KR19980028144A - Video Multiscreen Processing Unit of Television - Google Patents

Abstract

The present invention relates to a multi-screen video processing apparatus of a television, wherein a single tuner 36 for tuning a channel and tuning data for a channel to be tuned are read from a tuning data memory and applied to the tuner 36. In a television that reproduces a broadcast signal of a tuned channel and displays it on the CRT device 50 via the image output unit 48, a video signal of a plurality of channels is displayed on the CRT device 50 in the form of a video. Remote control 30 for setting a video multi-screen display mode and a plurality of channels to set the mode to enable the control, and a control unit for controlling the video multi-screen processing of the selected channel and the selected channel in the video multi-screen display mode (32), counting the output of the synchronization signal detection unit 38 for detecting a horizontal / vertical synchronization signal in the video signal from the tuner 36, and switching the tuning data to the control unit 32; A counter 40 for applying a miming signal, a tuning data switching unit 42 for switching the tuning data of the plurality of channels to the tuner 36 under the control of the control unit 32, and the tuner 36. A video processor 44 for reproducing a video signal of a second channel among the plurality of channels tuned by the video signal, and a video signal of the second channel and a video signal of the first channel processed by the video processor 44; Including a multi-screen processing unit 46 for screen processing, by applying a plurality of channel selection data to the tuner 36 by switching to implement a multi-screen video, in the case of a television with a two-tuner Switching data of multiple channels to the tuner is used to realize a 4-part multi-screen video.

Description

TV's moving picture multi-screen processing device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen video processing apparatus of a television. More specifically, two-channel or four-channel tuning data is switched by frame unit of a video signal in a one-tuner or two-tuner television. Another aspect of the present invention relates to a moving image multi-screen processing apparatus for television for multi-screen processing of a video signal of four channels.

As is well known, according to a television which reproduces a broadcast signal propagated through a radio wave or a wired cable from a broadcast station, when a channel allocated to a specific broadcast station is tuned, a broadcast program organized by the broadcast station of the tuned channel The video signal and the audio signal are reproduced and delivered to the viewer.

1 is a block diagram of a general television, in which reference numeral 10 denotes a remote controller applied to a remote control of a corresponding television, and 12 denotes a remote controller corresponding to a control signal transmitted remotely by the remote controller 10. A control unit made of, for example, a microcomputer in charge of the overall control of the television, and 14 denotes a specific channel by the remote controller 10 in the state in which tuning data for all channels selectable by the remote controller 10 is registered. When tuning is performed, the control section 12 accesses and selects a tuning data memory for accessing and reading tuning data corresponding to the channel.

Reference numeral 16 denotes a tuner which tunes to the tuning data of a specific channel applied by the control unit 12, extracts a broadcasting signal transmitted to the channel to be tuned, and converts and outputs an intermediate frequency (IF). .

18 and 20 are voices to be reproduced based on the voice signal processing mode (for example, volume adjustment, voice multiple mode, etc.) set by the remote controller 10 with respect to the voice signal IF-converted and applied by the tuner 16. An audio output unit which amplifies the audio signal processed by the processing unit and its audio processing unit 18 and applies it to a speaker device (not shown) for reproduction and output.

22 and 24 are based on the processing mode (e.g., adjusting brightness, contrast, color amount, color purity, etc.) of the video signal set by the remote controller 10 with respect to the video signal applied by IF conversion in the tuner 16. An image processing unit for reproducing and an image output unit for applying a video signal processed by the image processing unit 22 to a CRT apparatus (not shown) to display the screen.

1 to 26 show that the audio / video processing mode and processing status and / or changing channel are controlled under the control of the control unit 12 when changing the channel or setting the specific audio / video processing mode by the remote controller 10. The OSD processing unit generates an on-screen display (OSD) signal for screen display and applies it to the image processing unit 22.

Therefore, in the television, when a remote control signal for tuning of a specific channel is transmitted to the control unit 12 while the power is turned on by the remote controller 10, the control unit 12 controls the OSD processing unit 26. The OSD signal of the channel number generated by the OSD processor 26 is applied to the image processor 22.

