JP2010074750A - Intercom system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercom system imaging surroundings of a plurality of doors with one wide-angle surveillance camera. <P>SOLUTION: The intercom system includes: a plurality of door slave units installed outdoors; a plurality of room master units which respond to calls from respective door slave units; and a surveillance camera connected to the plurality of room master units and imaging surroundings of the door slave units. Each room master unit has a CPU which transmits a camera start-up signal to the surveillance camera when called from a corresponding door slave unit. The surveillance camera includes: an imaging section imaging surroundings of the plurality of door slave units; a door-slave-unit coverage storage section that stores imaging ranges for imaging surroundings corresponding to respective door slave units; and a camera screen range control section that extracts imaging range information corresponding to the door slave unit from the door-slave-unit coverage storage section when receives the camera start-up signal from the room master unit, and performs zooming, panning, and tilting. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an interphone system in which a surveillance camera capable of imaging the surroundings of a plurality of entrance cordless handsets is capable of imaging a spot that becomes a blind spot that cannot be picked up by the camera of the entrance cordless handset with the surveillance camera.

Conventionally, interphone devices that display images captured by the entrance unit on the living room base unit are widely known, and the images captured by the monitoring camera can be confirmed on the interphone base unit.
For example, in Patent Document 1, it is possible to capture images captured by a plurality of surveillance cameras using a living room master unit, and it is also possible to confirm an image of a location that becomes a blind spot.
JP2004-171403

However, surveillance cameras such as Patent Document 1 are mostly used for the purpose of monitoring the vicinity of a home due to privacy problems, and the imaging range of the surveillance camera can only be used within a narrow range. Therefore, in order to minimize blind spots, security has been improved by using multiple surveillance cameras.

The present invention has been made to solve the above-described problem, and can capture an image of a blind spot by a surveillance camera equipped with a wide-angle camera, and can capture only the vicinity of the home to protect privacy. An object is to provide an intercom system capable of performing the above.

In order to solve the above-described problem, the invention described in claim 1 includes a plurality of entrance cordless devices installed outdoors, a plurality of room master units responding to calls from the respective entrance cordless handsets, and a plurality of room spaces. In an intercom system equipped with a monitoring camera that is connected to the parent device and images the surroundings of the entrance child device, the living room parent device includes a CPU that transmits a camera activation signal to the monitoring camera when called from the entrance child device. The camera includes an imaging unit capable of imaging the surroundings of a plurality of entrance cordless devices, an entrance cord corresponding range storage unit storing an imaging range for imaging the surroundings of the entrance cordless devices corresponding to the respective entrance cordless devices, When a camera activation signal is received from the master unit, a camera screen range control unit is provided that takes out imaging range information corresponding to the entrance unit from the entrance unit correspondence range storage unit, and performs zoom and pan / tilt. To.

According to such an invention, when a visitor makes a call, the situation around the entrance including the visitor can be grasped.

The invention of claim 2 includes a sensor that detects a person and a sensor range storage unit that stores an imaging range when the sensor detects, in the surveillance camera, so that imaging range information is extracted from the sensor range storage unit, zooming, The pan / tilt can be performed by the camera image range control unit.

According to such an invention, when a visitor is detected by the sensor, the situation in the vicinity of the visitor can be grasped.

According to a third aspect of the present invention, the surveillance camera includes a face authentication unit that determines whether or not there is a face in an image captured by the camera, and when the face authentication unit does not detect a face, the camera detects a plurality of entrance slave units. The entire periphery can be imaged.

According to such an invention, when the imaging is started by the monitoring camera and no person is detected, it is possible to grasp the situation around the plurality of front door units.

According to the intercom system of the present invention, a single wide-angle surveillance camera can image the vicinity of a plurality of entrances, so that the system configuration can be made inexpensive.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a best implementation portable example to which an interphone system of the present invention is applied will be described with reference to the drawings. As shown in FIG. 1, the intercom system of the present invention is composed of entrance cordless handsets 1 a, 1 b,..., Living room masters 2 a, 2 b,. FIG. 2 shows a block diagram. FIG. 3 is a diagram illustrating an imaging range when imaging is performed by the imaging unit 301 of the monitoring camera 3.

The entrance cordless devices 1a, 1b,... Are the entrance cameras 101a, 101b,... For imaging the surroundings of the entrance, and call buttons 102a, 102b,. .. For communicating with the mobile phone, and handset I / Fs 104a, 104b,... For communicating with the base units 2a, 2b,.

The living room master units 2a, 2b,... Are monitors 201a, 201b,... That output images captured by the entrance cameras 101a, 101b,. , And operation buttons 202a, 202b,... For performing an operation for switching the images from the slave units 1a, 1b,... Or the images from the surveillance camera 3, and the sound units 203a, 203b,. .. And CPUs 204a, 204b,... For controlling the living room master units 2a, 2b,... And the master unit I / Fs 205a, 205b for communicating with the entrance slave units 1a, 1b,.・ It consists of

The surveillance camera 3 includes an imaging unit 301 that images the surroundings of a plurality of entrance slave units, an entrance slave unit corresponding range storage unit 302 that stores an imaging range corresponding to each entrance slave unit 1a, 1b,. When the camera activation signal is received from the parent device 2a, 2b,..., The imaging range information corresponding to the called door device 1a, 1b,. , A camera screen range control unit 303 that performs pan / tilt control, a sensor 304 that detects a person, a sensor range storage unit 305 that stores an imaging range to be imaged when detected by the sensor 304, and an image captured by the imaging unit 301 A face authentication unit 306 that determines whether or not there is a face in the video, and a camera I / F 307 for communicating with the room master units 2a, 2b,.

