JP2019068359A - Intercom system - Google Patents

Abstract

To provide an intercom system which can notify a neighborhood when a master unit is removed, and store a visitor image in a place other than the master unit, thereby allowing confirmation of the visitor image even if the master unit is removed.SOLUTION: The intercom system includes: a slave unit 1 including a function of calling a resident and talking and a slave unit camera for imaging a visitor; a master unit 2 including a function of responding to a call from the slave unit 1 and a monitor for displaying a captured image of the slave unit camera. The slave unit CPU 1 causes an alarm sound from the slave unit when detecting disconnection of a transmission line L1 connecting the slave unit 1 and the master unit 2. When the disconnection of transmission line L1 is detected, master unit CPU 28 causes master unit 2 to issue an alarm sound.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an interphone system in which a visitor calls a resident and makes a call, and more particularly to an interphone system in which a handset operated by the visitor has a camera.

  The interphone system equipped with a camera on the child machine operated by the visitor installed at the entrance etc. and displaying a video of the visitor on the parent machine installed in the dwelling unit is effective for crime prevention because it is effective for crime prevention doing. Among the intercom systems provided with such a crime prevention function, there is one provided with an absence mode function for automatically recording the image of the visitor when there is no answer (for example, see Patent Document 1).

Unexamined-Japanese-Patent No. 2006-94020

  Since the parent machine which receives the calling operation by the above-mentioned absence mode function and automatically records the video records and stores the visitor image at the time of absence, it is effective for crime prevention because it records even when the suspicious person carries out the calling operation. However, there is a problem that an intruder, such as a burglar who recognizes this automatic recording function, takes out and brings back or destroys a parent device provided with a video storage unit so that he / she can not be identified from stored video. There were times when the hard recording function was not useful.

  Therefore, in view of such problems, the present invention can notify the neighborhood if the parent machine is removed, and the visitor can be visited even if the parent machine is removed by storing the visitor image in a place other than the parent machine. An object of the present invention is to provide an intercom system capable of confirming an image.

In order to solve the above-mentioned problems, the invention according to claim 1 has a function to call a resident and make a call, and a child machine provided with a slave camera for photographing a visitor, and a response to a call from the slave An intercom system having a master unit having a monitor function for displaying a captured image of a slave camera, and the slave unit detects a break in a transmission line connecting the slave unit and the master unit. The mobile unit disconnection detection unit is characterized in that the slave unit issues an alarm sound when the disconnection is detected.
According to this configuration, when the transmission line disposed between the slave unit and the master unit is disconnected, an alarm sound is issued from the slave unit. Therefore, when an intruder such as a vacant space removes the master unit, the slave unit The alert operation can notify the neighborhood of an abnormal occurrence, which is effective for repelling the suspicious person, and can alert the neighborhood.

In the second aspect of the present invention, in the configuration according to the first aspect, the parent device includes a parent device disconnection detection unit that detects a disconnection of the transmission line, and the parent device disconnection detection unit detects the disconnection. And an alarm sound is issued.
According to this configuration, when the transmission line disposed between the slave unit and the master unit is disconnected, the master unit also issues an alarm sound, and therefore the intruder such as a vacant space from which the master unit has been removed It is possible to encourage quick withdrawal and it is effective for crime prevention.

The invention of claim 3 is characterized in that, in the configuration according to claim 1 or 2, the slave unit has a first video storage unit for storing a captured video of the slave camera.
According to this configuration, since the image taken by the child device camera is stored by the child device itself, it is possible to take out and check the visitor image even if the parent device is broken or destroyed, which is effective for identifying a suspicious person And help improve security.

According to the invention of claim 4, in the configuration according to any one of claims 1 to 3, the master unit is a second image storage unit for storing a captured image of the slave unit camera, and the slave unit camera transmitted from the slave unit. The master unit video control unit controls the captured video, and the master unit video control unit controls storage in the second video storage unit according to the operation or setting of the master unit, while interlocking with activation of the slave unit camera. The video is stored in the first video storage unit.
According to this configuration, since the captured video of the slave camera is always stored in the first video storage unit, even if a predetermined operation of the master, for example, an operation for automatically recording in the master such as absent setting is forgotten, the slave The image taken by the camera can be left, the image of the visitor at the time of absence can be confirmed, and the security function can be improved.

