KR100690130B1 - Apparatus and method for recording and reproducing multi format video - Google Patents

Abstract

TECHNICAL FIELD The present invention relates to a multi-format video recording / reproducing apparatus and method, for example, in various types of video recording / reproducing apparatus such as a DVD-Recorder or a HDD-Recorder. A conversion means and a plurality of MPEG encoder means for recording video input by any one broadcast method simultaneously on a recording medium such as a DVD or a hard disk (HDD) such as NTSC and PAL. In addition, by allowing video data recorded in the plurality of formats to be read out and reproduced according to a recording format or a user's selection, video recording and reproducing operations can be normally performed regardless of an NTSC broadcasting area or a PAL broadcasting area. It is a very useful invention that can greatly improve the ease of use.

Multiple video formats, NTSC, PAL, DVD recorder, hard disk recorder

Description

Apparatus and method for recording and reproducing multi format video}             

1 illustrates a configuration of a general video recording / playback apparatus.

2 illustrates a configuration of a multi-format video recording / reproducing apparatus according to the present invention.

3 shows the structure of a typical single layer disk and dual layer disk,

4 illustrates navigation information of a multi-format video recorded and managed according to the present invention;

5 illustrates the structure of a single-layer disc and a dual-layer disc on which multi-format video is recorded according to the present invention.

6 is a flowchart illustrating an operation of a method of reproducing a multi-format video according to the present invention.

7 is a flowchart illustrating an operation of a multi-format video recording method according to the present invention.

※ Explanation of code for main part of drawing

20: A / D converter 21: first MPEG encoder

22: DVD formatter 23: disc

24: DVD deformatter 25: MPEG decoder

26: mux 27: Oesdi Boo

28: D / A converter 29: Video format converter

30: second MPEG encoder 31: input mode detection unit

32: recording mode detector 33: output mode detector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-format video recording / reproducing apparatus and method, for example, to a multi-format video recording / reproducing for simultaneously recording and reproducing video (Video) on one recording medium in NTSC and PAL formats. A reproducing apparatus and method are provided.

In recent years, the digitization of a system for recording / reproducing video images is rapidly progressing. In general, analogue-based VCRs are deteriorated, and DVDs, hard disks (HDDs), and BDs are used. Digital video apparatuses for digitally recording and reproducing digital video images compressed to a standard such as (D-VHS) have been widely used and commercialized.

On the other hand, currently used analog broadcasting, broadcasting systems such as NTSC, PAL, SECAM, etc. are mainly used, and video compression schemes conforming to the MPEG standard are used for digital broadcasting. For example, North America, Japan, etc. are determined for each region or country, and the format of a television or a storage medium for displaying the broadcast according to the corresponding method is also determined for each region or country.

That is, a general video recording / reproducing apparatus records and plays a video image by a designated method for each region or country. In addition to terrestrial broadcasting, satellite broadcasting is widely used and portable video recording apparatus such as a camcorder (Camcoder) Due to the widespread use of mobile phones and the development of transportation, the limitation of regional or national video image formats is losing its meaning.

For example, a video recording / reproducing apparatus supporting one video image format has a limitation that it can be used only in a limited area. In a typical video recording / reproducing apparatus, as shown in FIG. 1, A / D Converter 10, MPEG encoder 11, DVD formatter 12, optical disc 13, DVD deformatter 14, MPEG decoder 15, mux 16, OSD unit 17, and D The / A conversion unit 18 may be included.

On the other hand, the video signal input to the video recording / reproducing apparatus, a fixed input of any one of the NTSC or PAL method is input, the video signal input during recording, through the A / D converter 10 After being converted into digital video data, it is transmitted to the MUX 16 and the OS unit 17 for display and simultaneously input to the MPEG encoder 11 for storage.

The video data transmitted to the MUX 16 and the OSD unit 17 for the display is analogized through the D / A converter 18 with an optional OSD image added thereto. The video is output as a video signal, and the format of the input video and the output video has the same format, and the video data input to the MPEG encoder 11 for the storage is MPEG data by the MPEg encoder 11. Is compressed and input to the DVD formatter 12.

