KR980013313A - Image display device and method - Google Patents

Abstract

The present invention relates to an image display for displaying two image signals on a screen of a TV in a dual screen, in particular, a TV signal processing circuit for receiving a TV signal and converting it into a signal for display on a screen, A video recording and reproducing apparatus for recording and reproducing the TV signal processed by the signal processing circuit by a specific control signal and a dual screen for receiving the output of the TV signal processing circuit and the output of the video signal recording / A key input unit for inputting a recording start point and an end point of the TV signal recorded in the display circuit and the video recording and reproducing means; and a control unit for starting recording according to the recording start point input and ending recording in accordance with the recording end point input, And a control unit for controlling the video recording and reproducing apparatus to reproduce and display an image, If there is an image to be viewed again while receiving a call, if only that part is designated, only the designated part is automatically recorded and reproduced and displayed simultaneously with the currently received image through a double window, The recording and reproducing process is simple and convenient for the user, and the cost is reduced because only one TV tuner is needed for dual screen display.

Description

Image display device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an image display for displaying two video signals on one screen on a main screen and a sub-screen, And displaying the same on a dual screen at the same time as a video currently being received.

Generally, in order to construct a double window in a TV, a first tuner for tuning a first video signal and a second tuner for tuning a second video signal are required in a TV, .

In addition, when data recorded in a video recording and reproducing apparatus such as a video cassette recorder (VCR) is reproduced through a dual screen, there is an inconvenience in that a control step is required to be performed at various stages in the case of reproduction in a slow motion.

In other words, if the user records the content to be watched again and wants to display simultaneously with the currently received TV signal through the dual screen, the VCR first records the desired content by pressing the recording key, then inputs the rewinding key when the recording is completed After rewinding to the beginning of the recorded content, press the dual screen key on the TV to display the dual screen, and then press the Slow Motion Playback Key on the VCR to display the desired contents simultaneously with the TV signal in slow motion.

In order to view the desired content, especially the slow motion, as a double screen, it is rare that many users use the function because it is inconvenient to the user because of the various steps as described above.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a TV receiver and a video recording and reproducing apparatus, And a TV screen is switched to a dual screen so that a past image recorded by a simple operation process can be a dual screen simultaneously with a current image being currently received. .

It is another object of the present invention to provide an image display apparatus having a low cost since only one tuner is required in a dual screen display due to the interface between the TV and the image recording and reproducing apparatus.

1 is an overall block diagram of a video display device according to the present invention.

2 is a flowchart of a video display method according to the present invention.

3 is an overall block diagram illustrating an image according to the present invention by interfacing a television and a recording /

4 is an overall block diagram showing an image according to the present invention by using a television-integrated recording and reproducing apparatus

Fig. 5 is an exemplary diagram showing a case where the television screen is divided into left and right screens according to the present invention

Fig. 6 is an exemplary diagram showing a case where the television screen is divided into a main screen and a sub screen in the present invention

DESCRIPTION OF THE REFERENCE NUMERALS

17: video cassette recorder (VCR), 17: digital tuner, 12: Y / C separator, 13: analog converter / digital converter , 18: converting section, 19: dual screen generating section, 20: DAC

