JP3879731B2 - Intercom system - Google Patents

Description

  The present invention relates to an intercom system having a configuration in which a cordless remote controller is combined with a doorphone slave unit and an interphone master unit, and control is performed by outputting a cordless signal from the cordless remote controller.

Recently, an intercom system as shown in Patent Document 1 below has been proposed. This unit is composed of at least a combination of interphone master unit and door phone slave unit. In response to a call from the door phone slave unit, the interphone master unit makes a response call with the interphone master unit, and the interphone master unit sets the camera of the door phone slave unit. The camera image can be monitored by driving.
JP 2000-224317 A

By the way, in the above-described conventional system, all the operation buttons of the interphone master unit are installed on the main unit of the interphone master unit, and are installed at a position where the user can comfortably operate while standing up. For people, children, people with weak legs, etc., the operation buttons are at a high position, which makes it difficult to operate.
  Some of the operation buttons, such as an electric lock / unlock button and an extension call button, do not need to be used by all users, but these operation buttons are also provided on the main body of the interphone main unit. However, although these operation buttons were hidden with a cover, the operability was poor.
  The present invention has been made in view of the above circumstances, and an object thereof is to provide an intercom system that allows any person to handle a smooth visitor.

In order to achieve the above object, in claim 1, the interphone master unit is provided with a cordless signal receiving unit and is installed on a wall surface, the cordless remote controller is provided with a cordless signal transmitting unit, and the interphone master unit has an interphone sub-master. When the machine is connected and a cordless signal is received from the cordless remote controller, the interphone master unit outputs a control signal, and the interphone sub-master unit is connected to the interphone master unit or until the preset delay time elapses. When the control signal from the interphone master unit or another interphone sub-master unit is detected during the period until the delay time elapses, the control signal from the other interphone sub-master unit is monitored. The configuration is such that a control signal of the same type as the detected control signal is not output.
Here, the door phone slave unit and the interphone master unit are not necessarily limited to those connected by a transmission line.

  In claim 2, the interphone base unit is provided with a cordless signal receiving unit and installed on a wall surface, the cordless remote control is provided with a cordless signal transmission unit, the interphone base unit is connected with an interphone sub-base unit, and the cordless remote control is connected with the cordless signal. The interphone master unit sends a confirmation signal to the interphone sub-master unit, while the interphone sub-master unit constantly monitors the control signal input to itself and receives the confirmation signal. Previously, when a control signal from an interphone master unit or another interphone sub-master unit is detected, a control signal of the same type as the detected control signal is not output.

According to a third aspect of the present invention, the cordless remote control includes an operation button for executing an extended function other than the call function.

According to Claims 1 and 2, since the interphone master unit is provided with a cordless signal receiving unit and is installed on a wall surface, and the cordless remote control is provided with a cordless signal transmitting unit, a wheelchair, a child, a weak leg, An intercom system can be provided so that even people who are difficult to reach high places, such as the elderly, can easily respond to intercom calls, etc., and everyone can respond smoothly.
  According to the first and second aspects, even when the interphone master unit and the interphone sub-master unit simultaneously receive a cordless signal output from the cordless remote controller, it is possible to prevent a plurality of control signals from colliding with each other.

According to the third aspect of the present invention, since the cordless remote controller includes an operation button for executing the extended function, the cordless remote controller is not frequently used like an electric lock / unlock button or an extension call button. By providing the operation buttons on the cordless remote controller side, it is possible to eliminate the need for many buttons on the intercom body and to clean the appearance. Further, it is not necessary to improve the aesthetic appearance by hiding the button with the cover, and operability can be ensured.

  Embodiments of the present invention will be described below.

FIG. 1 is a diagram showing an example of a schematic configuration of the system of the present invention.
In this device, an interphone master unit 1 and a camera-equipped doorphone slave unit 2 are connected through a transmission line L. Further, a cordless remote controller 3 that outputs and controls a cordless signal to the interphone master unit 1 is combined.

  A cordless signal receiving unit (see FIG. 3) is provided below the intercom base unit 1 to receive a cordless signal output from the cordless signal transmitting unit 30 at the top of the remote control 3. As the cordless signal, for example, an infrared signal or a radio signal can be used.

  The intercom base unit 1 and the remote control 3 are attached as shown in FIG. That is, the intercom base unit 1 is installed on the wall surface W, and the remote controller 3 that controls the interphone base unit 1 is provided on the wall surface W as in the base unit 1, but is provided on the wall surface W at a position lower than the base unit 1.

