JP2010035102A - Intercom system for collective housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save wiring between a controller and a living room master unit by providing a wiring-saving adapter. <P>SOLUTION: In an intercom system for collective housing, when connecting a collective entrance unit 1 to living room master units 2a, 2b, ..., via a controller 3 and a wiring-saving adapter 4, the controller superimposes a voice signal S2 and a video signal S3 from the collective entrance unit to produce an voice/video superimposed signal S4, and transmits the voice/video superimposed signal and a data signal S1 from the collective entrance unit to the living room master units via a two-wire data control line L2a and a two-wire voice/video control line L2b, which are different from each other, in a frequency division multiplexing manner. Furthermore, when superimposing the data signal and the voice/video superimposed signal from the controller, a data level adjusting section 400 of the wiring-saving adapter transmits a superimposed signal to the living room master units via a two-wire adapter line L3 after adjusting a signal level of the data signal to such a low level as to be received by the living room master units, and an impedance upper section 401 becomes high impedance with respect to the voice/video superimposed signal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apartment house intercom system installed in an apartment house such as an apartment, and more particularly to an apartment house intercom system in which wiring is reduced.

  Conventionally, as shown in the block diagram of FIG. 3, a (specific) room base unit 502 a, 502 b,... Is called from the collective entrance 501 via the controller 503, and a voice call is transmitted / received. A collective housing intercom system that can be established and can display video signals captured by the collective entrance 501 on the (specific) living room base units 502a, 502b,. (See Patent Document 1).

  In this collective housing intercom system, as a mode of wiring between the collective entrance machine 501 and the control machine 503, a data signal for control such as a call is transmitted and received between the collective entrance machine 501 and the room base units 502a, 502b,. The two-line data line L501a, the two-line audio line L501b for transmitting / receiving audio signals between the collective entrance 501 and the room masters 502a, 502b,..., And the room entry unit 502a from the collective entrance 501 , 502b,..., Two video lines L501c for transmitting video signals are applied. In addition, as a mode of wiring between the control unit 503 and the room master units 502a, 502b,..., A control data signal such as a call between the collective entrance machine 501 and the room master units 502a, 502b,. The audio signal and the video signal are transmitted by frequency division multiplexing to the two-way data control line L502a to be transmitted / received and the main entrance unit 501 to the room base units 502a, 502b, ..., and the room base units 502a, 502b, ... A two-line audio / video control line L502b for transmitting audio signals to the collective entrance 501 is applied.

Aiphone 2006-2007 edition general catalog (130th, 131st, 149th page, etc.)

  According to the collective housing intercom system described in the background art, as shown in FIG. 3, the wiring mode between the controller 503 and the living room parent units 502 a, 502 b,. Since this is a total of four lines of the two-line audio / video control line L502b, for example, when this apartment house intercom system is installed in a large-scale condominium or the like, the cost of the wiring material is increased due to the extension of the line. Not only was it expensive, but we had to secure a large wiring space.

  The present invention has been made to solve this problem, and an object of the present invention is to provide a collective housing intercom system in which wiring between a controller and a living room master is reduced.

  In order to achieve the above-mentioned object, the collective housing intercom system according to the first aspect of the present invention transmits a data signal from the collective entrance machine to the base unit to notify the call, and the base unit responds to the call. Then, the voice signal is transmitted to and received from the collective entrance machine to establish a call, and the video signal captured by the video image pickup unit of the collective entrance machine is transmitted to the parent room and displayed on the video display unit. In this case, an audio / video superimposed signal is generated by superimposing the audio signal and the video signal from the collective entrance machine, and the audio / video superimposed signal and the data signal from the collective entrance machine are respectively two different data control lines, This is a system having a controller for transmitting by frequency division multiplexing to a living room master unit via a two-line audio / video control line. A wire-saving adapter is provided between the control unit and the room base unit for superimposing data signals and audio / video superimposed signals from the control unit and transmitting them to the room base unit via the two-wire adapter line. ing. The wire-saving adapter is used to adjust the signal level of the data signal to a low level that can be received by the room master unit in order to suppress the data noise sound generated when the audio signal / video signal is superimposed on the data signal. Data level adjustment unit.

