JPH05183904A - Front door monitor camera system - Google Patents

Abstract

PURPOSE:To display the image of the front door on the screen of a receiver by operating a front door monitor camera and the receiver when the front door of a multiple dwelling house, etc., is opened. CONSTITUTION:The open of the front door is detected by a door open detection part 4. This signal is inputted through a control part 8 to a camera control part 5, and the power source of a camera 1 is turned on to turn the camera to an operating state. A receiver operation detection part 6 outputs a signal when a receiver 2 is under operating. When the signal is outputted from the door open detection part 4 and no signal is outputted from the receiver operation detection part 6, a receiver control part 7 turns on the power source of the receiver 2. According to the signal from the door open detection part 4, the input of the receiver 2 is switched to a signal from the camera 1 through a receiver input switching part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an entrance surveillance camera system for a housing complex, etc., and when a front door is opened, an image taken by a television camera (hereinafter abbreviated as "camera") is received by a television receiver (hereinafter "receiver"). Abbreviated) related to what is displayed on the screen.

[0002]

2. Description of the Related Art In recent years, in an apartment building, a camera is installed at the common entrance to monitor the entering and exiting of the common entrance, etc., so that an image is displayed on the monitor of the common office and monitored. There is something I did. Many of these devices are designed to keep the camera and the image receiver in an operating state at all times in order to monitor entrances and exits, which has a drawback that the life of the device is shortened or power consumption is wasted. Another problem is that you need to keep an eye on the screen at all times because you do not know when and when people will come and go.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above point, and the entrance camera is operated only when the entrance door is opened, and an image of a person entering or exiting the entrance door is picked up and a video signal is output. However, if the power of the receiver installed in the administrator's room etc. for monitoring the entrance and exit of the entrance is turned off, after turning on the power, the input is switched to the signal from the entrance camera and displayed on the screen It provides the system.

[0004]

In order to solve the above-mentioned problems, the present invention provides a camera installed at an entrance or the like for picking up an image of a person entering or leaving the entrance door, and a receiver for displaying an image by the camera.
A door open detection unit that detects the opening of the entrance door, a camera control unit that controls the camera to an operating state by a signal from the door open detection unit, and operates the receiver by a signal from the door open detection unit A receiver control unit for controlling the state, a receiver input switching unit for switching the input of the receiver to a signal from the camera by a signal from the door opening detection unit, the door opening detection unit, a camera control unit, An entrance surveillance camera system including a receiver control unit and a control unit that controls a receiver input switching unit is provided.

[0005]

With the above construction, in the entrance surveillance camera system according to the present invention, when the entrance door is opened, the opening of the door is detected, and the camera installed at the entrance is controlled to the operating state based on this detection. Then, an image of the entrance / exit of the entrance door is taken. Then, if the power of the receiver installed in the manager's room or the like is off, the power is turned on, and then the input is switched to the signal from the entrance camera, and the entrance image is displayed on the screen.

[0006]

Embodiments of the entrance surveillance camera system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram of a main part of an embodiment of a front door surveillance camera system according to the present invention. In the figure, reference numeral 1 denotes a camera, which is installed near the front door and images a person or the like who enters or leaves the front door and outputs a video signal. A receiver 2 displays the image of the video signal from the camera 1 on the screen. A receiver input switching unit 3 switches the input of the receiver 2 to a video signal from the camera 1. Reference numeral 4 denotes a door opening detection unit that detects the opening of the entrance door. A camera control unit 5 controls the camera 1 in an operating state based on a signal from the door opening detection unit 4. Reference numeral 6 is a receiver operation detection unit, which is a receiver 2
Outputs a signal when is operating. A receiver control unit 7 turns on the power of the receiver when a signal is output from the door opening detector 4 and no signal is output from the receiver operation detector 6. A control unit 8 controls each unit of the apparatus. A storage unit 9 stores a control program of the apparatus.

Next, the operation of the entrance surveillance camera system according to the present invention will be described. When the entrance door of the common entrance opens,
The door open detector 4 detects this and outputs a signal. This signal is input to the camera control unit 5 via the control unit 8 and the camera 1
Turn on the power to control the operating state. On the other hand, the receiver operation detecting unit 6 detects the current flowing into the receiver 2 by the pickup coil of the adapter inserted into the power outlet of the receiver 2 in response to the signal from the door opening detector 4, A signal is output when the current value is a current at which the receiver 2 is determined to be operating, for example, 300 milliamperes or more.
The receiver control unit 7 turns on the power of the receiver 2 when no signal is output from the receiver operation detection unit 6 when the door open detection unit 4 outputs a signal. The signal from the door open detector 4 is also input to the receiver input switching unit 3 to switch the input of the receiver 2 to the video signal input from the camera 1. Alternatively, a specific sound may be output in response to a signal from the door opening detection unit 4, and the person entering and exiting may be monitored by sound and image.

In the above description, the video signal from the camera 1 is transmitted in the base band and is input to the video input terminal of the receiver 2 via the receiver input switching section 3. However, the video signal from the camera 1 Is converted into a high-frequency signal of an empty channel, and the receiver input switching unit 3 switches the receiving channel of the receiver 2 to the channel from the camera 1 by the signal from the door opening detector 4, and the image from the camera 1 is displayed on the screen. You may do so.

[0009]

As described above, according to the entrance surveillance camera system of the present invention, the entrance surveillance camera is activated only when the entrance door is opened, the person near the entrance door is imaged, and the manager Since the image is displayed on the screen of the receiver installed in the room etc., the power is turned off while there is no occupant, so power is not wasted and the life of the camera and receiver is prolonged. .. Also, when the power of the receiver is off, the receiver turns on and the image of the entrance is displayed only when there is a person coming in and going out, and further, a specific sound is output in response to the coming and going of people. Then, there is an advantage that the screen is only monitored at this time and it is not necessary to constantly monitor the screen. This system is particularly effective when the number of people coming in and going out is relatively small because the power is turned on and off according to the people coming in and going out as described above.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of a front door surveillance camera system according to the present invention.

[Explanation of symbols]

 1 Television Camera 2 Television Receiver 3 Receiver Input Switching Section 4 Door Open Detection Section 5 Camera Control Section 6 Receiver Operation Detection Section 7 Receiver Control Section 8 Control Section 9 Storage Section

Claims (1)

[Claims] 1. A television camera installed at an entrance or the like for capturing an image of a person entering or exiting an entrance door, a television receiver for displaying an image by the television camera, and a door opening detector for detecting opening of the entrance door. A camera control unit that controls the television camera in an operating state by a signal from the door opening detection unit, and a receiver control unit that controls the television receiver in an operating state by a signal from the door opening detection unit And a receiver input switching unit that switches an input of the television receiver to a signal from the television camera in response to a signal from the door opening detection unit, the door opening detection unit, a camera control unit, and a receiver control unit. An entrance surveillance camera system including a control unit that controls a receiver input switching unit.