JP3773346B2 - TV door phone device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a television door phone apparatus capable of making a phone call by mixing images between a camera entrance cordless handset installed at a front door or the like and a monitor indoor unit installed indoors.
[0002]
[Prior art]
Conventionally, as this type of TV door phone device, for example, a device described in JP-A-7-15723 is known.
[0003]
The television doorphone device of this publication is a television doorphone device composed of a child device installed at a front door or the like and a parent device installed in a house, a means for changing the amount of accumulated photocharge in the image sensor, An adjustment unit that automatically adjusts the amplification degree, a detection unit that detects the accumulated amount of the photoelectric charge and the amplification degree of the adjustment unit, and a call volume that is controlled according to a detection value detected by the detection unit And a control means, and the call volume between the slave unit and the master unit can be adjusted according to the brightness of the subject.
[Problems to be solved by the invention]
However, although the conventional TV door phone device has the effect of preventing the inconvenience of the neighborhood by reducing the call volume at night, it can restrict calls between the master unit and the slave unit at night. There is a problem that the functions are limited because operations such as setting the master and slave units installed in the room to be able to selectively receive calls during the day and night are not possible.
[0005]
The present invention has been made to remedy such conventional problems, and restricts calls between the camera entrance unit and the monitor indoor unit during the day and night, or is selective to monitor indoor units installed in a plurality of rooms. It is an object of the present invention to provide a multi-function TV door phone device that can be set to receive incoming calls.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises a camera entrance unit installed outdoors, a monitor indoor unit installed indoors, and a call line connecting the camera entrance unit and the monitor indoor unit. In the television door phone apparatus, the camera entrance cordless handset applies an illuminance measuring means for detecting outdoor illuminance, an impedance for changing a value according to the illuminance detected by the illuminance measuring means, and applying the impedance to the call line. Calling means for making a call, and the monitor indoor unit detects a change in impedance of the call line when called by the calling means to determine day and night, and a day / night determination means A day / night incoming call control means for controlling day / night incoming calls based on the determination result is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, there is provided a camera entrance unit installed outdoors, a monitor indoor unit installed indoors, and a call line connecting the camera entrance unit and the monitor indoor unit. In the television door phone apparatus, the camera entrance cordless handset has an illuminance measuring means for detecting outdoor illuminance, an impedance for changing a value according to the illuminance detected by the illuminance measuring means, and applying the impedance to the call line. Calling means for making a call, and the monitor indoor unit detects a change in impedance of the call line when called by the calling means to determine day and night, and the day / night determination means And day / night incoming call control means for controlling day / night incoming calls based on the determination result .
[0008]
With the above configuration, when a visitor presses the call button on the camera entrance cordless handset, the image captured by the camera unit is displayed on the display unit of the monitor indoor unit installed indoors. Yes.
[0009]
In addition, since the impedance whose value is changed according to the outdoor illuminance detected by the illuminance measuring means provided in the camera entrance unit is applied to the call line, the day / night determination means provided in the monitor indoor unit is connected to the impedance of the call line. It is possible to determine daytime and nighttime by detecting the change of daytime and nighttime, and by the daytime / nighttime incoming call control means, it is possible to perform control such as prohibiting a call between the camera entrance unit and the monitor indoor unit at nighttime.
[0012]
According to a second aspect of the present invention, the illuminance measurement means of the camera door unit detects an illuminance outdoors, a detection value detected by the illuminance measurement circuit, and a preset illuminance reference value a comparator circuit for outputting a deviation by comparing, in which a impedance conversion circuit for converting the deviation outputted from the comparator circuit to the impedance.
[0013]
With the above-described configuration, the outdoor illuminance detected by the illuminance measuring circuit and the preset illuminance reference value are compared by the comparison circuit to perform day / night determination, so that the day / night determination can be performed with high accuracy.
[0016]
According to a third aspect of the present invention, the monitor indoor unit is provided with illumination control means for turning on the illumination installed outdoors when the day / night determination means determines that it is nighttime.