In addition, the DVD formatter 12 records the compressed video data in the data area of the optical disc in accordance with the DVD format, and data reproduced on the optical disc during reproduction is MPEG video data in the DVD deformatter 14. After reconstructed into the MPEG decoder 15, the MPEG decoder 15 decodes the MPEG-compressed video data, converts it into reconstructed video data, and delivers it to the MUX and OS. The OSD unit 17 adds an OSD image necessary for video data and outputs it to the D / A converter 18. The D / A converter 18 converts the digital video data into an analog video signal. The output will be converted.

However, in the general video recording / reproducing apparatus, since the MPEG encoder and the DVD formatter, the DVD deformatter and the MPEG decoder are fixed in either NTSC or PAL scheme as described above, video produced for the NTSC broadcasting region If a recording / playback device is used in a PAL broadcast area, or a video recorder / playback device made for a PAL broadcast area is used in an NTSC broadcast area, a normal video recording and playback operation may fail. Done.

Accordingly, the present invention was created to solve the above problems, for example, NTSC broadcast area or PAL broadcast by recording and playing back video (Video) at the same time, for example, NTSC and PAL on one recording medium. It is an object of the present invention to provide a multi-format video recording / reproducing apparatus and method for ensuring normal video recording and playback operations regardless of the region.

A multi-format video recording / reproducing apparatus according to the present invention for achieving the above object comprises: first encoder means for encoding input video data of a predetermined format; Video format converting means for converting the input video data into a format different from the predetermined format; Second encoder means for encoding the video data converted into the other format; And recording means for simultaneously recording the video data encoded by the first encoder means and the second encoder means on one recording medium.

In addition, the multi-format video recording / reproducing method according to the present invention encodes input video data of a predetermined format, converts the input video data into a format different from the predetermined format, and then converts the input video data into another format. Encoding encoded video data; And two steps of simultaneously recording the video data encoded in the different formats on one recording medium.

Hereinafter, exemplary embodiments of a multi-format video recording / reproducing apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

2 illustrates a configuration of a multi-format video recording / reproducing apparatus according to the present invention, wherein the A / D converter 20, the first MPEG encoder 21, the DVD formatter 22, and the disc 23 are shown. DVD deformatter 24, MPEG decoder 25, mux 26, OSD unit 27, D / A converter 28, video format converter 29, second MPEG encoder 30 And an input mode detector 31, a recording mode detector 32, an output mode detector 33, and the like.

That is, in the multi-format video recording / reproducing apparatus according to the present invention, the video format converting unit 29 and the second MPEG encoder 30 are further configured as compared with a general video recording / reproducing apparatus. In addition, the A / D converter 20 converts, for example, an NTSC or PAL analog video signal into a digital video signal.

The digital video signal is inputted to the MUX 26 and the OS-D 27 and simultaneously to the video format converter 29 and the first MPEG encoder 21, and the video format. The output of the converter 29 is input to the second MPEG encoder 30.

On the other hand, the video data inputted to the OSD unit 27 is outputted by adding an OSD image, and the D / A converter 28 converts the video data to which the OSD image is added as an analog video signal. The video data inputted to the video format converter 29 is converted to another video format different from the input video format. For example, if the input video format is NTSC, the video data is converted to the PAL video format. If the input video format is PAL, it is converted to NTSC video format.

If the input video signal is a 50 Hz ITU-R BT.656 signal, the converted video signal is converted into an ITU-R BT.656 signal at 60 Hz, and thus, a video format input through the A / D conversion unit 20. Since the video format output through the video format converter 29 is different from each other, the NTSC format video and the PAL format video are input to the first MPEG encoder and the second MPEG encoder.

For example, the first MPEG encoder 21 compresses an NTSC format video input through the A / D converter 20 into MPEG, and the second MPEG encoder 30 compresses the video format. The PAL format video input through the conversion unit 29 is compressed to MPEG, and the DVD formatter 22 simultaneously records the NTSC format video and the PAL format video on the disc 23. In this case, a plurality of titles are simultaneously recorded on the disc.

FIG. 3 shows the structure of a typical single layer disk and a dual layer disk. The disk includes a lead-in area and a data area from the center of the disk. A lead-out area is allocated, and compressed audio and video data is recorded in the data area. The audio and video data, as shown in FIG. 4, has a video object (VOB). It is recorded and managed as a single VOB has a structure corresponding to a plurality of cells (Cell).