According to another aspect of the present invention, there is provided a video display device including: a TV signal processor capable of receiving a TV signal and converting the TV signal into a signal for display on a screen; A dual screen display means for receiving and outputting the output of the TV signal processing means and the output of the video signal recording and reproducing means in a dual screen at the same time, A key input means for inputting a recording start point and an end point of a TV signal recorded in the recording and playback means; and a recording means for starting recording according to the recording start point input and ending recording in accordance with the recording end point input, And control means for controlling the video recording and reproducing means to display the video. A video display method according to the present invention is characterized by including: a TV signal processing step of receiving a television (TV) signal and converting it into a signal for display on a screen; a step of, when a recording start point is input and a recording medium is loaded, A recording step of recording the TV signal processed in the TV signal processing step until the recording is finished in the recording step, and when the recording is finished in the recording step, the recording medium is returned to the recording start position and the recorded content is reproduced, A display step of simultaneously displaying a signal reproduced on the dual screen and a TV signal processed in the TV signal processing step; and turning off the dual screen when the reproduction is completed in the displaying step. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram of an image display apparatus according to the present invention. 1, there are shown an antenna (Ant) for receiving a broadcast signal, a tuner (11) for tuning a plurality of RF signals received through the antenna (Ant) by a control signal to select one channel, A Y / C separation unit 12 for separating the luminance signal Y and the color signal C into a digital signal and a luminance signal Y and a color signal C, A luminance signal Y and a color difference signal U and V are generated by removing a luminance signal from the digital signal and converting the luminance signal into two color difference signals U and V, A microcomputer 15 for controlling the tuning of the tuner 11 and the signal processing of the digital video processor 14 and a digital video processor 14 for outputting the YUV signal of the digital video processor 14 as an analog signal Converts it into a high frequency signal, and outputs it to the RF input terminal of the recording / reproducing apparatus 17 An image recording and reproducing apparatus 17 for recording and reproducing the output of the DAC and the RF encoder 16 according to the key input of the user, A YUV signal of the digital video processing unit 14 and a YUV signal of the conversion unit 18 under the control of the microcomputer 15; A dual screen generating unit 19 for generating a dual screen signal and a DAC 20 for converting the signal of the dual screen generating unit 19 into an analog signal and outputting the analog signal to a television screen. In FIG. 1, the video recording and reproducing apparatus corresponds to a VCR, a digital video disc (DVA), a memory IC, a disc recording and reproducing apparatus, and the like. In the present invention, As an example. 2 is a flowchart illustrating an image display method according to the present invention. 3, the present invention can display a currently received TV signal and a past video recorded on the VCR as a dual screen by interfacing the TV with the VCR, and using the TV-integrated VCR (TVCR) as shown in FIG. 4 So that the currently received TV signal and the recorded past image can be displayed in a double screen. In addition, the dual screen generating unit 19 may be configured with a dual screen as a left screen and a right screen as shown in FIG. 5, or a main screen and a picture in picture (PIP) as shown in FIG. 6 have. The left and right screens shown in FIG. 5 are suitable for a wide TV having a ratio of 16: 9, and the main and sub screens shown in FIG. 6 are suitable for a general TV having a 4: 3. At this time, as an image to be displayed on the left and right screens as shown in FIG. 5 and the main and sub screens as shown in FIG. 6, it is possible to reproduce the image in the standard mode, but the present invention will be described as an example of reproduction in the slow motion mode. In the present invention configured as described above, when a plurality of RF signals are received through the antenna Ant, the tuner 11 selects one channel under the control of the microcomputer 15 and outputs the selected channel to the Y / C separator 12. The Y / C separator 12 separates the composite video signal of the channel selected by the tuner 11 into a luminance signal Y and a color signal C through filter processing using correlation in the spatial domain, Converts the separated luminance signal Y and the color signal C into digital signals and outputs them to the digital video processor 14. The digital video processor 14 removes luminance components from the new signal C converted into digital signals under the control of the microcomputer 15 to convert the luminance signals into two color difference signals U and V, YUV) to the DAC and IF echoer 16 and the double-screen generator 19. The DAC and the RF encoder 16 convert the YUV signal back to an analog signal and then RF-encode the analog signal and transmit it to the RF input terminal of the VCR 17. The VCR 17 records and reproduces a video signal transmitted to an RF input terminal according to a user's key input, and outputs an RGB signal as a baseband signal. The RGB signal is converted into a YUV signal by the converting unit 18 and then output to the dual screen generating unit 17.

That is, when a portion of the TV desired to be viewed by the user is displayed again, the user inputs a slow mode designation key using key input means (not shown) such as a remote controller or the like (step 201) When the key is input, the VCR 17 is automatically turned on (step 202) if the VCR 17 is in a standby state (step 202), and determines whether the tape is loaded in the deck (step 203) The OSD function is turned on to notify the user that the tape is not loaded and the program is terminated (step 204). If it is determined in step 203 that the tape is loaded The VCR 17 records the image information received on the RF input terminal through the TV on a tape (step 205). Then, while recording the image information on the tape, (Step 206). When the recording end key is input by the user, the recording is terminated and the tape is rewinded to the beginning of the recording (step 207). If it is determined that the recording end key is not inputted The steps 205 and 206 are repeated to continue recording until the recording end key is input. If the tape returns to the beginning of the recording in step 207, the tape is reproduced and the dual screen mode is turned on at the same time the screen is switched to the dual screen (step 208). That is, the dual screen generating unit 19 generates the YUV signal of the digital video processor 14 and the YUV signal of the converting unit 18 as a dual screen signal under the control of the microcomputer 15.

