JP2001202578A - Security surveillance camera system - Google Patents

Abstract

(57) [Summary] [Problem] When an abnormality is detected by a sensor, a call signal is sent from a camera surveillance slave to a camera surveillance master, and even if a ringing tone sounds at the camera surveillance master, a person is present near the camera surveillance master. If you are not there, you will not be able to respond and it will not be useful for crime prevention. SOLUTION: Camera monitoring slave unit 4 and camera monitoring master unit 10
Has a function to set a password,
Is the password transmitted from the camera monitoring base unit 10 by the control circuit 8 before transmitting the video signal and the audio signal to the camera monitoring base unit 10 coincide with the password set in the camera monitoring slave unit 4? And the control circuit 3 controls whether or not to transmit a video signal and an audio signal. The control circuit 3 controls the camera monitor slave unit 4, the first camera monitoring master unit 10, and the second camera monitoring master unit 23. , Has a function to set a PIN,
When transmitting the video and audio of the camera 1 of the camera monitoring slave unit 4 to the camera monitoring base unit 10, the security and privacy are maintained because the transmission is controlled after confirming that the passwords match.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security surveillance camera system for monitoring images and sounds of a camera surveillance unit connected to a camera with a microphone from a remote place using a monitor.

[0002]

2. Description of the Related Art A conventional security surveillance camera system uses a surveillance camera to photograph a place where surveillance is required, and photographs the image on a monitor at a remote place, and a surveillance person monitors the crime while watching the monitor. Was something.

[0003] Alternatively, an observer does not always monitor on a monitor, but records an image taken by a surveillance camera on a videotape, and plays back the videotape later to help security.

[0004] In this case, however, it is a heavy burden for the observer to constantly monitor the observer.

[0005] In addition, in the case of always recording on a video tape, the recording time of the video tape is limited, so that it is necessary to frequently change the video tape.

Therefore, there is a method in which a sensor is installed at a place where the surveillance camera monitors, and the video of the surveillance camera is recorded on a video tape only when an abnormality is detected so that the video tape is not wasted.

[0007] However, such security monitoring camera systems are expensive to introduce, so that they can be introduced in large-scale facilities and the like, but are widely used in small shops, offices, and general private homes. Was difficult.

Next, when monitoring a small place at low cost, there is the following system configuration, and the configuration of this system is shown in FIG.

In FIG. 2, 1 is a camera with a microphone, 2 is a sensor installed near the camera 1 for detecting abnormalities, and 3 is a device for modulating and encoding video and audio signals input from the camera 1. And a control circuit for transmitting a calling signal when an abnormality is detected by the sensor 2. Reference numeral 4 denotes a camera monitor unit constituted by these components.

Reference numeral 10 denotes a camera monitoring master unit, which is connected to the camera monitoring slave unit 4 via a signal line 9.

The camera monitoring master unit 10 comprises the following blocks.

Reference numeral 5 denotes a monitor for displaying an image of the camera 1, reference numeral 7 denotes a speaker that emits a ringing tone when a voice picked up by the microphone of the camera 1 and a calling signal from the camera monitoring slave unit 4 are input, and reference numeral 6 denotes a speaker from the speaker 7. A response switch operated when a ringing tone is heard.

Reference numeral 8 denotes a control circuit which decodes and demodulates a signal transmitted from the camera surveillance slave unit 4 and controls a ringing tone when a calling signal is input.

Next, the operation of the above configuration will be described.

In FIG. 2, when the sensor 2 detects an abnormality, the camera monitor slave unit 4 transmits a calling signal to the camera monitor master unit 10 via a signal line 9.

When detecting the calling signal, the control circuit 8 of the camera monitoring base unit 10 sounds a calling sound from the speaker 7. When a nearby person operates the response switch 6 by the ringing sound, the control circuit 8 causes the camera monitor
The demodulator decodes and decodes the signal transmitted from the camera 1 to display an image on the monitor 5, and also demodulates the audio picked up from the microphone of the camera 1 into an audio signal and listens to the speaker 7.

