JP2006270721A - Interphone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interphone system wherein a wireless extended master unit and a wired extended master unit can inexpensively be assembled with a simple method. <P>SOLUTION: In the wireless interphone system provided with: an interphone master unit 2; a doorphone slave unit 1 making communication with the interphone master unit 2; a wireless adaptor 3 in wired connection to the interphone master unit 2; a wireless extended master unit 5 for making wireless communication with the interphone master unit 2 or the doorphone slave unit 1 via the wireless adaptor 3; and a wired extended master unit 4 for wired connection to the interphone master unit 2, the wireless adaptor 3 is not directly connected to the doorphone slave unit 1 but is wired-connected on a connection line between the interphone master unit 2 and the wired extended master unit 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an interphone system including a wireless extension master unit that communicates wirelessly with a door phone slave unit, an interphone master unit, and a wired extension master unit via a wireless adapter.

  Some conventional intercom systems include a wireless extension base unit in addition to a wired extension base unit connected to the interphone base unit by wire. As a system including a wireless extension base unit, a system including a wireless adapter is known in order to communicate with a door phone slave unit or an interphone base unit.

  5 and 6 are examples of an intercom system provided with this type of wireless adapter. FIG. 5 shows a system described in Patent Document 1 and FIG. 6 shows a system described in Patent Document 2.

  The system shown in FIG. 5 is a hands-free intercom system in which a door phone with a camera 101 and an interphone base unit with a monitor 102 are connected by a signal line L, and a wireless extension base unit with a monitor 104 and a wireless adapter 103 are provided. It is. In addition, 103n and 104n in the figure indicate antennas of the wireless adapter 103 and the wireless extension base unit 104 with a monitor, respectively.

  The interphone master unit with a monitor 102 connected by wire to the doorphone slave unit with camera 101 includes an audio output terminal 102b for outputting the audio signal and video signal transmitted from the doorphone slave unit with camera 101 to the wireless adapter, and the doorphone slave unit. 101 includes a video output terminal 102c that transmits a video signal transmitted from the camera 101, an audio input terminal 102a that inputs an audio signal from the wireless adapter 103, and a control terminal 102d that exchanges control signals with the wireless adapter 103. ing.

  The wireless adapter 103 includes an audio input terminal 103b connected to the audio output terminal 102b of the monitor interphone master unit 102, a video input terminal 103c connected to the video output terminal 102c of the monitor interphone master unit 102, and an interphone parent with monitor. A control terminal 103d connected to the control terminal 102d of the machine 102, and an audio output terminal 103a connected to the audio input terminal 102a of the interphone master unit 102 with a monitor.

  The wireless adapter 103 wirelessly transmits the audio signal, the video signal, and the control signal input from the intercom base unit 102 side to the wireless extension base unit 104 with a monitor, and the audio signal wirelessly transmitted from the wireless extension base unit 104 with a monitor. And the control signal are output to the audio output terminal 103a and the control terminal 103d, respectively.

  The monitor-added wireless extension base unit 104 receives the audio signal and the video signal wirelessly transmitted from the wireless adapter 103, wirelessly transmits the audio signal to the wireless adapter 103, and the operation of the wireless extension base unit 104 is performed by these operations. On the side, in response to the call of the door phone slave unit 101, a call can be made for a predetermined time while watching the video of the visitor.

  In the system of FIG. 6, the intercom master unit 202 and the door phone slave unit 201 are connected to each other by a signal line L, and a wireless adapter 203 is connected between them by the signal line L. And at least one possible wireless extension base unit 204. The wireless adapter 203 wirelessly transmits a call signal from the doorphone slave unit 201 to the wireless extension master unit 204, and transmits / receives a call signal to / from the wireless extension master unit 204, thereby calling and answering calls from the doorphone slave unit 201. Is going.

