KR19980017765A - KBPS Screen Display on Wide Television - Google Patents

Abstract

An object of the present invention is to perform a PIP process when the KBPS mode is turned on in a wide television, and to output the KBPS screen to the sub screen at the same time as the main screen is output in the form of a horizontal compression Provided is a KBPS screen display apparatus for a television, the control signal input unit 10 for setting the KBPS mode, and when the KBPS mode is set, the PIP function is performed to process the broadcast screen being viewed and the KBPS screen of the viewing channel. Control unit 12 for controlling output to the CRT 24, and KBPS processing means 40, 42, 44, 46, 48 for outputting a YUV signal for KBPS screen configuration of a viewing channel under the control of the control unit 12; ), PIP outputting the YUV signal according to the multi-screen image by performing the multi-screen processing based on the YUV signal applied from the KBPS processing means (40, 42, 44, 46, 48) and the YUV signal for the composite video signal Processing unit 30, the PIP process An image processing unit 20 for outputting an RGB signal of a multi-screen processed image signal based on the YUV signal applied from the unit 30, and an image reproduction for amplifying and outputting the RGB signal outputted from the image processing unit 20. Means including the means 22 and 24. When the user turns on the KBPS mode, the PIP function is performed so that the screen being watched is displayed in a horizontally compressed form on the main screen and provided on the channel being watched on the sub screen. By outputting the KBPS screen indicating the sequence of the broadcast program is being able to not only provide a high-definition image of the screen being watched, but also can effectively output the KBPS screen.

Description

KBPS Screen Display on Wide Television

The present invention relates to a display device for a KBPS screen in a wide television. More specifically, when the KBPS mode is set in a wide television, a PIP (Picture In Picture) function is performed and a channel being watched as a main screen. The present invention relates to a KBPS screen display device for wide television that outputs a broadcast screen and simultaneously outputs a KBPS screen for a viewing channel so that a user can watch the KBPS screen without damaging the TV screen being watched.

As is well known, a video signal and an audio signal of a broadcast program transmitted from a broadcasting station via a wired or wireless channel are reproduced, or a video signal and an audio signal read by the video software by, for example, a video tape recorder or an optical disc playback system are reproduced. In the case of television, in order to increase the viewing efficiency, a so-called 'wide vision' has been developed in which a wide range of images can be displayed from a 4: 3 aspect ratio to a 16: 9 aspect ratio, for example.

In such a wide vision, when a viewer selects an appropriate aspect ratio according to a broadcast program having a 16: 9 aspect ratio and a 4: 3 aspect ratio, the screen is stretched in the vertical direction while controlling the horizontal syringe stem under the control of a control device such as a microcomputer. To zoom out, 4: 3 aspect ratio and 16: 9 aspect ratio switching is performed.

On the other hand, the current broadcasting station transmits code data that makes it possible to easily record or classify a program that is being broadcast by each broadcasting station in a composite video signal for video reproduction of the program, which is called 'KBPS (KOREA BROADCASTING PROGRAM). As a receiver, a television as a receiver can detect the corresponding KBPS code data from a composite video signal and use the KBPS code data for reservation recording or use it as a classification data for limited viewing of a broadcast program.

In particular, when the user turns on the KBPS mode, the user can specify a character screen, that is, a KBPS screen, on the screen being watched based on the corresponding KBPS code data transmitted from each broadcasting station. It makes it easy to check the broadcast order of broadcasting programs at broadcasting stations.

However, in the wide television, when the user turns on the KBPS mode, the KBPS screen indicating the broadcast order is output on the broadcasting screen of the channel being watched, so that the sharpness of the KBPS screen is effectively reduced in response to the screen color. Not only can not provide a screen, but also the screen being watched is also affected by the KBPS screen has a problem that the image is cut off can not provide a high-definition video.

Accordingly, the present invention has been made in view of the above-described circumstances, and when the KBPS mode is turned on in a wide television, PIP processing is performed, and the main screen is output in the form of a horizontally compressed broadcast screen as a sub screen. The purpose of the present invention is to provide a KBPS screen display device in a wide television that can output a KBPS screen.

