JP2016072751A - Intercom device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intercom device that records a video immediately after a camera is opened even if a call operation is performed in a state where the camera is closed.SOLUTION: A camera 102 of an entrance slave unit 1 comprises an illuminance sensor 115 for detecting surrounding lighting intensity. A master unit MPU 209 of a living room master unit 2 activates the camera 102 when the call operation is performed in the entrance slave unit 1, and controls so as to display an imaging video onto a monitor 202. Further, the living room master unit controls so as to light an illumination part 103 based on lighting intensity information obtained by measuring with an illuminance sensor 115 if a value of the lighting intensity is less than a predetermined value. If the value of lighting intensity is equal or larger than the predetermined value even when lighting the illumination part 103, the living room master unit determines an abnormal call operation and controls so as to start recording as a recording stand-by state after the value of lighting intensity recovered to the predetermined value or more.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an intercom apparatus for a visitor to call a resident, and more particularly to an intercom apparatus provided with a camera for imaging a visitor.

A camera is installed in the entrance cordless handset to call the resident, and a monitor that displays the camera's captured video is set up in the room base unit for responding to the call. The resident confirms the visitor by video when calling or calling. Interphone devices that can be used are widely used because they can check the visitor without facing the visitor and improve security.
Among such intercom apparatuses with a camera, there is one configured to record a suspicious person more actively. For example, in Patent Document 1, a human sensor is provided in the entrance slave unit, and when the human sensor senses and operates, the camera of the entrance slave unit is activated to perform recording.

JP 11-225327 A

However, in the configuration that relies on the human sensor, recording is performed every time a person approaches even if no call operation is performed. Therefore, frequent recording is performed, and a large memory capacity is required for this, and the cost is high. Met.
On the other hand, in the case of an intercom device with a camera, it is easy to recognize that there is a camera if you look at the entrance cordless device. For example, when a suspicious person calls the entrance cordless device to check if there is a resident In some cases, a call operation is performed by closing the camera with a hand so that the camera is not imaged. When such an operation is performed, even if the recording is performed in response to the motion of the human sensor, the probability that the video before the camera is blocked is low, and the recording is finished at a certain time. Therefore, since the recording was not continued until the camera was released, the suspicious person could not be recorded.

  Therefore, in view of such problems, the present invention provides an interphone device that waits for a camera to be released when a call operation is performed with the camera closed, and records an image immediately after being opened. It is aimed.

In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that an entrance cordless handset provided with a camera and a lighting unit for imaging a visitor in addition to a function of calling a resident and making a call, In addition to a function that responds to a call, an intercom device having a monitor that displays a captured image of a camera and a parent device that includes a memory for recording, the camera includes an illuminance sensor that detects ambient illuminance, The living room master unit has a camera image control unit that activates the camera and displays the captured image on the monitor when the entrance slave unit is called, and the camera image control unit displays the illuminance information of the illuminance sensor of the activated camera. On the basis, even if the illumination unit is turned on, if it does not reach a predetermined illuminance, it is determined that an abnormal call is made and a recording standby state is set, and recording is started when the illuminance recovers to a predetermined value or more.
According to this configuration, when a suspicious call that closes the camera is made, recording is performed after the illuminance is restored, so there is a high probability that a suspicious person's video can be recorded, and recording is performed in conjunction with the start of the camera. Memory can be used more effectively than continuing. In addition, since the recording is performed without performing the recording operation, the recording operation by the resident is not necessary, which is convenient.

The invention of claim 2 includes, in addition to the function of calling a resident and making a call, in addition to the function of responding to the call from the entrance slave unit, and the entrance slave unit provided with a camera and a lighting unit for imaging a visitor. An intercom apparatus having a monitor for displaying captured images of a camera and a living room base unit having a memory for recording, wherein the camera has an illuminance sensor for detecting ambient illuminance, When the slave unit is called, the camera has a camera image control unit that activates the camera and displays a captured image on the monitor. The camera image control unit starts recording when the camera is activated, and Based on the illuminance information of the illuminance sensor, even if the illumination unit is turned on, if the predetermined illuminance is not met, it is determined that an abnormal call has been made and recording is continued regardless of the preset recording duration. Once recovered, further characterized in that to continue for a certain time recording from the time of recovery.
According to this configuration, when a suspicious call that closes the camera is made, recording is continued until the illuminance recovers from the start of the call, so if the illuminance recovers instantaneously during that time, the video is recorded. Can leave. Then, when the illuminance is completely recovered, recording is continued for a certain period from that point, so the probability that a suspicious person can be recorded is high.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the camera video control unit that is determined to be an abnormal call stops the ringing confirmation sound at the entrance unit.
According to this configuration, since the call confirmation sound does not sound, the suspicious person who performed the call operation can easily release the covering hand after judging that the call has failed. Therefore, the probability that a suspicious person can be recorded increases.