In addition, the control unit 12 reads out tuning data for the channel to be tuned from the tuning data memory 14 and applies it to the tuner 16. Therefore, the tuner 16 extracts the IF signal of the channel tuned to the channel data and outputs the IF signal. The IF signal is then applied to the audio processor 18 and the image processor 22.

The voice processor 18 reproduces only the voice signal from the broadcast signal based on the voice processing mode set by the remote controller 10 and applies the voice signal to the speaker device through the voice output unit 20 to reproduce the voice. Will be done.

At the same time, the image processor 22 reproduces only the video signal from the IF-converted broadcast signal based on the image processing mode set by the remote controller 10 and is applied by the OSD processor 26. The OSD signal for the channel number is mixed and applied to the CRT apparatus through the image output unit 24. Accordingly, the image signal of the changed channel and the channel number are displayed on the CRT apparatus.

However, in the television shown in Fig. 1, only a single tuner 16 is employed to tune a channel, so that the tuner 16 typically allows only a single channel to be tuned and transmitted to that channel. The image of the broadcast signal to be displayed is displayed as a moving image on the CRT device, so that moving pictures for a plurality of channels are usually impossible for a single channel.

In view of such a situation, in recent years, the main screen and the sub picture are picture-in-picture on a CRT device by two channel tuning corresponding to the tuning data applied to each tuner by applying the two-tuner method. Displayed two-tuner television is proposed.

However, even in the two-tuner television, although the video signal of the channel selected by each tuner can be displayed as a video, each tuner processes the video signal for a plurality of channels as a video, for example, CRT. It is not possible to process 4 divisions of multi screen on the device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. The main object of the present invention is to switch multiple channels of preset data at predetermined intervals under the control of a control means in a television equipped with a single tuner, so that a video signal of multiple channels is provided on a CRT apparatus. Disclosed is a video multi-screen processing apparatus for a television to be displayed in a video.

Another object of the present invention is to switch a plurality of channel preset data to a predetermined period for each tuner under a control of a control means in a television equipped with a two-tuner so that a video signal of up to four channels can be displayed on a CRT apparatus in a moving picture. The present invention provides a video multi-screen processing apparatus for a television.

In order to achieve the above object of the present invention, according to the first preferred embodiment of the present invention, a single tuner for tuning a channel and tuning data for a channel to be tuned are read out from a tuning data memory. A television for reproducing and processing a broadcast signal of a tuned channel applied to a screen to be displayed on a CRT device by means of a video output means, wherein a mode is set for displaying a video signal of a plurality of channels on the CRT device in a video format. Means for setting a video multi-screen display mode and a plurality of channels, control means for controlling video multi-screen processing of the set multiple channels and the selected channel in the video multi-screen display mode, and a video signal from the tuner. Counts the output of the synchronization signal detecting means for detecting the horizontal / vertical synchronization signal at Counter means for applying a switching timing signal, Switching means for switching the channel data of the plurality of channels to the tuner under the control of the control means, Image for the second channel of the plurality of channels tuned by the tuner A video multi-screen processing apparatus for a television comprising a video processing means for reproducing a signal and multi-screen processing means for multi-screen processing a video signal of a second channel and a video signal of a first channel processed by the video processing means. Is provided.

Preferably, the counter means is configured to perform counting in the frame unit or the field unit of the video signal, and the control means switches the switching means in accordance with the count result in the frame unit or field unit of the counter.

In order to achieve the above object of the present invention, in accordance with a second preferred embodiment of the present invention, a two-tuner for tuning a channel and tuning data for a channel to be tuned are read from a tuning data memory to the tuner. A television for selectively applying and reproducing a broadcast signal of a tuned channel to display on a CRT device by means of a video output means, wherein the video signal of a plurality of channels is displayed on the CRT device in a video format. Means for setting a video multi-screen display mode and a plurality of channels to be set, control means for controlling the video multi-screen processing of the set multiple channels and the selected multiple channels in the video multi-screen display mode, and from the tuner Counting the output of the first and second synchronous signal detecting means for detecting the horizontal / vertical synchronous signal from the video signal; First and second counter means for applying the switching timing signal of the tuning data to the means, and first and second switching means for switching the channel data of the plurality of channels to the two-tuner under the control of the control means. First and second image processing means for reproducing the video signal for each sub-channel among the plurality of channels tuned by the tuner, and the video signal of the sub-channel processed by the video processing means and the video signal of the main channel. First and second multi-screen processing means for processing a video multi-screen, and the video multi-screen signal processed by the first and second multi-screen processing means are synthesized to form an image signal to be displayed on the CRT apparatus. Provided is a video multi-screen processing apparatus for a television including a screen forming means.