  Further, the apartment intercom system according to the second aspect of the present invention is the impedance upper of the first aspect of the present invention, wherein the wire-saving adapter has a high impedance to the audio / video superimposed signal from the controller. Department.

  Moreover, the collective housing intercom system which is the 3rd aspect of this invention WHEREIN: In the 1st aspect or 2nd aspect of this invention, the living room main | base station was line-reduced into 2 lines with the line-reduction adapter. Without using a dedicated device for separating the data signal and the audio / video superimposed signal into two lines, the wiring is simply distributed into two lines, and the data signal input unit and the audio / video superimposed signal Each is connected to the input unit.

  Moreover, the apartment house intercom system which is the 4th aspect of this invention is a 1st aspect thru | or 3rd aspect of this invention, and a wire-saving adapter is built in a controller.

  According to the multi-family housing intercom system of the present invention, when connecting the multi-purpose entrance machine to the living room base unit via the controller and the wire-saving adapter, the controller superimposes the audio signal and the video signal from the multi-purpose entrance machine. The audio / video superimposed signal is generated, and the audio / video superimposed signal and the data signal from the collective entrance are sent to the room via two different data control lines and two audio / video control lines. It can be transmitted to the main unit by frequency division multiplexing, and the wire-saving adapter superimposes the data signal and the audio / video superimposed signal from the controller and transmits them to the living room main unit via the two-line adapter line. In this case, the data level adjustment unit can adjust the signal level of the data signal to a low level that can be received by the room master unit. Thereby, not only the wiring between the control unit and the room master unit can be saved, but also the data noise sound generated when the audio signal / video signal is superimposed on the data signal can be suppressed.

  Further, according to the apartment house intercom system of the present invention, the impedance upper part of the wire-saving adapter has a high impedance with respect to the audio / video superimposed signal transmitted from the controller to the living room master unit. It is possible to prevent the signal from returning to the controller.

  In addition, according to the apartment house intercom system of the present invention, the living room master unit separates the data signal and the audio / video superimposed signal that have been reduced to two lines by the line saving adapter into two lines. Without using a dedicated device, the wiring can be simply distributed into two lines.

  Furthermore, according to the apartment house intercom system of the present invention, the system can be simplified by incorporating the wire-saving adapter in the controller.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment to which an apartment house intercom system of the present invention is applied will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a specific configuration of an apartment house intercom system according to an embodiment of the present invention. This collective housing intercom system is installed in a collective housing such as a condominium, and includes a collective entrance machine 1 installed in a collective entrance and a plurality of dwelling units (such as a 101 room, a 102 room,...). .., And a control unit 3 for controlling the system provided between the collective entrance 1 and the room masters 2a, 2b,. And a wire-saving adapter 4 for saving the wiring between the control device 3 and the room master devices 2a, 2b,.

  In this collective housing intercom system, the collective entrance machine 1 and the controller 3 are connected via a two-line data line L1a, a two-line audio line L1b, and a two-line video line L1c, respectively. The controller 3 and the line-saving adapter 4 are connected via a two-line data control line L2a and a two-line audio / video control line L2b, respectively. Furthermore, the controller 3 and the room master units 2a, 2b,... Are connected via a two-wire adapter line L3.

  Next, a specific configuration of the collective entrance machine 1 will be described. This collective entrance machine 1 is for a person at a collective entrance, for example, a visitor, to call a resident in a room among a plurality of dwelling units to establish a call. Operation unit 100, entrance machine display unit 101, entrance machine call unit 102, entrance machine voice processing unit 103, video imaging unit 104, entrance machine video processing unit 105, entrance machine CPU 106, entrance machine data I / F (interface) 107, An entrance machine audio I / F 108 and an entrance machine video I / F 109 are provided.

  In this collective entrance machine 1, the entrance machine operation unit 100 is detected by the entrance machine CPU 106 and performs an operation (call operation) for a visitor to call a specific resident. For example, the entrance machine display unit 101 includes operation buttons on a touch panel disposed on the front surface of the apparatus 101, and numeric keypad buttons and call buttons provided on the housing surface of the collective entrance.

