KR100284970B1 - Screen splitter with recording method for frame video - Google Patents

Abstract

In the present invention, in recording the image displayed through the four-screen splitter, by converting the existing quad-type recording method to the frame-type recording method, a method of recording a frame image capable of four-screen split display and the front screen of the selected screen is added. It is about splitter. In order to convert the existing quad-type recording method to the frame-type recording method, the video signal input through the camera is stored in each frame unit, and the output is alternately output according to a certain time timing when outputting, and the screen number is assigned to each frame video signal. It reads out the address number addressed to each frame video signal during playback by displaying addressing and recording, and displays it in the same form as the existing four-screen divider.When the user selects the desired screen, the selected screen among the four screens is output as one independent screen. A screen splitter with a method of recording a frame image that enlarges and outputs a difficult-to-identify screen is presented.

Description

Screen splitter with recording method for frame video

In the present invention, in recording the image displayed through the four-screen splitter, by converting the existing quad-type recording method to the frame-type recording method, a method of recording a frame image capable of four-screen split display and the front screen of the selected screen is added. The quad display device added the record function of frame screen.

In general, a CCTV system is usually equipped with a plurality of surveillance cameras, and processes image signals input from the cameras and displays them through a monitor and a TV. The CCTV system usually uses a plurality of cameras to capture and display a subject. A 4-screen splitter divides and displays video signals inputted from four cameras into four screens at the same time. Where the camera is installed can be monitored and if the recording is required to connect to the VCR to record the displayed image.

The above-described method is similar to the technique described in the four-screen split display shown in Patent Publication 92-5058. The four-screen split display will be described with reference to the accompanying drawings.

1 is a system configuration diagram of a general 4-screen split display device.

2 is a circuit diagram of a general 4-screen split display device.

3 is a diagram illustrating a general 4-screen split display.

As shown in FIG. 1, a four-screen split display device includes a Y / C separator 1 for separating the luminance signal Y and a color difference signal RY, BY from a video signal, and the Y / C separator 1. A selector 2 for selecting an output signal, an A / D converter 3 for converting an analog signal selected by the selector 2 into a digital signal, and a digital image output from the A / D converter 3 A control unit 5 for recording / decoding a signal into the RAM 4, a latch unit 6 for temporarily holding an output signal of the control unit 5, and a synchronous separator for separating horizontal and vertical synchronization of the video signal ( 7), a plurality of D / A converters 8-10 for converting digital luminance signals and color difference signals output from the latch unit 6 into analog signals, and the plurality of D / A converters 8-10. Encoder 11 for converting the luminance signal Y and the color difference signal RY, BY outputted from the < RTI ID = 0.0 > To generate an encoder and apply it to the encoder 11, the on-screen generators 13 and 13 'that display characters on the screen, and generate year, month, day, day of the week, time, and seconds. The timer 14, the microcomputer 15 for controlling the cutting part, the clock generator 16 for generating the clock signal to the microcomputer 15, various information on the current state, etc. in preparation for power failure An EEPROM 17 for storing, a line buffer 18 for signal interface with a computer, an analog switching unit 19 for arbitrarily selecting four signals input from a camera, and the on-screen generator 13 ' And a video signal synthesizing unit 20 for synthesizing the video signals output from the analog switching unit 19 and displaying them as characters, and amplifying the video signals output from the video signal synthesizing unit 20 to output terminals 21 and 22. Buffer 23 to be output to a monitor, a TV receiver and a VCR connected to In this case, reference numerals (a) to (d) denote the same configuration as the image signal processing unit, and 24 has a function of selectively outputting the image signal and the text signal as the switching unit. The effects of the four-screen split display device configured as described above will be described with reference to FIGS. 1 and 3.

First, the video signals from the four surveillance cameras are converted into digital signals through the video signal processing unit (a) and (d). At this time, the Y / C separator 1 converts the video signals input from the camera into the luminance signal (Y). ) And the color difference signals RY and BY, and the sync separator 7 separates the horizontal and vertical sync signals and inputs them to the controller 5. In addition, the signals Y, R-Y, and B-Y separated through the Y / C separator 1 are input to the controller 5. In addition, the respective signals Y, RY and BY separated through the Y / C separator 1 are inputted to the A / D converter 3 through the selector 2 controlled by the controller 5. The D converter 3 converts the input analog signal into a digital signal and inputs it to the control unit 5.

