KR19990040054A - OSD output position control device in multi-television - Google Patents

Abstract

The present invention relates to an OSD output position control apparatus in a multi-television, comprising: an NTSC video signal processing unit 20 for reproducing and processing an NTSC video signal, and a PAL / SECAM video signal processing unit for reproducing and processing a PAL / SECAM video signal. 22) a multi-television system capable of reproducing and outputting broadcast signals of NTSC, PAL and SECAM methods; Scanning player detecting means (28, 30) for detecting a horizontal / vertical synchronization signal of the video signal of the TV broadcasting signal and detecting a scanning player of the TV broadcasting signal based on the horizontal / vertical synchronization signal; A data storage unit 34 for storing data on an OSD output position in NTSC mode and PAL / SECAM mode; On the basis of the scanning player detected by the scanning player detecting means 28 and 30, the broadcasting method of the TV broadcasting signal is determined, and the OSD output position data is read by the data storage unit 34 based on the determination result. A control unit 12 for adjusting the output position of the OSD text based on the OSD output position data; The OSD processor 36 generates an OSD text signal based on the character data previously stored under the control of the controller 12 and applies it to the NTSC video signal processor 20 or to the PAL / SECAM video signal processor 22. It is configured to further include, so that according to the broadcast method of the broadcast signal received from the multi-television that the multi-television broadcast method is automatically converted and the output position of the OSD output on the CRT can be adjusted.

Description

OSD output position control device in multi-television

The present invention relates to an OSD output position control device in a multi-television, and more particularly, according to the broadcasting method of the broadcast signal received in the multi-television which can receive the NTSC broadcast method, PAL broadcast method and SECAM broadcast method. The present invention relates to an OSD output position control device in a multi-television system in which a broadcasting method of a multi-television is automatically converted and an output position of an OSD output on a CRT can be adjusted.

As is well known, the terrestrial broadcasting TV transmission system is classified into SYSTEM M, B / G, D / K, I, L, etc. according to the synchronization signal characteristics by CCIR REPORT, and also NTSC system (NATION TELEVISION) according to the color system. SYSTEM COMMITTEE), PAL (PHASE ALTERNATION BY LINE), SECAM (SEQUENTIEL COULEUR A MEMOIRE)

Therefore, countries around the world are doing TV broadcasting by combining their TV transmission and TV color system. For example, the United States, Japan, Korea, etc. adopt NTSC-M method, and Germany, Spain, Italy, Sweden, etc. PAL-B / G in Western Europe, PAL-D / K in China and Romania, PAL-I in the United Kingdom, Ireland and South Africa, SECAM-L in France and Luxembourg. In Eastern Europe, SECAM-D / K is adopted.

As described above, since the broadcasting methods employed in each country are different, it is not possible to be compatible with televisions and VCRs between countries with different broadcasting methods. In other words, televisions and VCRs produced in countries that adopt the NTSC system are designed to be able to process video / audio signals transmitted by the NTSC system, so they are transmitted using the PAL or SECAM method except the NTSC system. The playback process for the video / audio signal being played was not possible.

The multi-television developed in view of the above points is not limited to one broadcasting method, but the internal signal processing method is switched on the basis of the TV broadcasting method that is inputted. Video and audio signals can be reproduced and output.

However, in the multi-television, the screen player is adjusted to adapt to each broadcasting method for the playback of video signals, but in performing OSD (On Screen Display) operation, the output position of the OSD characters is PAL method and SECAM method. In the PAL method and SECAM method where the injection player is 625, because the fixed line area is fixed, the OSD characters outputted to the bottom part of the screen as shown in FIG. 2A are smaller than the PAL and SECAM method. In the small NTSC system, as shown in FIG.

Accordingly, the present invention has been made in view of the above circumstances, and according to the broadcasting method of the broadcast signal received from the multi-television which can receive NTSC broadcasting system, PAL broadcasting system and SECAM broadcasting system, It is an object of the present invention to provide an OSD output position control device in a multi-television which automatically converts and adjusts an OSD output position on a CRT.

According to the present invention for realizing the above object, there is provided an NTSC video signal processor for reproducing and processing NTSC video signals, and a PAL / SECAM video signal processor for reproducing and processing PAL / SECAM video signals. A multi-television television capable of reproducing and outputting SECAM broadcast signals; Scanning player detecting means for detecting a horizontal / vertical synchronization signal of the video signal of the TV broadcasting signal and detecting a scanning player of the TV broadcasting signal based on the horizontal / vertical synchronization signal; A data storage unit for storing data on an OSD output position in NTSC and PAL / SECAM; Based on the scanning player detected by the scanning player detecting means, the broadcasting method of the TV broadcasting signal is determined, and the OSD output position data is read from the data storage unit based on the determination result, and based on the OSD output position data. A control unit for adjusting the output position of the OSD text; The OSD output position of the multi-television further comprises an OSD processing unit for generating an OSD text signal based on the character data previously stored under the control of the controller and applying the OSD text signal to the NTSC video signal processing unit or to the PAL / SECAM video signal processing unit. A control device is provided.

