JP2011030121A - Intercom system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercom system capable of obtaining the circumferential illuminance of a slave unit and performing the automatic correction of an image while reducing power consumption by a solar cell. <P>SOLUTION: The intercom system is provided with: an entrance slave unit with a camera equipped with the camera for imaging a visitor, and a function to call a resident; and a sitting room master unit which is used to be connected with the entrance slave unit with the camera and equipped with a monitor displaying a camera of the entrance slave unit with the camera and a function to answer a calling from the entrance slave unit with the camera. The entrance slave unit with the camera is provided with: a solar cell panel for power generation; an electric energy measurement means for measuring the generated electric energy of the solar cell panel; and an illuminance measurement means for measuring illuminance surrounding the entrance slave unit with the camera based on generated electric energy measured by the electric energy measurement means. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an intercom apparatus, and more particularly, to an intercom apparatus that enables image correction using an entrance cordless handset that includes a plurality of solar battery panels.

Conventional intercom devices are known that are easy to see by changing the shutter pulse of the camera that is capturing the visitor by operating the backlight correction button when the visitor's video is difficult to see (for example, Patent Document 1). In addition, it is known that not only the power consumption during standby is reduced by providing a solar battery in the entrance cordless handset, but also operation is possible without receiving power supply from a commercial power source even after a call operation. (For example, patent document 2).
According to such an intercom device, it is possible to make it easy to check a visitor's video and to reduce power consumption.

Japanese Patent Application Laid-Open No. 07-245758 JP-A-2005-217637

However, in the intercom apparatus of the conventional example, in the backlight correction, an easy-to-see image is obtained by changing the shutter pulse according to the resident's judgment, so that the operation is troublesome for the resident.
Moreover, although the solar cell attached to the entrance cordless handset was used in order to reduce power consumption, it was not used for other uses.
In order to solve the above-described problems, an object of the present invention is to provide an intercom device capable of grasping the illuminance around the slave unit and automatically correcting an image while reducing power consumption by a solar battery. Is.

In order to solve the above-mentioned problem, the invention described in claim 1 is connected to a camera for photographing a visitor and a camera-equipped cordless handset having a function of calling a resident, and a camera-filled cordless handset. And an intercom apparatus having a monitor for displaying a camera of a camera-equipped cordless handset and a function of responding to a call from the camera-carded cordless handset. Illuminance measurement for measuring the illuminance around the entrance unit with a camera based on the power generation amount measured by the power amount measurement means Means.
According to a second aspect of the present invention, in the first aspect of the invention, the camera-equipped entrance cordless handset includes an exposure amount correcting unit that corrects an exposure amount of the camera based on the illuminance measured by the illuminance measuring unit. .
The invention described in claim 3 is the solar cell panel according to claim 1, wherein the solar cell panel includes a color filter, and the specific wavelength photoelectric energy measuring means for measuring the generated electric energy by the light of the specific wavelength by the color filter, and the specific wavelength photoelectric And white balance correction means for correcting the white balance of the camera based on the amount of power generated by the force measurement means.
The invention described in claim 4 is the entrance device with camera according to claim 1, wherein the entrance device with camera includes a plurality of solar cell panels, and the solar cell panels are installed in two or more directions of the entrance device with camera. The solar light incident direction measuring means for measuring the incident direction of sunlight based on the generated electric energy of each solar cell panel measured by the means is provided.
According to a fifth aspect of the present invention, in the fourth aspect, the camera-equipped entrance cordless handset includes means for correcting the exposure amount of the camera based on the incident direction of sunlight measured by the sunlight incident direction measuring means. It is characterized by that.

According to the first aspect of the present invention, it is possible to measure the illuminance around the entrance unit from the amount of power generated by the solar cell panel attached to the entrance unit, and perform various operations based on this. Can do.
According to the invention of claim 2, the exposure amount of the camera can be corrected based on the illuminance measured in claim 1.
According to the invention of claim 3, it is possible to correct the white balance of the camera based on the amount of power by the light of a specific wavelength.
According to the invention of claim 4, since the incident direction of sunlight can be measured by providing a plurality of solar battery panels, from which direction the sunlight is shining with respect to the camera of the entrance unit. I can grasp it.
According to the invention of claim 5, the exposure amount of the camera can be corrected based on the incident direction of sunlight measured in claim 4.