In this manner, the video from the camera 1 monitored when an abnormality occurs is displayed on the monitor 5, and the sound can be heard from the speaker, which is useful for crime prevention.

(See, for example, Japanese Utility Model Laid-Open No. 03-115472)

[0019]

However, in the conventional security monitoring camera system, when an abnormality is detected by a sensor, a calling signal is transmitted from the camera monitoring slave to the camera monitoring master, and the camera monitoring master generates a ringing tone. Although it sounds, there is a problem that it is not possible to respond unless there is a person near the camera monitoring base unit, and in such a case it is not useful for crime prevention.

[0020]

In order to solve the above-mentioned problems, a camera with a microphone and a sensor installed near the camera for detecting an abnormality are connected, and the video and audio signals inputted from the camera are connected. Controlling to transmit, and a camera surveillance slave provided with a control circuit that controls to transmit a call signal at the time of abnormality detection input from the sensor, and when a call signal transmitted from the camera surveillance slave is received, Output to the speaker to ring,
Further, when a response is performed by operating the connected response switch, a control circuit that controls so that the video transmitted from the camera is displayed on the monitor and the audio transmitted from the microphone attached to the camera is output to the speaker. The camera monitoring base unit and the camera monitoring base unit are connected to a telephone line, and when a response switch is not operated for a predetermined time in response to a call signal input from the camera monitoring base unit, a preset dial number is called. It sends the video signal and the audio signal transmitted from the camera surveillance slave unit to the dial destination by sending the signal to the line, calling the second camera surveillance master unit installed at another place, and responding to the second camera surveillance master unit. In a security surveillance camera system controlled by a control circuit to transmit, the camera surveillance slave unit and the camera surveillance master unit have a function of setting a password. Before transmitting the video signal and the audio signal to the camera monitoring master, the slave determines whether the password transmitted from the camera monitoring master by the control circuit matches the password set in the camera monitoring slave. The control circuit controls whether the video signal or the audio signal is transmitted.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, when an abnormality is detected by a sensor of a security monitoring camera system, a ringing signal is transmitted to a camera monitoring base unit to generate a ringing sound. If there are no people nearby,
Using a telephone line connected to the camera monitoring master, audio and video signals can be transferred to a second camera monitoring master installed at another location.

Also, in order to be able to periodically check whether or not the camera monitoring slave unit is functioning normally, a calling signal is transmitted from the camera monitoring slave unit without periodically detecting an abnormality. The operation test of the system can be performed by confirming the video and audio from the camera monitoring master unit.

Also, when the sensor of the camera monitoring slave detects an abnormality, a calling signal is transmitted to a signal line, a ringing tone sounds from a speaker of the first camera monitoring master unit connected to the signal line, and the user stays nearby. When the person operates the response switch and responds, the user can monitor the image and sound projected on the camera.

When there is no person on the first camera monitoring master device side, when there is no operation of the response switch for a certain period of time, the second camera monitoring master device installed at another location using the connected telephone line. By transferring the information to the camera, when a person on the side of the second camera surveillance master responds, it can be monitored by the video and audio projected on the camera.

The security monitoring camera system has a function of setting a password for the camera monitoring slave unit, the first camera monitoring master unit, and the second camera monitoring master unit. When transmitting video and audio to the camera monitoring base unit, security and privacy are maintained because transmission is controlled after confirming that the passwords match.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 1 is a block diagram of a security monitoring camera system showing the configuration of one embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a camera with a microphone;
Is a sensor for detecting a human body installed near the camera 1.

Reference numeral 3 denotes an input of a video signal of the camera 1 and an audio signal picked up by a microphone, modulation and encoding of the signal, and input of a signal of the sensor 2, and a call signal when the sensor 2 detects a human body. This is a control circuit for controlling transmission to the signal line 9.

