KR100198598B1 - Apparatus & method for displaying image - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display for displaying two video signals on a screen of a TV on a dual screen. In particular, the present invention relates to a TV signal processing circuit for receiving a television signal and converting it into a signal for display on a screen. A video recording and reproducing apparatus for recording and reproducing TV signals processed by a signal processing circuit by a specific control signal, and a dual screen which simultaneously receives the output of the TV signal processing circuit and the output of the video signal recording and reproducing apparatus and displays them on a dual screen. A display circuit, a key input section for inputting a recording start point and an end point of the TV signal recorded in the video recording / reproducing means, a signal that starts recording in accordance with the recording start point input and ends recording in accordance with the recording end point input, and at the same time the recorded signal And a control unit for controlling the video recording and reproducing apparatus to display an image by playing the video. If there is a video that you want to see again while receiving and displaying a call, if you specify only that part, the user can automatically record and play only the designated part and display it simultaneously with the image currently being received through the double window. The recording and playback process is simple, which gives the user convenience, and the cost is reduced because only one tuner of the TV is required for dual screen display.

Description

Video display device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display for displaying two video signals on a single screen as a main screen and a sub-screen. In particular, the present invention relates to an image to be viewed again while receiving and displaying a television (Television) signal. The present invention relates to a video display device and a method for recording and reproducing and simultaneously displaying an image being received on a dual screen.

In general, in order to configure 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, that is, two tuners, are required in a TV, which increases cost. It became a factor.

In addition, when playing data recorded on a video recording and reproducing apparatus such as a video cassette recorder (VCR) through a dual screen, in particular, when playing in slow motion, there is an inconvenience of having to go through several steps.

In other words, if you want to record the content you want to watch again and display it simultaneously with the TV signal currently being received through the dual screen, first record the desired content by pressing the record key on the VCR, and then enter the rewind key when the recording is completed. Rewind to the beginning of the recording, and on TV, press the dual screen key to bring up the dual screen, then press the slow motion playback key on the VCR, the desired content is displayed simultaneously with the TV signal in slow motion.

As such, in order to view the desired content, in particular, the slow motion in a dual screen, the user may go through the various steps as described above, causing inconvenience to the user, and those who deliberately use this function.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to designate only a part of an image to be viewed again while receiving and displaying a TV signal, and to designate the portion by an automatic interface between the TV and an image recording / reproducing apparatus. Provided is a video display device and method for automatically recording and playing back only a portion and simultaneously converting a TV screen to a dual screen, so that the past image recorded by a simple operation process can be viewed in dual screen simultaneously with the current image currently being received. Is in.

Another object of the present invention is to provide a video display device having a low cost since only one tuner can be provided in a TV when displaying a dual screen by an interface between the TV and an image recording / reproducing apparatus.

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

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

3 is an overall block diagram of displaying an image according to the present invention by interfacing a television and a recording and reproducing apparatus.

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

5 is an exemplary view illustrating a case in which a television screen is divided into left and right screens according to the present invention.

6 is an exemplary view showing a case in which a television screen is divided into a main screen and a sub screen in the present invention.

* Explanation of symbols for main parts of the drawings

11: tuner 12: Y / C separation unit

13: analog / digital converter (ADC) 14: digital video processing unit

15: Micom 16: DAC and RF Encoder

17: Video cassette recorder (VCR) 18: Conversion unit

19: dual screen generation unit 20: DAC

A feature of the video display device according to the present invention for achieving the above object is a TV signal processing means for receiving a television (TV) signal and converting it into a signal for display on the screen, and the TV signal processing means Image recording and reproducing means for recording and reproducing the TV signal by a specific control signal, dual-screen display means for receiving the output of the TV signal processing means and the output of the video signal recording and reproducing means simultaneously and displaying them on a dual screen; Key input means for inputting a recording start point and an end point of the TV signal recorded in the recording / reproducing means; recording starts in accordance with the recording start point input, ends recording in accordance with the recording end point input, and simultaneously reproduces the recorded signal. And control means for controlling the video recording and reproducing means to display.

Features of the image display method according to the present invention include a TV signal processing step of receiving a television (TV) signal and converting it into a signal for display on a screen, and when a recording end point is input when a recording start point is input and a recording medium is mounted. A recording step of recording the TV signal processed in the TV signal processing step, and when the recording is finished in the recording step, the recording medium is returned to the recording start position, the recorded content is played back, and the TV screen is turned on in the dual screen mode. And 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 reproduction is completed in the display 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 a video display device according to the present invention.

