KR0141148B1 - Apparatus of recording and reproducing on selecting among multi-image - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-image selective recording and reproducing apparatus. In particular, the present invention relates to a multi-image selective recording and reproducing apparatus. A recording signal processor configured to sequentially select and modulate a plurality of video signals in frame units; A recording amplifier section for amplifying a plurality of video signals output from the recording signal processing section and mixing identification data for each of the video signals; A magnetic recording unit which magnetically records the image signals output from the recording amplifier unit; A reproduction signal processing unit for reproducing a plurality of video signals recorded in the magnetic recording unit; A sample end hold unit which selects and holds a video signal among the plurality of video signals from the reconstruction signal processor according to the identification data; An image storage unit for storing the image signal output from the sample end hold unit until another image signal is input; And an output unit for converting and outputting a video signal output from the video storage unit into a format of a predetermined standard.

Description

Multi image selection recording and playback device

1 is a block diagram of a conventional multi-image selective recording and reproducing apparatus.

2 is a block diagram of a multi-image selective recording apparatus of the present invention.

3 is a block diagram of a multi-image selective playback apparatus of the present invention.

4 is a signal diagram illustrating multi-image selection recording and playback according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-image selective recording and reproducing apparatus, and more particularly, to a device capable of selectively recording various different video signals on a tape per frame and selectively reproducing a desired image.

In the prior art, when a plurality of surveillance cameras are installed, video recording is performed for each video signal as shown in FIG. That is, the camera 1 (10) signal is recorded in the recording unit 1 (40), the camera 2 (20) is recorded in the recording unit 2 (50), the camera 3 (30) is recorded in the recording unit 3 (60) and finally It is configured to reproduce on the monitor 70.

However, in the prior art, when a plurality of surveillance cameras are required, each recording must be performed, resulting in excessive tape consumption and inconvenience in managing the tape. In addition, since each device requires a recording device, there is a disadvantage in that the installation costs much.

Accordingly, an object of the present invention is to provide an apparatus for recording and reproducing a plurality of images on one tape.

A multi-image selective recording apparatus according to the present invention for achieving the above-mentioned, comprising: a recording signal processor for sequentially selecting and modulating a plurality of image signals generated by a plurality of cameras in units of frames; A recording amplifier unit for amplifying a plurality of video signals output from the recording signal processor and mixing identification data for each of the video signals

A magnetic recording unit which magnetically records the image signals output from the recording amplifier unit; A reproduction signal processing unit for reproducing a plurality of video signals recorded in the magnetic recording unit;

A sample end hold part which selects and holds a video signal among the plurality of video signals from the reproduction signal processor according to the identification data; An image storage unit which serves as a video signal output from the sample end hold unit until another image signal is input; And an output unit for converting and outputting a video signal output from the video storage unit into a format of a predetermined standard.

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

2 is a block diagram of a multi-image selective recording apparatus according to the present invention, and has a video signal input 1 (110), 2 (120), 3 (130), 6 (140) and a contact signal abcdefg as a plurality of video inputs. A second switch SW2 and a control signal CNT1 having a first switch SW2 for selecting a signal, a monitor 150 for outputting an image, a contact abcdefg, and selecting a plurality of video signals by the control signal CNT1. ) And a micom unit 200 for outputting data DATA, a recording signal processing unit 210 for frequency-modulating the video signal, and a data signal DATA for amplifying the video signal and identifying each of the video signals. A recording amplifier section 220 and a tape recording section 330 for recording a video signal.

3 is a block diagram of a multi-image selective playback apparatus according to the present invention, wherein a reproduction amplifier section 300 for amplifying a reproduced recording signal, a reproduction signal processor 310 for converting a high frequency signal into a video signal, and PB are selected. The microcomputer 330 outputs the control signals CNT2-1 and CNT2-2, and a sample end for selecting a desired video signal based on the identification data based on the control signal CNT2-2, and sampling the corresponding video signal. Hold unit 320, an image storage unit 340 for storing and reading the video signal according to the control signal (CNT2-1), and an output for converting and outputting to NTSC standard video standard for outputting the video signal to the monitor It is composed of a portion (350).

4 is a schematic diagram of a plurality of recorded video signals, (b) shows an example of PB selection among a plurality of video signals, and (c) shows a plurality of video signals. The final output diagram when Signal 1 is selected from the signals.

Therefore, specific embodiments of the present invention will be described in detail with reference to FIGS.