According to an embodiment of the present invention for realizing the above object, the control signal input unit for setting the KBPS mode, and when the KBPS mode is set, the PIP function is performed to watch the broadcast screen and the KBPS screen of the viewing channel A control unit for processing the control to be output to the CRT, KBPS processing means for outputting a YUV signal for the KBPS screen configuration of the viewing channel under the control of the control unit, a YUV signal applied from the KBPS processing means and a YUV signal for the composite video signal A PIP processing unit for outputting a YUV signal according to a multi-screen image by performing multi-screen processing on the basis of the above, an image processing unit for outputting an RGB signal of the multi-screen processing video signal based on the YUV signal applied from the PIP processing unit, and Provided is a KBPS screen display device for a wide television comprising an image reproduction means for amplifying and outputting an RGB signal outputted from an image processing unit. All.

Preferably, in the present invention, the PIP processing unit is based on a horizontal / vertical / color synchronous signal outputted from the synchronous separation unit under the control of the control unit, and a synchronous separation unit for separating the horizontal / vertical / color synchronous signals from the composite video signal. A PIP screen controller for performing a control operation, a ADC operating on the basis of an enable signal applied from the PIP screen controller, and digitally converting the corresponding composite video signal, and a field for storing the composite video signal of the digital component outputted from the ADC. ½ divider for generating a predetermined switching signal (SW) based on a memory, a horizontal synchronous signal applied from the PIP screen controller, and a switching signal provided between the field memory and the KBPS processing means and applied from the ½ divider. A switch unit for performing a fast switching operation on the video signal for the broadcast screen and the video signal for the KBPS screen based on the A PIP screen forming unit for forming a video signal for multi-screen configuration based on the video signal output from the teeth, and a DAC for analog-converting the video signal output from the PIP screen forming unit.

More preferably, according to the present invention, the PIP screen controller applies a clock signal of a predetermined period to the field memory so that the digital signal pre-stored in the field memory is read in a horizontally compressed state.

According to the present invention having the above-described configuration, when the user turns on the KBPS mode in the wide television, the PIP function is performed, and the screen being watched is output in a horizontally compressed form on the main screen, and at the same time, the broadcast program is displayed on the sub screen. By outputting a KBPS screen indicating that not only can provide a high-definition image for the screen being watched, it is also possible to effectively output the KBPS screen.

1 is a block diagram of a KBPS screen display device in a wide television according to an embodiment of the present invention;

2 is a block diagram of the PIP processing unit 30 shown in FIG.

3 is a diagram illustrating an example of displaying a KBPS screen in a wide television to which the present invention is applied.

Explanation of symbols on the main parts of the drawings

10: control signal input unit 12: control unit,

14: channel data storage unit 16: tuner,

18: image IF module 20: image processing unit,

22: video amplifier 24: CRT,

30: PIP processing section 31: synchronous separation section,

32: PIP screen control unit 33: ADC,

34: field memory 35: 1/2 divider,

36: switch unit 37: PIP screen generating unit,

38: DAC40: RGB / YUV conversion unit,

42: synchronous separator 44: data slicer,

46: Memory 48: KBPS decoder.

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

1 is a block diagram of a KBPS screen display device in a wide television according to an embodiment of the present invention, 10 is a control signal input unit for controlling the setting state of the overall operation provided in the television, according to the present invention. Assuming that the control signal input unit 10 is provided with a KBPS button 10a for outputting a KBPS screen as a sub screen.

Reference numeral 12 denotes a control unit for controlling the entire apparatus in response to a control signal input from the control signal input unit 10. In the present invention, the control unit 12 is a KBPS button 10a provided in the control signal input unit 10. ) Is operated, PIP processing is carried out so that the screen of the channel being watched is output on the main screen and the KBPS screen is output on the sub screen. Apply.