1 shows an antenna for receiving a broadcast signal, a tuner 11 for tuning a channel by tuning a plurality of RF signals received through the antenna, according to a control signal, and a tuned channel. Y / C separation unit 12 that separates signals into luminance signal T and color signal C, and analog / converting luminance and color signals separated by Y / C separation unit 12 into digital signals, respectively. A digital converter (Analog / digital converter (ADC)) 13 and a luminance signal Y, a color difference signal U, by removing the luminance signal from the digital signal converted to the two color difference signals (U, V) The digital video processing unit 4 outputting to V), the microcomputer 15 controlling the tuning of the tuner 11 and the signal processing of the digital video processing unit 14, and the YUV signal of the digital video processing unit 14 are analog signals. After converting the signal to a high frequency signal, it is output to the RF input terminal of the recording / playback apparatus 17. A video recording / playback device (17) and a base reproduced by the video recording / playback device (17) for recording and reproducing the output of the DAC and IF echo (16), the DAC and the RF encoder (16) according to a user's key input. A converter 18 for converting an RGB signal, which is a baseband signal, into a YUV signal, and the YUV signal of the digital video processor 14 and the YUV signal of the converter 18 under the control of the microcomputer 15. A dual screen generator 19 for generating a dual screen signal and a DAC 20 for converting the signal of the dual screen generator 19 into an analog signal and outputting the signal to a television screen.

In FIG. 1, the apparatus for recording and reproducing an image corresponds to a device capable of recording and reproducing an image such as a VCR, a digital video disc (DVD), a memory IC, a disc recording and reproducing apparatus, and the present invention. VCR is taken as an example.

2 is a flowchart for performing an image display method according to the present invention.

The present invention can interface the TV and the VCR as shown in FIG. 3 to display the currently received TV signal and the past image recorded in the VCR on a dual screen, and as shown in FIG. 4, an integrated TV VCR (TVCR) By using the dual-screen display, the TV signal currently received and the recorded past image can be displayed.

In addition, the dual screen generating unit 19 may configure the dual screen as the left screen and the right screen as shown in FIG. 5, or as the main screen and the sub picture (Picture In Picture) as shown in FIG. You may.

The left and right screens as shown in FIG. 5 are suitable for wide TVs having a ratio of 16: 9, and the main and sub screens as shown in FIG. 6 are suitable for general TVs as 4: 3.

At this time, the image displayed on the left and right screens as shown in FIG. 5 and the main and sub screens as shown in FIG. 6 and the screen switching are selected by the user.

In addition, although the signal reproduced and output from the video recording and reproducing apparatus is a past image, the signal may be reproduced in the standard mode, but the present invention will be described with reference to the case of reproducing 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 tunes one channel under the control of the microcomputer 15 and outputs it to the Y / C separation unit 12. The Y / C separator 12 separates the composite video signal of the channel tuned by the tuner 11 into a luminance signal Y and a color signal C through a filter process using correlation in the spatial domain, and converts the ADC 13 into an ADC 13. ) Converts the separated luminance signal Y and color signal C into digital signals and outputs them to the digital video processor 14.

The digital video processing unit 14 completely removes the luminance component from the color signal C converted to digital under the control of the microcomputer 15 to form two color difference signals U and V, and then generates the luminance and color difference signals YUV. Are output to the DAC and IF echoers 16 and the dual-screen generator 19.

The DAC and RF encoder 16 converts the YUV signal back into an analog signal and then RF encodes 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 which is a baseband signal.

The RGB signal is converted into a YUV signal by the converter 18 and then output to the dual screen generator 19.

That is, when the portion that the user wants to see again during the TV reception is displayed, the user inputs the slow mode designation key by using a key input means (not shown) such as a remote controller or the like (step 201).

When the slow mode designation key is input in step 201, when the VCR 17 is in the standby mode (Sandby), the VCR 17 is automatically turned on (step 202), and it is determined whether a tape is loaded in the deck ( Step 203).

If it is determined in step 203 that the tape is not loaded, a message indicating that there is no tape is turned on to notify the user by turning on the On Screen Display (OSD) function and ending the program (step 204).