  The entrance machine display unit 101 is controlled by the entrance machine CPU 106 and displays operation information of the entrance machine operation unit 100. For example, the entrance machine display unit 101 includes various display media such as an LCD, a PDP, and an organic EL display. Yes.

  The entrance machine call unit 102 inputs / outputs a voice (sending voice, receiving voice) for a visitor to establish a call with a specific resident, and includes, for example, a microphone 120 and a speaker 121. Has been. Further, the entrance machine voice processing unit 103 is controlled by the entrance machine CPU 106 and performs predetermined signal processing on a voice (transmitted voice) signal input to the microphone 120 constituting the entrance machine call unit 102. While performing modulation (and amplification), it performs predetermined signal processing on the audio (received audio) signal output from the speaker 120 constituting the entrance unit communication unit 102, for example, for demodulating (and amplifying) at baseband It is.

  The image capturing unit 104 is controlled by the entrance machine CPU 106 and captures the image of the visitor who performed the calling operation and the image in the vicinity of the collective entrance. For example, the image capturing unit 104 may be a variety of cameras such as a CCD and a CMOS. It is configured. The entrance machine video processing unit 105 is controlled by the entrance machine CPU 106 and performs predetermined signal processing on the video signal captured by the video imaging unit 102, for example, for FM modulation (and amplification). .

  The entrance machine CPU 106 controls the components of the collective entrance machine 1 and performs predetermined signal processing on the transmitted and received data signals, for example, FSK modulation and demodulation. The entrance machine data I / F 107 is used to form a bidirectional signal transmission path between the entrance machine CPU 106 and the two data lines L1a. The entrance machine audio I / F 108 is used to form a bidirectional signal transmission path between the entrance machine audio processing unit 103 and the two audio lines L1b. Further, the entrance machine video I / F 109 is for forming a signal transmission path from the entrance machine video processing unit 105 to the two video lines L1c.

  Next, a specific configuration of the living room master units 2a, 2b,... Will be described. Each of the room master units 2a, 2b,... Has a similar configuration and is assigned an individual ID, for example, a room number, and a call from a visitor at the main entrance is notified and responds to this call. This is for a resident to establish a call, and includes a master unit operation unit 200, a master unit call unit 201, a master unit voice processing unit 202, a master unit display unit 203, a master unit video processing unit 204, a master unit CPU 205, A master unit data I / F 206, a master unit audio / video demultiplexing unit 207, a master unit audio I / F 208, and a master unit video I / F 209 are provided.

  In the living room master units 2a, 2b,..., The master unit operation unit 200 is detected by the master unit CPU 205, and an operation (response operation) for the resident to respond to a call from a visitor is being established. Each operation for terminating a call (end call operation) is performed, and includes, for example, an operation button on a touch panel arranged on the front surface of the main unit display unit 203 and a call button provided on the casing surface of the room main unit. Has been.

  The base phone call unit 201 inputs / outputs a voice (transmitted voice, received voice) signal for a resident to establish a call with a visitor, and includes a microphone 210 and a speaker 211, for example. The speaker 211 is controlled by the master CPU 205 and can output a call from a visitor. The base unit voice processing unit 202 is controlled by the base unit CPU 205 and performs predetermined signal processing on a voice (speech voice) signal input to the microphone 210 constituting the base unit call unit 201. While performing modulation (and amplification), performing predetermined signal processing on a voice (received voice) signal output from the speaker 211 constituting the base unit communication unit 201, for example, performing demodulation (and amplification) in baseband It is.

  The base unit display unit 203 is controlled by the base unit CPU 205 and outputs a video signal picked up by the video image pickup unit 104 of the collective entrance 1, call information indicating that there is a call from a visitor, This is for displaying the operation information of the operation unit 200, and is composed of various display media such as an LCD, a PDP, and an organic EL display. The master unit video processing unit 204 is controlled by the master unit CPU 205 and performs predetermined signal processing on the video signal to be displayed on the master unit display unit 201, for example, FM demodulation (and amplification). .

  The master unit CPU 205 controls the constituent parts of the room master units 2a, 2b,... And performs predetermined signal processing on the transmitted / received data signals, for example, for performing FSK modulation / demodulation. The base unit data I / F 206 forms a bidirectional signal transmission path between the base unit CPU 205 and the two-line adapter line L3, and is frequency-divided from the line-saving adapter 4 via the two-line adapter line L3. This is for receiving the multiplexed data signal and transmitting the data signal from the master CPU 205 to the two adapter lines L3.