According to the present invention having the above-described configuration, when the NTSC broadcast signal is received in the multi-television and when the PAL or SECAM broadcast signal is received, it is output on the CRT screen so as to be suitable for the broadcast method of each broadcast signal. Even though the line for the output position area of the OSD text is adjusted to switch the broadcast signal, the OSD text is output at the proper position on the CRT screen.

1 is a block diagram showing the main configuration of the OSD output position control apparatus in a multi-television according to an embodiment of the present invention,

Figure 2a is a view showing an example of OSD display in the PAL / SECAM broadcasting method of the conventional multi-television.

2B is a view showing an example of OSD display in the NTSC broadcasting system of the conventional multi-television.

Explanation of symbols on the main parts of the drawings

10: control signal input unit, 12: control unit,

14: tuner, 16: video IF module,

18: switching unit, 20: NTSC video signal processing unit,

22: PAL / SECAM video signal processor, 24: video amplifier,

26: CRT drive unit, 28: synchronous signal detection unit,

30: injection player detection unit, 32: vertical / horizontal deflection circuit,

34: data storage, 36: OSD processing.

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

1 is a block diagram showing the main block configuration of the OSD output position control apparatus in a multi-television according to an embodiment of the present invention, the reference numeral 10 in the figure to enter the setting state of the various functions equipped in the multi-television 12 is a control signal input unit for performing a control operation for the entire apparatus based on the control signal input from the control signal input unit 10, and at the same time based on the scan player detected by the scan player detection unit 30 to be described later. The controller controls the OSD processing unit 36, which will be described later, to recognize the broadcasting method of the received TV broadcasting signal and adjust the output position of the OSD character appropriately for the broadcasting method.

Further, reference numeral 14 is a tuner for tuning a specific channel among a plurality of channels received through the antenna based on the tuning voltage VT applied from the controller 12, and 16 is a channel tuned in the tuner 14. Is an image IF module that detects only an image signal after receiving IF broadcast signal from a TV broadcast signal, and 18 is an NTSC image signal processor to which an image signal from the image IF module 16 will be described later under the control of the controller 12. And a switching unit for setting a path to be applied to (20) or to the PAL / SECAM video signal processing unit (22).

Reference numeral 20 denotes an NTSC video signal processing unit for reproducing the video signal output from the video IF module 16 applied through the switching unit 18 to conform to the NTSC method and outputting an RGB signal according thereto. Is a PAL / SECAM video signal processing unit for reproducing the video signal output from the video IF module 16 applied through the switching unit 18 so as to conform to the PAL / SECAM method and outputting the RGB signal accordingly. 24 is an image amplifier for amplifying the video signal output from the NTSC video signal processor 20 and the PAL / SECAM video signal processor 22 to be reproduced and output through a CRT, and 26 is an image amplifier 24. It is a CRT driver for driving the CRT so that the RGB electron beam for the output image signal is radiated to the CRT side.

In FIG. 1, reference numeral 28 denotes a sync signal detector for detecting a horizontal sync signal and a vertical sync signal from a video signal output from the video IF module 16, and 30 denotes a horizontal signal detected by the sync signal detector 28. FIG. A scan player detecting unit for detecting a scan player based on a synchronous signal and a vertical synchronous signal. In the present invention, the scan player detecting unit 30 counts a horizontal synchronous signal applied from the synchronous signal detecting unit 28 and the synchronous signal detecting unit. It is reset by the vertical synchronizing signal from (28) to detect the shot player, and applies the detected shot player to the controller 12.

Further, reference numeral 34 denotes a data storage unit for storing data on the OSD output position in the NTSC method and the PAL / SECAM method, and 36 denotes a predetermined OSD character based on character data previously stored under the control of the controller 12. The OSD processor generates a signal and applies the signal to the NTSC video signal processor 20 or the PAL / SECAM video signal processor 22.

Next, with reference to the accompanying drawings will be described in detail the operation of the OSD output position control apparatus in a multi-television according to an embodiment of the present invention.

First, when a predetermined channel is tuned by the control signal input unit 10, the controller 12 applies a tuning voltage VT for the channel to the tuner 14, and the tuner 14 selects the corresponding tuning voltage. Based on the VT, a specific channel is tuned among the plurality of channels received through the antenna, and then the corresponding broadcast signal is applied to the image IF module 16 connected to the rear stage.

On the other hand, the video IF module 16 performs IF amplification of the corresponding broadcast signal, detects only the video signal from the IF amplified broadcast signal, applies it to the switching unit 18, and simultaneously applies it to the synchronization signal detection unit 28. The synchronization signal detection unit 28 detects a horizontal / vertical synchronization signal from the video signal and applies it to the scanning player detection unit 30, and the scanning player detection unit 30 is applied from the synchronization signal detection unit 28. The scanning athlete is counted based on the horizontal synchronizing signal and the vertical synchronizing signal, and the counting result is applied to the controller 12.