In the case of FIG. 2, the intercom base unit 1 is at a position 1400 mm from the floor surface F, and the remote control is at a position 1000 mm lower than that. As a result, operability can be secured even for a person who cannot easily reach a high place such as a person with a wheelchair as shown, a child, a person with a weak leg, or a person with a disability.
Further, since the remote controller 3 is directly below the interphone master unit 1 and is output from the upper part of the remote controller 3 to the lower surface of the interphone master unit 1, the cordless signal from the remote controller 3 is output to the interphone master unit 1 without any obstacles due to obstacles. Can.

Further, even if the necessity arises after the interphone master unit 1 is installed, it can be easily handled by simply installing the remote controller 3, and the height at which the remote controller 3 is installed can be freely set according to the situation. , Can be highly convenient.
Furthermore, such a remote control 3 can be removed from the wall surface W and carried by the user. For example, if the remote controller 3 is attached to the wall surface W by a magnetic force attracting each other by installing a magnet on each of the wall surface W and the remote controller 3, it is usually provided on the wall surface W and can be removed from the wall surface W at any time. It is difficult to lose the remote control 3, and it is easy to find the remote control 3 when a response such as a visitor response is necessary, and the operability is excellent.

FIG. 3 is a diagram illustrating an example of an external configuration of the intercom base unit 1 described above.
Here, the front surface, top surface, bottom surface, left side surface, and right side surface of the intercom base unit 1 are shown. On the front side, a monitor TV M, a speaker SP, and a call / monitor button B1 are provided. A microphone MI and a cordless signal receiving unit 10 are provided on the lower surface. The left side surface includes a power switch SW1 and a brightness adjustment switch SW2 for adjusting the brightness of the monitor television M. On the right side, a ring volume control switch SW3 is provided.

The intercom base unit 1 and the remote controller 3 have an internal configuration as shown in FIG.
The intercom base unit 1 includes a cordless signal receiving block 11 including a cordless signal receiving unit 10, a speaker SP, and a microphone MI, and a voice circuit for making a call through the transmission line L with the doorphone slave unit 2. A block 12, a monitor TV M for displaying video captured by the doorphone slave unit 2, and a CPU 13 that performs overall control thereof are provided.

  When the CPU 13 receives the cordless signal from the remote controller 3, the CPU 13 confirms the content of the control data, and performs the process of the control type defined by the confirmed control data. For example, if it is response control data for a call from the doorphone slave unit 2, a call path with the doorphone slave unit 2 is formed by the call circuit block 12, and a call state with the doorphone slave unit 2 is established.

  One remote controller 3 includes a cordless signal transmission block 31 including a cordless signal output unit 30, a CPU 32 for controlling the block, and an operation button B for outputting a cordless signal. Note that the operation button B can be provided for each control type for the base unit 1. For example, a call button for making a call in response to a call from the door phone slave unit 2, a monitor button for driving the camera of the door phone slave unit 2 to monitor its image, and an electrical connection connected to the master unit 1 There is an electric lock / unlock button for locking / unlocking a lock (not shown). When the CPU 32 detects each button operation, the cordless signal transmission unit 30 outputs a cordless signal including control data that differs depending on the control type. .

  In such a configuration, the processing at the time of a call response operation from the doorphone slave unit 2 in the remote controller 3 will be described with reference to the flowchart of FIG. That is, when the door phone slave unit 2 is operated and a call control signal is sent from the slave unit 2 to the master unit 1, a ring tone is output from the master unit 1 (100). At this time, a camera drive control signal is sent from the master unit 1 to the slave unit 2, and an image taken by the camera of the slave unit 2 is displayed on the monitor television M (101).

  When the user operates the remote controller 3 (in this case, operates the call button), the remote controller 3 outputs a response call control signal as a cordless signal. A communication path with the child unit 2 is formed and a call state is established (103).

  On the other hand, when the remote controller 3 is not operated even after a predetermined time (30 seconds in this case) has elapsed since the call was started (102, 104), the output of the ringing tone is stopped and the display of the camera video is also stopped.

FIG. 6 is a diagram showing another example of the schematic configuration of the system of the present invention.
In this system, a plurality of door phone slave units 2 are connected to the master unit 1. These sub units 2 are mainly used in homes having a plurality of entrances. For example, the sub unit 2 (# 1) is a main entrance, the sub unit 2 (# 2) is a free entrance, and the sub unit 2 (# # 3) is installed at the sub entrance.

  In addition, a plurality of secondary master units 4 are connected to the master unit 1, and these secondary master units 4 are mainly used in homes having a plurality of rooms. The master unit 4 (# 1) is installed in the child room, and the secondary master unit 4 (2) is installed in the bedroom.