  The master audio / video demultiplexing unit 207 receives the audio / video superimposed signal transmitted by frequency division multiplexing from the line-saving adapter 4 via the two-line adapter line L3, and receives the audio signal and video signal. And a voice (transmitted voice) signal input to the microphone 210 constituting the base unit call unit 201 is transmitted to the two-line adapter line L3. The master audio I / F 208 is for forming a bidirectional signal transmission path between the master audio processor 202 and the master audio / video demultiplexing unit 207. Further, the parent device video I / F 209 is for forming a signal transmission path from the parent device audio / video demultiplexing unit 207 to the parent device video processing unit 204.

  Next, a specific configuration of the controller 3 will be described. The controller 3 includes a controller audio processing unit 300, a controller image processing unit 301, a controller CPU 302, a controller audio / video demultiplexing unit 303, an entrance side controller data I / F 304, an adapter side controller data. An I / F 305, an entrance-side controller audio I / F 306, an adapter-side controller audio I / F 307, an entrance-side controller image I / F 308, and an adapter-side image I / F 309 are provided.

  In the controller 3, the controller voice processing unit 300 is controlled by the controller CPU 302 and performs predetermined signal processing on the transmitted / received voice (transmitted voice, received voice) signal, for example, for amplification. is there. The controller video processing unit 301 is controlled by the controller CPU 302 and performs predetermined signal processing on the received video signal, for example, for amplification.

  The controller CPU 302 is for controlling, for example, FSK modulation / demodulation, which controls each component of the controller and performs predetermined signal processing on transmitted / received data signals. Further, the controller audio / video demultiplexing unit 303 superimposes the audio signal from the controller audio processing unit 300 and the video signal from the controller video processing unit 301 to perform two-line audio / video control line by frequency division multiplexing. In order to transmit to L2b and to receive the audio signal transmitted from the room master units 2a, 2b,... Via the two-line audio / video control line L2b and to transmit to the controller audio processing unit 300 belongs to.

  The entrance side controller data I / F 304 is for forming a bidirectional signal transmission path between the controller CPU 302 and the two data lines L1a. The adapter-side controller data I / F 305 is used to form a bidirectional signal transmission path between the controller CPU 302 and the two data control lines L2a. Further, the entrance-side controller audio I / F 306 is for forming a bidirectional signal transmission path between the controller audio processor 300 and the two audio lines L1b. The adapter-side controller audio I / F 307 is for forming a bidirectional signal transmission path between the controller audio processor 300 and the controller audio / video demultiplexer 303. The entrance-side controller image I / F 306 is used to form a signal transmission path from the 2-line image line L1c to the controller image processing unit 301. Further, the adapter-side controller video I / F 307 is used to form a signal transmission path from the controller video processor 301 to the controller audio / video demultiplexer 303.

  Next, a specific configuration of the wire saving adapter 4 will be described. The wire saving adapter 4 includes a data level adjustment unit 400 and an impedance upper unit 401.

  In the line saving adapter 4, the data level adjustment unit 400 is configured to superimpose an audio signal / video signal on a data signal transmitted by frequency division multiplexing from the controller 3 via the two data control lines L2a. Is used to adjust the signal level of the data signal to a low level that can be received by the room master units 2a, 2b,. The impedance upper unit 401 has a high impedance with respect to an audio / video superimposed signal transmitted by frequency division multiplexing from the controller 3 via the two-line audio / video control line L2b. An audio frequency band upper circuit 410 for a signal frequency band, for example, 50 Hz to 10 kHz, and a video frequency band upper circuit 411 for a video signal, for example, 6 MHz to 18 MHz, are supplied from the data level adjustment unit 400. It is connected in series between two adapter lines L3. The connection from the data level adjustment unit 400 to the two-line adapter line L3 is limited to the connection of the audio frequency band upper circuit 410 and the video frequency band upper circuit 411 as shown in FIG. For example, it is also preferable to connect a video frequency band upper circuit 411 and an audio frequency band upper circuit 410 (not shown) via a normal path.