In the figure, reference numerals 203n and 204n denote antennas of the wireless adapter 203 and the wireless extension base unit 204, respectively.
JP 2004-147215 A JP 2000-224316 A

  However, in the system of FIG. 5 described above, when configuring an interphone system in which a wired extension base unit and a wireless extension base unit are added, in addition to the connection terminal for connecting the wired extension base unit to the interphone base unit, Since it is necessary to provide a dedicated terminal for connecting the wireless adapter, there is a problem in that the cost of the interphone base unit increases and the size of the interphone base unit increases.

  Further, in the system of FIG. 6 described above, since the wireless adapter is connected to the signal line between the door phone slave unit and the interphone master unit, the wireless unit is located far from the entrance, for example, the third floor room of a three-story house. However, there are problems that the wiring distance becomes long and the wiring form becomes complicated, and that the place where the wireless unit is installed is restricted.

  The present invention has been proposed in view of the above points, and an object of the present invention is to provide an inexpensive interphone system in which a wireless extension base unit and a wired extension base unit can be incorporated by a simple method. .

  In order to achieve the above object, an interphone system according to claim 1 includes an interphone base unit, a door phone slave unit that communicates with the interphone base unit, a wireless adapter that is wired to the interphone base unit, and an interphone base unit or door phone. In a wireless intercom system that includes a wireless extension base unit that performs wireless communication with a slave unit via a wireless adapter, and a wired extension base unit that is wired to the interphone base unit, the wireless adapter is a door phone slave unit. It is characterized in that it is not directly connected, but is wired on the connection line between the interphone master and the additional cable master.

  According to a second aspect of the present invention, the wireless adapter is configured to be further connected via a signal line to the final wired extension master connected via the signal line to the interphone master.

  According to claim 3, the wireless extension base unit performs wireless communication through the wireless adapter and the intercom base unit for the response to the call from the door phone slave unit, the call with the door phone slave unit, and the video monitor through the door phone slave unit. It is characterized by.

  According to a fourth aspect of the present invention, the wireless extension base unit performs wireless communication for an extension call, an extension call response, and an extension call to the interphone base unit or the wired extension base unit via a wireless adapter. .

  In claim 5, a plurality of wireless extension base units are arranged, and each of the plurality of wireless extension base units performs wireless communication for extension call, extension call response, and extension call via a wireless adapter. It is characterized by.

  According to a sixth aspect of the present invention, wireless communication between a plurality of wireless extension base units is further performed via the interphone base unit.

  According to the intercom system according to any one of claims 1 to 6, it is possible to realize an intercom system capable of constructing a wired system as a wireless-compatible system by adding wireless extension master units to the cable extension master units and adding them simply.

  Specifically, according to the first aspect, since the wireless adapter is connected to the signal line of the transition wiring between the interphone master unit and the wired extension master unit, the wireless adapter is applied to the interphone system including the wired extension master unit. In this case, it is not necessary to add a dedicated terminal for connecting the wireless adapter to the interphone master unit separately from the terminal for connecting the wired extension master unit, and the cost and size of the master unit can be reduced.

  In addition, since the wireless adapter is connected to the door phone slave unit via the interphone master unit, even when the wireless adapter is installed in a place far from the entrance, such as a three-story room of a three-story house, the wiring distance is It is possible to prevent a long distance and complicated wiring form, and to provide an intercom system that does not restrict the installation location of the wireless adapter.

  According to the second aspect of the present invention, since the wireless adapter is further connected by the signal line to the final wired extension master connected by the signal line to the interphone master, it is not necessary to provide a plurality of terminals. It is possible to reduce the cost and size of the adapter.

  According to the third aspect of the present invention, it is possible to provide a highly convenient intercom system capable of realizing wireless communication between the door phone slave unit and the wireless extension base unit.

  According to the fourth aspect of the present invention, it is possible to provide a highly convenient interphone system capable of realizing wireless communication between the interphone master unit or the wired extension master unit and the wireless extension master unit.

  According to the fifth aspect, communication between a plurality of wireless extension base units can be performed only by the wireless adapter without using the interphone base unit. Therefore, the processing load of the interphone base unit can be suppressed.