  According to the present invention, when the transmission line disposed between the slave unit and the master unit is disconnected, a warning sound is issued from the slave unit. Therefore, when an intruder such as a vacant space removes the master unit, the slave unit is The alert operation can notify the neighborhood of an abnormal occurrence, which is effective for repelling the suspicious person.

It is a block diagram which shows an example of an intercom system, and shows each apparatus in a circuit block diagram.

  Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of the intercom system according to the present invention, 1 is a handset installed at the entrance for a visitor to call a resident and make a call, 2 is installed in a dwelling unit from the handset 1 A transmission line L1 is provided as a master unit for responding to a call and for communicating with each other.

  The handset 1 includes a call button 11 for calling a resident, a handset camera 12 for capturing an image of a visitor, a handset call unit 13 having a microphone and a speaker for calling, and a captured image of the handset camera 12 Control unit (first video storage unit) 14, slave unit video processing unit 15 for performing FM modulation or the like to transmit a captured image of the slave unit camera 12 to the master unit 2, and control the slave unit 1 A slave unit CPU 16, a slave unit communication IF 17 for communicating with the master unit 2, and a slave unit storage battery 18 as an emergency power source are provided.

  The base unit 2 includes a call button 21 for responding to a call from the handset 1, a base unit operation unit 22 for performing various operations, a base unit call unit 23 having a microphone and a speaker for calling, and a handset camera 12 A monitor 25 for displaying the captured video and stored video, and various information, a master unit video processing unit 26 for performing demodulation processing and the like to generate a video to be displayed on the monitor 25, a master unit storage unit for storing video (second video storage unit 27) Base unit CPU 28 which controls the base unit 2, base unit communication IF 29 which communicates with the base unit 1, power supply unit 30 which is connected to a commercial power source and generates operation source of the base unit 2 and the base unit 1, emergency power supply A parent storage battery 31 or the like is provided.

The operation of the intercom system configured as described above is as follows. However, since the call from the slave unit 1 and the response from the master unit 2 are the same as those in the related art, the description is omitted, and here, the storage of the image captured by the slave unit camera 12 will be mainly described.
First, in the normal mode, when the call button 11 of the handset 1 is pressed and the call operation is performed, the handset camera 12 is activated and a picked up image of the handset camera 12 is transmitted to the base unit 2 together with the call signal. Then, in the base unit 2, a ringing tone sounds and a visitor image is displayed on the monitor 25. Further, in the handset 1, under control of the handset CPU 16, the captured video of the handset camera 12 that has started imaging is recorded and stored in the handset storage unit 14.

  The video stored in the slave storage unit 14 has a smaller data size (small amount of data) than the video transmitted to the master 2. Further, the recording time is a fixed time (for example, 10 minutes), and when the fixed time is exceeded, the old video is overwritten and the storage is continued, and the old video is automatically erased.

As described above, the video is not stored in the base unit 2 in the normal mode, but the video displayed on the monitor 25 is stored in the base storage unit 27 when the base unit operation unit 22 is operated and the recording operation is performed. In addition, when the master unit operation unit 22 is set to the absence mode, similarly to the recording and storage in the slave unit 1, also in the master unit 2, the storage of the captured image of the slave camera 12 is achieved.
Specifically, when the base unit operation unit 22 is operated and the answering mode is set, the system shifts to the answering mode. When the call operation is received in the absence mode, the image captured by the slave camera 12 continues to be stored in the slave storage unit 14 and is also automatically stored in the master storage unit 27. At this time, the video stored in the master storage 27 is larger in data size than the video stored in the slave storage 14 and the video of high resolution is stored. The automatic recording in the parent device 2 is performed for a predetermined time (for example, one minute).