Reference numeral 14 denotes a channel data storage unit for storing channel data for tuning a specific channel selected through the control signal input unit 10 among a plurality of channels, and 16 denotes a channel station applied from the controller 12. A tuner that performs a tuning operation for a specific channel among a plurality of channels received through an antenna based on the voltage VT. 18 is an IF amplified broadcast signal of a specific channel tuned by the tuner 16 and then The video IF module detects only video signals from IF-amplified broadcast signals.

Further, reference numeral 20 denotes an image signal of the broadcast signal by performing image processing, that is, color / brightness / tint / sharpness adjustment, etc. under the control of the controller 12. An image signal processing unit for outputting the RGB signal according to the present invention, in the present invention, the image signal processing unit 20 based on the YUV signal applied from the PIP processing unit 30 when setting the KBPS mode, the RGB signal of the video signal for the multi-screen Output

Reference numeral 30 denotes a multi-screen after performing a PIP process on the basis of the YUV signal for the broadcast screen being applied from the image processing unit 20 and the YUV signal for the KBPS screen applied from the RGB / YUV conversion 40. Is a PIP processing unit which generates and applies the YUV signal of the video signal for the multi-screen to the image processing unit 20.

As shown in FIG. 2, the PIP processing unit 30 separates vertical sync Vsync / horizontal sync Hsync / color sync Csync from the composite video signal of the broadcast signal applied from the video IF module 18. The enable signal ENA is applied to the ADC 33 based on the vertical / horizontal / color motion signal applied from the synchronous separation unit 31 under the control of the synchronous separation unit 31 and the control unit 12. At the same time, the clock signal CLK is applied to the field memory 34 and the horizontal synchronization signal is applied to the ½ divider 35. An analog / digital converter (ADC) 33 for digitally converting a composite video signal of a broadcast signal, a field memory 34 for storing a composite video signal of a digital component output from the ADC 33, and the PIP screen controller 32 The horizontal synchronizing signal applied from the circuit is divided into ½ and the predetermined switching signal SW is applied to the switch unit 36. The ½ frequency dividers 35 and 36 are digital signals and RGB / of the composite video signal for the TV broadcast signals read out from the field memory 34 based on the switching signal SW applied from the ½ frequency divider 35. Switch unit 36 for high-speed switching the digital signal of the KBPS screen applied from the YGB conversion unit 40, PIP screen generation unit for generating a multi-screen based on the digital signal switched and output from the switch (36) 37) and a digital / analog converter (DAC) for converting the digital signal of the multi-screen output from the PIP screen generator 37 into an analog to generate a YUV signal for the multi-screen and applying it to the image processor 20. And 38).

Reference numeral 42 in FIG. 1 denotes a synchronization separator for separating horizontal / vertical / color synchronization signals from the composite image signal output from the image IF module 18, and 44 denotes a synchronization separator 42. A data slicer for detecting KBPS code data included in a blanking period of a composite video signal output from the video IF module 18 based on the applied horizontal / vertical synchronization signal and slicing the KBPS code data, and 46 denotes the data. The memory 46 stores the KBPS code data sliced by the slicer 44. When the 'ON' signal of the KBPS mode is transmitted from the controller 12, the BLK signal becomes 'high' and the RGB / YUV conversion unit In addition to driving 40, the control unit 12 characterizes the KBPS code data read out from the memory 46 and outputs the RGB signal accordingly.

In addition, reference numeral 40 is driven by the BLK signal applied from the KBPS decoder 48 to convert the RGB signal applied from the KBPS decoder 48 into a YU (RY) V (BY) signal to YUV for a KBPS screen. It is an RGB / YUV converter for applying a signal to the PIP processing section 30.

Then, the RGB signal for the multi-screen output from the image processor 20 is amplified with a predetermined amplification and applied to the CRT 24 connected to the rear stage, and the broadcast screen being viewed as the main screen through the CRT 24. The video amplification unit outputs the KBPS screen to the sub screen.

The general operation of the wide television having the above configuration will be briefly described.