Preferably, the first and second counter means are configured to count the video signal of the channel tuned in each tuner in units of frames or fields, and the control means is in units of frames of the first and second counters. Alternatively, the first and second switching means are switched according to the count result in field units.

According to the video multi-screen processing apparatus for a television according to the present invention having the above-described configuration, in a television having a one-tuner or a two-tuner, switching data of a plurality of channels is applied to each tuner in a switchable manner. The video signal of the tuning channel is processed into a moving picture multi-screen.

1 is a block diagram illustrating a configuration of a general television;

2 is a block diagram of an image processing system of a moving image multi-screen processing apparatus of a 1-tuner television according to a first embodiment of the present invention;

FIG. 3 is a diagram showing an example of screen display by a moving image multi-screen processing apparatus of a 1-tuner television according to the first embodiment of the present invention shown in FIG.

4 is a block diagram of an image processing system of a moving image multi-screen processing apparatus of a two-tuner television according to a second embodiment of the present invention;

FIG. 5 is a diagram showing an example of screen display by a moving image multi-screen processing apparatus of a two-tuner television according to the second embodiment of the present invention shown in FIG.

* Explanation of symbols for main parts of the drawings

10,30,60: Remote control 30a, 60a: Mode setting button

36,68,78: tuner 32,62: control unit

34, 64: Tuning data memory 38, 70, 82: Synchronization signal detection unit

40,72,84: counter 44,74,86: image processor

46,76,88: Multi screen processing unit 48,92: Video output unit

50,94: CRT device 90: multi-screen forming unit

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

2 is a block diagram of an image processing system of a moving image multi-screen processing apparatus of a television according to a first embodiment of the present invention.

In the figure, reference numeral 30 denotes a remote control for remotely controlling the overall function of a corresponding television. According to the present invention, the remote control 30 has a moving picture for a video signal of a plurality of channels (i.e., two channels in this embodiment). The mode setting button 30a for setting the multi-screen processing function is provided.

32 executes control of the television in response to a function set by the remote controller 30, and switches the channel data of a plurality of channels (i.e., two channels) when the mode setting button 30a is operated. And a control unit which controls the video signal of a plurality of channels to be reproduced in a moving picture multi-screen form.

34 denotes a tuning data memory in which tuning data for all channels assumed by the control unit 32 and accessible by the control unit 32 is stored.

36 performs tuning of a broadcast signal corresponding to one channel or two channel tuning data applied from the control unit 32 and performs IF (Intermediate frequency) conversion on the tuned broadcast signal to convert the IF / converted audio / video signal. Indicates the tuner provided.

In Fig. 2, reference numeral 38 denotes a sync signal detector for detecting a horizontal / vertical sync signal from a video signal of a channel tuned by the tuner 36, and 40 denotes a horizontal / vertical signal detected by the sync signal detector 38. A counter for counting vertical synchronization signals is applied to the control unit 32 to determine the switching timing of preset data.

42 is switched by the control signal SW of the control unit 32 while the video multi-screen processing mode is set by the mode setting button 30a of the remote control unit 30. A tuning data switching unit which serves to apply tuning data CHA, CHB alternately to the tuner 36 is shown.

In FIG. 2, reference numeral 44 denotes an image IF signal CV2 of the second channel applied from the tuner 36 when the multi-screen processing mode is set by the mode setting button 30a of the remote controller 30. For example, an image processing unit which performs playback processing based on an image processing mode (eg, luminance, contrast, color amount, color purity, etc.) set by the remote controller 30 is shown.