Therefore, the controller 5 stores or decodes the digital signal in the RAM 4, and when reading, the data is inputted through the latch 6 to the D / A converter 8-10. The digital signals (Y, RY, BY) are converted into analog signals through the D / A converters 8-10, respectively.

At this time, the encoder 11 receives the horizontal and vertical synchronization signals H and V and the color burst signal input from the synchronization generator 12 and converts the input luminance signal Y and the color difference signal RY and BY into image signals. Character data of the on-screen generator 13, which is operated by the output of the synchronization generator 12, is added to the D / A converter 8-10 together with the output of the latch 6 so that the characters in the video signal are combined. The data for is loaded.

In addition, since the video signal synthesized through the encoder 11 is output to the monitor or TV receiver through the switch 24 controlled by the microcomputer 15, the signal output from each video signal processing unit (a)-(d). Is divided into 4 parts as shown in FIG. 3 on one screen.

On the other hand, the timer 14 connected to the microcomputer 15 generates a time and date, etc., the EEPROM 17 stores various information of the current state to prepare for power failure, and the line buffer 18 is referred to. Interface function for exchanging data with a computer. In addition, the analog switching unit 19 may sequentially select the video signal of the camera by the control signal output from the microcomputer 15, the on-screen generator 13 'and the image signal synthesizer 20 is an analog switching unit When (19) is in the automatic selection mode, a character is displayed on the screen, and the image output terminal 22 is for recording a video signal through a VCR or the like.

On the other hand, the alarm input terminal of the microcomputer 15 is connected to an output terminal such as a sensor installed around the camera to inform the microcomputer 15 of the presence or absence of an abnormality, the alarm output terminal is connected to the VCR, etc. when an abnormality occurs in the alarm input The analog switching unit 19 is selected from the microcomputer 15 to output a video signal of a camera that has an abnormality to a TV receiver or a monitor, and to record via VCR. The LED display terminal is a key. It is used to display the current system status when the button is pressed and the key input terminal is to receive data from the operation keys.

As described above, when the image displayed by the monitor and the TV receiver is stored in the general 4-screen display device and played back later, four screens are divided and displayed on one monitor and the TV receiver. In the case of multi-recording, there was a problem in that an expensive video multiplexing equipment must be separately purchased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to divide four video signals into four screens by recording four video signals on one monitor or TV receiver and then to reproduce one screen or TV. When recording on the receiver or displaying in full screen, each video signal is rotated and inputted to the VCR at regular intervals in the unit of frame. The present invention provides a screen splitter with a method of recording a frame image in which the stored individual screens are displayed in full screen.

1 is a system configuration diagram of a general 4-screen split display device

2 is a circuit diagram of a general 4-screen split display device.

3 is a diagram illustrating a general 4-screen split display.

4 is a block diagram illustrating a screen splitter to which a method of recording a frame image is added.

5 is an exemplary diagram illustrating a four-screen split display and a selection display screen;

<Description of the symbols for the main parts of the drawings>

30: surveillance camera 1 31: surveillance camera 3

32: surveillance camera 2 33: surveillance camera 4

34,38: decoder V1 35,39: decoder V3

36,40: decoder V2 37,41: decoder V4

42,43: A / D converter 44: V1, V3 GDRAM

45: V2, V4 GDRAM 46: V1 DRAM

47: V3 DRAM 48: V2 DRAM

49: V4 DRAM 50, 51: D / A converter

52: quad encoder 53: QOSD

54: Monitor 55: frame encoder

56: FOSD 57: VCR

58: key input unit 59: microcomputer

60: VCR INPUT 61: frame analyzer

62: control unit 100: image input unit

200: quad image processing unit 300: display unit

400: image playback unit 500: frame image processing unit

600: register

Hereinafter, with reference to the accompanying drawings for the configuration and operation of the embodiment for achieving the object of the present invention.

4 is a block diagram illustrating a screen splitter to which a method of recording a frame image is added.

5 is an exemplary diagram illustrating a four-screen split display and a selection display screen.

