KR19990043028A - Television receiver with subtitle protection for sub picture output - Google Patents

Abstract

The present invention relates to a television receiver having a caption protection function such that each output position is automatically adjusted so that the sub-screen and OSD subtitles do not overlap each other. A television receiver provided with (11); A key input unit (7, 8) for user key input, a state storage unit (45) for storing and setting the sub-screen function selection state through the key input unit (7, 8) as predetermined flag data, and a sub-screen output. On the screen according to a predetermined control signal on the basis of the sub-screen position data storage unit 40, which stores the sub-screen output position data of one position, and the sub-screen position data stored in the sub-screen position data storage unit 40. A PIP processing unit 41 for outputting a sub-screen at a predetermined position, a caption position data storage unit 42 storing the OSD subtitle output position data of the contracted first position, and stored in the caption position data storage unit 42 The OSD generator 43 outputs the video signal of the OSD subtitle to the first position according to a predetermined control command based on the position data, the caption video signal applied from the OSD generator 43 and the image processor 11. CRT by mixing video signals applied from When the flag level of the first level is set in the mixer 44 and the state storage unit 45 outputting the image, the PIP processing unit 41 and the OSD generating unit 43 are controlled to control the sub-screen and the OSD subtitle. It characterized in that it comprises a control unit 46 for executing the position adjustment function.

Description

Television receiver with subtitle protection for sub picture output

The present invention relates to a television receiver having a sub-screen output function. In particular, the sub-screen output for the sub-screen output is adjusted so that the respective output position is automatically adjusted so that the sub-screen and OSD subtitles do not overlap each other when the sub-screen is output. A television receiver with a protective function.

Recently, some commercially available television receivers (hereinafter referred to as TV receivers) have adopted a sub picture function that allows one screen to be divided and output two or more channel programs simultaneously. It shows the internal structure of the TV receiver equipped with a screen function.

In Fig. 1, reference numeral 22 denotes a first tuner TUNER for main picture channel selection, 23 denotes a first IF amplifier for amplifying an intermediate frequency (IF) signal output from the first tuner 22, and First P / S separation, for example, comprising a surface acoustic wave filter (SAW FILTER) for separating the IF signal output from the first IF amplifier section 23 into an image intermediate frequency signal PIF and an audio intermediate frequency signal SIF, respectively. 25 is a first video signal detector for detecting a video signal from the video intermediate frequency signal PIF1 separated and output from the first P / S separator 24, and 26 is a first P / S separation. The first voice signal detector is for detecting the voice signal from the voice intermediate frequency signal SIF1 which is separately output from the unit 24.

On the other hand, reference numeral 32 is a second tuner for picture in picture (PIP) channel selection, 33 is a second IF amplifying unit for amplifying the intermediate frequency signal output from the second tuner 32, 34 is For example, the surface acoustic wave, such as the first P / S separation unit 24, that separates the IF signal output from the second IF amplifier 33 into an image intermediate frequency signal PIF and an audio intermediate frequency signal SIF, respectively. The second P / S separators 35 and 36 each made of a filter detect a video signal from the video / audio intermediate frequency signals PIF2 and SIF2 separated and output from the second P / S separator 34, respectively. 2 is a video signal detector and a second audio signal detector for detecting an audio signal.

In addition, reference numeral 7 is a remote control device for remotely controlling the overall operation of the device, 8 is a receiving unit for receiving the infrared signal transmitted from the remote control device 7 and converting it into an electrical signal, 9 is this receiving unit ( A microprocessor serving as a control unit for outputting a predetermined clock signal CL and a data signal DATA for controlling the entire apparatus in accordance with a contracted code signal output from 8).

Reference numeral 20 denotes a composite video signal output from the first and second video signal detectors 25 and 35 and the first and second audio signals according to a predetermined control signal from the microprocessor 9. A switching unit for selectively switching the audio signal output from the detectors 26 and 36, respectively, reference numeral 28 denotes a voice for the main screen output from the switching unit 20 under the control of the microprocessor 90 A first audio processing unit for processing a signal, 29 is an audio amplification unit for amplifying the audio signal processed by the first audio processing unit 28 to output to the speaker 30 connected to the rear end, 27 is the switching unit 20 A second audio processing unit for processing the audio signal for the sub-screen output from the output through the headphone jack (not shown) installed in the TV main body.

