KR20000014792A - Important scene select search method at a vcr recording of an observation area - Google Patents

Abstract

PURPOSE: A method is provided to search desired scenes among contents recorded during a long time quickly. CONSTITUTION: The method for searching an important scene of a video cassette recorder comprises the steps of: judging an occurrence of an abnormal situation when an entrance and exit of an outsider is sensed at an observation area, such as a bank or a parking area, in a record mode of a video cassette recorder; and after storing start and end count values of the abnormal situation to a memory part, displaying the number of the abnormal situations on an OSD screen when the recording is ended, wherein a period corresponding to the start and end count values of the abnormal situation stored in the memory part is displayed in a reproducing mode, and the other period is skipped until a next start and end count value is detected.

Description

How to search for important scenes when recording VSI of surveillance zone

The present invention relates to a search method for reproducing only important scenes when playing a video tape recorded for a long time. In particular, an abnormal situation such as an outsider enters and exits when a long time recording of a place requiring surveillance such as a parking lot or a bank occurs. If the memory is stored under the control of VSI Micom, the counter starts and stops, and the memory is stored in the memory. When the recording ends and the tape is searched again, only the part with the memorized counter hour / end value is played and the rest is skipped. Even when recording for a long time, it is possible to quickly search only important scenes without spending much time.

Conventionally, the area that needs surveillance such as parking lot or bank is recorded by CCTV, then recorded on video tape using VSI, and the recorded tape is replayed or searched to check the access status of outsiders entering and exiting the surveillance area. I used to look.

At this time, it is possible to record up to 2 hours to 960 hours with the recording video tape used. If you play the recorded video tape again to watch all the recording scenes, up to 960 hours are recorded. I had to watch. Of course, you can see through VSI's search function, but searching through search function will take considerable time.

As described above, when looking at the recording contents by replaying or searching the video tape recorded for a long time in a surveillance zone with VSI, there was a problem that the search time is too long because the entire tape section has to be replayed or searched.

Therefore, in order to solve the above problems, when an abnormality such as an outsider enters or exits when recording a place requiring surveillance for a long time such as a parking lot, a bank, etc. occurs, the occurrence of an abnormality starts under the control of VSI Micom. By recording the end counter value in the memory unit, when the recording is finished and the tape is searched again, only the part with the memorized counter hour / end value is played and the remaining part is skipped so that it does not take much time even for long time recording. The purpose of the present invention is to provide a method for selecting important scenes when recording a VSI recording of a surveillance zone for quick navigation.

1 is a system circuit block diagram for practicing the present invention;

Figure 2a is a flow chart showing the processing thereof when an abnormal situation occurs according to the present invention,

2B is a flowchart illustrating a search process according to the present invention.

** Explanation of symbols for the main parts of the drawings **

1: CCTV part 2: human body sensor

3: key input section 4: VSI MICOM

5: memory part 6: deck part

7: Audio signal processor 8: Video signal processor

9: Odes d'Ivoire

In order to achieve the above object, the present invention provides a method of recording in double speed mode when the tape recording setting time set by the user in the recording mode of VSI is greater than the standard time of the tape, and then proceeding with the normal recording mode, and then monitoring. When a human body is detected in the zone and an abnormal situation occurs, an abnormality occurrence processing step of counting the abnormality counter at the beginning and the end of each occurrence of the abnormality and storing the time / end value of the counter, and then the recording end time periodically Determining whether or not the recording end time arrives by displaying the number of occurrences of the abnormal situation on the OSD screen, rewinding the tape to maintain the standby state, and when the recording end time has not arrived, executing the abnormality occurrence processing step When the search mode is selected in the standby state, the search mode is executed. When the abnormality counter start value stored in the memory unit is detected, executing and stopping the playback mode until the abnormality counter end value is detected; and detecting the next abnormality counter start value when the playback mode is stopped at the step. Executing the skip mode until the skip mode is executed; and if the abnormal counter start value is detected when the skip mode is executed, the playback mode is not executed again.

The method may further include muting the audio signal when recording is performed in the double speed mode.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a system block diagram for carrying out a method for searching for an important scene during video recording of a surveillance zone according to the present invention.

That is, the system is a CCTV unit (1) for photographing the monitoring area, such as a parking lot or a bank, a human body sensor unit (2) installed near the CCTV unit (1) to detect the human body, recording mode, search A variety of input signals are input from the key input unit 3 to which various function keys such as modes are input, and the key input unit 3 and the human body sensor 2 to determine abnormal conditions every time a human body is detected. A control signal of the VSI microcomputer 4 for storing the hour / end value, the memory unit 5 for storing the abnormal state counter time / jong value under the control of the VSI microcomputer 4, and the VSI microcom 4 And a deck unit 6, an audio / video signal processing unit 7 and 8, an OSD unit 9, and the like, which are operated by being applied thereto.

An embodiment of the present invention implemented by the VSI system having the above configuration will be described in more detail with reference to FIGS. 2A and 2B.

FIG. 2A illustrates a process of storing the counter time / end value in the memory unit 5 when an abnormality occurs under the control of the VMI microcomputer 4 when an abnormality occurs, and FIG. 2B illustrates a process of searching for a recorded tape.