Referring to FIG. 4, the configuration of the present invention is a display device including an image input unit 100, a quad image processing unit 200, and a display unit 300. The other is a recording apparatus including a frame image processing unit 500 and a recording unit 600. First, the display device will be described. The surveillance camera 1 (30), the surveillance camera 2 (32), the surveillance camera 3 (31), and the surveillance camera 4 (33) installed at a place desired by the user to capture the state of the place. In addition, quadrature (QURD) processing and digital conversion of the image signal photographed and output from the surveillance camera 1 (30), surveillance camera 2 (32), surveillance camera 3 (31), and surveillance camera 4 (33). A decoder V1 (34), a decoder V2 (36), a decoder V3 (35), a decoder V4 (37) for processing the video with a suitable video signal and outputting the recorded frame screen when the recorded video is reproduced; A / D for converting the video signals V1, V2, V3, and V4 outputted from the decoders V1 34, V2 36, decoder V3 35 and decoder V4 37 to be temporarily stored. The converter 42 and the digital video signals output from the A / D converter 42 are grouped into two bundles, respectively, to convert the V1 and V3 video signals. V1, V3 GDRAM (Graphic Dynamic RAM) 44 for storing, V2, V4 GDRAM (Graphic Dynamic RAM) 45 for temporarily storing V2, V4 video signals, and V1, V3 GDRAM (44), V1, Four screens are divided into a D / A converter 50 for converting a video signal stored in the V3 GDRAM 44 to a screen and an analog video signal output from the D / A converter 50, respectively. Quad encoder 52 that mixes each video signal V1, V3, V2, V4 and combines them into one screen so that the video signal can be outputted, and a user can take notes on the video signals of V1, V3, V2, and V4. QOSD (QURD OSD) 53 for outputting an OSD screen under the control of the microcomputer 59, and a monitor 54 for outputting a composite video signal output from the quad encoder 52.

In addition, the recording apparatus surveillance camera 1 (30), surveillance camera 2 (32), surveillance camera 3 (31), surveillance camera 4 (33) and the surveillance camera 1 (30), Decoder V1 which processes video into a suitable video signal for frame processing and digital conversion of video signals captured and output from surveillance camera 2 (32), surveillance camera 3 (31) and surveillance camera 4 (33). 38), the image output from the decoder V2 (40), the decoder V3 (39), the decoder V4 (41), and the decoder V1 (38), the decoder V2 (40), the decoder V3 (39), and the decoder V4 (41). A / D converter 43 for converting signals from analog to digital so that signals V1, V2, V3, and V4 can be temporarily stored, and V1 video signals are temporarily stored in the digital video signals output from the A / D converter 43. V1 DRAM (Dynamic RAM) 46, V2 DRAM (Dynamic RAM) 48 for temporarily storing V2 video signals, V3 Dynamic RAM (47) for temporarily storing V3 video signals, and V4 video Signal The V4 DRAM (Dynamic RAM) 49 which temporarily stores, the V1 DRAM 46, the V2 DRAM 48, the V3 DRAM 47, and the V4 DRAM 49 are controlled to respectively store the respective image signals stored in the RAM. A controller 62 for alternately outputting every 1/30 second on a frame-by-frame basis, and video signals output to the V1 DRAM 46, V2 DRAM 48, V3 DRAM 47, and V4 DRAM 49. The D / A converter 51 and the video signals V1, V3, V2, and V4 output from the D / A converter 51 and the D / A converter 51 convert the digital signal into analog, respectively. When inputted frame by frame, the frame encoder 55 addresses the screen number corresponding to each frame, and the microcomputer 59 controls the user to take notes on the video signals of V1, V3, V2, and V4. Accordingly, it is composed of a FOSD (FRAME OSD) 56 for outputting an OSD screen and a VCR 57 for recording a composite video signal output from the frame encoder 55. Lastly, in addition to the above configuration, the image reproducing unit 400 for reproducing the video recorded by the VCR 57 is input through the VCR INPUT 60 to which the recorded video is input and through the VCR INPUT 60. Reads the screen number of each frame addressed by the frame encoder 55 from the frame screen and outputs the frame video signal to the decoder corresponding to each number, and the frame video signal corresponding to the selection screen when the user switches the selection screen. And a frame analysis unit 61 configured to output only a key input unit 58 for inputting a memo input using a OSD of an image signal output through the image reproducing unit 400 and switching a selected screen; It is connected to the key input unit 58 of the to control all operations according to the input, in particular seen as a microcomputer 59 for controlling the frame analysis unit 61, controller 62, QOSD 53 and FOSD 56 Invention is composed The.

Looking at the operation of the embodiment of the present invention having the above configuration is as follows.