The control circuit 3 has a function of setting a password by operating a built-in dip switch.

Reference numeral 4 denotes a camera surveillance cordless handset composed of these components.

Reference numeral 10 denotes a camera monitoring master unit, which is connected to the camera monitoring slave unit 4 via a signal line 9.

5 is a monitor for displaying the image of the camera 1,
Reference numeral 7 denotes a voice picked up from the microphone of the camera 1 and a speaker that sounds a ringing tone, 6 denotes a response switch, 8 denotes a control circuit, 1
Reference numeral 3 denotes a communication circuit, 14 denotes a telephone line, and 12 denotes a dial output circuit, which outputs a dial signal to the telephone line 14 under the control of the control circuit 8.

Reference numeral 11 denotes an incoming call detection circuit,
, And outputs it to the control circuit 8.

Reference numeral 24 denotes a telephone network, and reference numeral 23 denotes a second camera surveillance base unit.

A push button switch 22 is connected to the control circuit 18.

Next, the operation of the above configuration will be described.

First, when the camera monitoring master unit 10 responds to a call from the camera monitoring slave unit 4, the operation is as follows. When the sensor 2 of the camera monitoring slave unit 4 outputs a signal indicating that a human body has been detected to the control circuit 3, The control circuit 3 outputs a calling signal to the signal line 9.

The control circuit 8 of the camera monitoring base unit 10 is activated when a calling signal is input from the signal line 9, outputs a calling sound to the speaker 7, and sounds the speaker 7.

When a person nearby hears the ringing sound and operates a response switch 6, the control circuit 8 sends a response signal to the control circuit 3 of the camera monitor slave unit 4 to which the password set in the control circuit 8 is attached. return.

Upon receiving the response signal, the control circuit 3 compares the personal identification number set in the control circuit 3 with the personal identification number set in the control circuit 8 of the camera monitoring master unit 10 and, if they match with each other. The power of the camera 1 is turned on, the video signal and the audio signal output from the camera 1 are input, modulated, encoded, and transmitted to the signal line 9.

If the passwords do not match, the video signal and the audio signal output from the camera 1 are transmitted to the camera monitoring base unit 10.
Do not transmit to

The control circuit 8 decodes and demodulates the input signal from the camera monitor slave unit 4, and controls so that the video of the camera 1 is displayed on the monitor 5 and the sound is emitted from the speaker 7.

Therefore, monitoring the video and audio projected by the camera with microphone 1 by the camera monitoring base unit 10 can be useful for crime prevention.

Next, the operation when the second camera monitoring master unit 23 responds to the call from the camera monitoring slave unit 4 will be described. The control circuit transmits a signal indicating that the sensor 2 of the camera monitoring slave unit 4 has detected a human body. 3, the control circuit 3 outputs the signal
To output a call signal. The control circuit 8 of the camera monitoring base unit 10 is activated when a calling signal is input from the signal line 9, outputs a calling sound to the speaker 7, and sounds the speaker 7.

At this time, if no one is in the vicinity of the camera monitoring base unit 10 and the response switch 6 is not operated, the control circuit 8 stops outputting the ringing sound of the speaker 7 after a predetermined time, and sets the telephone line 14 in advance. The dialed number is output by controlling the dial output circuit 12.

When the control circuit 18 of the second camera monitoring master unit 23 installed on the telephone line 14 of the dial number detects the bell signal input from the telephone line 14 via the telephone network 24, , So that a ringing tone sounds from the speaker 17.

When a nearby person hears the ringing tone and operates the answering switch 16, the control circuit 18 controls the communication circuit 19 so as to close the DC circuit of the telephone line 14, so that the first camera monitoring A communication path with the master unit 10 is formed, so that mutual communication can be performed.

Next, when the first camera monitoring master unit 10 confirms that a communication path with the second camera monitoring master unit 23 has been formed, the control circuit 8 controls the second camera monitoring master unit 23. The data communication is performed so as to read the password set in the circuit 18, the obtained password is compared with the password set in the control circuit 8. A response signal with the password number set in the control circuit 8 is returned to the control circuit 3.