Some areas, such as banks or parking lots, need to be monitored. Usually, videos recorded by CCTV unit (1) are recorded on video tape using VSI system to monitor the access status of outsiders.

At this time, the reason for recording with a video tape is mainly to monitor the access state of the outsider, so that there is no unnecessary recording when there is no outsider. Therefore, when searching for recorded content by replaying the recorded video tape again, the search time is required to reproduce unnecessary recorded content. Therefore, the present invention is applied to solve such a problem as follows.

That is, when the user sets the recording mode through the key input unit 3 of the remote control or VSI set side, the VMI microcom 4 checks whether the current execution mode is the recording mode (step 100), and checks the recording mode. When the human body sensor 2 is operated (step 101), a predetermined input signal is applied every time the human body is detected. Further, it is subsequently judged whether the recording setting time X set by the current user is larger than the standard time T of the tape loaded in the deck portion (step 102).

At this time, if it is determined that the recording set time X set by the user is larger than the standard time T of the tape loaded in the deck unit 5, recording is performed in the double speed mode (step 103). A mute step (step 104) may be included to eliminate unnecessary noise during playback of the tape.

On the other hand, if it is determined that the set recording set time X is less than or equal to the standard time T of the tape loaded in the deck unit 6, recording starts normally in the audio signal recording state (step 105).

Therefore, the video recorded through the CCTV unit 1 is recorded on the video tape, when an outsider enters and exits during the recording process, the human body sensor 2 installed near the CCTV unit 1 detects this and inputs a predetermined input. The signal is sent to VSI microcomputer (4).

An infrared sensor or the like is used as the human body sensor 2, and in this case, an outsider may be detected through a sensing means capable of sensing that the door is opened and closed instead of the infrared sensor.

In any case, the VSI microcomputer 4 which has received the human body sensor input signal from the human body sensor 2 determines that a current situation has occurred (step 106), and starts the abnormality counter (step 107).

In addition, when the outsider leaves the monitoring area, the human body sensor 2 applies a predetermined input signal to the VSI microcomputer 4, whereby the microcomputer 4 determines that the abnormal situation has ended (step 108).

The abnormality counter time / end value and the number of times of occurrence of the abnormality event determined by the microcomputer 4 are stored in the memory 5 each time the abnormality occurs (step 109).

Of course, in this case, when the human body detecting sensor (2) detects the human body to automatically sound an alarm, such that the user can check the entrance of the outsider by sound.

When the above process is completed, the VSI microcomputer 4 continuously determines whether the recording end time has arrived periodically (step 110). At this time, if the recording end time has not arrived, the process returns to step 106 again and the recording is performed. When the end time arrives, a control signal is sent to the OSD 8 to display the number of abnormal occurrences on the OSD screen (step 111).

When the recording is completed, the VSI microcomputer 4 sends a control signal to the deck unit 6 to rewind the tape and maintain the standby state (step 112).

When the user sets the search mode through the key input unit 3 on the remote control or VSI set in the standby state, the VMI microcomputer 4 executes the search mode after confirming this (steps 113 and 114).

In addition, the VMI microcomputer 4 determines whether or not the abnormality counter start value stored in the memory unit 5 has been detected when the search mode is executed (step 115). Control signal is sent to the playback mode until the counter end value is detected (steps 116 and 117).

However, as soon as the abnormality counter end value is detected, the playback mode is immediately stopped and a control signal is sent to the deck unit 6 to execute the skip mode until the next abnormality counter start value is detected (step 119).

During the skip mode execution, it is again determined whether or not the abnormal counter start value is detected. If the counter start value is detected, the process returns to step 116. If not, the skip mode is executed to the end of the tape (steps 120 and 121).

The method of selecting important scenes when recording a VSI recording of a surveillance zone according to the present invention as described above includes VSI MICOM when an abnormal situation such as an outsider enters or exits when recording a place requiring surveillance for a long time such as a parking lot or a bank (4). By storing the start and end of the occurrence of an abnormal event counter in the memory unit 5 under the control of), only the part having the stored counter time / end value is reproduced when the recording is ended and the tape is searched again, and the remaining part is skipped. Even when recording for a long time, it is possible to quickly search only important scenes without spending much time.

Claims (2)

If the tape recording setup time set by the user in the recording mode of VSIal that records a certain surveillance zone with the video camera is recorded, it is recorded in the double speed mode. Then, when a human body is detected in the monitoring area and an abnormal situation occurs, the abnormality counter is counted each time at the beginning and the end of the abnormal situation and the time / end value of the counter is stored. When the recording end time arrives by determining whether the time has arrived, the number of occurrences of the abnormality is displayed on the OS screen, the tape is rewound, the standby state is maintained, and when the recording end time has not been reached, the above abnormality occurrence processing step is executed. And searching when the search mode is selected in the standby state. If the abnormality counter start value stored in the memory unit is detected at this time, executing the regeneration mode until the abnormality counter end value is detected, and stopping the operation; Executing the skip mode until the counter start value is detected; and executing the play mode again when the abnormal counter start value is detected during the skip mode execution; How to select important scenes when recording VSI of the surveillance zone. The method of claim 1, further comprising muting the audio signal when recording is performed in the double speed mode.