  According to the sixth aspect of the present invention, since communication between a plurality of wireless extension base units is further performed via the interphone base unit, the processing load of the wireless adapter can be suppressed.

  Hereinafter, two embodiments of the present invention will be described with reference to the accompanying drawings.

  In both the first and second embodiments, the interphone master unit, the wired extension master unit, and the wireless extension master unit in the room can be applied to a system using any handset or hands-free interphone.

  In the embodiment, a television interphone system is shown in which a video captured by a camera of a door phone slave unit is monitored on the parent device side. However, it is needless to say that the present invention can also be applied to an interphone capable of only voice calls.

  FIG. 1 is a block diagram showing a configuration of an intercom system according to the present invention. FIG. 2 is a circuit block diagram showing each component of the devices constituting the intercom system shown in FIG.

  The interphone system shown in FIG. 1 and FIG. 2 includes an interphone master unit 2, a doorphone slave unit 1 wired to the interphone master unit 2, a wired extension master unit 4, and an interphone master unit 2 or a wired extension master unit 4. A wireless adapter 3 having two connection terminals 3ta and 3tb for wired connection to a wireless extension base unit 5 and a wireless extension base unit 5.

  Here, the wireless adapter 3 is mixed with the wired extension base units 4 and 4 on the two-wire signal line L provided for the interphone base unit 2 to install the plurality of wired extension base units 4 and 4. Then, they are arranged in the form of being connected by a crossover wiring.

  As will be described later, the signal line L is transmitted based on the camera power source, with control signals, audio signals, and video signals that are divided into frequency bands being superimposed on each other by a frequency multiplexing method. A coaxial cable for transmitting a video signal, a control signal, an audio signal, a signal line for transmitting power, and a power line connected to each other may be used.

  Next, the configuration and operation of each device constituting the system will be described.

  The doorphone sub unit 1 includes a speaker 1b, a microphone 1d, a speaker amplifier 1c, a microphone amplifier 1e, a camera 1f that captures the appearance of a visitor, a call button 1g, and a signal processing unit 1a.

  The audio signal output from the microphone 1d and amplified by the microphone amplifier 1e, the video signal output from the camera 1f, and the control signal generated by the operation of the call button 1g are multiplexed by the signal processing unit 1a, and the transmission path (Signal line L). The interphone base unit 2 sends audio signals and control signals to the transmission line together with the power source, and the signal processing unit 1a separates the multiplexed signals sent from the interphone base unit 2. The separated audio signal is amplified by the speaker amplifier 1c and then output from the speaker 1b.

  The intercom base unit 2 includes a speaker 2b, a microphone 2d, a speaker amplifier 2c, a microphone amplifier 2e, a monitor 2f, an operation button 2g, an extension call button 2h, and a signal processing unit 2a.

  The multiplexed signal transmitted from the intercom 1 is separated into an audio signal, a video signal, and a control signal by the signal processing unit 2a, and the audio signal is amplified by the speaker amplifier 2c and then output to the speaker 2b. Then, the video signal is output to the monitor 2f. The audio signal output from the microphone 2d is amplified by the microphone amplifier 2e, and then multiplexed with the control signal generated by the operation of the operation button 2g and the signal processing unit 2a, and is superimposed on the power source to be transmitted to the transmission line. Sent out.

  Further, when the doorphone slave unit 1 and the wireless extension master unit 5 communicate with each other, the interphone master unit 2 outputs a signal sent from the doorphone slave unit 1 to the wireless adapter 3 from the signal processing unit 2a. 3 has a function of sending the signal sent out by the signal processing unit 2a to the door phone slave unit 1. When the interphone base unit 2 and the wireless extension base unit 5 communicate, the audio signal and control signal output from the microphone 2d are processed by the signal processing unit 2a, and then output to the wireless adapter 3, and the wireless adapter 3 The signal processing unit 2a processes the signal sent out by, and then outputs the signal to the speaker 2b via the speaker amplifier 2c.

