KR100529138B1 - Time lapse recording/playing apparatus by using digital versatile disc loader and method thereof - Google Patents

Abstract

The present invention relates to a time lapse recording / playback apparatus and method using a DVD loader, and the disclosed time lapse recording apparatus sequentially transmits video signals photographed by a plurality of image capturing means by a predetermined time period for each image capturing means. A video loader which receives and outputs a video signal, which is output from the video signal processor in a recording mode, into a memory for each field or frame, and transfers the video signal loaded to the optical recording medium to a recording medium every predetermined time; And a control unit which controls the DVD loader to record video signals for each image capturing means output by the image signal processing unit by one field or frame image signal, and the advantages of the optical recording medium as compared with the conventional technology using the magnetic recording medium. High-definition reproduction of recorded signals is possible, and quick search during reproduction From, there is an advantage that the storage stability of the semi-permanent data improved.

Description

Time Lapse RECORDING / PLAYING APPARATUS BY USING DIGITAL VERSATILE DISC LOADER AND METHOD THEREOF}

The present invention relates to a time-lapse recording / playback apparatus and method, and more particularly, to a DVD loader intermittently recording an image signal on an optical recording medium for each field or frame and reproducing the image signal recorded on the optical recording medium. Versatile Disc Loader) and a time-lapse recording / playback apparatus and method.

In general, a number of surveillance cameras are installed around the environment to be monitored because it is impossible for a human being to monitor them in an environment where the surrounding environment must be constantly monitored, such as a financial institution or a public institution.

Then, the surrounding camera is photographed in real time using the installed surveillance camera, the recorded data is recorded on the recording medium, and the recorded data is reproduced through the recording / reproducing device to determine what happened to the environment to be monitored. To judge.

At this time, the monitoring of the surrounding environment is a task that needs to be performed for a long time, so when recording data recorded in real time through a camera to a recording medium in real time, there is a problem that the amount of data is huge. The time-lapse method, which is a method, is used to partially record recording data input from a camera onto a recording medium.

As shown in the block diagram of FIG. 1, the time-lapse recording / reproducing apparatus includes a video signal processor 20 for selectively outputting a video signal transmitted from an image capturing unit 10 including a plurality of cameras, and a video signal processor. A recording / playback unit 30 for recording the video signal output from the frame 20 on a recording medium and reproducing the recorded video signal; and the video signal processing unit 20 according to a user's selection through input means (not shown). And a controller 40 which controls the recording / playback unit 30 to record only one frame video signal of the video signals output from the control panel and controls the playback process of the video signal by the recording / playback unit 30. .

Although not shown in the drawing, in order to display text information indicating a location and time on a recording screen under the control of the controller 40, an on-screen display (OSD) text information is included in an image signal transmitted to the recording / playback section 30. The OSD processing unit is further included.

According to the related art, the recording and playback unit 30 records a video signal on a magnetic recording medium and reproduces the video signal recorded on the magnetic recording medium, and outputs it through a separate video output device such as a monitor or the like. Digital VCR (DVCR) is adopted and is commonly referred to as time lapse VCR and time lapse DVCR.

Looking at the recording / playback process of the time-lapse VCR configured as described above, first, the image signal processing unit 20 receives the image signal from the camera 1 of the image capturing unit 10, after a predetermined time elapses to switch to the camera 2 and the image Receiving a signal, while repeatedly performing this process, the video signal from each camera is sequentially received at a predetermined time interval and output.

The controller 40 controls the OSD processing unit to display text information on the recording screen so that the OSD text information is included in the video signal transmitted to the recording / playback unit 30, and records only one frame of the input video signal. It controls the progress of the cassette tape of the recording and playback section 30, and controls the recording and playback section 30 according to the user's selection through the input means to reproduce the video signal recorded on the cassette tape.

When a crime such as unauthorized intrusion occurs in a security facility equipped with a Time Lapse VCR, the Time Lapse VCR functions as a security system because the intruder's activity is recorded on the Time Lapse VCR's magnetic recording media so that the intruder can be easily identified. .

However, the time-lapse VCR and the time-lapse DVCR according to the prior art as described above are limited in storage capacity supported by a magnetic recording medium such as a cassette tape even when recording the recording data intermittently, so that for a long time recording In addition to the trouble of frequently changing magnetic recording media, there was also a problem in the preservation of data.

As described above, research efforts to solve the problems of the time-lapse recording / reproducing apparatus using the magnetic recording medium have been conducted in various angles, and the DVD loader using the optical recording medium as the recording / reproducing unit of the time-lapse recording / reproducing apparatus has been developed. It may be possible to find ways to adopt it.

By the way, it is difficult for the DVD loader to record the image taken by the image capturing unit in the recording mode to the disc for every field or frame. There is a task that cannot be supported.

The present invention has been proposed to solve the above problems. In the recording mode, the video signal is intermittently stored in the memory for each field or frame, and the video signal loaded in the memory every predetermined time is used as an optical recording medium. It is an object of the present invention to provide a time-lapse recording / reproducing apparatus and method using a DVD loader for recording and reproducing and reproducing and outputting image data recorded on an optical recording medium into a memory.

