KR100281761B1 - Searching device of surveillance tape - Google Patents

Abstract

The present invention relates to a video tape search apparatus, wherein the recording time is displayed during playback of a surveillance video tape used in a closed circuit, the playback time is calculated when the video tape is taken out, and the recording time according to the real time is stored. The present invention relates to a search apparatus for a surveillance recording tape that can shorten a working time when searching a video tape.

Accordingly, the monitoring device for recording tapes according to the present invention includes: a memory mounted on one side of the recording tape to store or read time data; A memory device comprising a serial transmission circuit connected to an output terminal of the memory and configured to serially transmit input / output data, the detection device being positioned to face the memory device at one side of the V-tape inserting port; An input / output unit for controlling time data to be input and output to the memory device through the detection device; A control unit reads the recording time of the video tape and totally controls the system from the count signal of the V-Cal, so that the recording time of the video tape used in the closed circuit is stored, regardless of rewinding or fast forwarding or playing the video tape. By allowing the time data according to the progress of the tape to be stored, it is not necessary to search the specific recording time zone of the video tape by repeating the playback, thereby achieving an effect of significantly reducing the search time.

Description

Searching device of surveillance tape

The present invention relates to a search apparatus for a video tape, and more particularly, a recording time is displayed during playback of a surveillance video tape used in a closed circuit, and a recording time according to real time is stored by calculating a playback time when a video tape is taken out. The present invention relates to a search apparatus for a recording tape for surveillance, which can shorten the working time when searching for a video tape.

In general, closed circuits are used for crime prevention purposes, and a recording system is used for this purpose. Therefore, the recording system is equipped with V-RA to perform recording by a predetermined time unit. Surveillance video tapes used for such VRs record discontinuous video signals in real time and are used to detect criminals from the recorded data.

Therefore, the video tape indicates the recording start time and the completion time of recording, and leaves the recording data for future events.

Since such recorded data is hundreds of hours of video signal stored in one tape, it is necessary to select a video tape to be searched and continuously look at the recording time together with the video data. For example, when a specific video tape is selected, the user plays it and checks the recording time through the played screen. If the currently played video is not a video of the time zone to be searched, the user is rewinding or fast forwarding a predetermined time through VRC. Therefore, after continuously implementing such a method, information of a desired time zone is obtained, and a user feels an inconvenience in using the system. In addition, the inconvenience that the search time is long with the above inconvenience is caused.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a search apparatus of a recording tape for monitoring, which reduces the search time of a surveillance video tape used in a closed circuit.

According to a first aspect of the present invention, there is provided a monitoring apparatus for a recording tape for monitoring, comprising: a memory for storing or reading time data input / output from a contact terminal having a contact terminal on one side of the recording tape; A memory device comprising a serial transmission circuit connected to an output terminal of the memory for serially transmitting input / output data is provided.

In addition, the search apparatus for the recording tape for monitoring according to a second aspect of the present invention for achieving the above object, the detection element is located so as to face the memory element on one side of the V-Tal insert; An input / output unit for controlling time data to be input and output to the memory device through the detection device; A controller configured to collectively control the system according to a user's key input and to read and display a recording time of a video tape; A timer connected to an input terminal of the controller to supply a predetermined time pulse; And a memory connected to an input / output terminal of the controller for temporarily storing data read from a memory device.

1 is a view showing the configuration of a video tape according to the present invention.

2 is a block diagram illustrating a memory device added to FIG. 1;

Figure 3 is a block diagram of the present invention configured inside the VR.

<Explanation of symbols for main parts of drawing>

10: VR tape 14: memory device

16 contact terminal 30 detection element

22: detection terminal 32: memory

34: serial transmission circuit 40: control unit

46: bus buffer 48: load detection unit

50: input and output unit 54: memory

56: key input unit

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

1 is a view showing the configuration of a video tape according to the present invention. FIG. 2 is a block diagram illustrating a memory device added to FIG. 1. Figure 3 is a block diagram of the present invention configured inside the VR. First, the monitoring device for a recording tape of FIG. 1 includes a memory device 14 provided at one side of a video tape and configured to store or read time data. The memory device 14 includes a contact terminal ( 16) data flows. In addition, when the video tape is inserted into the video tape insertion hole 62, a detection element 30 for making a signal contact with the contact terminal 16 is mounted. Both ends of the detection element 30 are provided with a detection terminal 22 and a bus 20.