  The wireless adapter 3 has two connection terminals 3ta and 3tb, a signal processing unit 3a, a wireless unit 3r, and an antenna 3n associated with the wireless unit 3r, and an audio signal and video sent from the interphone master unit 2 Signals and control signals are processed by the signal processing unit 3a, then modulated by the radio unit 3r and transmitted from the antenna 3n. The audio signal and control signal transmitted from the wireless extension base unit 5 are received by the antenna 3n, demodulated by the wireless unit 3r, and then transmitted to the interphone base unit 2 via the signal processing unit 3a.

  The wireless extension base unit 5 includes a speaker 5b, a microphone 5d, a speaker amplifier 5c, a microphone amplifier 5e, a monitor 5f, an operation button 5g, an extension call button 5h, a signal processing unit 5a, a wireless unit 5r, An antenna 5n associated with the wireless unit 5r is provided. During a call, an audio signal, a video signal, and a control signal transmitted from the wireless adapter 3 are received by the antenna 5n, demodulated by the wireless unit 5r, and a signal processing unit 5a. After the processing, the audio signal is output to the speaker 5b and the video signal is output to the monitor 5f. Further, the audio signal and control signal output from the microphone 5d are processed by the signal processing unit 5a, and then modulated by the radio unit 5r and transmitted from the antenna 5n.

  The wired extension base unit 4 includes a speaker 4b, a microphone 4d, a speaker amplifier 4c, a microphone amplifier 4e, a monitor 4f, an operation button 4g, an extension call button 4h, and a signal processing unit 4a.

  In the wired extension base unit 4, the multiplexed signal transmitted from the interphone base unit 2 is separated into an audio signal, a video signal, and a control signal by the signal processing unit 4a, and the audio signal is amplified by the speaker amplifier 4c. After that, it is output to the speaker 4b and the video signal is output to the monitor 4f. The audio signal output from the microphone 4d is amplified by the microphone amplifier 4d, multiplexed with the control signal generated by the operation of the operation button 4g and the signal processing unit 4a, and superimposed on the power supply and sent to the transmission line. Is done.

  Next, the basic operation of the interphone system will be described by dividing it into a call from the visitor's doorphone slave unit 1 and an extension call between the master units 2, 4 and 5.

  First, a call from the doorphone slave unit 1, a response, a call, and a monitor associated therewith will be described.

  When the interphone master unit 2 is called from the doorphone slave unit 1, a ringing tone is output from the interphone master unit 2, the wired extension device 4, and the wireless extension device 5. When responding with either of them, the intercom base unit 2 connects the responding device and the door phone slave unit 1 to enable a call.

  More specifically, when a visitor operates the call button 1g of the door phone slave unit 1 to make a call, the interphone master unit 2 detects that the standby voltage is lowered. When the call signal is detected by the interphone master unit 2, the interphone master unit 2 notifies the wired extension master unit 4 and the wireless adapter 3, and is further transmitted to the wireless extension master unit 5 by a radio signal from the wireless adapter 3. The

  Thereafter, for example, when the wireless extension base unit 5 responds, the wireless extension base unit 5 receives a signal in which the audio and video on the side of the doorphone slave unit 1 are multiplexed via the wireless adapter 3 as a wireless signal. The sound of the doorphone slave unit 1 is output to the speaker 5b of the wireless extension base unit 5, the video of the doorphone slave unit 1 is output to the monitor 5f of the wireless extension base unit 5, and the telephone conversation with the doorphone slave unit 1 is performed. Can do.

  If the interphone master unit 2, the wired extension master unit 4, or the wireless extension master unit 5 responds to the call from the door phone slave unit 1, the interphone master unit 2 is Then, only the responding device is connected to the doorphone sub unit 1 to allow a call for a predetermined time. If the call ends within a predetermined time, the connection is cut off at that time, and the original standby state is restored.