When the user selects a specific channel through the control signal input unit 10, the control unit 12 reads the channel data for a specific channel from the channel data storage unit 14 and then selects a channel corresponding to the channel data. The voltage VT is applied to the tuner 16.

The tuner 16 receiving the tuning voltage VT from the control unit 12 tunes a specific channel to be tuned among a plurality of channels received through the antenna, and the broadcast signal tuned by the tuner 16. Is applied to the image IF module 18 and IF-amplified, and then the image signal is detected and applied to the image processor 20 in the IF-amplified state.

The image processor 20 performs image processing, that is, color / brightness / tint / sharpness adjustment, etc. on the composite image signal applied from the image IF module 18 under the control of the controller 12, and then image processing. The RGB signal for the received video signal is applied to the image amplifier 22.

Accordingly, the image amplification unit 22 amplifies the corresponding RGB signal with a predetermined amplification and applies it to the CRT 24 connected to the rear stage so that the image of the broadcast signal of a specific channel is transmitted through the CRT 24 of the corresponding wide television. It is reproduced and output.

Next, the operation of the KBPS screen display device in the wide television according to the embodiment of the present invention having the above-described configuration will be described in detail.

When the user operates the KBPS button 10a configured in the control signal input unit 10 to set the KBPS mode to watch the KBPS screen as a sub-screen, the button signal according to the operation of the KBPS button 10a is controlled by the control unit. It is applied to (12).

Accordingly, when the control unit 12 transmits the KBPS mode on signal to the KBPS decoder 48, the BLK signal output from the KBPS decoder 48 to the RGB / YUB converter 40 becomes 'high' and the RGB The / YUV converter 40 is driven.

On the other hand, KBPS code data carried in the blanking period of the composite video signal based on the horizontal / vertical synchronous signal separated from the composite video signal output from the image IF module 18 by the synchronization separator 42 is the data slicer 44. Sliced into the memory 46 and stored in the memory 46. The KBPS code data stored in the memory 46 is read by the read signal CS1 applied from the controller 12. It is applied to the KBPS decoder 48.

Accordingly, the KBPS decoder 48 reads from the memory 46 and decodes the applied KBPS code data and outputs an RGB signal accordingly, and the RGB / YUV converter 40 outputs the RGB signal from the KBPS decoder 48. The applied RGB signal is converted into a YUV signal and applied to the PIP processor 30.

Meanwhile, the PIP processing unit 30 separates the horizontal / vertical / color synchronization signals from the composite image signal output from the image IF module 18 and the corresponding synchronization signal (Vsync / Hsync / Csync). Is applied to the PIP screen control unit 32, the PIP screen control unit 32 driven under the control of the control unit 12 is driven under the control of the control unit 12 and is applied from the synchronization separating unit 31. The enable signal is applied to the ADC 33 based on the synchronization signal, and the predetermined clock signal CLK is applied to the field memory 34 and the horizontal synchronization signal is applied to the ½ divider 35.

Here, the ADC 33 is enabled by the PIP screen controller 32, and digitally converts the composite video signal output from the video IF module 18 to the field memory 34, and applies the field. The memory 33 stores a digital signal for the broadcast signal applied from the ADC 33, and the field memory 33 stores the clock signal CLK signal applied from the PIP screen controller 32. The digital signal that has been read is read out. At this time, the period of the clock signal applied from the PIP screen control unit 32 is set to be applied once every two columns. This causes the data to be read out in the horizontally compressed form from the field memory 34 and the switch unit. Is applied to (36).

At the same time, the ½ divider 35 receiving the horizontal synchronization signal from the PIP screen control unit 32 outputs the switching signal SW to the switch unit 36 at intervals corresponding to ½ of the horizontal scanning line. The switch unit 36 performs a high-speed switching of a signal applied from the field memory 34 and a signal applied from the RGB / YUV converter 40 based on the switching signal SW to form a horizontal scan line. The digital signal is applied to the broadcast signal being viewed from the field memory 34 in the ½ section of the signal, and the KBPS screen applied from the RGB / YUV converter 40 is applied to the other ½ section of the horizontal scan line. Allow a digital signal to be applied.