  According to the present invention, when a suspicious call that closes the camera is made, the captured video is recorded after waiting for the illuminance to recover, so there is a high probability that the video of the suspicious person can be recorded.

It is a circuit block diagram which shows an example of the intercom apparatus which concerns on this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a circuit block diagram showing an example of an interphone device according to the present invention. 1 is an entrance cordless device for calling a resident and making a call while being installed at an entrance, and 2 is an entrance cordless device 1 installed in a living room. It is a living room parent machine for answering calls from. Both are connected via a transmission line L1.

The front door 1 includes a call button 101 for calling a resident, a camera 102 for shooting a visitor and a lighting unit 103 for night shooting, a microphone 104 and a speaker 105 for talking, and a microphone for amplifying a voice signal Amplifier 106 and speaker amplifier 107, slave unit MPU 109 for controlling the entire entrance slave unit, slave unit multiplexing circuit 110 for communicating with living room master unit 2 via transmission line L1, modulation circuit 111 for modulating video signals, audio A modulation circuit 112 that modulates a signal, a demodulation circuit 113 that demodulates a voice signal, a modulation / demodulation circuit 114 that modulates and demodulates a control signal such as a calling signal, and the like are provided.
The camera 102 is provided with an illuminance sensor 115 that measures ambient illuminance, and starts illuminance measurement when the camera 102 is activated.

  The room master unit 2 includes a call button 201 for responding to a call, a monitor 202 for displaying an image transmitted from the entrance unit 1, a touch panel 203 as an operation unit integrated with the monitor 202, and a call The microphone 204 and the speaker 205, the microphone amplifier 206 and the speaker amplifier 207 that amplify the audio signal, the memory 208 that records the captured image of the camera 102, the master unit MPU 209 that controls each unit of the living room master unit 2, and the entrance slave unit 1 Base unit multiplexing circuit 210 for demodulating, demodulating circuit 211 for demodulating the video signal, demodulating circuit 212 for demodulating the audio signal, modulating circuit 213 for modulating the audio signal, modulation for modulating and demodulating the control signal such as the calling signal / Demodulation circuit 214 and the like.

The operation of the intercom apparatus configured in this way is as follows. First, a case where recording is not linked to the start of imaging by the camera 102 will be described. When a visitor presses down the call button 101 of the entrance slave unit 1, the slave unit MPU 109 generates a call signal, which is modulated by the modulation / demodulation circuit 114, and is transmitted through the slave unit multiplexing circuit 110 and the transmission line L1. Sent to the machine 2.
In the base unit 2, the call signal is demodulated by the modulation / demodulation circuit 214 via the base unit multiplexing circuit 210 and received by the base unit MPU 209. The base unit MPU 209 that has received the call signal generates a camera activation signal and transmits it to the front door unit 1 through a path reverse to the call signal.

  Upon receiving the camera activation signal, the entrance slave unit 1 activates the camera 102 by the slave unit MPU 109, acquires illuminance information measured by the illuminance sensor 115, and transmits the illuminance information to the room master unit 2 through the same route as the call signal. The captured image (video signal) of the camera 102 activated at the same time is transmitted to the room master unit 2 via the modulation circuit 111, the slave unit multiplexing circuit 110, and the transmission line L1.

The base unit MPU 209 that has received the illuminance information does not turn on the illumination unit 103 if the illuminance is equal to or higher than the reference value. However, if the illuminance is insufficient to meet the reference value and the illuminance is insufficient, the lighting signal is the same as the camera activation signal. Then, the illumination unit 103 is turned on by transmitting to the slave unit MPU 109 through the route of, and imaging is continued.
Further, the video signal transmitted to the living room master unit 2 is demodulated by the demodulation circuit 211 via the master unit multiplexing circuit 210 and displayed on the monitor 202.

