KR20040062321A - Method for controling select signal processing - Google Patents

Abstract

PURPOSE: A method for controlling selection for a signal processing method is provided to promptly output a video image and an audio sound through an external connecting equipment. CONSTITUTION: A microcomputer judges whether an optical disk is inserted(S10). The microcomputer searches a lead-in area of the optical disk and reads navigation information recorded in the lead-in area for downloading the navigation information(S11). A user requests a playback operation(S12). The microcomputer confirms a signal processing method by searching the stored navigation information(S13). The microcomputer judges whether the confirmed signal processing method coincides with a signal processing method acceptable by a digital TV(S14). If different, the microcomputer controls an NTSC/PAL(National Television System Committee-to-Phase Alternation by Line system) converter to change a method for audio and video data(S16). The microcomputer reads and reproduces data stream recorded on the optical disk(S17). If another operation is requested, the microcomputer executes the requested operation(S18).

Description

Signal processing method selection control method {Method for controling select signal processing}

The present invention relates to a signal processing method selection control method, and more particularly, to a signal processing method of video and audio transmitted and output from an electronic device such as an optical disk device or a digital broadcast receiver to an external connection device such as a digital television, The present invention relates to a signal processing method selection control method for selectively controlling the NTSC method or the PAL method corresponding to the external connection device.

Recently, optical discs capable of reading out and reproducing high quality video data and high quality audio data for a long time, such as DVDs, have been developed and commercialized, and optical disc devices for reading and reproducing the data recorded on the DVDs, For example, a DVD-Player has been developed and released and commercialized.

On the other hand, the DVD player reads the data stream recorded and stored on the DVD, decodes and restores the original video and audio data, and outputs the data stream to an external connection device such as a digital television (D-TV).

Therefore, the user having the DVD player can watch the high definition video and the high quality audio recorded in the DVD through an external connection device such as a digital television.

In addition, a set-top box (STB) which recently receives a broadcast data stream transmitted through digital broadcasting, decodes and restores original video and audio data, and outputs it to an external connection device such as a digital television (D-TV). Digital broadcast receivers such as these have been developed and commercialized.

Accordingly, a user having the digital broadcast receiver can watch a broadcast data stream received through digital broadcast through an external connection device such as a digital television, wherein the digital broadcast receiver or the optical disk device includes An NTSC / PAL converter may be included for converting and outputting video and audio signals corresponding to a signal processing method, for example, an NTSC method or a PAL method, in an external connection device such as a television (D-TV).

On the other hand, in the NTSC / PAL converter, as described above, the optical disk device or the digital broadcast receiver searches for decoded and reconstructed video and audio data, and whether the signal processing method of the video and audio data is NTSC or PAL. After confirming that the system is a system, the video and audio data are converted and output by a signal processing method that can be accommodated by an external connection device such as a digital television.

However, in the NTSC / PAL converter included in a general optical disk device or a digital broadcast receiver or the like, as described above, the video and audio data decoded and reconstructed in the device are directly searched for, and the signal processing method of the video and audio data is determined. In order to confirm, there was a problem that the signal processing method detection and confirmation operation takes a long time of about 7 seconds or more.

Accordingly, the present invention has been made to solve the above problems, and the signal processing method of the data stream read and reproduced from a recording medium such as an optical disc or the data stream received through digital broadcasting is NTSC or PAL. It is an object of the present invention to provide a method for adjusting audio recording levels for selectively operating and controlling an NTSC / PAL converter included in a device after quickly searching and confirming whether or not it is a scheme.

1 illustrates a configuration of an optical disk apparatus to which a signal processing method selection control method according to the present invention is applied.

2 is a block diagram of an optical disk apparatus to which the signal processing method selection control method according to the present invention is applied;

3 is a flowchart illustrating a signal processing method selection control method according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: VDP system 13: micom

14 NTSC / PAL Converter 15 Memory

According to an aspect of the present invention, there is provided a signal processing method selection control method comprising: determining, by navigation information, a signal processing method of video and audio data to be transmitted and output to an external connection device; And determining whether to convert the signal processing method of the video and audio data according to whether the signal processing method determined by the navigation information matches the signal processing method that can be accommodated by the external connection device. It is characterized by comprising.

Hereinafter, a preferred embodiment of a signal processing method selection control method according to the present invention will be described in detail with reference to the accompanying drawings.