  The secondary master unit 4 is installed on the wall surface in the same manner as the master unit 1 and is provided with a cordless signal receiver at the lower part thereof so as to receive a cordless signal from the remote controller 3.

The remote control 3 has an extension having a call button B2, a monitor button B3, an electric lock / unlock button B4, a general call button B5, a master call button B61, a sub master 1 call button B62, and a sub master 2 call button B63. And an individual call button B6.
No operation buttons other than the call button B2, the monitor button B3, the general call button B5, and the extension individual call button B6 are provided on the main unit 1 and the sub-main unit 2 main body. Only basic functions are provided as operation buttons.
Thereby, the external appearance of the main body of the main unit 1 and the sub-main unit 2 can be refreshed. On the other hand, the remote controller 3 is provided with operation buttons B4 and B6 for executing the extended functions other than the above-described calling, answering, and calling, so where the operation buttons B4 and B6 are attached at first glance. Thus, the problem of not knowing where the button is, as when covered with a conventional cover, can be solved, and operability and visibility can be improved.

  When these buttons are operated, control is performed by the CPU 32 of the remote controller 3 so that cordless signals of different control types are output. The call button B2 is operated when calling from the handset 2, and a call response control signal is output as a cordless signal.

The monitor button B3 is for driving the camera of the slave unit 2 and monitoring the video, and when this is operated, a monitoring control signal is output.
The electric lock locking / unlocking button B4 is for locking / unlocking an electric lock (not shown) connected to the base unit 1, and when this is operated, a locking / unlocking control signal is output.
The general call button B5 is used to call all the master unit 1 and the sub master unit 2 other than the master unit 1 and the sub master unit 2 that are the output destinations of the cordless signal. Is output.

The extension individual call button B6 is for individually specifying and calling the other master unit 1 and the sub master unit 2. When the button B61 is operated, a control signal for calling the master unit is output, and when the button B62 is operated, the sub unit is called the sub unit. A control signal for calling the master unit 4 (# 1) is output, and when the button B63 is operated, a control signal for calling the sub master unit 4 (# 2) is output.

Next, the basic operation of the system having such a configuration will be described below.
When a cordless signal is transmitted from the remote controller 3, the master unit 1 and the sub master unit 4 determine the control type from the received cordless signal.
For example, when the secondary master unit 4 (# 1) is the source of the cordless signal and outputs a cordless signal for calling the extension and calls the secondary master unit 4 (# 2), the secondary master unit 4 (# 1) sends an extension call control signal to the secondary master unit 4 (# 2) to call the secondary master unit 2 (# 2).
If the secondary master unit 2 (# 2) that received the call becomes a reception source and receives a cordless signal for response from the remote controller 3, the secondary master unit 2 (# 2) will receive the secondary master unit 2 (# 1). To form a communication path.
The above processing shows the case where the secondary master unit 4 side has the control processing capability, but only the master unit 1 may have the control processing capability. This will be described.
In this case, when the secondary master unit 4 (# 1) becomes the source of the cordless signal and calls the secondary master unit 4 (# 2), the secondary master unit 4 (# 1) An extension call control signal designating the parent device 4 (# 2) is sent, and this is received by the parent device 1, and the parent device 1 calls the sub-master device 2 (# 2).

  If the secondary master unit 2 (# 2) that has received the call receives the cordless signal from the remote controller 3 by operating the call button as the receiver, the secondary master unit 2 (# 2) sends a response control signal to the master unit 1 The master unit 1 that has received the message and forms a communication path between the sub master unit (# 1) and the sub master unit 2 (# 2).

FIG. 7 is a diagram showing another example of the internal configuration of the intercom base unit 1.
In addition to the cordless signal receiving block 11, the audio circuit block 12, the monitor TV M, and the CPU 13 (all of which are described above), the master unit 1 includes a relay 14 for switching the connection with the slave unit 2 (# 1 to # 3). Yes.
Here, the relay 14 controls the connection of the transmission line L between the slave unit 2 and the master unit 1 and the secondary master unit 4, and is switched by the CPU 13 at the time of calling, answering call, monitoring, etc. Is done.

  One sub-master 4 has an internal configuration as shown in FIG. 8 and includes a cordless signal reception block 40, an audio circuit block 41, a monitor television M, and a CPU 42.

In such a configuration, the system performs the following characteristic processing. This will be described with reference to FIGS.
That is, in the system of FIG. 6, when using a plurality of remote controllers corresponding to the master unit 1 and the sub master unit 4 in the system, and even if there is only one remote controller 3, a plurality of master units 1 and sub units When the base unit 4 is approaching, the base unit 1 and the secondary base unit 4 may receive a cordless signal at the same time.