Referring to FIGS. 4 and 5, first, the display apparatus is as follows. If the user selects a location to be photographed and installs the surveillance camera 1 (30), the surveillance camera 3 (31), the surveillance camera 2 (32), and the surveillance camera 4 (33), the camera captures the image of the place and the image. The signal is output to the decoder V1 34, the decoder V3 35, the decoder V2 36, and the decoder V4 37 as a signal. The video signals output from the surveillance camera 1 (30), surveillance camera 3 (31), surveillance camera 2 (32), and surveillance camera 4 (33) are decoder V1 (34), decoder V3 (35), decoder V2 (36). In order to perform quadrature (QURD) processing and digital conversion of the video signal, the decoder V4 37 processes the video into an appropriate video signal and outputs the video signal to the A / D converter 42. The analog video signals output from the decoder V1 34, decoder V3 35, decoder V2 36, and decoder V4 37 are converted to digital video signals by the A / D converter 42. The video signals V1, V2, V3, and V4 digitally converted by the A / D converter 42 are temporarily stored in the V1 and V3 GDRAMs 44, and V2 and V4 are V2 and V4 GDRAMs 45. Temporarily stored in The digital video signals temporarily stored in the V1 and V3 GDRAMs 44 and V2 and V4 GDRAMs 45 are converted into analog video signals by the D / A converter 50. The video signal converted to analog in the D / A converter 50 is synthesized into one screen by mixing each video signal V1, V3, V2, V4 so that the quad encoder 52 can be divided into 4 screens and output. Finally it is displayed via 54. If the user wants to memorize the contents suitable for each screen in the screen divided into four screens, the OSD input button is switched using the key input unit 58. Simultaneously with the switching, the microcomputer 59 drives the QOSD 53 to output an OSD screen on the monitor 54 screen, and a user inputs a memo to be input through the OSD screen.

In addition, the recording apparatus is as follows. The video signals photographed through the surveillance camera 1 (30), surveillance camera 3 (31), surveillance camera 2 (32), and surveillance camera 4 (33) are decoder V1 (38), decoder V3 (39), decoder V2 ( 40) to the decoder V4 (41). The video signals output from the surveillance camera 1 (30), surveillance camera 3 (31), surveillance camera 2 (32), and surveillance camera 4 (33) are decoder V1 (38), decoder V3 (39), decoder V2 (40). In order to perform frame processing and digital conversion of the video signal, the decoder V4 41 performs video processing on an appropriate video signal and outputs it to the A / D converter 43. The analog video signals output from the decoders V1 38, decoder V3 39, decoder V2 40, and decoder V4 41 are converted to digital video signals by the A / D converter 42. In the video signals V1, V2, V3, and V4 converted to digital by the A / D converter 43, V1 is temporarily stored in the V1 DRAM 46, V3 is temporarily stored in the V3 DRAM 47, and V2 is V2. Temporarily stored in the DRAM 48, V4 is temporarily stored in the V4 DRAM 49. The digital video signals corresponding to the screens temporarily stored in the V1 DRAM 46, the V3 DRAM 47, the V2 DRAM 48, and the V4 DRAM 49 are alternately 1/30 seconds each under the control of the controller 62. The D / A converter 50 is output to the D / A converter 50, and the D / A converter 50 converts the digital video signal into an analog video signal. In the frame video signal converted into analog in the D / A converter 50, the screen numbers corresponding to V1, V3, V2, and V4 are divided into frames so that the screen numbers of the respective frame video signals can be distinguished by the frame encoder 55. Address to a video signal. The frame video signal addressed by the frame encoder 55 is recorded through the VCR 57. In addition, in the quad display 100, a memo input by the user through the QOSD 53 is also driven by the FOSD 56 at the same time as the QOSD 53, and the memo is displayed on the FOSD 56 screen by the frame encoder 55. ) Is synthesized and recorded on each frame video signal.

Finally, when the user plays the recorded video is as follows.