  In the housing complex intercom system according to the embodiment of the present invention configured as described above, the specific operation will be described with reference to the block diagram of FIG. 1 and the voltage / frequency characteristic diagrams of FIGS. 2 (A) and 2 (B). To explain. 2A and 2B respectively show the voltage level and frequency of each of the data signal, voice (transmitted voice, received voice) signal and video signal applied in the embodiment of the present invention. It shows the relationship.

  In the collective housing intercom system shown in FIG. 1, a visitor at the collective entrance calls a specific resident. Here, among the living room master units 2 a, 2 b,... When calling a resident in the room, the operation information displayed on the entrance display unit 101 of the collective entrance 1 is referred to, and the entrance operation is performed for the room number assigned in advance to the called room master 2a. When a predetermined calling operation such as input is performed using the unit 100, the front door CPU 106 that has detected this operation generates a data signal S1 (for calling) having voltage / frequency characteristics shown in FIG. At the same time, control is performed so that the front door communication unit 103 is activated to form a signal transmission path between the microphone 120 and the speaker 121 constituting the front door communication unit 102 and the front door voice I / F 108. Furthermore, it is possible to control the image capturing unit 104 and the entrance image processing unit 105 to be active.

  Further, the data signal S1 generated by the entrance CPU 106 of the collective entrance machine 1 is subjected to predetermined signal processing, for example, FSK modulation, and then the entrance machine data I / F 107, the two data lines L1a, and the control. It is transmitted to the controller CPU 302 via the entrance machine side controller data I / F 304 of the machine 3. The controller CPU 302 that has received the data signal S1 and performed predetermined signal processing, for example, FSK demodulation, detects that there is a call from the collective entrance machine 1 to the room master unit 2a, and the controller voice processing unit 300 The controller video processing unit 301 and the controller audio / video demultiplexing unit 303 are controlled so as to be active, respectively, and, for example, after the FSK modulation is performed on the received data signal S1, the adapter side controller data I / F305 can be transmitted to the data level adjustment unit 400 of the line saving adapter 4 via the two data control lines L2a.

  In addition, the voice (transmission voice) of the visitor input to the handset microphone 120 constituting the entrance unit call unit 102 of the collective entrance unit 1 is subjected to predetermined signal processing, for example, a base, by the entrance unit speech processing unit 103. 2 (A) and 2 (B), which have been modulated (and amplified) in the band, are the sound signal S2 having the voltage / frequency characteristics, respectively, and the front door sound I / F 108, the two-wire sound line L1b, and the front door of the controller 3. It is transmitted to the controller voice processing unit 300 via the machine side controller voice I / F 306, and after being subjected to predetermined signal processing, for example, amplification, by this controller voice processor 300, the adapter side controller voice I / F The data is transmitted to the controller audio / video demultiplexing unit 303 via F307.

  Furthermore, the video of the visitor imaged by the video imaging unit 104 of the collective entrance machine 1 and the video in the vicinity of the collective entrance are subjected to predetermined signal processing such as FM modulation (and amplification) by the entrance video processing unit 105. 2), the video signal S3 having the voltage / frequency characteristics shown in FIGS. 2A and 2B, respectively, is the entrance machine image I / F 109, the 2-line video line L1c, and the entrance side controller image I of the controller 3. / F308 is transmitted to the controller video processing unit 301. The controller video processing unit 301 performs predetermined signal processing, for example, after being amplified, and then controlled via the adapter side controller video I / F309. It is transmitted to the machine audio / video demultiplexing unit 303.

  Here, the controller audio / video demultiplexing unit 303 of the controller 3 generates an audio / video superimposed signal S4 obtained by superimposing the received audio signal S2 and video signal S3 by frequency division multiplexing, and then two-line audio. / Send to the video control line L2b.