When receiving the response signal, the control circuit 3 compares the personal identification number set in the control circuit 3 with the personal identification number set in the control circuit 8 of the camera monitoring master unit 10 and, if they match with each other. The power of the camera 1 is turned on, the video signal and the audio signal output from the camera 1 are input, modulated, encoded, and transmitted to the signal line 9.

If the passwords do not match, the video signal and the audio signal output by the camera 1 are transmitted to the camera monitoring base unit 10.
Do not transmit to

The control circuit 8 of the camera surveillance base unit 10 transmits a signal input from the signal line 9 to the telephone line 1
4 through the communication circuit 19 of the second camera monitoring master unit 23 to the control circuit 18, and the control circuit 18 decodes and demodulates the input signal, and displays the image of the camera 1 on the monitor 15. Control is performed so that sound is emitted from the speaker 17.

Therefore, the second camera monitoring master unit 23 via the telephone line 14 monitors the video and audio projected by the camera 1 with the microphone of the camera monitoring slave unit 4 to be useful for crime prevention.

[0054]

As described above, according to the present invention, the camera monitoring slave unit is connected to the camera monitoring master unit via a signal line, and the second camera is connected to the camera monitoring master unit via a telephone line. When an abnormality is detected by a sensor connected to the monitoring base unit,
If a call is made to the camera monitoring base unit and the camera monitoring base unit is not present and does not respond, dial after a certain time using a telephone line and transfer the call of the camera monitoring base unit to the second camera monitoring base unit. Can be monitored without any trouble.

Also, a function is provided for setting a password for the camera surveillance slave unit, the first camera surveillance master unit, and the second camera surveillance master unit. When transmitting to the base unit, control is performed so that transmission is performed after confirming that the personal identification numbers match, so that security and privacy are maintained.

[Brief description of the drawings]

FIG. 1 is a block diagram of a security monitoring camera system showing one embodiment of the present invention.

FIG. 2 is a block diagram of a security monitoring camera system showing one embodiment of the related art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 camera 2 sensor 3 control circuit 4 camera monitoring slave 9 signal line 10 first camera monitoring master 14 telephone line 23 second camera monitoring master

Claims (1)

[Claims] 1. A camera (1) with a microphone and a sensor (2) installed near the camera (1) for detecting an abnormality are connected to transmit a video and audio signal input from the camera (1). Camera surveillance unit (4) including a control circuit (3) for controlling so as to transmit a call signal when an abnormality is detected by the sensor (2).
When receiving a call signal transmitted from the camera surveillance cordless handset (4), it outputs a ringing sound to a speaker (7) and responds by operating a connected response switch (6); A control circuit (8) for controlling the video transmitted from the camera (1) to be displayed on a monitor (5) and outputting the voice transmitted from a microphone attached to the camera (1) to a speaker (7); And a camera monitoring master unit (10) having a telephone connection (14) connected to a telephone line (14) and responding to a call signal input from the camera monitoring slave unit (4) for a predetermined time. (6)
Is not sent, a preset dial number is transmitted to the telephone line (14), the second camera monitoring master unit (23) installed in another location is called, and the second camera monitoring master unit (23) is called. ), The control circuit (8) controls the control circuit (8) to transmit the video signal and the audio signal transmitted from the camera surveillance slave unit (4) to the dial destination. 4) and the camera monitoring base unit (10) have a function of setting a personal identification number. The camera monitoring slave unit (4) controls the control circuit before transmitting the video signal and the audio signal to the camera monitoring base unit (10). (8) It is determined whether the password transmitted from the camera monitoring base unit (10) matches the password set in the camera monitoring slave unit (4), and whether the video signal or the audio signal is transmitted or not is determined. Is controlled by the control circuit (3). Camera System for security monitoring, characterized in that.