  Master unit MPU 209 periodically acquires illuminance information from illuminance sensor 115 and controls lighting / extinction of lighting unit 103 in response to a change in illuminance while camera 102 is imaging. If the predetermined illuminance is not reached even when the illumination unit 103 is turned on, the state shifts to an abnormal call mode described later.

  Further, in the base unit 2, the base unit MPU 209 starts ringing of the ringing sound from the speaker 205 in accordance with the display of the captured image of the camera 102 on the monitor 202, and the ringing confirmation sound is output from the speaker 105 of the entrance unit 1. Start reporting.

When the call button 201 of the room master unit 2 is operated by the resident in response to this ringing tone, a call path is formed with the front door slave unit 1 under the control of the master unit MPU 209, and both microphones 104 and 204 are connected. In addition, a call can be made between the visitor and the resident using the speakers 105 and 205.
Specifically, the audio signals input to both the microphones 104 and 204 are modulated by the modulation circuits 112 and 213, transmitted to each other via the transmission line L1, and demodulated by the demodulation circuits 113 and 212 to be transmitted to the speakers 105, It is reported from 205. That is, a hands-free call is performed.
The visitor video is displayed on the monitor 202 from the sound of the ringing sound, and the resident who responds can recognize the visitor with the video from the stage before the call.

Thereafter, when the call is ended, an end button (not shown) of the living room base unit 2 is pressed, so that the base unit MPU 209 blocks the communication path and turns off the camera 102.
If the call button 201 is not operated and no response is made even if a certain time (for example, 40 seconds) elapses after the call is made, the master unit MPU 209 terminates the call operation and imaging of the camera 102 and stands by. Return to state.

  Next, a case where the camera 102 is blocked by a visitor's hand when receiving a call operation and the camera 102 does not operate normally will be described. In response to the call operation, the camera 102 is activated as described above, and the video is displayed on the monitor 202. However, the master unit MPU 209 that has received the illuminance information from the illuminance sensor 115 of the activated camera 102 grasps that the illuminance of the camera 102 has not reached a predetermined value, and turns on the illumination unit 103. Note that since the camera 102 is closed, a dark image is displayed on the monitor 202.

  Then, base unit MPU 209 that has recognized from the subsequent illuminance information that the illuminance does not reach a predetermined value even when lighting section 103 is turned on, determines that this state is because camera 102 is blocked by a hand or the like. To shift to the abnormal call mode. When transitioning to the abnormal call mode, the base unit MPU 209 transitions to a recording standby state and extends the imaging of the camera 102 and the lighting of the illumination unit 103 without ending even when a predetermined calling end time elapses. Continue to monitor illuminance. Moreover, if it transfers to abnormal call mode, the report sound of the call confirmation sound normally implemented from the entrance cordless handset 1 will be stopped.

In the meantime, when the illuminance recovers to a predetermined amount or more, recording of the captured image of the camera 102 is performed in the memory 208. Specifically, the video signal transmitted from the camera 102 is transmitted to the base unit 2 at the time of calling for display on the monitor 202, and this video is recorded. The video signal transmitted from the entrance unit 1 to the base unit multiplexing circuit 210 is demodulated by the modulation / demodulation circuit 214 under the control of the base unit MPU 209 and stored in the memory 208. This recording is performed for a predetermined time.
However, this abnormal call mode is continued for a certain time (for example, 60 seconds), and if the illuminance does not recover during this time, the abnormal call mode is terminated and the standby state is restored.

In this way, when a suspicious call is made to block the camera 102, recording is performed after the recovery of illuminance, so there is a high probability that a suspicious person's video can be recorded, and recording is performed in conjunction with the activation of the camera 102. The memory 208 can be used more effectively than starting. In addition, since the recording is performed without performing the recording operation, the recording operation by the resident is not necessary, which is convenient.
Further, since the call confirmation sound is not reported in the abnormal call mode, the suspicious person who has called up the call easily determines that the interphone device is out of order and releases the covering hand. Therefore, the probability that a suspicious person can be recorded increases.