Operation will be described in such an intercom system. First, the operation when the call button 102b is operated on the front door 1b will be described.

When a visitor operates the call button 102b of the entrance slave unit 1b, a call signal is transmitted to the CPU 204b via the slave unit I / F 104b and the master unit I / F 205b, and a camera activation signal is sent to the surveillance camera 3. Send. The CPU 204b that has received the calling signal controls to output a calling sound from the sound unit 203b. Furthermore, the audio signal from the acoustic unit 103b of the entrance unit 1b is output to the acoustic unit 203b of the living room base unit 2b via the slave unit I / F 104b and the master unit I / F 205b, and the entrance of the entrance unit 1b. The video signal from the camera 101b is output to the monitor 201b via the child device I / F 104b and the parent device I / F 205b. At this time, by performing a call operation with the operation button 202b of the living room main unit, an audio signal from the acoustic unit 203b of the living room main unit 2b is transmitted to the entrance terminal 1b via the main unit I / F 205b and the sub unit I / F 104b. Can be output to the acoustic unit 103b.

The monitoring camera 3 that has received the camera activation signal from the living room master unit 2 b transmits the imaging range information of the entrance unit 1 b from the entrance unit corresponding range storage unit 302 to the camera screen range control unit 303. For example, FIG. 3A shows the maximum range that can be imaged by the imaging unit 301, and FIG. 3B shows the imaging range when called by the front cordless handsets 1b to 1d. When called by the entrance unit 1b, the camera screen range control unit 303 performs zoom and pan / tilt control on the imaging range in FIG. 3C, and the imaging unit 301 captures the imaging range as shown in FIG. I do. The captured video signal is transmitted to the monitor 201b via the camera I / F 307 and the parent device I / F 205b. At this time, the video of the surveillance camera 3 can be confirmed by the room master 2b by performing the switching operation of the video of the room master 2b with the operation button 202b.

Next, the operation of the monitoring camera 3 when the sensor 304 of the monitoring camera 3 detects a person will be described.

When a person or the like is detected by the sensor 304 of the monitoring camera 3, imaging range information is transmitted from the sensor range storage unit 305 to the camera screen range control unit 303. For example, as shown in FIG. 3E, a detection range for detecting a person or the like is set in advance. When a person or the like is detected by the sensor 304, the camera screen range control unit 303 performs zoom and pan / tilt control on the image capturing range in FIG. 3F, and the image capturing unit 301 performs image capturing in the image capturing range as illustrated in FIG. . The captured video signal is transmitted to the monitor 201b via the camera I / F 307 and the parent device I / F 205b, and can be confirmed on the monitors 201a and 201b of the living room parent devices 2a, 2b,.

Here, calling from the entrance slave units 1a, 1b,... Or detecting a person by the sensor 304, and when the imaging unit 301 starts imaging, the face authentication unit 306 performs face authentication. If it is determined that there is no face in the captured image at this time, the imaging range information acquired by the entrance terminal-compatible range storage unit 302 or the sensor range storage unit 305 is ignored, and the maximum imaging range that can be captured by the imaging unit 301 For example, it is possible to transmit the image of the image range leaving in FIG. 3A to the room master units 2a, 2b,.

Moreover, it is also possible to record without outputting to each monitor 201a, 201b, ... by providing the recording function in living room main unit 2a, 2b, ....

Furthermore, it is also possible to arbitrarily change the imaging range of the entrance unit-compatible range storage unit 302 or the sensor range storage unit 305.

As in the first to third embodiments, a single wide-angle surveillance camera can image the vicinity of a plurality of entrances, so that the system configuration can be made inexpensive.

1 is a system configuration diagram of an intercom system according to the present invention. The block diagram of the intercom system which concerns on this invention. The imaging range figure imaged with the surveillance camera which concerns on this invention.

Explanation of symbols

1a, 1b, ... Entrance cordless handsets 2a, 2b, ... Living room masters 204a, 204b, ... CPU
DESCRIPTION OF SYMBOLS 3 Surveillance camera 301 Image pick-up part 302 Entrance unit corresponding | compatible range memory | storage part 303 Camera screen range control part

Claims (3)

A plurality of entrance cordless devices (1a, 1b,...) Installed outdoors, a plurality of living room master devices (2a, 2b,...) Responding to calls from the respective entrance cordless devices, and the plurality In the intercom system provided with a surveillance camera (3) connected to the living room base unit and imaging the periphery of the entrance unit,
The living room master unit includes a CPU (204a, 204b,...) That transmits a camera activation signal to the monitoring camera when called from the entrance slave unit,
The surveillance camera is compatible with an entrance slave unit that stores an imaging unit (301) that can capture the periphery of the plurality of entrance slave units and an imaging range that captures the periphery of the entrance slave unit corresponding to each entrance slave unit. When a camera activation signal is received from the range storage unit (302) and the living room base unit, a camera screen for taking out the imaging range information corresponding to the entrance unit from the entrance unit corresponding range storage unit and performing zoom and pan / tilt An intercom system comprising a range control unit (303). By providing the monitoring camera with a sensor (304) for detecting a person and a sensor range storage unit (305) for storing an imaging range when the sensor detects the imaging range information, the imaging range information is extracted from the sensor range storage unit. The intercom system according to claim 1, wherein zooming, panning and tilting can be performed by the camera image range control unit. The surveillance camera includes a face authentication unit (306) that determines whether or not there is a face in the video imaged by the camera, and when a face is not detected by the face authentication unit, the camera detects a plurality of entrance slave units. The intercom system according to claim 1 or 2, wherein the entire periphery can be imaged.

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