It is a block diagram of the intercom apparatus of this embodiment. It is an external view of the entrance cordless handset of this embodiment.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.
The intercom apparatus 1 according to this embodiment is configured as shown in the block diagram of FIG. In other words, the intercom apparatus 1 receives a video signal transmitted from the entrance device 10 with a camera for a visitor to call a resident and talk, and the video signal transmitted from the entrance device with the camera, and the received video signal will be described later. The room master unit 20 can be displayed on a monitor and can communicate with a visitor.

  The entrance unit with camera 10 includes a call button 101 for a visitor to perform a call operation, a microphone 102 for a visitor to talk to a resident, a speaker 103, a camera 104 for imaging the visitor, LED 106 for illuminating visitors at low illumination, hybrid circuit 107 for performing two-wire to four-wire conversion to realize a voice call, and modulation for modulating a video signal captured by the camera 104 into a signal suitable for transmission A circuit 108, a slave CPU 109 for controlling each part of the entrance slave, a data transmission circuit 110 for communicating with the living room master 20, and an electromotive force to generate power when receiving light such as sunlight. First solar cell panel 111a, second solar cell panel 111b, third solar cell panel 111c, fourth solar cell panel 111d, and backflow prevention diode 112 From the electric double layer capacitor 113 for storing the generated electric energy, the charging circuit 114 for the electric double layer capacitor 113, the DC-DC converter 115 for converting the stored electric energy into a manageable DC voltage, and the transmission line 30 And an impedance upper circuit 116 for increasing the impedance of the power source.

  The first solar panel 111a is at the top of the slave unit, the second solar panel 111b is at the front of the slave unit, the third solar panel 111c is at the right side of the slave unit, and the fourth solar cell panel 111d is at the left side of the slave unit. Respectively.

The first function of the first to fourth solar battery panels 111a to 111d is to cover the power of the slave unit with camera 10 and the standby power of the living room base unit 20 by generating power with sunlight. It is.

The second function is to calculate the incident direction of sunlight by the slave CPU 109 based on the power generation amount of each solar cell panel during the interphone operation, and judge it together with the state of the subject, and at the time of backlight or low illuminance Make corrections.
As for the third function, during intercom operation, the slave unit CPU 109 calculates the power generation amount of each solar cell panel provided with a color filter and makes a judgment together with the state of the subject to correct the white balance. .

  The room master 20 includes a response button 201 for responding to a visitor's call, a microphone 202 and a speaker 203 for performing a call, and a hybrid circuit for performing a two-wire / four-wire conversion for realizing a voice call. 205, a monitor 204 for displaying a visitor, a demodulation circuit 206 for demodulating a video signal, a detection of a response button 201, and a parent device CPU 207 for performing various controls of the living room parent device 20, a camera In order to increase the impedance of the power source as seen from the transmission line 30, the data transmission circuit 208 for performing communication with the attached front door unit 10, the bridge circuit 209 that becomes non-polarized when receiving power from the front door 10 with camera Impedance upper circuit 210 and an AC-DC power supply module 211 for covering the power of the living room master unit 20 during operation.

The master CPU 207 of the living room master 20 corrects the brightness and hue of the monitor 204 from the data of the first to fourth solar battery panels 111a to 111d transmitted from the slave CPU 109 of the camera-equipped entrance slave 10. Do.
The operation of the intercom apparatus configured as described above will be described below.
The first to fourth solar battery panels 111 a to 111 d installed in the entrance cordless handset 10 generate power by obtaining sunlight and are stored in the charging circuit 114. The power generation amount in each of the four solar battery panels is measured by the slave CPU 109, and the illuminance around the entrance slave 10 is measured based on the measurement result. Thus, it becomes possible to identify the incident direction of sunlight by installing a plurality of solar battery panels on the entrance cordless handset 10.