On the other hand, the reference numeral 31 receives an image signal selected and output as the sub-screen image signal from the switching unit 20 based on this R ', G', B '(Red, Green, Blue) for generating the sub-screen And a PIP processing unit for outputting a blanking signal Y ', and 11 denotes a main composite image signal output from the switching unit 20 and R', G ', B output from the PIP processing unit 31. An image processor for outputting R, G, B, and luminance signals Y for main and sub picture output based on 'and blanking signal Y', and 12 denotes R, A CRT driving unit for driving the CRT 13 on the basis of G, B and the luminance signal (Y).

That is, according to the device having the above configuration, when the user selects the sub-screen output function through the remote controller 7, the microprocessor 9 controls the first tuner 22 to output the channel to the main screen. In addition to tuning the channel to be output to the sub-screen through the second tuner 32, the main picture video signal tuned by the first tuner 22 is the image processing unit 11, and The sub-screen video signal tuned by the tuner 32 is processed by the PIP processing unit 31, respectively, so that the main screen video and the sub-screen video are simultaneously output on one screen at a predetermined ratio on the CRT 13 screen. Will be.

On the other hand, when the user performs a channel change or volume control through the remote control device 7, etc. during TV viewing, the OSD subtitles for guiding the selected channel number or volume setting state are output. When the OSD subtitle is output while the screen function is selected, the sub-screen and the OSD subtitle are displayed on the screen in a state where the subtitle and the OSD subtitle are overlapped. As a result, it is difficult for the user to check the contents of the subtitle.

Therefore, when the sub-screen and the OSD subtitles are to be simultaneously output as described above, there is a need for a method of properly adjusting the output positions of the sub-screens and the OSD subtitles so that they do not overlap each other on the screen.

The present invention has been made in view of the above circumstances, and has a subtitle protection function for sub-screen output such that each output position is automatically adjusted so that the sub-screen and the OSD subtitle do not overlap each other when the sub-screen is output. The purpose is to provide a television receiver.

1 is a block diagram showing the internal structure of a conventional general sub-screen providing function television receiver.

Fig. 2 is a block diagram showing the main configuration of a television receiver equipped with a caption protection function for sub-screen output according to an embodiment of the present invention.

Fig. 3 is a diagram showing an example of caption display in a state in which a sub-screen is output;

*** Explanation of symbols for main parts of drawing ***

1 antenna 7 remote control device

8 receiver 9, 46 microprocessor

11: Image Processing Unit 12: CRT Driver

13: CRT 20: switching unit

22: first tuner 23: first IF amplifier

24: first P / S separation unit 25: first video signal detector

26: first voice signal detector 27: second voice processor

28: first voice processing unit 29: voice amplifier

30: speaker 31,41: PIP processing unit

32: second tuner 33: second IF amplifier

34: second P / S separator 35: second video signal detector

36: second audio signal detector 40: sub-screen position data storage

42: caption position data storage unit 43: OSD generation unit

44: Mixer 45: state storage unit

A television receiver having a caption protection function for sub-screen output according to the present invention for realizing the above object is an image processing unit for outputting respective video signals for screen output by processing broadcast signals tuned to the main screen and sub-screen ( 11) A television receiver having a sub picture output function; A key input unit (7, 8) for user key input, a state storage unit (45) for storing and setting the sub-screen function selection state through the key input unit (7, 8) as predetermined flag data, and a sub-screen output. On the screen according to a predetermined control signal on the basis of the sub-screen position data storage unit 40, which stores the sub-screen output position data of one position, and the sub-screen position data stored in the sub-screen position data storage unit 40. A PIP processing unit 41 for outputting a sub-screen at a predetermined position, a caption position data storage unit 42 storing the OSD subtitle output position data of the contracted first position, and stored in the caption position data storage unit 42 The OSD generator 43 outputs the video signal of the OSD subtitle to the first position according to a predetermined control command based on the position data, the caption video signal applied from the OSD generator 43 and the image processor 11. CRT by mixing video signals applied from When the flag level of the first level is set in the mixer 44 and the state storage unit 45 outputting the image, the PIP processing unit 41 and the OSD generating unit 43 are controlled to control the sub-screen and the OSD subtitle. It characterized in that it comprises a control unit 46 for executing the position adjustment function.

That is, according to the present invention having the above-described configuration, when the OSD subtitle is to be output due to the user's remote control operation while the sub-screen is being output, the control unit adjusts each output position by adjusting the sub-screen and OSD. The subtitles are not overlapped on the screen.