In addition, when a vulture appears in the absence state, it operates as follows. After checking the absence by calling operation, a suspicious person who has intruded into the dwelling unit through a window etc notices the presence of the base unit 2 equipped with the recording function, and carries away the base unit 2 so that the recorded video does not remain When the wax is removed from the wall, the connection with the slave 1 via the transmission line L1 is cut.
Then, the cordless handset CPU 16 detects it from the change in impedance of the transmission line L1, switches the power source to the cordless handset storage battery 18 which is an emergency power source, and emits an alarm sound such as a buzzer from the speaker of the cordless handset call unit 13. Inform the neighbors about it.
On the other hand, in the base unit 2 as well as the base unit CPU 28, the base unit CPU 28 recognizes the disconnection from the change in impedance of the transmission line L1 and switches the power supply to the base unit storage battery 31 which is an emergency power supply. The announcement of the alarm sound such as the buzzer sound is started from the speaker of, and the master 2 starts the announcement of the alarm sound.

  The parent storage battery 31 is in a charging state by the power supply unit 30, and the child device 1 is supplied with power from the parent device 2 via the transmission line L1, and the child storage battery 18 is charged by this power supply. .

As described above, when the intruder such as a void removes the base unit 2 and the transmission line L1 disposed between the base unit 1 and the base unit 2 is disconnected, an alarm sound is issued from the base unit 1 and the base unit 2 As a result, it is possible to notify the neighborhood of the occurrence of an abnormality from the handset 1 by means of an alarm sound, which is effective for repelling the suspicious person, and can draw attention to the neighborhood. On the other hand, the alarm sound emitted from the parent device 2 makes it possible to scold an intruder such as a vacant space and promote prompt withdrawal, which is effective for crime prevention.
In addition, since the image captured by the slave camera 12 is stored by the slave 1, even if the master 2 fails or is destroyed, the visitor video can be extracted and confirmed, which is effective in identifying a suspicious person. Help improve security.
In addition, since the image captured by the slave camera 12 is always stored in the slave storage unit 14, even if a predetermined operation of the master 2, for example, an operation to automatically record in the master 2 such as an absence setting is forgotten The image captured by the camera 12 can be left, the image of the visitor at the time of absence can be confirmed, and the security function can be improved.

  In the above embodiment, when the transmission line L1 is disconnected, both the handset 1 and the base unit 2 emit an alarm sound, but only the handset 1 may emit an alarm sound.

  1 ... handset, 2 ... base unit, 11 ... call button, 12 ... handset camera, 14 ... handset memory unit (first image storage unit), 16 ... handset CPU (handset disconnection Detection unit) 18 · · · handset storage battery, 21 · · call button, 25 · · · · · · · · · base unit storage unit (second video storage unit), 28 · · base unit CPU (master unit disconnection detection unit, Base unit video control unit), 31 · · · base unit storage battery, L1 · · · Transmission line.

Claims (4)

A handset equipped with a function to call a resident and make a call and equipped with a handset camera for capturing a visitor, a function to respond to a call from the handset, and displaying an image captured by the handset camera An intercom system having a master unit with a monitor to
The slave unit includes a slave unit disconnection detection unit that detects a disconnection of a transmission line connecting the slave unit and the master unit,
The interphone system, wherein the cordlessness disconnection detection unit causes the cordless handset to emit an alarm sound when disconnection is detected. The master unit includes a master unit disconnection detection unit that detects a disconnection of the transmission line,
The interphone system according to claim 1, wherein the master unit disconnection detection unit causes an alarm sound to be issued from the master unit when a disconnection is detected.   The interphone system according to claim 1 or 2, wherein the slave unit includes a first image storage unit that stores an image captured by the slave unit camera. The master unit has a second image storage unit for storing a pickup image of the slave unit camera, and a master unit video control unit for controlling a pickup image of the slave unit camera transmitted from the slave unit,
The base unit video control unit controls storage in the second video storage unit according to the operation or setting of the base unit, while the video is stored in the first video storage unit in conjunction with the activation of the slave camera. The intercom system according to any one of claims 1 to 3, characterized in that:

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