The frame video signal recorded through the VCR 57 is applied to the frame analyzer 61 through the VCR INPUT 60 simultaneously with the playback of the VCR 57. The frame analyzer 61 decodes the screen number addressed to each frame of the frame video signal output from the VCR INPUT 60 to correspond to the screen number corresponding to each frame, that is, V1, V2, V3, and V4. The V1 frame video signal is output to the decoder V1 (34), the V2 frame video signal is the decoder V2 (36), the V3 frame video signal is the decoder V3 (35), and the V4 frame video signal is output to the decoder V4 (37). . Subsequent processes are performed in the same manner as the operation of the quad type display apparatus 100 described above, and the recorded screen is divided into four sections through the monitor 54 and displayed. When the screen is divided into 4 parts and displayed, the screen number corresponding to the user through the key input unit 58 if the user has difficulty in identification or one screen selection is required. When switching to, the microcomputer 59 controls the frame analyzer 61 to display only one screen of the quad screen according to the input of the key input unit 58. The frame analysis unit 61 under the control of the microcomputer 59 outputs only the video signal corresponding to the screen number selected from the frame video signal input from the VCR INPUT 60 to 4 as shown in FIG. It is displayed as one independent screen instead of split screen. If the user inputs a memo through the OSD during recording, the OSD screen is displayed on the display screen.

Through all the above processes, a screen splitter having a method of recording a frame image is implemented as the present invention intends.

As can be seen from the above description, in the present invention for recording the image displayed through the existing four-screen splitter, the video signal input through the camera to convert the conventional quad-type recording method to the frame-type recording method, respectively When saving and outputting frame by frame, it outputs alternately according to the timing at a certain time. Also, by recording the screen number to each frame video signal, the screen number addressed to each frame video signal is read. Displayed in the form of a divider and when the user selects the desired screen, the selected screen among the 4 screens is output as one independent screen to enlarge and output the screen that is difficult to identify, and without purchasing expensive video multiplex equipment separately. Reduce costs by solving with one device It works.

Claims (3)

In a closed circuit television for displaying and recording images taken by a plurality of cameras, Image input unit 100 composed of a plurality of cameras, It has a display unit 300 for displaying an input video signal, A quad image processing unit 200 which performs division processing for dividing and displaying a plurality of image signals received from the image input unit 300 on a monitor; A frame image processor 500 which performs signal processing to store a plurality of image signals received from the image input unit 100 in units of frames; A recording unit 600 for storing the image signal processed in units of frames by the frame image processing unit 500; An image reproducing unit 400 for reproducing the frame image signal received from the recording unit 600; A microcomputer 59 for supplying control signals from the quad image processing unit 200, the frame image processing unit 500, and the image reproducing unit 400; And a key input unit 58 for inputting an instruction signal to the micom 59 so that a user can perform necessary control. The display unit 300 always displays the divided image which is the output signal of the quad image processing unit 200, and displays the frame image signal output from the image reproducing unit 400 one frame by frame according to a user's instruction. The screen splitter is added to the recording method characterized in that the frame image. The method of claim 1, wherein the frame image processing unit 500, Decoder V1 (38) and decoder V2 (40) for image processing with a video signal suitable for frame conversion and digital conversion of image signals taken and output from four cameras (30, 31, 32, 33) Decoder V3 (39), decoder V4 (41), A / D for converting the video signals V1, V2, V3, and V4 output from the decoders V1 (38), decoders V2 (40), decoders V3 (39), and decoders V4 (41) to be temporarily stored. Converter 43, The V1 DRAM 46 temporarily stores the V1 video signal from each of the digital video signals output from the A / D converter 43, the V2 DRAM 48 temporarily stores the V2 video signal, and the V3 video signal. A V3 DRAM 47, a V4 DRAM 49 for temporarily storing a V4 video signal, The controller controls the V1 DRAM 46, the V2 DRAM 48, the V3 DRAM 47, and the V4 DRAM 49 to alternately output each image signal stored in the RAM every 1/30 seconds in a frame unit. With 62, A digital-to-analog converter (D / A converter 51) for recording video signals output from the V1 DRAM 46, the V2 DRAM 48, the V3 DRAM 47, and the V4 DRAM 49; When each video signal V1, V3, V2, V4 output from the D / A converter 51 is input by one frame under the control of the controller 62, a frame encoder for addressing the screen number corresponding to each frame is provided. With 55, Recording as a frame image, characterized in that the FOSD (FRAME OSD) 56 to output the OSD screen under the control of the microcomputer 59 so that the user can take notes on the video signals of V1, V3, V2, V4 Splitter with added method. The method of claim 1, wherein the image playback unit 400, A VCR INPUT 60 to which the recorded video is input; From the frame screen input through the VCR INPUT 60, the screen number of each frame addressed by the frame encoder 55 is read, and the frame video signal is output to the decoder corresponding to each number, and the user switches the selection screen. And a frame analyzing unit (61) configured to output only a frame image signal corresponding to the selection screen.