Here, the dual screen signal may be a left or right screen signal as shown in FIG. 5 or a main or sub screen signal as shown in FIG. At this time, the YUV signal output from the conversion unit 17 transmits the slow motion of the VCR itself to the signal selected as the slow mode. That is, if 30 frames per second (in NTSC format) is reproduced in the normal mode, in the slow mode, the rotation speed of the head drum of the VTR is slowed down to read 30 frames in 3 seconds.

The detailed operation of the double-screen generating unit 19 is well known in the art, so a detailed description thereof will be omitted.

The normal screen signal of the TV generated by the dual screen generator 19 and the slow motion screen signal transmitted from the VCR are converted into a screen double video signal and then transmitted to the screen of the TV through the DAC 27. Accordingly, the normal signals of the currently received TV and the slow motion signals reproduced through the VCR are simultaneously displayed on the two screens of the TV screen separated into the left and right screens or the main and sub screens, respectively. At the same time, it is determined whether the reproduction of the video signal recorded on the tape of the VCR 17 has been completed (step 209). If it is determined that the reproduction has not been completed, the process returns to step 208 and a slow motion If it is determined that the reproduction is finished, the dual screen generating unit 19 is controlled to turn off the dual screen (step 210). Then, the VCR 17 is kept in the standby mode (step 211).

Meanwhile, the present invention can simultaneously display a first broadcast signal selected through a tuner of a TV and a second broadcast signal selected through a tuner of a VCR on a dual screen, for example, a left / right screen or a main screen and a sub screen. The first and second broadcasting signals may be the same channel or different channels, and the first or the second video signal may be displayed on the left or right screen, And can be selected by the user, and the switching of the left and right screens or the switching of the main screen and the sub screen can be selected by the user.

As described above, according to the video display apparatus and method of the present invention, when there is an image to be watched while receiving and displaying a TV signal by automatically interfacing the TV with the video recording and reproducing apparatus, Is recorded and reproduced, and is displayed simultaneously with the currently received image through the double screen, so that recording and reproduction of the designated part by the user and switching and display of the dual screen are performed by a simple operation procedure, And the cost is reduced because only one TV tuner is needed for dual screen display.

Claims (7)

A TV signal processing means for receiving a TV signal and converting it into a signal for display on a screen; video recording and reproducing means for recording and reproducing the TV signal processed by the TV signal processing means by a specific control signal; A dual screen display means for receiving a current video signal of the TV signal processing means and a past video signal of the video signal recording and reproducing means and simultaneously displaying them on a dual screen; a recording start point and an end point of the TV signal recorded in the video recording and reproducing means And control means for controlling the image recording and reproducing means to display the image by reproducing the recorded signal while ending the recording in accordance with the input of the recording end point and inputting the recording end point And the image display device. The video display device according to claim 1, wherein the past video reproduced by the video recording and reproducing means is a slow motion signal. The video display device of claim 1, wherein the dual screen display means comprises a left screen and a right screen. The video display device of claim 1, wherein the dual screen display means comprises a main screen and a sub screen. A TV signal processing step of receiving a TV signal and converting the received TV signal into a signal for display on the screen; and if the recording start point is input and the recording medium is loaded, the TV signal processed in the TV signal processing step until the recording end point is input And recording the reproduced contents on the recording medium at a recording start position when the recording is finished in the recording step and turning on the dual picture mode to reproduce the signals reproduced on the dual screen in the TV signal processing step A display step of simultaneously displaying the TV signal and the TV signal; and turning off the dual screen when the reproduction is completed in the displaying step. The method of claim 5, wherein the signal reproduced and displayed in the display step is a slow motion signal. 6. The video display method according to claim 5, wherein the dual screen off step maintains the recording / reproducing apparatus for recording / reproducing the TV signal in the standby state while turning off the dual screen. ※ Note: It is disclosed by the contents of the first application.