Next, an embodiment according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a block diagram showing an internal configuration of a television receiver equipped with a caption protection function for sub-screen output according to an embodiment of the present invention. The same reference numerals are used, and detailed description thereof is omitted.

In FIG. 2, reference numeral 45 denotes a state storage unit which stores and sets the sub-screen function selection state by the user as predetermined flag data, and 46 denotes a flag level set in the state storage unit 45 while controlling the operation of the entire apparatus. On the basis of this, a microprocessor serving as a control unit that executes the position adjustment function of the sub-screen and OSD subtitles.

Further, reference numeral 42 denotes a caption position data storage for storing the adjusted output position data of the OSD subtitle, and 43 denotes the microprocessor 46 based on the position data stored in the caption position data storage 42. Is an OSD generator for outputting an OSD subtitle at a contracted position according to a control command from reference numeral 44, and reference numeral 44 denotes a caption video signal applied from the OSD generator 43 and a video signal applied from the image processor 11; Is a mixer (MIXER) that mixes and outputs to the CRT driving unit 12.

Reference numeral 40 denotes a sub-screen position data storage for storing sub-screen output position data at the time when the sub-screen is simultaneously outputted with the OSD subtitle, and 41 denotes the sub-screen position data storage 40. The PIP processing unit outputs a sub-screen to a predetermined position on the screen according to the control signal from the microprocessor 46 based on the stored sub-screen position data.

Next, the operation of the device having the above configuration will be described.

When the sub-screen function is not selected, the microprocessor 46 controls the OSD generator 43 to output the OSD guide caption at a normal position with respect to the user's remote control operation.

When the user selects the sub picture function by operating the remote controller 7 while watching TV, the microprocessor 46 controls the PIP processing unit 41 to program the channel tuned by the second tuner 32. In addition to controlling the output to the sub-screen, by setting the flag level of the state storage unit 45 to '01', the sub-screen output state is registered.

On the other hand, when the user operates the remote control device 7 to perform key operation such as channel switching or volume control while the sub-screen is output on the screen as described above, the microprocessor 46 causes the PIP processing unit. As shown in FIG. 3, the PIP processing unit 41 outputs the data stored in the sub-screen position data storage unit 40 as shown in FIG. 3. On the basis of this, the output position of the sub-screen is adjusted to the contracted position, and the OSD generator 43 sub-screens the OSD guide subtitle according to the user's key input based on the data stored in the subtitle position data storage 42. Output to the adjusted position away from the output position.

That is, according to the above embodiment, it is possible to realize a television receiver having a subtitle protection function for the sub picture output such that each output position is automatically adjusted so that the sub picture and the OSD subtitle do not overlap each other when the sub picture is output. do.

In addition, this invention is not limited to the said Example, It can implement in a various deformation | transformation in the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, when the OSD subtitle is to be output due to the user's remote control operation while the subscreen is being output, the subscreen and the OSD subtitle are controlled by adjusting the respective output positions. Since the control is not overlapped on the screen, as a result, the OSD subtitle is obscured by the sub-screen output.

Claims (1)

A television receiver having a sub picture output function comprising an image processor 11 for processing a broadcast signal tuned to a main picture and a sub picture and outputting respective picture signals for picture output; A key input unit (7, 8) for user key input, A state storage section 45 for storing and setting the sub-screen function selection state via the key input sections 7 and 8 as predetermined flag data, A sub-screen position data storage unit 40 storing sub-screen output position data of a first position for sub-screen output, A PIP processor 41 for outputting a sub-screen to a predetermined position on the screen according to a predetermined control signal based on the sub-screen position data stored in the sub-screen position data storage 40; A subtitle position data storage unit 42 for storing OSD subtitle output position data of the contracted first position; An OSD generator 43 for outputting an image signal of an OSD subtitle to a first position according to a predetermined control command based on the position data stored in the subtitle position data storage 42; A mixer 44 for mixing the caption video signal applied from the OSD generator 43 with the video signal applied from the video processor 11 and outputting the mixed video signal on a CRT screen; When the flag level of the first level is set in the state storage unit 45, the controller 46 controls the PIP processing unit 41 and the OSD generating unit 43 to execute the position adjustment function of the sub-screen and the OSD subtitle. Television receiver with a caption protection function for the sub-screen output, characterized in that configured to include.