In this state, when the visitor operates the call button 101 of the front door slave 10 to call the resident, the slave CPU 109 detects this, and sends a call signal via the data transmission circuit 110 and the transmission line 30. To the machine 20. In the room master 20, the master CPU 207 receives the data via the data transmission circuit 208 and controls to emit a ringing tone from the speaker 203.
Further, the camera 104 is driven by the control of the slave CPU 109 of the entrance slave 10, and the modulation circuit 108 modulates the video signal captured by the camera 104 into a signal suitable for transmission. The modulated video signal is transmitted to the room master 20 via the transmission line 30, and the video signal is demodulated by the demodulation circuit 206 and output to the monitor 204.

At this time, the exposure amount of the camera 104 is corrected based on the illuminance in each solar cell panel direction measured by the slave CPU 109.
In addition, when 1st-4th solar cell panel 111a-d has a color filter, subunit | mobile_unit CPU109 can measure the electric power generation amount by the light of a specific wavelength, and this electric power generation amount Thus, the white balance of the camera 104 can be corrected.
Since the image corrected in this way is displayed on the monitor 204 of the room master unit 20, when a resident who has confirmed the visitor's image operates the response button 201, the base unit CPU 207 that detected the operation displays the entrance CPU 207. A communication path with the child device 10 is formed. As a result, it is possible to make a call between the microphone 102 and the speaker 103 of the entrance cordless handset 10 and the microphone 202 and the speaker 203 of the room base unit.

It is to be noted that the power of the entrance cordless handset 10 and the room base unit 20 is covered during standby, and the power from the AC-DC power supply module 211 of the room base unit 20 is covered during operation such as during a call or monitoring.
Here, in the present embodiment, an example in which a plurality of solar battery panels are used has been described. However, the present invention is not limited thereto, and the cells in the panel may be divided by a single panel.
In the present embodiment, four solar battery panels are arranged on the top, front, right side, and left side of the door unit 10, but the number is not limited to four. The arrangement of the solar cell panel is not limited to the above arrangement, and may be changed depending on the installation environment.
In the present embodiment, an example in which correction is performed on the camera side that performs imaging has been described.

DESCRIPTION OF SYMBOLS 1 ... Interphone apparatus 10 ... Entrance child device with a camera 109 ... Child device CPU (electric energy measuring means, illuminance measuring means)
111a-111d ... solar cell panel 20 ... living room master

Claims (5)

A camera with a camera for capturing a visitor and a camera with a function of calling a resident, and a monitor that is used in connection with the camera with a camera and displays the camera of the camera with a camera And an intercom apparatus having a living room base unit having a function of responding to a call from the camera entrance unit,
The camera-equipped entrance cordless handset includes a solar cell panel for power generation, and an electric energy measuring unit that measures the electric energy generated by the solar cell panel, and the generated electric energy measured by the electric energy measuring unit An intercom apparatus comprising illuminance measuring means for measuring the illuminance around the entrance unit with camera. 2. The intercom apparatus according to claim 1, wherein the entrance unit with a camera includes an exposure amount correction unit that corrects an exposure amount of the camera based on illuminance measured by the illuminance measurement unit. The solar cell panel includes a color filter, and a specific wavelength photopower amount measuring unit that measures a generated power amount by light of a specific wavelength by the color filter, and a generated power amount measured by the specific wavelength photopower amount measuring unit. 2. The intercom apparatus according to claim 1, further comprising white balance correction means for correcting white balance of the camera. The entrance unit with a camera includes a plurality of solar cell panels, the solar cell panels are installed in two or more directions of the entrance unit with the camera, and each of the solar cell panels measured by the electric energy measuring unit is provided. 2. The intercom apparatus according to claim 1, further comprising sunlight incident direction measuring means for measuring the incident direction of sunlight based on the amount of generated power. The said entrance child machine with a camera was provided with the means to correct | amend the exposure amount of the said camera based on the incident direction of the sunlight measured by the said sunlight incident direction measurement means. Intercom device.

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