Then, the data flowing in and out through the detection terminal 22 is supplied to the memory device 14, which is applied to the serial transmission circuit 34 as shown in FIG. The serial transmission circuit 34 is connected to the memory 32 to allow predetermined time data to be read or written.

In addition, the bus 20 connected to the detection element 30 is connected to a search system of a recording tape provided in the VRC 60, which will be described below with reference to FIG. 3.

First, a timer 52 signal for supplying time data is supplied to the controller 40 to perform synchronous control. The control unit performs a flow of the bus signal through the bus buffer 46 to transmit or receive time data to the detection element 30, and by the input / output unit 50 connected to the bus buffer 46. It is to be connected to the detection element (30).

The load detector 48 connected to one input terminal of the controller 40 detects the presence or absence of a signal of the memory device 16 applied from the input / output unit 50, and time data flowing from the memory device 16. The memory 54 is mounted to store the counted data and simultaneously count or reverse count it from the time stored through the timer 52.

Meanwhile, the controller 40 connects the display driver 42 and the LCD 44 to display the driving state of the current system.

Hereinafter, the operation of the present invention according to the above configuration will be described.

First, the memory device 14 always stores time data when recording or playing back the video tape 10. That is, data corresponding to the recording start time, the recording completion time, and the reproduction time are stored.

From this, when the user wants to look at the recording record of a specific time zone through the surveillance recording tape, the video tape 10 is inserted into the video tape insertion hole 62 of the video 60. Then, the video tape 10 is seated inside the system through a certain mechanism, and the memory device 14 is in contact with the detection device 30 in accordance with the transfer line. That is, the detection terminal 22 coincides with the contact terminal 16 of the memory element 14.

At this time, the load detection unit 48 determines whether or not contact with the contact terminal 16 by the detection element 30 via the input / output unit 50. This is determined from the load on the plurality of detection terminals 22, and the result is transmitted to the controller 40. Then, the controller 40 determines that the current video tape 10 is received.

Therefore, the controller 40 controls the bus direction so that data can be introduced through the bus buffer 46. The data read signal is output to the input / output terminal 50, and a pulse signal obtained by dividing a pulse signal of a predetermined cycle, that is, a pulse signal input from the timer 52 at a predetermined cycle, is output. Of course, the power supply is made through the detection terminal 22 at the same time.

Then, a plurality of control signals output through the input / output unit 50 are supplied to the memory device 14 through the detection device 30. This is a control signal is applied to the serial transmission circuit 34 and the memory 32 by the contact terminal 16, the read signal is transmitted to the memory 32, the pulse signal to the serial transmission circuit 34 Is sent.

Accordingly, the memory 32 receives the read signal and the pulse signal, and outputs time data stored in the memory 32, that is, time-recorded time data. The serial transmission circuit 34 then transmits the time data in serial communication. This signal is transmitted to the detection element 30 through a data bus and applied to the bus buffer 46 by the input / output unit 50.

Meanwhile, as the bus direction of the bus buffer 46 is read, that is, the data is input to the controller 40, the completed time data is input to the controller 40 as serial data. Then, the controller 40 recognizes the last time data stored in the video tape 10, and the data is temporarily stored in the memory 54.

At the same time, the time data recognized by the controller 40 is transmitted to the display driver 42 to be displayed through the LCD 44. The user sets the time zone to be searched through the display data through the key input unit 56.

If the time data recognized by the controller 40 is 20:50, if the user wants to search for an image signal of 15:27, input 17:40 through the key input unit 56 and rewind. Will be set. Then, the controller 40 recognizes time difference data corresponding to 5 hours and 33 minutes by calculating the time data currently input and the time data stored in the memory 54.

In addition, the controller 40 drives the mechanism of V-Cal (not shown) to perform a rewinding function and allows the head drum (not shown) to recognize the control signal of the video tape 10. This is to perform a continuous reverse counting by receiving the V-Cal count signal according to the progress of the video tape 10, and determines the progress of the tape regardless of the speed of the tape. From this, the controller 40 simultaneously performs reverse counting from the recording completion time data stored in the memory 54.