Accordingly, the PIP screen generation unit 37 receives the video signal of the digital component switched from the switch unit 36 to PIP process to generate a multi-screen and apply it to the DAC 38 to the video signal for the multi-screen Is applied to the image processing unit 20 in the state of analog conversion.

Accordingly, the image processing unit 20 applies an RGB signal for the video signal of the multi-screen for the multi-screen to the image amplifying unit 22, and the image amplifying unit 22 converts the RGB signal into a predetermined amplification degree. By amplifying and applying to the CRT 24 connected to the rear stage, a multi-screen composed of a main screen and a sub-screen as shown in FIG. 3 is output through the CRT 24.

That is, according to the attached FIG. 3, the main screen outputs a compressed screen of the user being watched in a horizontally compressed form, and the sub screen is a KBPS for the progress of a broadcast program provided by the broadcasting station being viewed. The screen is output.

Here, when the user changes the channel being watched by manipulating the channel selection button configured in the control signal input unit 10, the broadcast screen broadcasted on the channel is output to the main screen as shown in FIG. The sub screen outputs a KBPS screen about the progress of the broadcast program provided in the changed channel.

As described above, according to the KBPS screen display device in a wide television according to an embodiment of the present invention, when the user turns on the KBPS mode, the PIP function is performed, and the main screen is output in a horizontally compressed form. At the same time, the sub screen is outputted with a KBPS screen indicating the sequence of broadcast programs provided in the channel being viewed, thereby providing a high quality image of the screen being viewed and effectively outputting the KBPS screen.

Claims (3)

A control signal input unit 10 for setting the KBPS mode, When the KBPS mode is set, the control unit 12 performs a PIP function to control the broadcast screen being viewed and the KBPS screen of the viewing channel to be multi-screened and output on the CRT 24; KBPS processing means (40, 42, 44, 46, 48) for outputting the YUV signal for the KBPS screen configuration of the viewing channel under the control of the control unit 12, PIP processing unit for outputting the YUV signal according to the multi-screen image by performing the multi-screen processing based on the YUV signal applied from the KBPS processing means (40, 42, 44, 46, 48) and the YUV signal for the composite video signal ( 30), An image processor 20 for outputting an RGB signal of a multi-screen image signal based on the YUV signal applied from the PIP processor 30; And a video reproducing means (22, 24) for amplifying and outputting the amplified RGB signal outputted from the image processing unit (20). 2. The PIP processing unit (30) of claim 1, wherein the PIP processing unit (30) separates a horizontal / vertical / color synchronization signal from a composite video signal and the synchronization separation unit (31) under control of the control unit (12). Digital conversion of the composite video signal by operating on the basis of the enable signal applied from the PIP screen controller 32 and the PIP screen controller 32 which performs a control operation based on the horizontal / vertical / color sync signal output from the PIP screen controller 32. A predetermined switching signal based on the horizontal synchronization signal applied from the ADC 33, the field memory 34 storing the digital video signal of the digital component output from the ADC 33, and the PIP screen controller 32; ½ frequency divider 35 for generating SW), a switching signal provided between the field memory 34 and the KBPS processing means 40, 42, 44, 46, 48 and applied from the ½ frequency divider 36. Based on the (SW), the video signal for the broadcast screen and the video signal for the KBPS screen are A switch unit 36 for performing a fast switching operation, a PIP screen forming unit 37 for forming a video signal for multi-screen configuration based on the image signal output from the switch unit 36, and the PIP screen forming unit ( 37. A KBPS screen display device for wide television, characterized by comprising: a DAC (38) for analog-converting the corresponding video signal outputted from (37). 3. The PIP screen control unit 32 applies a clock signal of a predetermined period to the field memory 34, and reads out a video signal of a digital component previously stored in the field memory 34 in a horizontally compressed state. KBPS screen display device for wide television, characterized in that.