According to the present invention, compared with the conventional technology using the magnetic recording medium, the advantages of the optical recording medium enable high quality reproduction of the recording signal, fast search during reproduction, and semi-permanent improvement of data retention.

In accordance with one aspect of the present invention, a time-lapse recording apparatus includes: an image signal processing unit sequentially receiving and outputting image signals photographed by a plurality of image capturing means by predetermined time for each of the image capturing means; A DVD loader which loads an image signal output from the image signal processing unit in a recording mode in a first memory for each field or frame and transfers the image signal loaded in the first memory to an optical recording medium every predetermined time; And a controller configured to control the DVD loader to record image signals for each image capturing means output from the image signal processor by one field or frame image signal.

In another aspect of the present invention, a time-lapse recording method, in the time-lapse recording method for recording a video signal photographed by a plurality of video recording means for a predetermined time for each video recording means by a DVD loader, Loading the video signal into a memory for each field or frame in a recording mode; And transferring the image signal loaded in the memory to the optical recording medium every predetermined time.

There may be a plurality of embodiments of the present invention. Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings. This embodiment allows for a better understanding of the objects, features and advantages of the present invention.

FIG. 2 is a block diagram of a recording / playback section using a DVD loader in the time-lapse recording / playback apparatus according to the present invention, which is adopted as the recording / playback section 30 of FIG.

As shown in FIG. 1 and FIG. 2, the time-lapse recording / reproducing apparatus of the present invention includes an image capturing unit 10, an image signal processing unit 20, a recording / playing unit 30, and a controller 40. The recording / playback section 30 includes an A / D converter 101, a DVD loader 102, a D / A converter 103, a first memory 104, and a second memory 105. The following further comprises an OSD processing unit (not shown), the first memory 104 and the second memory 105 is implemented as a volatile memory (for example, RAM).

The image signal processing unit 20 sequentially receives and outputs the image signals photographed by a plurality of cameras, which are the image capturing means of the image capturing unit 10, for respective cameras according to control signals of the controller 40.

The A / D converter 101 of the recording and playback unit 30 converts the analog video signal output from the video signal processing unit 20 into a digital video signal and outputs the digital video signal.

The DVD loader 102 loads the video signal output from the A / D converter 101 in the recording mode into the first memory 104 (or the second memory 105) for each field or frame, and then firstly plays the first signal every predetermined time. The image signal recorded in the memory 104 (or the second memory 105) is transferred to an optical recording medium and recorded, and the optical signal is recorded in the first memory 104 (or the second memory 105). The video signal inputted through the A / D converter 101 during recording to the medium is loaded into the second memory 105 (or the first memory 104) for each field or frame, and then the second memory (for example, every predetermined time). An image signal loaded in 105 (or the first memory 104) is transferred to an optical recording medium and recorded. In other words, each time the first memory 104 and the second memory 105 transfer an image signal to an optical recording medium, their roles are replaced.

In addition, the DVD loader 102 loads the image data recorded on the optical recording medium into the first memory 104 and / or the second memory 105 in the playback mode, and then the first memory 104 and / or the second memory. The video signal loaded in the memory 105 is read and output to the D / A converter 103.

The D / A converter 103 converts a digital video signal input from the DVD loader 102 into an analog video signal and outputs the same to display an image through a separate video output device such as a monitor.

The control unit 40 records the video signals for each camera output from the video signal processing unit 20 by an arbitrary field or frame video signal according to a user's selection through input means (not shown). The DVD loader 102 is controlled, and the playback process of the video signal by the DVD loader 102 of the recording / playback unit 30 is controlled.

The OSD processor (not shown) displays OSD character information on an image signal transmitted to the recording and playback unit 30 to display character information indicating a position and time on a recording screen under the control of the controller 40. Provided including.

Operation of the recording mode and the playback mode by the time-lapse recording / playback apparatus according to the present invention configured as described above will be described in detail below with reference to FIGS. 1 to 4. Since the process of processing the image signal photographed by the image capturing unit 10 is a well-known technical idea, a detailed description thereof will be omitted, and the process is recorded on the optical recording medium by the time-lapse method under the control of the controller 40. And the process of playing again.

First, in the recording mode, the image signal processing unit 20 sequentially receives and outputs image signals photographed by a plurality of cameras constituting the image capturing unit 10 for each camera according to a control signal of the controller 40. The A / D converter 101 of the recording / playback unit 30 converts the analog video signal output from the video signal processing unit 20 into a digital video signal and outputs it (S201).

The DVD loader 102 loads the video signal output from the A / D converter 101 into the first memory 104 for each field or frame until a predetermined time elapses under the control of the control unit 40 (S202 to S202). S203).

When a predetermined time has elapsed, the video signal loaded in the first memory 104 is transferred to an optical recording medium and recorded (S204). The DVD loader 102 also uses the A / D converter 101 even during recording of the optical recording medium. ) Will input the video signal. Accordingly, the DVD loader 102 stores the video signal in the second memory 105 for each field or frame by multiprocessing even during recording of the optical recording medium (S203).