In the normal image processing mode, 46 reproduces and processes the video IF signal CV1 of the first channel applied from the tuner 36, while the moving picture multi-screen processing mode is activated by the mode setting button 30a of the remote controller 30. Is set by the control unit 46 and is activated by the image processing unit 44, the image IF signal (CV2; sub image signal) of the second channel and the image of the first channel applied by the tuner 36. The multi-screen processing unit for multi-processing the signal CV1 (the main video signal) in a moving picture is shown. The multi-screen processing unit 46 is commercially available, for example, in the form of dimension conversion of the sub video signal on the main video signal. It consists of model name 'SAB 9076H controller'.

In addition, 48 in FIG. 2 shows an image output unit which displays a screen by applying an image signal of a first channel or a second channel applied from the multi-screen processing unit 46 to the CRT apparatus 50.

According to the video multi-screen processing apparatus for a television according to the first embodiment of the present invention, when the channel selection is performed from the remote controller 30 in the state where the video multi-screen mode is not set, the controller 32 Tuning data memory 34 reads tuning data allocated to the channel to be tuned to and is applied to the tuner 36. IF conversion processing of the channels tuned by the tuner 36 is performed based on the tuning data. The audio signal is reproduced in a speech processing system (not shown in FIG. 2) and reproduced and output through a speaker device (not shown).

The IF-converted video signal CV1 of the channel tuned by the tuner 36 is reproduced by the multi-screen processor 46 based on the image processing mode set by the remote controller 30, and the reproduced process is performed. The image signal is applied to the image output unit 48, amplified, and then displayed on the CRT apparatus 50 in a known manner.

On the other hand, when the channel selection is performed by the mode setting button 30a of the remote controller 30 in the state where the video multi-screen processing mode is set, the control unit 32 selects the channel assigned to the channel to be tuned. The data is read from the tuning data memory 34, and the tuning data switching unit (1) is first applied so that tuning data CHA of the first channel, for example, of the plurality of tuning channels is read out, to the tuner 36. 42, a control signal SW is applied.

Therefore, the tuner 36 extracts an image signal transmitted to the first channel, and performs IF conversion processing on the multi-screen processing unit 46 for reproduction. The video signal of the first channel is applied to the multi-screen processing unit 46 which is activated under the control of the control unit 32, and processed to be displayed on the first screen display area 50a of FIG. Through 48, it is applied to the CRT apparatus 50.

The horizontal / vertical synchronous signal included in the image IF signal of the first channel to be IF-modulated by the tuner 36 while the reproduction processing is performed on the image signal of the first channel is applied to the synchronization signal detection unit 38. As applied and detected, the detected horizontal / vertical synchronization signal is applied to the counter 40 so that the period or frame period of the odd field / excellent field (ie, each odd field / excellent field is 1/60 sec. One frame is composed of the odd field and the even field, and the count of 1/30 sec) is performed.

Subsequently, the count result of the counter 40 is applied to the control unit 32 as a switching timing signal from the channel selection data of the first channel to the channel selection data CHB of the second channel applied to the tuner 36. Accordingly, the controller 32 applies a control signal SW to the channel data switching unit 42 to control the channel data CHB of the second channel to be applied to the tuner 36.

Accordingly, in the tuner 36, the image IF signal CV2 of the channel corresponding to the channel selection data CHB is applied to the image processing unit 44 and reproduced, and then applied to the multi-screen processing unit 46. The multi-screen processor 46 displays the video signal CV2 of the second channel from the image processor 44 in response to the control signal CS applied from the controller 32. The video signal of the first and second channels is processed in a multi-screen form, and the multi-screen video signal is processed through the video output unit 48 by the CRT apparatus 50. ) Will be displayed.

That is, according to the first embodiment of the present invention, the control unit 32 supports the synchronization signal detection unit 38 and the counter 40 so that the channel selection data CHA, CHB of the plurality of channels is converted into the channel selection data switching unit ( 42) to be applied to the tuner 36 in a field period or a frame period, and accordingly, the multi-screen processor 46 and the image signal CV2 of the second channel applied from the image processor 44 The image IF signal CV1 of the first channel applied by the tuner 36 is multi-screen processed. That is, since the multi-screen processing unit 46 processes the first and second video IF signals CV1 and CV2 applied in the field period or the frame period, the CRT apparatus in the form of a video is generated by the visual afterimage of the viewer. It is displayed on (50) (i.e., see FIG. 3).

