KR100281843B1 - How to record time information of security V - Google Patents

Abstract

The time information recording method of the security VCR is to record the video signal of the emergency situation input from the camera on the video tape when an emergency situation occurs in a surveillance system composed of a plurality of VCRs. If not set, the current time information request signal is transmitted to the other VCR by bidirectionally communicating with the other VCR, and the time response signal for the time information transmitted from the other VCR is received to operate the received time information in the recording mode. By recording the time information set at the same time as the VCR and the video signal for the emergency situation input from the camera, the time information is recorded when checking the information on the emergency situation later. You will be able to check.

Description

How to record time information of security V

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security video recorder (hereinafter referred to as a VCR), particularly when recording an external video and audio signal input from a camera when an emergency occurs in a surveillance system having a plurality of VCRs. When the current time is not set in the VCR that performs the recording operation, the time information recording method of the security VCR that receives the time information from another VCR and sets the time to record the external video signal and the set time information at the same time. It is about.

CCTV, a surveillance camera in general, has been able to develop many industries by using a television camera with the ability to see almost everything, and it is possible to watch almost every site without anyone to observe or supervise.

These CCTVs are used for traffic control, banking, building surveillance, remote education, video conferencing, seabed exploration, monitoring of dangerous industrial processes, and remote monitoring of military weapons. Such surveillance equipment is a so-called closed loop cable system that generally uses baseband video without using a modulated carrier, and can use both black and white or color screens. And, because there is no need to maintain broadcast quality, these video equipments are quite inexpensive and compact.

The surveillance camera is composed of a TV camera, a monitor capable of displaying a screen, and a recording device for recording an image captured by the TV camera. These cameras are quite small and can be installed anywhere. In general, a camera imaging device used in a surveillance camera is a CCD (Charge Coupled Device). They may be specially designed and used for specific purposes, such as infrared video. Infrared video can be used to detect the divergence of body temperature, allowing the intruder to be monitored even in dark nights.

However, even in banks such as banks these days, the function of the surveillance camera plays a big role in preventing accidents even though accidents such as robbery and theft are frequently occurring.

Hereinafter, a video / audio signal and time information recording apparatus of a general security VCR will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a video / audio signal and time information recording apparatus of a general security VCR. Referring to FIG. 1, a configuration of a sensing unit 10 for detecting a temperature of a human body or movement of an object is shown. And a video input unit 20 for inputting a captured external video signal, a voice input unit 30 for inputting an external audio signal, a display unit 50 for displaying an input video / audio signal, and It consists of a main VCR 40 for recording external video signals and audio signals, and an auxiliary VCR 60 for recording external video and audio signals input when both the video tape inserted in the main VCR 50 is recorded. do.

In this case, the primary VCR 40 and the auxiliary VCR 50 may include first and second A / V signal processing units for processing a display and recording of video and audio signals input from the video and audio input units 20 and 30. 43 and 63 and the external video and audio signals processed by the A / V signal processing units 43 and 63 so as to be recorded on the video tape according to the recording control signals of the first and second control units 41 and 61. OSD processing the current time information set in the first and second deck units 44 and 64 and the first and second control units 41 and 61 are output to the first and second A / V signal processing units 43 and 63, respectively. The first and second OSD processing units 42 and 62 are configured to simultaneously record an external video signal on a video tape and to display time information on the display unit 50. Here, the image input unit 20 is a surveillance camera, the display unit 50 is a TV monitor and a speaker. In addition, the detection unit 10 is composed of a plurality of detection sensors, such as an infrared sensor for sensing the temperature of the human body or a relay switch for detecting the opening or closing of the door in the building.

The operation of the video / audio signal and time information recording apparatus of the security VCR according to the prior art having such a configuration will be described.

First, the monitoring camera 20 and the voice input unit 30 are turned on and the main VCR 40 and the auxiliary VCR 60 are turned on. Here, a recording medium, that is, a video tape, is inserted into the first and second decks 44 and 64 of the primary VCR 40 and the secondary VCR 60, respectively.

Accordingly, the monitoring camera 20 captures an external video signal and inputs it to the main VCR 40, and also inputs the external audio signal input to the voice input unit 30 to the main VCR 40.

Subsequently, the sensing unit 10 detects the door opening through a door opening / closing detection relay switch mounted on the door or the like, which is emitted from the human body using the infrared sensor as described above.