[0017]
With the above configuration, visitors can be easily confirmed even at night, and in the case of a color television door phone device, a clear color image can be displayed on the display unit of the monitor indoor unit.
[0018]
According to a fourth aspect of the present invention, the monitor indoor unit includes day / night setting means that can selectively receive calls during the day and at night based on the determination by the day / night determination means .
[0019]
With the above configuration, settings such as setting an incoming call to a monitor indoor unit in another room during the day and night, or prohibiting a call between the night camera entrance unit and the monitor indoor unit can be easily performed.
[0020]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0021]
FIG. 1 shows a first embodiment of a TV door phone apparatus, wherein 1 is a camera entrance unit attached to a door such as an entrance, and 2 is a monitor indoor unit installed indoors. 1 and the monitor indoor unit 2 are connected by a call line 3.
[0022]
The camera entrance cordless handset 1 has a call button control unit 5 having a call button 4 that is operated when a visitor makes a call. The call button 4 of the call button control unit 5 includes an illuminance measurement circuit 6. Is connected.
[0023]
The illuminance measurement circuit 6 includes an illuminance sensor 7 for detecting the illuminance outside the door outside and an impedance 8 connected in series to the call button 4. Accordingly, the impedance 8 changes.
[0024]
The call button control unit 5 is connected to the call line 3 via the monitor indoor unit I / F circuit 9, and the monitor indoor unit I / F circuit 9 includes a camera unit 10 for imaging a visitor. A video of a visitor that is connected and imaged by the camera unit 10 is sent to the monitor indoor unit 2 installed indoors via the call line 3.
[0025]
On the other hand, the monitor indoor unit 2 has a camera entrance slave unit I / F circuit 11 for receiving a signal from the camera entrance slave unit 1 sent from the call line 3, and this camera entrance slave unit I / F. A signal received by the radio 11 is sent to the control unit 15 via the incoming impedance determination circuit 14, and the display unit 12 is connected, and an image captured by the camera unit 10 of the camera entrance device 1 is Are displayed on the display unit 12.
[0026]
Also to the control unit 15, during the day and a day and night between setting switch 16 for setting the night call, if the incoming signal from the camera entrance door station 1 is entered, the incoming ringing circuit for ringing a speaker 18 to inform an incoming call 17 and the illumination control circuit 19 which is connected to the output side of the lighting control circuit 19, lighting means 20 are connected that are installed outside the door.
[0027]
Next, the operation of the TV door phone apparatus configured as described above will be described. When the daytime / nighttime setting switch 16 in the monitor indoor unit 2 is set in advance to receive incoming calls during the daytime and at nighttime, the visitor visits the camera door 1. When the call button 4 is pressed, the impedance 8 changed by the illuminance detected by the illuminance sensor 7 is applied to the call line 3, and the video of the visitor imaged by the camera unit 10 is displayed on the monitor indoor unit I / F circuit 9 is sent to the camera door unit I / F circuit 11 of the monitor indoor unit 2 via the call line 3.
[0028]
The signal sent to the camera entrance slave I / F circuit 11 of the monitor indoor unit is sent to the control unit 15 via the incoming impedance judgment circuit 14, and the incoming impedance judgment circuit 14 is caused by a change in the impedance of the call line 3. It is determined whether it is daytime or nighttime, and the result is sent to the control unit 15.
[0029]
In response to the input signal, the control unit 15 first causes the incoming call ringing circuit 17 to ring the speaker 18 to notify the incoming call, and the display unit drive circuit 13 drives the display unit 12 to display the visitor image on the display unit 12. Is displayed.
[0030]
When a nighttime determination signal is input from the incoming impedance determination circuit 14, a control signal is sent to the illumination control circuit 19, and the illumination control circuit 19 turns on the illumination means 20 to illuminate the outside of the door.
[0031]
As a result, a person in the room can make a call with the visitor while watching the video of the visitor displayed on the display unit 12, and when using the color monitor indoor unit 2, the illumination means 20. As a result, the clear image of the visitor illuminated is displayed on the display unit 12 as a color image.