FIG. 4 is a block diagram of an image processing system of a video multi-screen processing apparatus of a television according to a second embodiment of the present invention. In the first embodiment shown in FIG. 3, a plurality of tuners are employed by employing a single tuner. Although the video signal of two channels, i.e., two channels, is processed as a multi-screen video, in the second embodiment shown in FIG. 4, the video signal of a plurality of channels (ie, four channels) is displayed on a video by a two-tuner. Will provide configuration.

That is, in the second embodiment of the present invention shown in FIG. 4, reference numeral 60 is provided with a mode setting button 60a for processing video images of a plurality of channels (that is, four channels in this embodiment). A remote control for remotely controlling the overall function of the television set, and 62 denotes a plurality of channels (i.e., operation of the mode setting button 60a) while controlling the television on the basis of the function set in the remote control 60; (4 channels) is applied to switch the switching data to switch the video signal of a plurality of channels in a moving picture multi-screen form.

64 denotes a tuning data memory accessed by the controller 62 when the tuning data for all channels assumed in the corresponding television is stored and the channel is designated by the remote controller 60.

66 and 80 are switched from the control unit 62 while being switched by the control signal SW of the control unit 62 while the video multi-screen processing mode is set by the mode setting button 60a of the remote control unit 60. A tuning data switching unit which functions to apply tuning data (CHA, CHB; CHC, CHD) of a channel to the corresponding first and second tuners 68 and 78 alternately. That is, the first and second tuners 68 and 78 are tuned to one channel (main channel) / 2 channels (subchannel) (CHA, CHB; CHC, CHD) correspondingly applied by the control unit 62, respectively. Tuning of the broadcast signal corresponding to the data and IF (Intermediate frequency) conversion of the tuned broadcast signal are performed to provide the IF-converted audio / video signal.

70 and 82 are provided to correspond to the rear ends of the first and second tuners 68 and 78 to detect horizontal / vertical synchronization signals from the image signals of channels tuned by the corresponding tuners 68 and 78. FIG. 1 and 2 synchronous signal detectors, 72 and 84 correspond to the first and second synchronous signal detectors 70 and 82, respectively, to detect horizontal and vertical synchronous signals detected by the synchronous signal detectors 70 and 82, respectively. First and second counters for counting signals and generating the count results as switching timing signals of channel selection data (CHA, CHB; CHC, CHD) by the control unit 62 are shown.

74 and 86 are installed in correspondence with the first and second tuners 68 and 78, and the video signals of the channels tuned by the first and second tuners 68 and 78 while the video multi-screen processing mode is set. First and second image processing units for reproducing (CV2: CV4) are shown.

Also, 76 and 88 display the video signals CV1 and CV3 of, for example, the first and third channels (main channels) applied from the corresponding first and second tuners 68 and 78 in the normal image processing mode. On the basis of the image processing mode (e.g., adjustment of brightness, contrast, color amount, color purity, etc.) set at 60, playback processing is linked to the next stage, while the mode setting button 60a of the remote controller 60 is used. When the moving image multi-screen processing mode is set, the first and third image IF signals CV1 and CV3 are controlled by the control signals CS1 and CS2 of the controller 62 and applied from the corresponding tuners 68 and 78. ) And a multi-screen processing unit for moving images multi-screen processing of the second and fourth image IF signals CV2 and CV4 applied from the corresponding image processing units 74 and 86, which are first and second. The screen processing units 76 and 88 are commercially available, for example, on the main video signal. Model is a bracket of a video signal processor to resize a form as possible consist of '9076H SAB controller.

In addition, in FIG. 4, 90 denotes a video multi-screen form by synthesizing the first and second video signals applied by the first and second multi-screen processing units 76 and 88 and the third and fourth video signals. The multi-screen forming unit 90 is configured to include a phase locked loop (PLL) circuit and a line memory, and to apply a known pixel omission and interpolation process. The video screens of the first and second channels formed by the screen processor 76 and the video screens of the third and fourth channels formed by the second multi-screen processor 88 are reconstructed to be synthesized in the form shown in FIG. 5. It has the effect of doing.

Also, 92 denotes an image output unit for displaying the moving image multi-screen formed by the multi-screen forming unit 90 on the CRT apparatus 94.