As a result of sensing, when the temperature of the human body is sensed or the door is opened and the relay switch is turned on, that is, an emergency situation occurs, the sensing signal is applied to the controller 41.

When the detection signal is applied from the detection unit 10, the control unit 41 determines that the recording signal is a recording signal and starts recording on the A / V signal processing unit 43 and the deck unit 44 of the main VCR 40. The start control signal is output. Accordingly, the deck unit 44 switches the mode state to the recording mode, and the A / V signal processor 43 records and records the external video and audio signals input from the surveillance camera 20 and the audio input unit 30. Signal processing is performed to display the video tape inserted in the deck unit 44, and the video and audio signals are displayed on the TV monitor and the speaker, that is, the display unit 60, respectively. At this time, the controller 41 checks whether the current time is set, and if the current time is set, provides the set current time information to the OSD processor 42, and the provided current time information is displayed on the OSD by the OSD processor 42. After processing, if provided to the A / V signal processing unit 43, it is synthesized with the currently input external video signal to record the time information and the external video signal on the video tape of the deck unit 44 at the same time. In addition, the time information is displayed on the display unit 50 simultaneously with the external video signal.

However, when the current time is not set in the controller 41, only the external video signal currently input is recorded and displayed.

In this way, when all the external video signals are recorded on the video tape inserted in the deck unit 4 of the main VCR 40, that is, all the video signals are recorded in the video signal recording area of the video tape, and the external video signal is no longer present. If it is not possible to record the control unit 41 is to switch the deck unit 44 from the recording mode to the stop mode, to provide a recording control signal to the control unit 61 of the auxiliary VCR (60). Accordingly, the control unit 61 of the auxiliary VCR 60 provides the recording signal to the A / V signal processing unit 63 and the deck unit 64 according to the recording control signal provided from the control unit 41 of the main VCR 40. As described above, the recording and reproducing operation is performed in the same manner as the recording and display operation of the external video and audio signals in the main VCR 40. In addition, the control unit 61 of the auxiliary VCR 60 also checks whether the current time is set, and when the time is set, simultaneously records and displays the external video signal and the current time information.

However, when the current time is not set, only the external video signal and the audio signal are recorded and reproduced.

In the surveillance system as described above, text information recorded according to a user setting is limited. In particular, in case of a security VCR, the recording of an emergency occurrence time is more important than that for an emergency situation. However, when the user does not set the time, or when the display information (time information) setting is erased due to the end of backup time or other reset situation, only the video signal for the emergency situation is recorded. There is a problem in that it is not possible to determine when the emergency situation occurred when checking the emergency situation later.

Accordingly, the present invention has been made to solve the above-mentioned problems according to the prior art, an object of the present invention is to record an external video and audio signal input from the camera when an emergency occurs in a monitoring system having a plurality of VCRs If the current time is not set in the VCR that performs the current recording operation, the time information is recorded by the security VCR which receives the time information from another VCR and sets the time to record the external video signal and the set time information simultaneously. In providing a method.

In addition, another object of the present invention is to record and play time information by counting the time and applying the counted time at the same time to external video recording when the time is not set in all of the plurality of VCRs. The present invention provides a method of recording time information of a security VCR for counting and reproducing counted time information by counting time from an on time point.

1 is a block diagram showing a video / audio signal and time information recording apparatus of a general security V-seal

2 is a flowchart illustrating an operation of a method for recording time information of a security V-seam according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: detection unit 20: image input unit

30: voice input unit 40: main VCR

50: display unit 60: auxiliary VCR

Features of the time information recording method of the security VCR according to the present invention for achieving the above object is a video / audio of a surveillance system having a plurality of sensors for detecting external intrusion, a surveillance camera and a plurality of VCR sets In the signal and time information recording method, when a detection signal is input from the plurality of sensors, one of the plurality of VCR sets is turned on, and then external video and audio input through the surveillance camera and microphone. Recording the signal on one recording medium inserted into the VCR; Checking whether current time information is set in the VCR set operating in the recording mode during recording; When the current time information is not set in the corresponding VCR set, transmitting a request signal for the time information to another VCR set operated in association with the corresponding VCR set; The VCR set receiving the request signal reads the time information set in this set and transmits the time information to the requested VCR set, and the VCR set requesting the time information receives the transmitted time information and uses the received time information. Setting up; When the time is set, the step is to process the set time information after the OSD, and recording on the recording medium as the video signal input from the monitoring camera.