[0032]
If the day / night setting switch 16 is set so as not to receive calls at night, the control unit 15 of the monitor indoor unit 2 does not perform the above-described incoming operation even when the call button 4 of the night camera entrance unit 1 is pressed. Therefore, the speaker 18 does not ring, the video of the visitor is displayed on the display unit 12, and the illumination unit 20 is not turned on.
[0033]
On the other hand, FIG. 2 shows a second embodiment of the television door phone apparatus, which will be described next.
[0034]
The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0035]
In the second embodiment, the camera entrance cordless handset 1 is provided with an illuminance measurement circuit 22 for detecting the illuminance outside the room and a preset illuminance reference value 23, and the outdoor level detected by the illuminance measurement circuit 22 is detected. The comparison circuit 24 compares the illuminance with the illuminance reference value, and the comparison result is sent to the impedance conversion circuit 25, converted into an impedance corresponding to the comparison result, and then applied to the call line 3. It is like that.
[0036]
In the monitor indoor unit 2, an outdoor monitor button 26 is added to the control unit 15, and when the outdoor monitor button 26 is pressed, a control signal is output from the control circuit 15 to the illumination control circuit 19, and the outdoor monitor button A video of a visitor is displayed on the display unit 12 while 26 is pressed or at the same time as the illumination device 20 is turned on for a preset time.
[0037]
Next, the operation of the TV door phone apparatus configured as described above will be described. When the daytime / nighttime setting switch 16 in the monitor indoor unit 2 is set in advance to receive incoming calls during the daytime and at nighttime, the visitor visits the camera door 1. When the call button 4 is pressed, the illuminance measurement circuit 22 detects the outdoor illuminance and sends it to the comparison circuit 24.
[0038]
The comparison circuit 24 compares the illuminance detected by the illuminance measurement circuit 22 with a preset illuminance reference value 23 and outputs the deviation to the impedance conversion circuit 25.
[0039]
The impedance conversion circuit 25 converts the input deviation value into impedance and applies it to the call line 3 via the monitor indoor unit I / F circuit 3, and the visitor image captured by the camera unit 10 is displayed in the monitor indoor unit. The signal is sent from the I / F circuit 9 to the camera entrance slave unit I / F circuit 11 of the monitor indoor unit 2 via the call line 3.
[0040]
The signal sent to the camera entrance slave I / F circuit 11 of the monitor indoor unit 2 is sent to the control unit 15 via the incoming impedance determination circuit 14, and the incoming impedance determination circuit 14 changes the impedance of the call line 3. To determine whether it is daytime or nighttime, and sends the result to the control unit 15.
[0041]
In response to the input signal, the control unit 15 first causes the incoming call ringing circuit 17 to ring the speaker 18 to notify the incoming call, and the display unit drive circuit 13 drives the display unit 12 to display the visitor image on the display unit 12. Is displayed.
[0042]
When a nighttime determination signal is input from the incoming impedance determination circuit 14, a control signal is sent to the illumination control circuit 19, and the illumination control circuit 19 turns on the illumination means 20 to illuminate the outside of the door.
[0043]
As a result, a person in the room can make a call with the visitor while watching the video of the visitor displayed on the display unit 12, and when using the color monitor indoor unit 2, the illumination means 20. A clear image of the visitor illuminated by the above is displayed on the display unit 12 as a color image.
[0044]
Even when the ring tone does not sound, in the case of the outdoor monitor button 26 of the monitor indoor unit 2, the camera entrance unit 1 is operated, and the outdoor video captured by the camera unit 10 is displayed in the monitor room 3 via the call line 3. When the outdoor image is displayed on the display unit 12 and is determined to be nighttime due to a change in the impedance of the call line 3, a control signal is output from the control unit 15 to the illumination control circuit 19 and illuminated. The means 20 is turned on and the outside is illuminated.
[0045]
As a result, even when the call button 4 of the camera entrance cordless handset 1 is not pressed, the outdoor situation can be monitored by the video displayed on the display unit 12.