  In addition, in order to cause the master unit to ring all at once for the call from the doorphone slave unit 1, the call from the speaker 2b of the interphone master unit 2 is performed at the same time as the notification delay to the wireless extension master unit 5. You may make it ring with a delay. Further, in the case of a television interphone, considering the delay in the transmission of the camera video, the wireless extension base unit 5 is made to ring simultaneously after receiving the video signal.

  Next, an extension call between the master units, a response and a call associated therewith will be described.

  For example, in the case of an extension call from the intercom base unit 2 to the wireless extension base unit 5, the following operation is executed.

  When the resident operates the extension call button 2h of the interphone master unit 2 to make an extension call, the extension call signal is sent through the wireless adapter 3 to the call extension wireless extension master unit 5 to receive the call. When the wireless extension base unit 5 responds, a call between the interphone base unit 2 and the called wireless extension base unit 5 is started via the wireless adapter 3.

  In the case of an extension call from the wired extension base unit 4 to another wired extension base unit 4 or wireless extension base unit 5, the intercom base unit 2 once accepts the extension call signal. When the call destination is the wired extension base unit 4, the interphone base unit 2 sends a call signal to the wired extension base unit 4. When the call destination is the wireless extension base unit 5, the interphone base unit 2 passes through the wireless adapter 3. Then, a call signal is sent to the wireless extension base unit 5. When the device that has received the call responds, the intercom base unit 2 starts a call by connecting only the caller and the callee.

  Note that a signal may be sent directly to a call destination without going through the intercom base unit 2. In that case, the caller or callee sends a signal during the extension call to the interphone master unit 2.

  There are two types of extension calls: a general call that calls all other parent devices with one call button, and an individual call that calls a specific parent device with individual call buttons.

  In a simultaneous call from the interphone master unit 2, the interphone master unit 2 sends a simultaneous call signal to the wireless extension master unit 5 via the wired extension master unit 4 and the wireless adapter 3. On the other hand, if any of the wired extension base unit 4 and the wireless extension base unit 5 responds, a call is performed between the device and the intercom base unit 2. In the case of having a secret function, the connection with the parent machine that has not responded is blocked.

  In the case of an individual call, the intercom base unit 2 receives an address designating a call destination from the call source base unit, sends a call signal designating the call destination address, and calls the other party.

  As described above, since the wireless adapter 3 is connected to the signal line L of the crossover wiring between the intercom base unit 2 and the wired extension base unit 4, a terminal for connecting the wired extension base unit 4. Apart from this, it is not necessary to add a dedicated terminal for connecting the wireless adapter 3 to the intercom base unit 2, and the cost and size of the base unit can be reduced.

  In addition, since the wireless adapter 3 is not directly connected to the door phone slave unit 1, even when the wireless adapter 3 is installed in a place far from the entrance, such as a three-story room of a three-story house, the wiring distance is reduced. An intercom system can be provided in which the increase in distance and the complexity of the wiring form can be prevented, and the installation location of the wireless adapter 3 is not restricted.

  In the example of FIG. 1, the wireless adapter 3 is arranged on the signal line L between the wired extension base units 4 and 4. However, since the signal line L is used as a crossover wiring, the wireless adapter 3 is connected to the interphone. It can be connected to an arbitrary position on the signal line L between the parent device 2 and the wired additional parent device 4. For example, as shown in FIG. 3, the wireless adapter 3 may be arranged so as to be located at the terminal end on the signal line L.

  3 are the same as those of the system shown in FIG. 1, and therefore, the same reference numerals are assigned to the components and description thereof is omitted.

  Next, an intercom system provided with a plurality of wireless extension base units will be described.

  FIG. 4 is a block diagram illustrating a configuration example of an intercom system including a plurality of wireless extension base units.