In addition, when the time information is not set in the VCR set requesting the time information, the present invention sets the last time from the time point at which the VCR set requesting time information is turned on to the present time as the time information in the set. The method further includes the step of OSD processing the time information to record on the recording medium as the video signal input from the monitoring camera.

Hereinafter, a preferred embodiment of a time information recording method of a security VCR according to the present invention will be described in detail with reference to FIGS. 1 and 2.

First, referring to FIG. 1, the operation of the surveillance camera 20 and the voice input unit 30 are turned on.

Accordingly, the surveillance camera 20 captures an external video signal and inputs it to the main VCR 40, and also inputs an external audio signal input to the voice input unit 30 to the main VCR 40. . At this time, the power supply of the main VCR 40 is turned off.

Subsequently, the sensing unit 10 detects an external intrusion through various sensors such as a door opening / closing detection relay switch mounted on the door or the temperature emitted from the human body using the infrared sensor as described above.

As a result of the detection, for example, when the temperature of the human body is sensed or the door is opened and the relay switch is turned on, a high or low signal is applied to the controller 41 in the main VCR 40. Here, the detection signal may be an artificial signal source.

When the detection signal is applied from the detection unit 10, that is, when the recording input signal is applied, the controller 41 controls a power supply unit (not shown) to turn on the power of the main VCR 40 and mounted therein. Time is counted by a counter (not shown), stored in a memory (not shown), and a recording start control signal is output to the A / V signal processing unit 43 and the deck unit 44 to start recording. Accordingly, the deck unit 44 switches the mode state to the recording mode, and the A / V signal processor 43 records and records the external video and audio signals input from the monitoring camera 20 and the audio input unit 30. By processing the signal so that it can be displayed and recorded on the video tape inserted in the deck unit 44, the video and audio signals are displayed on the TV monitor and the speaker, that is, the display unit 50.

At this time, the controller 41 checks whether the current time is set by the user. If the current time is set, the controller 41 processes the current time set in the same manner as before, and then inputs an external video signal. When the current time is not set, on the contrary, when the current time is not set, the current time request signal (time information request signal) is generated and transmitted to the control unit 61 of the auxiliary VCR 60.

The control unit 61 of the auxiliary VCR 60 checks whether the current time is set according to the time request signal transmitted from the control unit 41 of the main VCR 40, and if the current time is not set, the time signal. Null signal is transmitted to the control unit 41 of the main VCR 40. Therefore, the control unit 41 of the main VCR 40 checks the null signal and then supplies power to the main VCR 40. Time counted from when it is turned on, that is, the time counted from the counter stored in the memory in the controller 60 is inserted into the deck unit 44 along with the external image signal inputted by the OSD processing through the OSD processor 42. The external video signal is recorded along with the time information recorded on the video tape and OSD-processed on the display unit 50. At this time, the time information to be played back and displayed is displayed at the same time the current time and the elapsed time, where the current time is not set because it is played and recorded as 00 00 00 00 00 00 00 00 00 seconds.

However, when the current time is set in the control unit 61 of the auxiliary VCR 60, the current time data is transmitted to the control unit 41 of the main VCR 40.

Accordingly, the control unit 41 of the main VCR 40 transmits the time information transmitted from the control unit 61 of the subsidiary VCR 60 to the OSD processing unit 42 to perform OSD processing, and then displays the OSD processed time information A. The / V signal processor 43 is applied. That is, the external video signal and time information inputted are synthesized and recorded on the video tape of the deck unit 44 and displayed on the display unit 50 at the same time. In this case, the counted time, that is, the elapsed time and the present time, are simultaneously played back and recorded from the time when the VCR is turned on.

A time information recording method of the security VCR according to the present invention corresponding to such an operation will be described step by step with reference to FIG.

2 is an operation flowchart of a time information recording method of a security VCR according to the present invention.

First, it is determined whether a detection signal is applied from at least one sensor among the plurality of sensors (S101), that is, whether an emergency situation is generated according to the detection signal applied from the sensor, and as a result of the determination, among the plurality of sensors When a detection signal is applied from at least one sensor, it is determined that an emergency situation has occurred, and thus, the main VCR 40 is turned on, and the main VCR 40 is switched to a recording mode and counted at the same time (S102). ).