First, the signal processing method selection control method according to the present invention is applicable to various electronic devices such as an optical disk device or a digital broadcast receiver including an NTSC / PAL converter, and as shown in FIG. 1, a signal according to the present invention. The optical disc apparatus to which the processing method selection control method is applied includes an optical pickup 11, a VDP (Video Disc Play) system 12, a microcomputer 13, an NTSC / PAL converter 14, a memory 15, and the like. Can be configured,

Meanwhile, as shown in FIG. 2, the VDP system 12 includes a demux 120 for separately outputting a data stream read from an optical disc into video, audio, and navigation information, and the separated video. And a video decoder 121 for decoding data into original video data, and an audio decoder 122 for decoding the separated output audio data into original audio data.

In addition, the microcomputer 13 stores the navigation information separately output through the demux 120 in the memory 15 and refers to 'NTSC / PAL type' information included in the navigation information. Further, it is possible to quickly search and confirm whether the signal processing method of the video and audio read out and reproduced from the optical disc is NTSC or PAL.

In addition, the signal processing method that can be accommodated by an external connection device such as a digital television connected to the optical disc device is determined by a user's key input or through an interface with the external connection device, and then the NTSC. The / PAL converter 14 is controlled for operation.

For example, when the signal processing method of the video and audio data searched and confirmed by the navigation information is the NTSC method, and the signal processing method acceptable in the digital television is the PAL method, the NTSC / PAL converter 14 is operated. By controlling, the NTSC video and audio outputted through the video decoder and the audio decoder are converted into PAL video and audio, which will be described in detail below.

3 is a flowchart illustrating an audio signal processing method selection control method according to the present invention. In the microcomputer 13, when the optical disc 10 is inserted and seated in the device (S10), normal servo control is performed. After the operation is performed, the lead-in area of the optical disc is searched, and the navigation information recorded in the lead-in area is read, and a series of navigation information download operations are stored in the memory 15. It is made (S11).

In addition, when the microcomputer 13 requests a playback operation from the user (S12), the microcomputer 13 searches for navigation information stored in the memory 15 to perform a data playback operation desired by the user. With reference to the 'NTSC / PAL type' information included in the navigation information, it is quickly searched and confirmed whether the signal processing method of the video and audio to be read and reproduced from the optical disc is NTSC or PAL (S13).

On the other hand, it is determined whether the signal processing method identified by the navigation information as described above matches the signal processing method acceptable in the digital television connected to the optical disk device. For example, the signal confirmed by the navigation information is determined. If the processing method is the NTSC method and the signal processing method acceptable in the digital television is the NTSC method, the microcomputer 12 stops the operation of the NTSC / PAL converter 14 to omit the data conversion operation (S15). ).

On the other hand, when the signal processing method identified by the navigation information is the NTSC method and the signal processing method acceptable in the digital television is the PAL method, the microcomputer 12 operates and controls the NTSC / PAL converter 14, NTSC video and audio data are converted into PAL ice video and audio data (S16).

Further, since a series of reproducing operations for reading out and reproducing the data stream recorded on the optical disc is performed (S17), the user can watch a normal video screen and an audio sound through the digital television.

On the other hand, in the microcomputer 12, when a user requests another operation other than the playback operation, a series of operations corresponding thereto are performed (S18). As described above, the present invention provides an optical disk apparatus, It may be applied to a digital broadcast receiver, etc. In this case, the signal processing method of the broadcast data stream is NTSC based on navigation information provided through digital broadcasting, for example, navigation information transmitted in an EPG (Electric Program Guide) information. Or, you can quickly find out whether the PAL method.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The signal processing method selection control method according to the present invention constituted and constructed as described above is a signal processing method of a data stream read and reproduced from a recording medium such as an optical disc, or a data stream received through digital broadcasting, or is an NTSC method. After searching and confirming whether the PAL system is searched with reference to the navigation information, and selectively operating and controlling the NTSC / PAL converter included in the device, a signal processing method that can be accommodated by an external connection device such as a digital television (D-TV) It is a very useful invention that the transmission of the video and audio signals of the video, the audio and video, the normal video image and audio is output more quickly through the external connection device.

Claims (4)

Determining a signal processing method of video and audio data to be transmitted and output to an external connection device by referring navigation information; And And determining whether to convert the signal processing method of the video and audio data according to whether the signal processing method determined by the navigation information matches the signal processing method that can be accommodated by the external connection device. Signal processing method selection control method, characterized in that made. The method of claim 1, When converting the signal processing method of the video and audio data, further comprising the step of controlling the operation of the NTSC / PAL converter included in the device, the conversion to a signal processing method that can be accommodated in the external connection device Signal processing method selection control method characterized in that. The method of claim 1, And when the signal processing scheme of the video and audio data is not converted, disabling the NTSC / PAL converter included in the apparatus. The method of claim 1, And the navigation information is read from an optical disc or received through digital broadcasting.