JP3949051B2 - Intercom device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intercom apparatus having a function of recording a visitor's face image.
[0002]
[Prior art]
A conventional intercom device is composed of a slave unit installed in the vicinity of a door and a master unit installed in a home. The slave unit captures an image including a visitor's face image and transmits an image signal to the master unit. A camera to send to the machine, a microphone to collect the voice of the visitor and send it to the parent machine as an audio signal, a speaker to notify the visitor of the voice signal transmitted from the parent machine, and a call button operated by the visitor It is composed of
In the main unit, a monitor for receiving and displaying the image signal transmitted from the sub unit, a speaker that outputs a ringing tone by the paging signal transmitted from the sub unit, and a voice signal of the visitor are output and responded It has a receiver for inputting a person's voice.
When the visitor presses the call button on the child device, a call signal is transmitted to the parent device and a ringing tone is emitted from the speaker of the parent device. At the same time, an image including the visitor's face image is captured and transmitted to the master unit and displayed on the monitor of the master unit. When the respondent picks up the handset of the master unit, Calls can be made between aircraft. However, in these conventional intercom devices, for example, even when a child makes a mischief such as pressing the call button of the child device and escaping as it is, there is a problem that the calling sound sounds in the parent device, which is troublesome.
In addition, there is a risk that a call button is pressed to confirm the presence or absence of a response in order to confirm whether a suspicious person such as a vacant nest is away.
Therefore, for the purpose of providing a doorphone system that allows an appropriate person to respond to visitors, a doorphone terminal equipped with a call switch and a ringing tone can be output when the call switch is activated. A person authentication door phone system comprising a response terminal, wherein the response terminal stores a person database storing image data representing a person who may operate a call switch, and image data and person database sent from a camera It has been proposed to provide an image recognition unit that collates with the image data stored in the computer, and to output a ringing tone related to a person appropriate for the person who operated the call switch (see Patent Document 1).
In Japanese Patent Application Laid-Open No. 2004-228620, a ringing tone is generated even when the image data related to the visitor's face sent from the camera does not match any of the data stored in the person database. In addition, it is described that the call can be rejected when the image data of the operator's face is not stored in the person database, so that the troublesomeness of answering an unnecessary call is eliminated. It is supposed to be possible.
[0003]
[Patent Document 1]
JP 2000-295603 A
[0004]
[Problems to be solved by the invention]
However, in the invention described in Patent Document 1, it is set so that a ringing tone is generated even when image data relating to a visitor's face sent from a camera does not match any of the data stored in the person database. Is set to reject the call when the child's prank generates a ringing tone and the operator's face image data is not stored in the person database In some cases, it is possible to prevent a ringing tone due to a child's mischief, but it also rejects the call of the first visitor.
Also, in this case, when the call button is pressed so that the suspicious person does not appear on the camera, no ringing sound is generated and no one in the house responds. There was also danger.
[0005]
Therefore, in view of the above problems, an object of the present invention is to realize an intercom device that can respond to a visitor who visits for the first time and rejects a call when a call button of a child device is pressed due to mischief. It is in.
Another object of the present invention is to realize an intercom apparatus that does not know whether the user is away or not by generating voice guidance for a suspicious person's operation of a call button or the like.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises an interphone slave unit provided with a call button, and an interphone master unit installed in a house with notifying means for notifying a ring tone according to the operation of the call button. An image input unit for inputting an image of the front face of the interphone slave unit and an image recognition unit for recognizing whether or not a face image is included in an image when the call button is operated by a visitor And when the call button is operated by a visitor, the image includes a face image, and when the call button is operated by the visitor, the image includes a face image. It said to have a control unit which inhibits the generation of ringing tone when it is not.
According to this aspect, it is possible to make the ringing tone only when the call button is operated by the visitor.
[0009]
Moreover, as a preferable aspect, the control unit appropriately sets a face to the visitor from the intercom slave when the call button is operated by the visitor and the face image is not included in the image. Notify you to put it in position.
According to this aspect, guidance can be performed so that a face image can be obtained when the face image cannot be recognized, for example, when a visitor operates without facing the intercom slave.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing a configuration of an intercom apparatus according to an embodiment of the present invention.
The intercom device includes an interphone slave unit 1 installed in the vicinity of a door and an interphone master unit 2 installed in a house. The interphone slave unit 1 and the interphone master unit 2 are connected by a communication line 3.
[0011]
The intercom handset 1 shoots an image including a visitor's face image, outputs an image signal, a microphone 13 that collects the visitor's voice and outputs it as an audio signal, and the interphone base unit 2 The speaker 14 for notifying the visitor of the transmitted audio signal, the call button 12 operated by the visitor, the video signal, the audio signal, and the activation signal generated by the operation of the call button are transmitted via the communication line 3, and The communication unit 15 is configured to receive an audio signal from the intercom base unit 2.
[0012]