  The data level adjusting unit 400 of the wire saving adapter 4 is a signal level of the data signal S1 received from the controller 3 via the two data control lines L2a, here, the voltage level V1 shown in FIG. Can be received at a low level that can be received by the living room master units 2a, 2b,..., For example, the line length of the adapter line L3 and the number of the living room master units, that is, the number of dwelling units, etc. Here, the voltage can be lowered to the voltage level V2 (≈V1 / 2) shown in FIG. Thereby, for example, the data noise sound in a predetermined frequency band of 5 to 10 kHz, which is generated when the audio / video signal superimposing signal S4 is superimposed on the data signal S1, is suppressed as shown in FIG. The level-adjusted data signal S1a is transmitted to the two-line adapter line L3 via the impedance upper unit 401.

  In the impedance upper unit 400 of the wire-saving adapter 4, the audio frequency band upper circuit 410 among the audio frequency band upper circuit 410 and the video frequency band upper circuit 411 connected in series is an audio / frequency band upper circuit 410. The audio / video superimposed signal S4 transmitted by frequency division multiplexing from the controller 3 via the video control line L2b has a high impedance in the frequency band of 50 Hz to 10 kHz, for example, while the video frequency band upper circuit. 411 has a high impedance in the frequency band of, for example, 6 MHz to 18 MHz with respect to the similar audio / video superimposed signal S4. Therefore, the audio / video superimposed signal S4 is supplied from the data level adjustment unit 400 and the two data control lines. The data level adjustment unit 400 is not returned to the controller 3 via L2a. Is superimposed on the data signal S1a by the frequency division multiplexing and transmitted to the two adapter lines L3.

  Each of the master units 2a, 2b,... Is saved in two lines by the line-saving adapter 4 and then transmitted by being superimposed by frequency division multiplexing via the two-line adapter line L3. Of the coming data signal S1a and audio / video superimposed signal S4, the signal level of the data signal S1a is a low level that can be received by the room master unit as described above, so the data signal S1a and the audio / video superimposed signal S4 Without using a dedicated device for separating each of the two lines, the wiring is simply distributed into two lines, the master data I / F 206 as the input part of the data signal S1a, and the audio / video superimposition Each can be connected to a master audio / video demultiplexing unit 207 which is an input unit for the signal S4.

  Further, the master CPU 205 of the living room masters 2a, 2b,... Performs predetermined signal processing, for example, FSK demodulation, on the data signal S1a received via the master data I / F 206, and then performs this data processing. The room number added to the signal S1a is checked against the room number assigned in advance to the parent machine. Only when the room number matches, it is detected that there is a call from a visitor at the main entrance. Then, a ringing tone, a voice message, or the like can be acoustically output from the speaker 211 that constitutes the base unit call unit 201 to make a call notification. Here, only the master unit CPU 205 of the master unit 2a that is the call destination has the same room number, and the master unit CPU 205 performs the above-described call notification by sound output, the master unit voice processing unit 202, the video display unit 203, The master unit video processing unit 204 and the master unit audio / video demultiplexing unit 207 can be controlled to be active, and the video display unit 203 can display text messages and pictures indicating that there is a call from a visitor. Data and the like can also be displayed.

  The master audio / video demultiplexing unit 207 of the living room master 2a uses the audio / video superimposed signal S4 transmitted from the controller 3 by frequency division multiplexing via the two-wire adapter line L3 as the audio signal S2. And the video signal S3, and the audio signal S2 is transmitted to the master audio processing unit 202 via the master audio I / F 208, while the video signal S3 is sent via the master video I / F 209. It can be transmitted to the parent device video processing unit 204.

  Further, the base unit voice processing unit 202 of the living room base unit 2a performs predetermined signal processing on the received voice signal S2, for example, demodulation (and amplification) in baseband, and then the speaker constituting the base unit call unit 201. By transmitting to 211, it is possible to output from the speaker 211, as the received voice, the voice of the visitor (sent voice) input to the microphone 120 constituting the entrance unit call unit 102 of the entrance hall 1.

  Further, the master video processing unit 204 of the living room master unit 2a performs predetermined signal processing on the received video signal S3, for example, FM demodulation (and amplification), and then transmits the video signal to the video display unit 203. The video display unit 203 can display the video of the visitor imaged by the video imaging unit 104 of the entrance machine 1 and the video of the surrounding environment of the collective entrance.