For example, a count signal, i.e., the number of image frames, recognized from the control signal of the video tape 10 is counted, and the counted data is reversed from the recording completion time data. If the number of frames is currently counting 30,000 frames, the 30,000 frames are counted as 1,000 seconds in consideration of playing 30 frames per second. The 1,000 seconds calculates a recording period during recording, and calculates the real time. Assuming that the recording period records one frame per 20 seconds, the 1,000 seconds are eventually 20,000 seconds of real time.

Therefore, 5.55 hours corresponding to 20,000 seconds are subtracted from the stored data of the memory 54. In addition, the result of the calculation is compared with a time difference corresponding to 15:27 inputted from the key input unit 56. Through the comparison result, the operation of the VRC is controlled to reproduce the video signal of the user's desired time zone. The LCD also displays the subtraction process of time.

If the control unit 40 determines that the time zone set by the user is the same as the calculation result, the VR system is stopped and the recorded image is reproduced. In this case, the real-time data, that is, the calculation result or the key input unit 56 is performed. By transmitting the time data input through the to the memory 54 to store it.

On the other hand, the 15:27 video signal is started to be reproduced. Similarly to the above process, the data corresponding to the time elapses is stored in the memory 54 during the playback. Therefore, the data stored in the memory 54 is to perform continuous counting at the time of rewinding or fast forwarding or reproducing the V-Cal. Through this process, when the user checks the video signal of the part to be searched and stops the V-Cal to draw the video tape 10, the control unit 40 detects it from the key input signal of the key input unit 56. do.

Therefore, the controller 40 reads the stored data of the memory 54, that is, the time data according to the time elapsed up to the present. Then, the bus direction of the bus buffer 46 is switched to the output side, and the write signal, the pulse signal, and the bus control signal are supplied to the input / output unit 50.

Then it is supplied to the memory device 14 through the detection element 30, which is transmitted to the serial transmission circuit 34 and the memory 32 to transmit the stored data of the memory 54. This is to transmit the current position time of the tape 12 to the memory 32 and to store the real time in the wound state of the tape 12.

Thereafter, the control unit 40 clears the stored data of the memory 54 and controls the VRC system so that the sound video tape 10 is drawn out.

As described above, the monitoring apparatus of the present invention is provided with a memory device comprising a memory for storing or reading time data and a serial transmission circuit connected to an output terminal of the memory for serial transmission of input and output data. And a detection device positioned to face the memory device at one side of the BC tape insertion port; An input / output unit for controlling time data to be input and output to the memory device through the detection device; The input / output unit controls the system according to a user's key input, and at the same time includes a control unit for reading and displaying the recording time of the video tape, thereby storing the recording time of the video tape used in the closed circuit, but the video tape Regardless of rewinding or fast-forwarding or playing back, the time data according to the progress of the tape is stored so that the specific recording time zone of the video tape is not searched by repetition of playback, thereby significantly reducing the search time.

Claims (1)

In the system for searching the surveillance tape used for the closed circuit, A memory 32 having a contact terminal on one side of the video tape 10 for recording and storing or reading time data input and output from the contact terminal; And A memory element 14 comprising a serial transmission circuit 34 connected to an output terminal of the memory 32 for serially transmitting input and output data; A detection tape (30) positioned at one side of the BC tape insertion port (62) so as to face the memory device (14); An input / output unit (50) mounted inside the V-Cal to control time data to be input and output to the memory device 14 through the detection device 30; A load detector 48 which detects an output terminal resistance of the detection element 30 to determine the presence or absence of the memory element 14 through the input / output unit 50; The total time control of the system according to the user's key input and the time of reading the recording time of the video tape and receiving the count signal of the V-Cal from the time taken into account the recording cycle of the winding state of the tape 12 according to the operation of the V-Cal. A controller 40 for performing counting and controlling data flowing into and out of the input / output unit 50; A timer 52 connected to an input terminal of the controller 40 to supply a predetermined time pulse; A memory 54 connected to an input / output terminal of the control unit 40 for temporarily storing data read from a memory device; And a key input unit (56) for inputting a time zone to be searched through the signal input terminal of the control unit (40).