[0046]
If the day / night setting switch 16 is set so as not to receive calls at night, the control unit 15 of the monitor indoor unit 2 does not perform the above-described incoming operation even when the call button 4 of the night camera entrance unit 1 is pressed. Therefore, the speaker 18 does not ring, the video of the visitor is displayed on the display unit 12, and the illumination unit 20 is not turned on.
[0047]
In addition, a plurality of monitor indoor units 2 are installed in different rooms, and the monitor indoor unit 2 that is received during the daytime is set by the day / night setting switch 16, or the monitor indoor unit 2 that is received only at night is set, It is also possible to set the indoor unit 2 that receives calls during the day and night.
[0048]
On the other hand, FIG. 3 shows a third embodiment of the television door phone apparatus, which will be described next.
[0049]
The same parts as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0050]
In the third embodiment, the difference between the outdoor illuminance detected by the illuminance measurement circuit and the preset illuminance reference value 23 is sent from the comparison circuit 24 to the day / night determination circuit 28, and the determination of daytime and nighttime is performed based on the deviation. It is carried out.
[0051]
The determination result is sent to the carrier generation circuit 29 to generate a carrier having a constant frequency according to the determination result, and this carrier is sent from the monitor indoor unit I / F circuit 9 to the call line 3.
[0052]
On the monitor indoor unit 2 side, a carrier detection circuit 30 is provided for detecting a carrier from a signal sent from the camera entrance unit 1 to the camera entrance unit I / F circuit 11 via the call line 3. The carrier detection circuit 30 determines the day and night from the carrier frequency, and the result is sent to the control unit 15 together with the video signal.
[0053]
Next, the operation of the TV door phone apparatus configured as described above will be described. When the daytime / nighttime setting switch 16 in the monitor indoor unit 2 is set in advance to receive incoming calls during the daytime and nighttime, the visitor visits the camera door station 1. When the call button 4 is pressed, the illuminance measurement circuit 22 detects the outdoor illuminance and sends it to the comparison circuit 24.
[0054]
The comparison circuit 24 compares the illuminance detected by the illuminance measurement circuit 22 with a preset illuminance reference value 23 and sends the deviation to the day / night determination circuit 28.
[0055]
The day / night determination circuit 28 determines whether it is daytime or nighttime based on the input deviation, and sends the determination result to the carrier generation circuit 29.
[0056]
The carrier generation circuit 29 generates a carrier having a constant frequency according to the determination result, and the carrier is sent to the call line 3 via the monitor indoor unit I / F circuit 9 and the visitor imaged by the camera unit 10. Is sent to the monitor indoor unit I / F circuit 11.
[0057]
When the signal sent to the camera entrance slave unit I / F circuit 11 of the monitor indoor unit 2 is sent to the control unit 15 via the carrier detection circuit 30, the carrier detection circuit 30 detects the frequency of the carrier in the signal. Whether it is daytime or nighttime is determined from the frequency and output to the control unit 15.
[0058]
In response to the input signal, the control unit 15 first causes the incoming call ringing circuit 17 to ring the speaker 18 to notify the incoming call, and also drives the display unit 12 by the display unit driving circuit 13 to display the visitor on the display unit 12. Display video.
[0059]
When a nighttime determination signal is input from the carrier detection circuit 30, a control signal is sent to the illumination control circuit 19, and the illumination control circuit 19 turns on the illumination means 20 to illuminate the outside of the door.
[0060]
As a result, a person in the room can make a call with the visitor while watching the video of the visitor displayed on the display unit 12, and when using the color monitor indoor unit 2, the illumination means 20. As a result, the clear image of the visitor illuminated is displayed on the display unit 12 as a color image.
[0061]
Even when the ring tone does not sound, in the case of the outdoor monitor button 26 of the monitor indoor unit 2, the camera entrance unit 1 is operated, and the outdoor video captured by the camera unit 10 is displayed in the monitor room 3 via the call line 3. When the outdoor image is displayed on the display unit 12 and is determined to be nighttime due to a change in the impedance of the call line 3, a control signal is output from the control unit 15 to the illumination control circuit 19 and illuminated. The means 20 is turned on and the outside is illuminated.