  In such a case, a plurality of control signals of the same type may flow on the transmission line L and may collide with each other. For example, when there are a plurality of remote controllers 3, an extension call control signal from the secondary master unit 4 (# 1) to the secondary master unit 4 (# 2), and the secondary master unit 4 (# 2) to the secondary master unit 4 The extension call control signal to (# 1) may collide on the transmission line L.

Further, even if there is only one remote controller 3, when a plurality of master units 1 and sub-master units 4 simultaneously receive cordless signals, for example, in the case of an extension call to sub-master unit 4 (# 2), The extension call control signal from the machine 4 (# 1) to the secondary master machine 4 (# 2) and the extension call control signal from the master machine 1 to the secondary master machine 4 (# 2) collide on the transmission line L. There is a fear.
Therefore, in the present invention, the following technique is taken to solve this problem.

In the system proposed in claim 4, when the cordless signal from the remote controller 3 is received, the master unit 1 and the sub master unit 4 can output control signals to the other master unit 1 or the sub master unit 4. However, each of the secondary master units 4 has a self-determination delay transmission function, unlike the master unit 1.
Therefore, when a cordless signal is received from the remote controller 3, a control signal is not output immediately, but a delay time is provided so that the control signal can be output with a delay from the output timing of the control signal of the master unit 1.

  In this self-discriminating delay transmission function, when each sub-master unit 4 receives a cordless signal from the remote controller 3, it monitors the transmission line L until the set delay time elapses. If a control signal of the same type as the control signal to be output from the master unit 1 or another sub-master unit 4 is detected before the delay time elapses, the control signal is transmitted even if the delay time elapses. Only when no control signal of the same type as the control signal to be output is detected before the delay time elapses, a control signal is output when the delay time elapses. ing.

  This will be described in more detail with reference to FIG. That is, here, the delay time is set longer in the order of the master unit 1, the sub master unit 4 (# 1), and the sub master unit 4 (# 2). Under this condition, the master unit 1, the sub master unit 4 can output a control signal to both the master unit 1 and the sub-master unit 4 when the cordless signal is received at the same time. However, since the master unit 1 has a delay time of “0”, it is immediately controlled. Output a signal.

  On the other hand, the sub-master units 4 (# 1) and 4 (# 2) can output a control signal when a delay time set for each of the sub-master units 4 (# 1) and 4 (# 2) elapses. It is determined whether or not a control signal is detected on the transmission line L from the device 1 or the sub master device 4.

  If a control signal is input during the set delay time, if the control signal to be output by the secondary master unit 4 is the same type as the detected control signal, the secondary master unit 4 controls the control signal. Only when the control signal of the same type as the control signal to be output is not detected during the delay time without outputting the signal, the control signal is output from itself.

  By performing such processing, even when the master unit 1 and the sub master unit 4 simultaneously receive a cordless signal from the remote controller 3, the same type of control signal is simultaneously received from the master unit and the sub master unit 4 that have received the cordless signal. It is possible to prevent a plurality of similar control signals from colliding on the transmission line L without being output.

  This is shown in the flowchart in FIG.

  That is, when the secondary master 4 receives a cordless signal from the remote controller 3 (100), the secondary master 4 is turned on after resetting the timer to execute the self-determination delay transmission function (101).

A control signal (same type as the control signal to be output from the sub master unit 4) output from the master unit 1 or another sub master unit 4 is transmitted by the time the timer expires and the delay time elapses. If it is detected on the line L (103), the control signal is not output, but if such a control signal is not received before the time is up, the sub-master 4 receives the cordless signal from the received remote control 3. A control signal necessary for responding to is output (104).
Next, the system of the present invention proposed in claim 5 will be described.

  In this system, an interphone sub-base unit 4 is further connected to the interphone base unit 1 through a transmission line.

That is, the master unit 1 and the secondary master unit 4 can output control signals to the other master unit 1 and the secondary master unit 4 in response to the reception of the cordless signal from the remote controller 3.
Base unit 1 sequentially transmits confirmation signals to sub-base unit 4 in the system, and after receiving the cordless signal from the cordless remote controller, the sub-base unit sends and receives control on transmission line L. The signal is monitored.
In such a system, the sub-master unit receives a control signal from the master unit 1 or another sub-master unit 4 (similar to the control signal to be output by itself) before receiving the confirmation signal designating itself. When a confirmation signal designating itself is received, such a control signal is output on the transmission line L.
This will be described in detail. When the base unit 1 receives a cordless signal from the remote control 3, it immediately outputs a corresponding control signal. However, the sub-base unit 4 does not receive the control signal until it receives a confirmation signal from the base unit 1 to confirm the presence or absence of the control signal. It is configured to not output.