Subsequently, the external video signal input from the camera 20 is recorded on the body tape, and the playback is started on the display unit 50 (S103). At this time, it is determined whether the current time is set in the main VCR 40 at the same time as the start of recording (S104). If the current time is set as the result of the determination, after processing the set time (S110), the external input The video signal is synthesized with the video signal, recorded on the video tape, and displayed on the display unit 50 (S111).

However, if the current time is not set in the main VCR 40 in step S104, a time request signal is generated and transmitted to the auxiliary VCR 60 (S105). Therefore, the auxiliary VCR 60 transmits the time response signal to the main VCR 40 in accordance with the time request signal transmitted from the main VCR 40 (S106). Here, the time request signal and the time response signal are added with a division code that can be recognized by each VCR set.

In this way, it is determined whether the time response signal corresponding to the time request signal transmitted from the auxiliary VCR 50 is the null signal (S107), and if the time response signal is the null signal, that is, the current time also appears in the auxiliary VCR 50. When the signal is not set, the main VCR 40 is set to the main VCR 40 by applying the counted time since the power is turned on (S108), and the set counting time is OSD processed (S110). At the same time as the external video signal to be recorded on the video tape (S111). In addition, the time information and the video signal are simultaneously reproduced on the display unit 50. Here, the time information at the time of reproduction and recording is that the current time and the elapsed time are simultaneously reproduced and recorded. If only the elapsed time is recorded, the user may confuse the current time and the warning time when playing the recorded tape later, so that the current time and the elapsed time are recorded separately. For example, elapsed time 00; 00 and current time 00; 00 are divided and recorded.

Meanwhile, when the time response signal is time information instead of a null signal in step S107, that is, when a time signal is received against the current time set by setting the current time in the auxiliary VCR 60, the received time signal, that is, the current time information. After setting (S109), the set current time is OSD processed (S110) to simultaneously record the OSD-processed time information and the external video signal input from the camera 20 on the video tape (S111).

As a result, the time information recording method of the security VCR according to the present invention operates in a recording mode when an emergency situation occurs in a surveillance system composed of a plurality of VCRs and a video signal of an emergency situation input from a camera is recorded on a video tape. If the current time is not set in the current VCR, it communicates bidirectionally with other VCRs to transmit the current time information request signal to the other VCR, and receives the time response signal for the current time information transmitted from the other VCR. It is to set the time to the VCR operating in the recording mode and to record the set current time information at the same time with the video signal about the emergency input from the camera. In addition, when the current time is not set in other VCRs as well, and a null signal is received as the time response signal, the time counted while the VCR operating in the recording mode is turned on, that is, the VCR power is turned on. By applying the last time until this time is recorded on the video tape with the incoming video signal.

In the time information recording method of the security VCR according to the present invention as described above, when recording the video signal for the emergency situation when an emergency occurs, if the current time is not set to receive the current time from another VCR input By recording on the video tape with the external video signal, there is an advantage that can easily identify the time and place of the emergency since the time information is recorded when the emergency situation occurs later.

Claims (2)

In a video / audio signal and time information recording method of a surveillance system having a plurality of sensors for detecting external intrusion, a surveillance camera and a plurality of VCR sets, When a detection signal is input from the plurality of sensors, one VCR set of the plurality of VCR sets is turned on, and one recording medium having an external video and audio signal input through the surveillance camera and a microphone inserted into the VCR. Recording on; Checking whether current time information is set in the VCR set operating in the recording mode during recording; When the current time information is not set in the corresponding VCR set, transmitting a request signal for the time information to another VCR set operated in association with the corresponding VCR set; The VCR set receiving the request signal reads the time information set in this set and transmits the time information to the requested VCR set, and the VCR set requesting the time information receives the transmitted time information and uses the received time information. Setting up; If the time is set, the time information recording method of a security VCR, characterized in that the step of recording the recorded information on the recording medium, such as the video signal input from the surveillance camera after the OSD processing. The method of claim 1, wherein when time information is not set in the VCR set for which the time information has been requested, the time set from the time point at which the VCR set requesting the time information is turned on to the present time is set as time information in the set. And recording the recorded time information on a recording medium such as an image signal input from a surveillance camera by OSD processing the set time information.