The interphone base unit 2 includes a control unit 21 for controlling each unit described later, an image signal control unit 22 for receiving and controlling the image signal transmitted from the interphone handset 1, and the received image signal. The image signal transmitted from the intercom handset 1 is connected to the image display unit 23 configured by a liquid crystal display for displaying an image, the image storage unit 24 for storing the image signal, and the image signal control unit 22. A face image recognition unit 25 for recognizing that a visitor's face image has been obtained, a ringing tone generation unit 26 that generates a ringing tone according to a control signal of the control unit 21, and a sound signal of the ringing tone generation unit 26 The speaker 27 that rings the ringing tone, the voice guidance generation unit 29 that generates guidance voices by the control signal of the control unit 21, and the voice signal and transmission / reception from the intercom handset 1 A voice signal control unit 28 for controlling a voice signal from the receiver 30; a handset 30 for a responder to talk with a visitor; a voice storage unit 31 for storing a visitor's voice; It is comprised from the communication part 32 for communicating with.
[0013]
Next, the operation of the intercom apparatus according to the present invention will be described with reference to the flowchart of FIG.
The camera 11 of the intercom handset 1 always operates and sends a video signal to the intercom base unit 2 via the communication line 3. In the intercom base unit 2, the received image signal is stored in the image storage unit 24 based on the control of the image signal control unit 22. The image storage unit 24 is composed of, for example, a ring buffer, and stores a predetermined amount of time overwritten by the storage capacity of the ring buffer.
[0014]
First, the visitor stands in front of the intercom handset 1 and presses the call button 12. (Step S001)
The communication unit 15 of the intercom handset 1 transmits a call signal to the interphone base unit 2 via the communication line 3.
When the intercom base unit 2 receives the calling signal at the communication unit 32, the control unit 21 activates the face image recognition unit 25, and the face image recognition unit 25 recognizes the face image of the visitor in the image signal (step S002). ). Here, the recognition of the face image can use known image processing and recognition technology, so it will not be described in detail. For example, the difference image between the previous image and the image when the call button is pressed is processed and binarized. The shape of the eyes, nose and mouth is recognized, and the face is recognized based on the positional relationship.
Here, it is only necessary to be able to identify whether or not an image includes what appears to be a face.
[0015]
Next, when the face image recognition unit 25 recognizes the presence of a face in the image signal when the call button 12 is operated (YES in step S003), the control unit 21 activates the ringing sound generation unit 26 To do. The ringing tone generator 26 generates a ringing tone signal (step S004). Then, the speaker 27 sounds a ringing tone according to a ringing tone signal from the ringing tone generator 26.
At the same time, the image transmitted from the intercom handset 1 is displayed on the image display unit 23. The attendee can talk with the intercom handset 1 by picking up the handset 30 when he / she interacts with the visitor after viewing the image.
When the face is recognized in the image in step S003, the control unit 21 may record the image together with time information in a memory (not shown) of the image storage unit 24.
[0016]
When the visitor is not standing in front of the intercom handset 1, the image captured by the camera 11 of the intercom handset 1 may not include the visitor's face image.
In this case, since the face image recognition unit 25 cannot recognize the face image in the image signal in step S003, the control unit 21 activates the voice guidance generation unit 29. Please operate at the position where "appears." Is sent to the intercom handset 1. The intercom handset 1 generates a guidance voice from the speaker 14 based on the voice signal received from the interphone base unit 2 (step S005).
The visitor changes the standing position by voice guidance and operates the call button again.
[0017]
When the intercom base unit 2 receives the calling signal (YES in step S006), the control unit 21 returns to step S002, causes the face image recognition unit 25 to recognize the face image of the visitor in the image signal, and recognizes the presence of the face. When it is possible, the control unit 21 activates the ringing tone generation unit 26 and rings the ringing tone from the speaker 27.
Even if voice guidance is performed, if the call button is not operated again within a predetermined time (for example, within 10 seconds) and no call signal is received (NO in step S006), the first call button operation is operated by mischief. For example, the control unit 21 does not transmit an activation signal to the ringing tone generation unit 26, and the ringing tone does not sound from the speaker 27.
[0018]
【The invention's effect】
According to the present invention, when a visitor who visits for the first time presses the call button of the interphone slave unit, the interphone master unit sounds a ringing tone and can respond, and the call button of the interphone slave unit is pushed by mischief. In this case, the ringing tone can be prevented from ringing.
In addition, when the suspicious person presses the call button so that his / her face does not appear on the camera, guidance can be given so that his / her face is photographed, and the act of confirming whether or not the suspicious person is absent can be prevented.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an intercom apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing an operation of the intercom apparatus according to the embodiment of the present invention.
[Explanation of symbols]
1 ... Interphone slave unit 2 ... Interphone master unit 3 ... Communication line

Claims (2)

An intercom handset with a call button;
An intercom device comprising an interphone master unit installed in a home with a notification means for notifying a ringing sound in response to an operation of the call button,
An image input means for inputting an image of the front face of the intercom handset, an image recognition unit for recognizing whether a face image is included in an image when the call button is operated by a visitor, and the call button The ringing sound is generated when a face image is included in an image when operated by a visitor, and the face image is not included in an image when the call button is operated by a visitor. intercom apparatus characterized by chromatic and a control unit that inhibits the generation of ringing tone. The control unit notifies the visitor to place the face at an appropriate position from the intercom handset when a face image is not included in the image when the call button is operated by the visitor. The intercom apparatus according to claim 1 .

Images