  As shown in FIG. 4, the interphone system of the present embodiment includes an interphone master unit 2, a doorphone slave unit 1 wired to the interphone master unit 2, a wired extension master unit 4, an interphone master unit 2 or a wired extension unit. A wireless adapter 3 having two connection terminals 3ta and 3tb for wired connection to the parent device 4, and a plurality of wireless extension parent devices 5 (# 1), 5 (# 2),..., 5 (#n) And the terminator 6. Here, the wireless adapter 3 is mixed with the wired extension master units 4 and 4 on the two-wire signal line L provided for the interphone master unit 2 to connect the plurality of wired extension master units 4 and 4. Then, they are arranged in the form of being connected by a crossover wiring.

  The wireless adapter 3 may be connected to a position formed at the end of the signal line L provided for the interphone base unit 2 to connect a plurality of wired additional base units 4.

  Since the components of each device constituting the system of the present embodiment are the same as those in FIGS. 1 and 3, the description thereof is omitted here.

  Next, the basic operations of extension call, response, and call between the wireless extension base units 5 of the interphone system will be described. For example, a case will be described in which the wireless extension master unit 5 (# 1) and the wireless extension master unit 5 (# 2) call each other by extension.

  When the resident operates the extension call button 5h of the wireless extension base unit 5 (# 1), a wireless signal indicating the extension call is transmitted to the wireless adapter 3. Thereafter, the wireless adapter 3 transmits the extension call signal to the wireless extension base unit 5 (# 2) in the form of a wireless signal based on its own determination. In this case, a signal during an extension call is sent to the intercom base unit 2. The wireless extension base unit 5 (# 2) receives the voice signal from the wireless extension base unit 5 (# 1) via the wireless adapter 3 as a wireless signal, and as a result, a call can be made with the called party. .

  In such a system, communication between a plurality of wireless extension base units can be performed only by the wireless adapter without using the interphone base unit, and therefore the load on the interphone base unit can be suppressed.

  Of course, the extension call between the wireless extension masters 5 and 5 may be arranged such that the interphone master unit 2 distributes the extension call through the interphone master unit 2. In such a system, the wireless adapter The configuration of 3 can be simplified.

It is a block diagram which shows the structure of the intercom system of this invention. It is the block diagram which showed the internal structure of the apparatus which comprises the intercom system of this invention. It is a block diagram which shows the other example of the intercom system of this invention. It is a block diagram which shows the other example of the intercom system of this invention. It is a block diagram which shows the conventional intercom system. It is a block diagram which shows the conventional intercom system.

Explanation of symbols

1 Door phone slave unit 2 Interphone master unit 3 Wireless adapter 4 Wired extension master unit 5 Wireless extension master unit L Signal line

Claims (6)

Interphone main unit,
A doorphone slave unit that communicates with the interphone master unit,
A wireless adapter for wired connection to the intercom base unit;
A wireless extension base unit that performs wireless communication with the interphone base unit or door phone slave unit via a wireless adapter;
In a wireless intercom system equipped with a wired additional base unit that is wired to the interphone base unit,
An intercom system characterized in that the wireless adapter is not directly connected to the door phone slave unit, but is connected to the connection line between the interphone master unit and the wired extension master unit. In claim 1,
The interphone system, wherein the wireless adapter is configured to be further connected via a signal line to a final wired extension master connected via a signal line to the interphone master. In any one of Claims 1, 2.
The wireless extension base unit performs wireless communication through the wireless adapter and the intercom base unit for response to a call from the door phone slave unit, communication with the door phone slave unit, and video monitoring through the door phone slave unit. Characteristic intercom system. In any one of Claims 1, 2.
The wireless extension base unit performs wireless communication for extension call, extension call response, and extension call to the intercom base unit or the wired extension base unit via the wireless adapter. Intercom system. In any one of Claims 1, 2.
Multiple wireless extension master units are arranged,
The intercom system, wherein each of the plurality of wireless extension base units performs wireless communication for extension call, extension call response, and extension call via the wireless adapter. In claim 5,
The intercom system, wherein the wireless communication between the plurality of wireless extension base units is further performed via the interphone base unit.

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