Accordingly, the controller 12 determines the method of the broadcast signal received through the antenna, that is, if the scan player applied from the scan player detection unit 30 is '525', the broadcast method is determined to be the NTSC method. If the scan player applied from the scan player detection unit 30 is '625', it is determined that the broadcasting method is the PAL method or the SECAM method, and a predetermined switching signal SW is sent to the switching unit 18 based on the determination result. When the broadcasting method is NTSC, the video signal output from the video IF module 16 is applied to the NTSC video signal processor 20. When the broadcasting method is PAL / SECAM, the video is output. The video signal output from the IF module 16 is applied to the PAL / SECAM video signal processor 22.

On the other hand, when the broadcast method is NTSC, the NTSC video signal processor 20 reproduces the video signal applied through the switching unit 18 in the NTSC method, and then converts the RGB signal into the video amplifier. At this time, if the OSD function execution is required, the control unit 12 reads the OSD output position data in the NTSC method stored in the data storage unit 34 and based on the OSD output position data. The processor 36 controls the timing at which the OSD text signal generated from the OSD processor 36 is applied to the NTSC image signal processor 20 so that the OSD text corresponding to the OSD text signal is in a specific region of the 525 scan lines. To be output to

At the same time, the control unit 12 sets the NTSC mode in the vertical / horizontal deflection circuit 32, whereby the vertical / horizontal deflection circuit 32 causes the scanning player on the CRT screen to be 525 lines. A vertical synchronizing signal is generated and applied to the CRT driving unit 26, and the CRT driving unit 26 scans 525 lines on the CRT screen by the pseudo horizontal / vertical synchronizing signal.

On the contrary, when the broadcasting method is the PAL method or the SECAM method, the PAL / SECAM video signal processing unit 22 processes the applied video signal through the switching unit 18 in the PAL / SECAM method and then, The RGB signal is applied to the image amplifier 24. When the OSD function is required, the controller 12 reads the OSD output position data of the PAL / SECAM method stored in the data storage 34. The OSD processing unit 36 is controlled based on the OSD output position data, and the OSD is controlled by controlling the timing when the OSD text signal generated from the OSD processing unit 36 is applied to the PAL / SECAM image signal processing unit 22. The OSD text for the text signal is output to a specific area of the 625 scan lines.

At the same time, the control unit 12 sets the PAL / SECAM mode in the vertical / horizontal deflection circuit 32, whereby the vertical / horizontal deflection circuit 32 causes the scan player on the CRT screen to be 625 lines. A pseudo horizontal / vertical synchronous signal is generated and applied to the CRT driver 26, and the CRT driver 26 scans 625 lines on the CRT screen by the pseudo horizontal / vertical synchronous signal.

Therefore, in the multi-vision, when the TV broadcasting signal of the channel selected by the tuner is NTSC, the output position of the OSD text is included so that the entire scan line, that is, the line where the OSD text is output among the 525 lines, corresponds to a specific area. In addition, when the broadcasting method of the TV broadcasting signal of the selected channel is PAL / SECAM method, the OSD character is automatically adjusted to the output position of the entire scanning line, that is, the line where the OSD text is output among the 626 lines, corresponding to a specific area. do.

As described above, according to the OSD output position control apparatus in a multi-television according to an embodiment of the present invention, when an NTSC broadcast signal is received in a multi-television and a PAL or SECAM broadcast signal is received, The line for the output position area of the OSD text output on the CRT screen is adjusted to suit the broadcast method of each broadcast signal so that the OSD text is output at the proper position of the CRT screen even if the broadcast method of the broadcast signal is switched.

Claims (4)

NTSC video signal processing section 20 for reproducing and processing NTSC video signals, and PAL / SECAM video signal processing section 22 for reproducing and processing PAL / SECAM video signals. In a multi-television capable of reproducing output; Scanning player detecting means (28, 30) for detecting a horizontal / vertical synchronization signal of the video signal of the TV broadcasting signal and detecting a scanning player of the TV broadcasting signal based on the horizontal / vertical synchronization signal; A data storage unit 34 for storing data on an OSD output position in NTSC mode and PAL / SECAM mode; On the basis of the scanning player detected by the scanning player detecting means 28 and 30, the broadcasting method of the TV broadcasting signal is determined, and the OSD output position data is read by the data storage unit 34 based on the determination result. A control unit 12 for adjusting the output position of the OSD text based on the OSD output position data; The OSD processor 36 generates an OSD text signal based on the character data previously stored under the control of the controller 12 and applies it to the NTSC video signal processor 20 or to the PAL / SECAM video signal processor 22. OSD output position control device in a multi-television, characterized in that further comprises. The method of claim 1, wherein the controller 12 controls the output timing of the OSD text signal output from the OSD 36 so that the OSD text corresponding to the OSD text signal is displayed in a predetermined scan line area. OSD output position control device in multi-television. The method according to claim 1, wherein the control unit 12 determines that the broadcast method is NTSC if the scan player outputted from the scan player detection unit 30 is 525 and the PAL / SECAM method if the scan player is 625. OSD output position control device in a multi-television characterized in that it is determined. The apparatus of claim 1, wherein the scan player detection unit (30) counts the detected horizontal sync signal to detect the scan player and is reset by the vertical sync signal.