Subsequently, the recording process to the optical recording medium will be completed, and if a predetermined time elapses from the time when the image signal is loaded into the second memory 105, the image signal loaded into the second memory 105 is transferred to the optical recording medium and recorded. (S202, S204). In other words, each time the first memory 104 and the second memory 105 transfer an image signal to an optical recording medium, their roles are replaced.

Meanwhile, in the reproducing mode, the DVD loader 102 reads the image data recorded on the optical recording medium under the control of the controller 40 by the user's selection through the input means (not shown). And / or to the second memory 105. That is, the entire information of the optical recording medium is read and stored in the first memory 104 and / or the second memory 105 before outputting the video signal (S301 to S302).

Thereafter, an image signal loaded in the first memory 104 and / or the second memory 105 is read and output to the D / A converter 103, and the D / A converter 103 is a separate image such as a monitor. In order to display the image through the output device, the digital image signal input from the DVD loader 102 is converted into an analog image signal and output (S303).

In the above description, but limited to one embodiment of the present invention, it is obvious that the technology of the present invention can be easily modified by those skilled in the art.

For example, since the video signal recorded on the optical recording medium is stored as digital data, the search function can be reinforced by storing the data in a field or frame-by-frame file format, and include a motion recognition function only when the video signal is changed. It may be stored, or may be stored as compressed data in recording an image signal on the optical recording medium. In addition, the data conversion function by the A / D converter may be assigned to the video signal processor, and the data conversion function by the D / A converter may be assigned to a separate video output device. In addition, the first memory and the second memory may be implemented as one memory.

Such modified embodiments should be included in the technical spirit described in the claims of the present invention.

As described above, the present invention adopts a DVD loader and a memory method in a time-lapse recording / playback apparatus, and in the recording mode, the video signal is intermittently stored in the memory for each field or frame, and then the optical signal loaded in the memory every predetermined time The recording medium is transferred to a recording medium, and in the reproducing mode, image data recorded on the optical recording medium may be loaded into a memory and then reproduced and output.

Compared with the prior art using the magnetic recording medium, the present invention enables the high quality reproduction of the recording signal due to the advantages of the optical recording medium, the rapid search during the reproduction, and the semi-permanent improvement of data retention.

1 is a block diagram of a time-lapse recording / playback apparatus;

2 is a block diagram of a recording / playback unit in a time-lapse recording / playback apparatus according to the present invention;

3 is a flowchart of a recording mode by the time-lapse recording / playback apparatus according to the present invention;

4 is a flowchart of a playback mode by the time lapse recording / playback apparatus according to the present invention;

Claims (7)

delete An image signal processor for sequentially receiving and outputting image signals photographed by a plurality of image capturing means by predetermined time for each of the image capturing means; A DVD loader which loads an image signal output from the image signal processing unit into a first memory for each field or frame in a recording mode and transfers the image signal loaded in the first memory to an optical recording medium every predetermined time; A control unit which controls the DVD loader to record video signals for each image capturing means output by the video signal processor by one field or frame video signal; Including; The DVD loader loads an image signal input through the image signal processing unit into the second memory for each field or frame during recording of the optical recording medium, and then loads the image signal loaded into the second memory every predetermined time. Moving to and recording Time-lapse recording apparatus using a DVD loader, characterized in that. 3. The apparatus of claim 2, wherein the roles of the first memory and the second memory are interchanged each time the video signal is transferred to the optical recording medium. An image signal processor for sequentially receiving and outputting image signals photographed by a plurality of image capturing means by predetermined time for each of the image capturing means; A DVD loader which loads an image signal output from the image signal processing unit into a first memory for each field or frame in a recording mode and transfers the image signal loaded in the first memory to an optical recording medium every predetermined time; A control unit which controls the DVD loader to record video signals for each image capturing means output by the video signal processor by one field or frame video signal; Including; The DVD loader loads the image data recorded on the optical recording medium into the first memory in a playback mode, reads the image signal loaded in the first memory, and outputs the image signal to the image output apparatus. Time-lapse recording / playback device using a DVD loader characterized in that. delete In the time-lapse recording method for recording a video signal photographed by a plurality of video recording means to the optical recording medium by a predetermined time for each video recording means using a DVD loader, Loading the video signal into a memory for each field or frame in a recording mode; Transferring the image signal loaded in the memory onto the optical recording medium every predetermined time; Loading the image signal into the memory on a field or frame basis by multiprocessing during recording of the optical record carrier; Time-lapse recording method using a DVD loader including a. In the time-lapse recording method for recording a video signal photographed by a plurality of video recording means to the optical recording medium by a predetermined time for each video recording means using a DVD loader, Loading the video signal into a memory for each field or frame in a recording mode; Transferring the image signal loaded in the memory onto the optical recording medium every predetermined time; Loading image data recorded on the optical recording medium into the memory in a reproduction mode; Reading an image signal loaded in the memory and outputting the image signal through an image output device; Time-lapse recording / playback method using a DVD loader including a.