Next, the operation of the moving picture multi-screen processing apparatus of the television according to the second embodiment of the present invention will be described.

First, when tuning of a specific channel is performed from the remote controller 60 in the state that the video multi-screen mode is not set, the controller 62 selects tuning data allocated to the channel of the tuning target in the tuning data memory 34. Read and apply to the first tuner 68, for example, and the IF-converted voice IF signal of the channel tuned by the first tuner 68 based on the tuning data is a voice processing system (not shown in FIG. 4). Is reproduced and output through a speaker device (not shown).

In addition, the IF-converted video signal CV1 of the channel tuned in the first tuner 68 is based on the video processing mode set by the remote controller 60 in the first multi-screen processor 76. After the reproduction process, the image signal of the channel which is passed through the multi-screen forming unit 90 and applied to the image output unit 92 and amplified by the image output unit 92 is known on the CRT apparatus 94. In the same way.

On the other hand, when a plurality of channels (that is, four channels) are sequentially tuned in the state where the video multi-screen processing mode is set by the mode setting button 60a of the remote controller 60, the control unit 62 selects the target to be tuned. Tuning data (CHA, CHB, CHC, and CHD) allocated to the channel of < Desc / Clms Page number 12 > are read from the tuning data memory 34 and applied to the first and second tuning data switching units 66 and 80. In this state, the control unit 62 applies control signals to the first and second channel data switching units 66 and 80, for example, to select channel (CHA, CHC) channels of the first channel and the third channel (main channel). ) Is applied to the corresponding first and second tuners 68 and 78 via corresponding first and second tuning data switching units 66 and 80.

Therefore, the first tuner 68 extracts the video signal transmitted through the first channel, and performs IF conversion processing to the first multi-screen processor 76 for reproduction. In step 78), the video signal transmitted through the third channel is extracted, subjected to IF conversion, and applied to the second multi-screen processor 88 for reproduction.

In addition, the video IF signals CV1 and CV3 of the first and third channels output from the first and second tuners 68 and 78 are applied to the synchronization signal detection units 70 and 82 to be horizontal / vertical. The synchronization signal is separately detected, and the detected horizontal / vertical synchronization signal is applied to the corresponding first and second counters 72 and 84 and counted. That is, in the first and second counters 72 and 84, the period or frame period of the odd field / excellent field of the video signal transmitted on the first and second channels (that is, each odd field / excellent field is 1 / 60th). A period of sec, one frame includes a radix field and an even field, and a count of 1/30 sec) is performed, and the result of the count is a first applied to the first and second tuners 68 and 78. The switching timing signal from the channel selection data of the channel to the channel selection data CHB of the second channel and the switching timing signal of the channel selection data of the third channel to the tuning data of the fourth channel are applied to the control unit 62.

Accordingly, the controller 62 applies control signals to the first and second channel data switching units 66 and 80 so that the channel data CHB of the second channel is applied to the first tuner 68. In addition, the channel selection data CHD of the fourth channel is controlled to be applied to the second tuner 78.

Accordingly, in the first and second tuners 68 and 78, the image IF signals CV2 and CV4 of the second and fourth channels (subchannels) corresponding to the channel selection data CHB and CHD are corresponding to the corresponding first. And the second and second multi-screen processing units 76 and 88, which are applied to the second image processing units 74 and 86 and reproduced and then applied to the corresponding first and second multi-screen processing units 76 and 88, respectively. In response to the control signals CS1 and CS2 applied by the controller 62, the controller 88 outputs the image IF signals CV2 and CV4 from the first and second image processors 74 and 86, respectively. The video IF signal CV1 and the video signal CV4 of the third channel are inserted into a multi-screen form.

Subsequently, multi-screen signals of the first and second channel image signals processed by the first and second multi-screen processing units 76 and 88 and the video signals of the third and fourth channel signals are multiplied by the multi-screen forming unit 90. ) Is formed into a screen display form illustrated in FIG. 5 by a known screen compression and interpolation process, and the multi-screen processed video signal is displayed on the CRT apparatus 94 through the video output unit 92. It is displayed in the form illustrated in 5.