On the other hand, since the master unit 1 periodically outputs confirmation signals sequentially specifying the sub master units 4 (# 1, 2) to the transmission line L, the response return timing of the sub master unit 4 is delayed. In addition, before receiving the confirmation signal designating itself, the secondary master unit 4 transmits the control signal from the other master unit 1 or the secondary master unit 4 (the control signal to be output by itself) on the transmission line L. If the same kind) is detected, such a control signal is not output, and a control signal is output only when it is not.
In FIG. 11, a confirmation signal designating the secondary master unit 4 is sequentially output from the master unit 1 to the secondary master unit 4, whereas the secondary master unit 4 points out its own address. When the confirmation signal is received, an ACK signal is returned.
Here, ACK returned from the sub-master unit 1: “no transmission data” means that a control signal of the same type as the control signal to be output by itself is already received until the self-response is returned. This means a reply signal that is sent back to the base unit 1, and when it sends a control signal, the control signal is output on the transmission line in the form of ACK: transmission data.

  In the present invention, by performing such processing, even when the master unit 1 and the secondary master unit 4 simultaneously receive a cordless signal from the remote controller 3, the same type is simultaneously received from the master unit and the secondary master unit 4 that have received the cordless signal. The plurality of control signals are not output, and the plurality of control signals of the same type can be prevented from colliding on the transmission line L.

  The present invention relates to various intercom systems, such as an intercom system for voice calls only, which are configured by combining at least a door phone slave unit and an interphone master unit, and a cordless remote controller for controlling the master unit by outputting a cordless signal from a remote location. It can be applied to TV intercom systems that can check images of visitors and people in the residence, and hands-free intercom systems that do not have a handset.

The figure which shows an example of schematic basic composition of this invention system The figure for demonstrating the usage example of this invention system The figure which shows an example of an external appearance structure of an intercom main unit The figure which shows an example of an internal structure of an intercom main unit and a sub-main unit The flowchart which shows an example of basic operation as an intercom system of the system of the present invention The figure which shows other examples of schematic structure of this invention system The figure which shows the other example of an internal structure of an intercom main unit The figure which shows an example of an internal structure of an intercom submaster Time chart showing the self-determination delay transmission operation of the secondary master unit Flowchart showing the basic operation of FIG. The figure which shows another basic operation | movement of this invention system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Interphone main unit 2 ... Door phone cordless handset 3 ... Cordless remote control 4 ... Interphone submaster 10, 40 ... Cordless signal receiver 30 ... Cordless signal transmitter B2 ... Operation button B3 ... Monitor button B4 ... Electric lock locking / unlocking button B5 ... Indoor simultaneous call button B6 ... Extension individual call button F ... Floor surface W ... Wall surface

Claims (3)

In an interphone system that combines a door phone slave unit, an interphone master unit, and a cordless remote controller, and the cordless remote controller outputs a cordless signal to the interphone master unit to enable remote control.
  The interphone master unit is provided with a cordless signal receiver and a wall surface.
  The cordless remote control has a cordless signal transmitter,
  When the interphone master unit is connected to the interphone master unit and a cordless signal is received from the cordless remote controller, the interphone master unit outputs a control signal, and the interphone sub master unit has a preset delay. Until the time elapses, the control signal from the interphone master unit or other interphone sub-master unit is monitored,
  When a control signal from the interphone master unit or another interphone sub-master unit is detected before the delay time elapses, a control signal of the same type as the detected control signal is not output after the delay time elapses. Intercom system that is configured. In an interphone system that combines a door phone slave unit, an interphone master unit, and a cordless remote controller, and the cordless remote controller outputs a cordless signal to the interphone master unit to enable remote control.
  The interphone master unit is provided on the wall surface with a cordless signal receiver,
  The cordless remote control has a cordless signal transmitter,
  When an interphone sub-master is connected to the interphone master and a cordless signal is received from the cordless remote controller, the interphone master transmits a confirmation signal to the interphone sub-master while the interphone sub-master The machine constantly monitors the control signal input to itself, and when the control signal from the interphone master unit or another interphone sub-master unit is detected before the confirmation signal is received, the detected control is detected. An intercom system characterized by not outputting the same type of control signal as the signal. In claim 1,
The cordless remote control is an intercom system including an operation button for executing an extended function other than a call function.

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