If it is determined in step 203 that the tape is loaded, the VCR 17 records the video information received from the RF input terminal through the TV on the tape (step 205).

Then, it is determined whether the recording end key is input by the user while recording the video information on the tape (step 206).

When the recording end key is input by the user, the recording ends, and the tape is rapidly rewinded to the beginning of the recording (step 207). If it is determined that the recording end key has not been entered, the steps 205 and 206 are repeated to repeat the recording. Recording continues until key is input.

When the tape returns to the beginning of recording in step 207, the tape is played and at the same time the dual screen mode is turned on so that the screen is switched to the dual screen (step 208).

That is, the dual screen generation unit 19 generates the YUV signal of the digital video processing unit 14 and the YUV signal of the conversion unit 18 as a dual screen signal under the control of the microcomputer 15.

Here, the dual screen signal may be a left and right screen signal as shown in FIG. 5, or may be a main or sub picture signal as shown in FIG.

At this time, the YUV signal output from the converting unit 18 transmits the VCR itself slow motion to the signal selected in the slow mode.

In other words, if 30 frames (based on the NTSC method) are played back in the normal mode, 30 frames are played back in 3 seconds while the slow speed of the VTR head drum is read slowly.

The detailed operation of the dual screen generator 19 is already known, and thus detailed description thereof will be omitted.

The normal screen signal of the TV generated by the dual screen generation unit 19 and the slow motion screen signal transmitted from the VCR are converted into the screen dual video signal and then transferred to the screen of the TV via the DAC 20.

Accordingly, the normal signal of the TV currently received and the slow motion signal reproduced through the VCR are simultaneously displayed on two screens of the TV screen divided into the left, right screen, or main and sub screens.

At the same time, it is judged whether or not the reproduction of the video signal recorded on the tape of the VCR 17 has ended (step 209). If it is determined that the reproduction is not finished, the process returns to the step 208 and the slow motion reproduced with the TV signal which is continuously received on the dual screen. If it is determined that the signal is displayed and playback is finished, the dual screen generation 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 may simultaneously display a first broadcast signal tuned through a tuner of a TV and a second broadcast signal tuned through a tuner of a VCR on a dual screen, for example, a left screen, a right screen, or a main screen and a sub screen.

The first and second broadcast signals may be the same channel or different channels. The first and second broadcast signals may be different from each other. The switching of the left and right screens or the switching of the main and sub-screens may also be selected by the user.

As described above, according to the video display device and method according to the present invention, if there is an image to be viewed again while receiving and displaying a TV signal by automatically interfacing the TV and the video recording / reproducing device, it is automatically designated. By recording and playing back only the part designated by, and simultaneously displaying the image currently received through the double window, the user can record and play the designated part and switch and display the dual part by a simple operation process. It is convenient for users, and the cost is reduced because only one tuner of the TV is required for dual screen display.

Claims (7)

TV signal processing means for receiving a television 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; Dual-screen display means for receiving the current video signal of the TV signal processing means and the past video signal of the video signal recording and reproducing means simultaneously and displaying them on a dual screen, and the recording start and end points of the TV signal recorded on the video recording and reproducing means. And a control means for controlling the video recording and reproducing means to start recording according to the recording start point input and end recording according to the recording end point input and simultaneously reproduce the recorded signal to display an image. Video display device, characterized in that configured. The video display device of claim 1, wherein the past video reproduced by the video recording / reproducing means is a slow motion signal. The video display device of claim 1, wherein the dual screen display unit comprises a dual screen including a left screen and a right screen. The video display device of claim 1, wherein the dual screen display means comprises a dual screen consisting of a main screen and a sub-screen. A TV signal processing step of receiving a television signal and converting it into a signal for display on a screen; and if the recording start point is input and a recording medium is mounted, the TV signal processed in the TV signal processing step until the recording end point is input. In the recording step of the recording, and when the recording is terminated in the recording step, the recording medium is returned to the recording start position and the recorded content is played back and the dual screen mode is turned on to process the signal reproduced on the dual screen in the TV signal processing step. And a display step of displaying simultaneously with the TV signal, and turning off the dual screen when playback is completed in the display step. The image display method according to claim 5, wherein the signal reproduced and displayed in the display step is a slow motion signal. 6. The image display method according to claim 5, wherein the dual screen off step maintains a recording / playback device that records / reproduces a TV signal at the same time as turning off the dual screen.