  The resident's voice (sent voice) input to the base unit microphone 210 constituting the base unit call unit 201 of the living room base unit 2a is subjected to predetermined signal processing by the base unit voice processing unit 202, for example, base As the audio signal S5 modulated (and amplified) in the band, the main unit audio I / F 208, the main unit audio / video demultiplexing unit 207, the two-line adapter line L3 (the line-saving adapter 4), the two-line audio Video control line L2b, controller audio / video demultiplexing unit 303 of controller 3, adapter side controller audio I / F 307, controller audio processor 300, entrance side controller audio I / F 306, two-line audio line L1b is transmitted to the entrance side audio processing unit 103 via the entrance unit audio I / F 108 of the collective entrance unit 1, and the entrance unit audio processing unit 103 performs predetermined signal processing, for example, demodulation in the baseband (and Amplification) was performed The voice of the resident (transmission voice) input to the microphone 120 constituting the base unit call unit 201 of the room base unit 2a by being transmitted to the speaker 121 constituting the entrance unit call unit 102 as the reception voice Can be output from the speaker 121.

  As is apparent from the above description, in the collective housing intercom system according to the embodiment of the present invention, as the configuration, the system in which the controller 3 and the wire-saving adapter 4 are provided independently has been described. It is not limited to this aspect. For example, in the aspect in which the wire-saving adapter 4 is built in the controller 3, that is, the data level adjustment unit 400 and the impedance upper unit 401 of the wire-saving adapter 4 are respectively provided in the controller as components of the controller 3. There may be, and according to this aspect, the system can be simplified.

  Further, according to the apartment house intercom system of the present invention, it has been described with a specific embodiment, but is not limited to this form, and any configuration known so far as long as the effect of the present invention is exhibited. It goes without saying that even such a system can be adopted.

FIG. 1 is a block diagram showing a specific configuration of an apartment house intercom system according to an embodiment of the present invention. 2A and 2B respectively show the voltage level of each of the data signal, voice (transmitted voice, received voice) signal and video signal applied in the apartment house intercom system according to the embodiment of the present invention. FIG. 6 is a voltage / frequency characteristic diagram showing the relationship between the frequency and the frequency. FIG. 3 is a block diagram showing a configuration of a collective housing intercom system according to a conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Collective entrance machine 104 ... Image pick-up part 2a, 2b, ... Living room master 203 ... Video display part 3 ... Controller 4 ... Wire-saving adapter 400 ... Data level adjustment part 401 …… Impedance upper part L2a …… 2-wire data control line L2b …… 2-wire video / audio control line L3 …… 2-wire adapter line

Claims (4)

A data signal from the collective entrance machine (1) is transmitted to the living room parent machine (2a, 2b,...) To notify the call, and the living room parent machine responds to the call and communicates with the collective entrance machine. The voice signal is transmitted and received to establish a call, and the video signal captured by the video imaging unit (104) of the collective entrance is transmitted to the living room master unit and displayed on the video display unit (203). Hits the,
An audio / video superimposed signal is generated by superimposing the audio signal and the video signal from the collective entrance machine, and the audio / video superimposed signal and the data signal from the collective entrance machine are respectively two different lines. A multi-dwelling house intercom system having a controller (3) for frequency division multiplexing transmission to the living room master unit via a data control line (L2a) and a two-line audio / video control line (L2b),
The data signal and the audio / video superimposed signal from the controller are superimposed between the controller and the room master and transmitted to the room master via a two-wire adapter line (L3). A wire-saving adapter (4) is provided for
The wire-saving adapter has a low signal level that can be received by the parent device in order to suppress data noise sound generated when the audio signal / video signal is superimposed on the data signal. A collective housing intercom system comprising a data level adjustment unit (400) for adjusting to a level.   The collective housing intercom system according to claim 1, wherein the wire-saving adapter includes an impedance upper unit (401) having a high impedance with respect to an audio / video superimposed signal from the controller.   The living room master unit can be wired without using a dedicated device for separating the data signal and the audio / video superimposed signal, which have been reduced to two lines by the line saving adapter, into two lines. 3. An apartment house intercom system according to claim 1 or 2, wherein said two lines are simply distributed to be connected to said data signal input section and audio / video superimposed signal input section, respectively. .   The collective housing intercom system according to any one of claims 1 to 3, wherein the wire-saving adapter is built in the controller.

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