Here, the video signals of the first to fourth channels are switched and tuned in a field unit or a frame unit under the control of the controller 62, and then the first multi-screen processing unit 76 performs video signals of the first and second channels. The multi-screen processing is performed, and the second multi-screen processing unit 88 multi-screens the video signals of the third and fourth channels so that the multi-screen forming unit 90 synthesizes the multi-screen processing. The video signal of each channel displayed on the first to fourth screen display areas 94a to 94d of the image is observed in the form of a moving picture by the visual afterimage effect of the viewer.

Meanwhile, in the second embodiment of the present invention, a process of forming a 4-split moving picture screen by applying switching data of multiple channels to the 2-tuner in a switching manner has been described, but according to the present invention, It is a matter of course that the two-segmented moving picture implemented in the first embodiment can be displayed by applying only the tuning data for a single channel.

As described above, according to the video multi-screen processing apparatus of a television according to the present invention, two or four video multi-screens can be configured by switching the multiple or multiple channels of tuning data to a single tuner or two-tuner. This allows viewers to watch videos on multiple or multiple channels on a single screen.

Claims (4)

A single tuner 36 for tuning a channel and tuning data for a channel to be tuned are read from the tuning data memory and applied to the tuner 36 to reproduce and process the broadcast signal of the tuned channel. 48. A video multi-screen display mode and a plurality of video sets for setting a mode for displaying a video signal of a plurality of channels on the CRT device 50 in the form of a moving picture. Means (30) for setting a channel, control means (32) for controlling the preset multi-channel selection in the video multi-screen display mode, and video multi-screen processing for the tuned channel, and the image from the tuner (36). Counter means 40 for counting the output of the synchronous signal detecting means 38 for detecting the horizontal / vertical synchronous signal in the signal and applying it to the control means 32 as a switching timing signal of the station data. Switching means 42 for switching the tuning data of the plurality of channels to the tuner 36 under the control of the stage 32, and for the second channel of the plurality of channels tuned by the tuner 36. Image processing means 44 for reproducing the video signal and multi-screen processing means 46 for multi-screen processing the video signal of the second channel and the video signal of the first channel processed by the video processing means 44; Video multi-screen processing apparatus for a television, characterized in that configured to include. 2. The counter unit 40 according to claim 1, wherein the counter means 40 is configured to perform counting in units of frames or fields of the video signal, and the control means 32 counts in units of frames or fields of the counter 40. And the switching means is switched according to the result. The first and second tuners 68 and 78 for channel tuning and the tuning data for the channel to be tuned are read from the tuning data memory 64 and selectively applied to the tuners 68 and 78 for tuning. In a television for reproducing and processing a broadcast signal of a channel to be displayed on the CRT apparatus 94 via the image output means 92, the video signals of a plurality of channels are displayed on the CRT apparatus 94 in a moving picture format. Means for setting a video multi-screen display mode and a plurality of channels for setting a mode to control the video; and control for controlling video multi-screen processing of the preset multiple channels and the selected multiple channels in the video multi-screen display mode. The control means 62 by counting the output of the first and second synchronous signal detection means 70, 82 for detecting the horizontal / vertical synchronous signal in the image signal from the tuner 68, 78; Switching tie of station data First and second counter means 72 and 84 for applying signals, and first and second channels for switching tuners 68 and 78, respectively, under the control of the control means 62; Second switching means 66 and 80, first and second image processing means 74 and 86 for reproducing an image signal for each sub-channel among a plurality of channels tuned by the tuners 68 and 78; First and second multi-screen processing means 76 for multi-screen video processing of the sub-channel video signal processed by the video processing means 74 and 88 and the video signal of the main channel from the tuners 68 and 78; 88) and multi-screen forming means for synthesizing the video multi-screen signals processed by the first and second multi-screen processing means 76 and 88 to form an image signal to be displayed on the CRT apparatus 90 ( 90. A multi-screen video processing apparatus for a television, comprising: a. 4. The apparatus of claim 3, wherein the first and second counter means (72,84) are configured to count video signals of channels tuned by the tuners (68, 78) in units of frames or fields. The control means 62 is configured to switch the first and second switching means 66 and 80 according to the count result of the frame unit or the field unit of the first and second counters 72 and 84. Television multi-screen processing device.