the room main unit MQ1 from the expansion joint entrance machine SQ2, the additional call button Bt21 corresponding to the room main unit MQ1 is pressed. When the additional call button Bt21 is pressed, a call is detected by the additional call detection circuit 9 and a signal indicating that the call of the parent device MQ1 is detected is sent from the additional control device 10 to the main control device 7 of the main common entrance unit SQ1. The main control device 7 controls the tuning circuit 2 and connects the parent device MQ1 to the main communication control circuit 1. The main control device 7 calls the parent device MQ1 through the main communication control circuit 1, the channel selection circuit 2, and the line L1. The main controller 7 controls the relay control circuit 5 and connects the switch SW1 of the relay 3 to the busy side 2. Normally, the switches SW1 and SW2 of the relay 3 are connected to the communication side 1. The busy tone generating circuit 4 includes a standby line Z, a relay 3
The main speaker S1 of the main entrance hall SQ1 transmits a busy sound via the busy side 2 of the switch SW1. When the main room unit MQ1 responds, since the switch SW2 of the relay 3 of the additional common entrance unit SQ2 is set to the call side 1, communication with the main room unit MQ1 becomes possible by the additional microphone M2 and the additional speaker S2. . Similarly, when, for example, the main room entrance machine SQ1 is to be called from the main common entrance unit SQ1, the main call button Bt11 corresponding to the room entrance main unit MQ1 is pressed. When the main call button Bt11 is depressed, a call is detected by the main call detection circuit 6, and the main control device 7 controls the channel selection circuit 2 to connect the room parent machine MQ1 to the main call control circuit 1. The main controller 7 calls the parent device MQ1 through the main call control circuit 1, the channel selection circuit 2, and the line L1. Main controller 7 controls relay control circuit 5 to connect switch SW2 of relay 3 to busy side 2. The busy tone generating circuit 4 is a switch for the standby line Z and the relay 3.
The busy sound is transmitted from the additional speaker S2 of the additional entrance hall SQ2 via the busy side 2 of SW2. When the main room unit MQ1 responds, the main common entrance unit SQ1 can communicate with the main room unit MQ1 by the main microphone M1 and the main speaker S1 because the switch SW1 of the relay 3 is set to the call side 1. . In the above-described embodiment, the description has been given of the case where the configuration of the intercom unit for the multi-family house is such that the main common entrance apparatus and the additional common entrance apparatus are one. However, the number of the additional common entrance apparatus is not limited to one. Absent. As is apparent from the above description, according to the multi-family intercom system of the present invention, the use of the common entrance machine is indicated by the busy tone, so that the number of parts can be reduced. Also, there is no need to make a hole for the lamp in the protective panel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing one embodiment of a multi-dwelling intercom apparatus according to the present invention. FIG. 2 is a block diagram showing a conventional apartment house intercom device. [Explanation of Signs] MQ1, MQ2,..., Main room L1, L2,..., Line SQ1,..., Main common entrance machine SQ2,. Common entrance machines Bt21, Bt22,... Additional call button M2... Additional microphone S2... Additional speakers Bt11, Bt12,. ... Main microphone S1 Main speaker Z Standby line 1 Main call control circuit 2 Tuning circuit 3 ······· Relay 4 ·································································································· − either 9: Additional call detection circuit 10: Additional control device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 9/00-9/10

Claims (1)

(57) [Claims] [Claim 1] A plurality of living room master units (MQ1, MQ2, ...),
The main common entrance machine (SQ1) connected to the plurality of living room main units via respective lines (L1, L2,...) And the main common entrance machine connected to the living room main unit via the respective main lines and the respective lines. At least one additional common entrance machine (SQ2), wherein the additional common entrance machine detects an additional call by pressing an additional call button (Bt21, Bt22, ...) corresponding to each of the plurality of living room masters. A detection circuit (9), an extension control device (10) connected to the extension call detection circuit, an extension microphone (M2) controlled by the extension control device and called by an extension speaker (S2). An additional call control circuit (8) for making a call, wherein the main common entrance device detects a call by pressing a main call button (Bt11, Bt12,...) Corresponding to each of the plurality of living room master devices. Call detection circuit (6) A main control unit connected to the main call detection circuit and the additional control unit; and when the call is detected, the main control unit selectively connects each of the lines to select each parent room unit. and channel selection circuit (2) is controlled main microphone by the main control device (M1), a main speaker main call control circuit for a call with the called a room master station by (S1) (1), the main
When the call detection circuit detects the call,
Connect the peaker to the line and connect the main entrance
The busy line generating circuit (4) is connected to the standby line (Z).
Connected to the additional speaker of the additional joint entrance machine via
And the call is detected by the additional call detection circuit.
When connecting the additional speaker to the line,
The busy tone generation circuit through the standby line
And a relay (3) connected to the main speaker of the customs machine.