First, as shown in FIG. 2, each video signal generated from a plurality of input cameras is set to six. That is, image input 1 (110). Image input 2 (120), image input 3 (130) ... image input 6 (140) is installed and output to the first switch (SW1) and the second switch (SW2). The switch SW1 having the contacts a.b.c.d.e.f.g selects an image signal output to the monitor 150, and a desired image signal may be selected and displayed on the monitor 150. On the other hand, the switch SW2 having the contacts a.b.c.d.e.f.g is controlled by the control signal CNT1 of the microcomputer 200 and sequentially selects an image input signal to form a signal that is actually recorded. That is, as shown in FIG. 4 (a) in order to match the synchronization of the micro 200, a video signal is sequentially selected from video input 1 to video input 6 to make a recording signal. The image signal selected by the unit is converted into a frequency modulated signal by the recording signal processing unit 210 through a signal processing process. The recording amplifier 220 amplifies to record a signal on the tape, and in order to distinguish each image input signal, the amplified image signal is added to each image signal by adding identification data, which is an identification table, to the data line of the microcomputer 200. Mix The video signal output from the recording amplifier 220 is recorded through the head on the tape, and a plurality of video inputs are sequentially recorded in the tape recording unit 230 which recognizes and outputs the signal recorded on the tape as shown in FIG. do. In the above embodiment, recording is selected in units of frames for convenience, but in another embodiment, the same configuration may be performed by selecting two frames.

Next, the signal reproduced through the head in the tape recording unit 230 amplifies the signal in the reproduction amplifier 300, and converts the high frequency signal reproduced in the reproduction signal processing unit 310 into an image signal. As shown in (b) of FIG. 4, when the user selects a desired playback video, the microcomputer 330 receives a PB (PlayBack) selection control signal and receives the video input signal 1 through 6 based on the identification data. Select either (signal 1 here). The control signals CNT2-1 and CNT2-2 are output from the microcomputer 330 according to the selected image. A sampled binary signal is produced to make the corresponding image frame corresponding to the selected image input as the control signal to be a signal that the memory device can store at sample end hold. This signal is output as a digital signal to the image storage unit 340 which is a storage element and is a reproduction signal corresponding to the next image input frame signal (next frame of the image input signal) (1-1 reproduction signal in FIG. 4 (b)). Wait for it to be entered. In other words, the video storage unit 340 is constituted by a field screen memory circuit which collects only the same video signal and outputs the same to the screen. The image signal stored here is composed of a field signal and is outputted, and the vertical signal is synchronized with the control signal CNT-2 generated by the microcomputer 330 until the next signal is input from the sample end hold 320. It outputs video signal continuously in V-sync cycle. Next, the output unit 350 generates and outputs a video image signal to receive the signal output from the image storage unit 340 and output it to the monitor. Therefore, as shown in (b) of FIG. 4, the final output (signal 1, next frame signal 1-1 of signal 1) corresponding to the selected signal of (c) is output according to the reproduction signal selection (signal 1). As shown in (c) of FIG. 4, the output continues to output signal 1 until the signal 1 is output and the next signal 1-1 is output. The same operation as described above can also be performed when playback selection corresponding to another video input is made.

As described above, according to the present invention, when the video input is six, the consumption of the tape is reduced to 1/6, and since six images are input to one tape, management is easy. As a result, many video signals are recorded on a single tape, so that only one recording device is required for a plurality of cameras, thereby reducing the tape consumption to 1 / N.

Claims (4)

A multi-image selective recording and reproducing apparatus, comprising: a recording signal processor configured to sequentially select and modulate a plurality of image signals generated by the plurality of cameras in units of frames; A recording amplifier unit for amplifying a plurality of image signals output from the recording signal processor and mixing identification data for each of the image signals; a magnetic recording unit for magnetic recording of image signals output from the recording amplifier unit; A reproduction signal processing unit for reproducing a plurality of video signals recorded in the magnetic recording unit; A sample end hold part which selects and holds a video signal from the plurality of video signals from the reproduction signal processing part according to the identification data; An image storage unit which stores the image signal output from the sample end hold unit until another image signal is input; And an output unit for converting and outputting the video signal output from the video storage unit into a format of a predetermined standard. The multi-image selection recording and reproducing apparatus according to claim 1, wherein the recording signal processing unit sequentially selects a plurality of image signals in units of at least one frame. 2. The apparatus of claim 1, wherein the sample end hold unit selects a frame of a corresponding video signal. The multi-image selective playback and recording apparatus according to claim 1, wherein the image storage unit stores the continuous frame until the image signal recorded in the next frame is inputted when the same image is output.