[0062]
As a result, even when the call button 4 of the camera entrance cordless handset 1 is not pressed, the outdoor situation can be monitored by the video displayed on the display unit 12.
[0063]
If the day / night setting switch 16 is set so as not to receive calls at night, the control unit 15 of the monitor indoor unit 2 does not perform the above-described incoming operation even when the call button 4 of the night camera entrance unit 1 is pressed. Therefore, the speaker 18 does not ring, the video of the visitor is displayed on the display unit 12, and the illumination unit 20 is not turned on.
[0064]
In addition, a plurality of monitor indoor units 2 are installed in different rooms, and the monitor indoor unit 2 that is received during the daytime is set by the day / night setting switch 16, or the monitor indoor unit 2 that is received only at night is set, It is also possible to set the indoor unit 2 that receives calls during the day and night.
[0065]
As described in detail above, when the visitor presses the call button of the camera entrance cordless handset, the image captured by the camera unit is displayed on the display unit of the monitor indoor unit, and at the same time, the impedance of the call line changes. Because the lighting means installed on the outside of the door is turned on to illuminate the visitor at night, the video of the visitor can be displayed on the display unit even at night. .
[0066]
This makes it possible to make a call while confirming who the visitor is, and when a color television door phone device is used, a clear color image can be displayed on the display unit.
[0067]
The day / night setting switch allows you to receive calls during the day and night, allows you to receive only during the day, and allows you to selectively receive monitor indoor units installed in multiple rooms during the day and night. Therefore, the functions that can be used are greatly increased and the versatility is high as compared with the conventional TV intercom apparatus.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a television door phone device according to a first embodiment of the present invention. FIG. 2 is a block diagram showing a television door phone device according to a second embodiment of the invention. The block diagram which shows the television door phone apparatus which becomes 3rd Embodiment of this invention
DESCRIPTION OF SYMBOLS 1 Camera entrance handset 2 Monitor indoor unit 3 Call line 4 Call button 5 Call button control part 6 Illuminance measurement circuit 7 Illuminance sensor 8 Impedance 9 Monitor indoor unit I / F circuit 10 Camera part 11 Camera entrance child machine I / F circuit 12 Display unit 13 Display unit drive circuit 14 Incoming impedance determination circuit 15 Control unit 16 Day / night setting switch 17 Incoming ringing circuit 18 Speaker 19 Illumination control circuit 20 Illumination means 22 Illuminance measurement circuit 23 Illuminance reference value 24 Comparison circuit 25 Impedance conversion circuit 26 Outdoor Monitor button 28 Day / night determination circuit 29 Carrier generation circuit 30 Carrier detection circuit

Claims (4)

In a TV door phone device comprising a camera entrance unit installed outdoors, a monitor indoor unit installed indoors, and a call line connecting the camera entrance unit and the monitor indoor unit, the camera entrance unit Comprises illuminance measuring means for detecting outdoor illuminance, impedance for changing a value according to the illuminance detected by the illuminance measuring means, and calling means for applying the impedance to the call line to make a call. The monitor indoor unit detects day / night determination means for detecting day and night by detecting a change in impedance of the call line when called by the calling means, and receives incoming calls during the day and night based on the determination result of the day / night determination means. A television door phone device comprising day / night incoming call control means for controlling . The illuminance measurement means includes an illuminance measurement circuit that detects outdoor illuminance, a comparison circuit that compares a detection value detected by the illuminance measurement circuit with a preset illuminance reference value, and outputs a deviation, and the comparison circuit The television door phone device according to claim 1, further comprising an impedance conversion circuit that converts the deviation output from the output into impedance . The television door phone apparatus according to claim 1 or 2, wherein the monitor indoor unit includes an illumination control unit that lights an illumination installed outdoors when the day / night determination unit determines that the nighttime . 4. The monitor indoor unit according to claim 1, further comprising a day / night setting unit capable of selectively receiving calls during the day and at night based on the determination by the day / night determination unit. TV door phone device.

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