  Next, a case where recording is started in conjunction with the start of imaging by the camera 102 will be described. However, if the camera 102 normally performs an image capturing operation without being blocked when the front door 1 is called, an operation that performs recording for a certain time in conjunction with the activation of the camera 102 has been performed. Since the recording operation is the same as the above-described embodiment except for the recording operation, the description is omitted. Here, the operation when the camera 102 is blocked and the illuminance is less than the predetermined amount is mainly described. Explained.

The room master 2 that has been called and receives the call signal from the entrance cordless handset 1 activates the camera 102 under the control of the master MPU 209 and displays a captured image on the monitor 202 in the same manner as in the above embodiment. At the same time, the base unit MPU 209 demodulates the video signal transmitted from the front door unit 1 by the modulation / demodulation circuit 214 and stores it in the memory 208.
Furthermore, when the illuminance information is obtained from the illuminance sensor 115 and it is understood that the illuminance of the camera 102 has not reached the predetermined value, the illumination unit 103 is turned on. However, even if the illumination unit 103 is turned on, the illuminance does not reach the predetermined value. When the state is recognized, it is determined that this is because the camera 102 is blocked by a hand or the like, and the abnormal call mode is entered.

  When the mode is changed to the abnormal call mode, even if the video recording is set to end in a predetermined time, the imaging of the camera 102 is continued and the recording is extended. Moreover, the report sound of the call confirmation sound normally performed from the front door 1 is also stopped. Thus, the monitoring of the illuminance is continued, and when the illuminance is recovered, the recording is continued for a certain time (for example, 10 seconds) from that point. If the preset recording time elapses, the abnormal call mode is terminated without waiting for the illuminance to recover, and the standby state is restored.

In this way, when a suspicious call is made to block the camera 102, recording is continued until the illuminance is recovered from the start of the call, so if the illuminance is recovered instantaneously during that time, the video is recorded and left. be able to. When the illuminance is completely recovered, the recording is continued for a certain time from that point, so that the probability of recording the suspicious person is high.
In addition, since the call confirmation sound does not sound for the suspicious person who performed the call operation, it is easy to release the covering hand after judging that it is broken, and the probability that the suspicious person can be recorded increases.

  In the above embodiment, the captured image of the camera 102 is displayed on the monitor 202 even if the illuminance does not reach the predetermined value, but the display is stopped and a message such as “Camera is blocked” is displayed. Also good.

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Claims (3)

In addition to the function to call a resident and make a call, an entrance cordless handset equipped with a camera and an illumination unit for imaging a visitor, and a function for responding to a call from the entrance cordless handset, as well as displaying the captured image of the camera An intercom device having a monitor for recording and a base unit having a memory for recording,
While the camera is equipped with an illuminance sensor that detects ambient illuminance,
The living room master unit has a camera video control unit that activates the camera when the entrance slave unit is called and displays a captured video on the monitor,
The camera video control unit determines that an abnormal call has occurred and does not enter a recording standby state if the illumination unit does not satisfy the predetermined illuminance based on the illuminance information of the illuminance sensor of the activated camera. The intercom apparatus, wherein recording is started when recovering to a predetermined value or more. In addition to the function to call a resident and make a call, an entrance cordless handset equipped with a camera and an illumination unit for imaging a visitor, and a function for responding to a call from the entrance cordless handset, as well as displaying the captured image of the camera An intercom device having a monitor for recording and a base unit having a memory for recording,
While the camera is equipped with an illuminance sensor for detecting ambient illuminance,
The living room master unit has a camera video control unit that activates the camera when the entrance slave unit is called and displays a captured video on the monitor,
The camera video control unit starts recording upon receiving the camera activation,
Based on the illuminance information of the illuminance sensor of the activated camera, if the illumination unit is turned on and the predetermined illuminance is not met, it is determined that an abnormal call has occurred, and recording continues regardless of the preset recording duration. And
After that, when the illuminance recovers to a predetermined value or more, the video intercom apparatus continues recording for a certain period of time after the recovery. The intercom apparatus according to claim 1 or 2, wherein the camera video control unit that has determined that the call is abnormal stops the call confirmation sound in the entrance unit.

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