In the present invention, the NTSC Title A (Title A) and PAL Title B (Title B) are included in one VOB, and among the cell information, odd-numbered cell information (Cell 1, 3, ..n-1) corresponds to Title A of NTSC scheme, and even-numbered cell information Cells 2, 4 and .n correspond to Title B of PAL scheme. Has a structure.

On the other hand, as shown in Fig. 5, when the disc is a single layer disc, the NTSC title A (Title A) and PAL title B (Title B) are recorded in the same recording layer, but the dual layer disc In this case, the NTSC Title A (Title A) may be separately recorded on the first recording layer, and the PAL Title B (Title B) may be separately recorded on the second recording layer.

6 is a flowchart illustrating a method of reproducing a multi-format video according to the present invention. In the video recording / reproducing apparatus, when a reproducing operation is performed (S10), a plurality of video data recorded on the disc 23 are reproduced. First, it is determined whether it is recorded in the format (NTSC & PAL). For example, if it is recorded in a plurality of formats (S11), after confirming the currently set output format (S12), it matches the output format. The title will be selectively played.

That is, if the current output mode detected by the output mode detector 33 is NTSC, the corresponding NTSC Title A (Title A) is reproduced and outputted (S13) and detected by the output mode detector 33. If the current output mode is PAL, the corresponding PAL title B (Title B) is reproduced and output.

On the other hand, if only one format of video is recorded on the disc, the format of the currently recorded title is checked (S15). For example, if the video format of the title is NTSC, the title is checked. If the video format of the title is PAL, the title is reproduced and output in the PAL format.

7 is a flowchart illustrating an operation of a multi-format video recording method according to the present invention. In the video recording / reproducing apparatus, when a recording operation is performed, a recording format selected by a user is determined (S30). When the format recording mode is set (S31), as described above, the video data to be recorded is simultaneously recorded in the PAL title and the NTSC title (S32).

On the other hand, when the disc is an empty disc (S33), when the multi-format recording mode is not set (S33), the input video format is checked, and when the NTSC format is checked (S34), the input video is checked. If it is recorded in NTSC title (S35), and if the result of the check is PAL format, the input video is recorded as PAL title (S36).

When the disc is not an empty disc when the multi-format recording mode is not set, the disc records the contents recorded on the disc, and when there is only NTSC format data, the disc is recorded in the NTSC method ( S38), when all data of a plurality of formats are present, the title is simultaneously recorded in the title of the NTSC system and the PAL system (S38), and in the case of the PAL format, only the data of the PAL format is recorded (S39).

The above-described preferred embodiments of the present invention have been disclosed for purposes of illustration, and the present invention is applicable to various types of video apparatuses as well as DVD recorders or hard disk recorders, and those skilled in the art Within the spirit and scope of the present invention disclosed in the appended claims, other various embodiments may be improved, changed, replaced or added.

The multi-format video recording / playback apparatus and method according to the present invention constructed and constructed as described above may be, for example, various types of video recording / playback apparatuses such as a DVD-Recorder or a HDD-Recorder. A video format converting means and a plurality of MPEG encoder means are provided in the NTSC system and PAL system in one recording medium such as a DVD or a hard disk. By simultaneously recording and reading and reproducing the video data recorded in the plurality of formats according to the recording format or the user's selection, the video recording and playback operations are normally performed regardless of the NTSC broadcasting region or the PAL broadcasting region. It is very useful invention to be able to do it, and to greatly improve the ease of use All.

Claims (15)

First encoder means for encoding input video data of a predetermined format; Video format converting means for converting the input video data into a format different from the predetermined format; Second encoder means for encoding the video data converted into the other format; And And recording means for simultaneously recording the video data encoded by the first encoder means and the second encoder means on one recording medium. The method of claim 1, And the video format converting means converts the input video data into a PAL format when the input video data is NTSC format, and converts it into an NTSC format when the input video data is PAL format. . The method of claim 1, The first encoder means encodes and compresses video data in NTSC (or PAL) format into MPEG data, and the second encoder means encodes and compresses video data in PAL (or NTSC) format into MPEG data. A multi-format video recording / playback device. The method of claim 1, The recording means records the data encoded by the first encoder means as a first title, and records the data encoded by the second encoder means as a second title. Playback device. The method of claim 4, wherein When the recording medium is a single layer disc, the first title and the second title are recorded on the same recording layer, and when the recording medium is a dual layer disc, the first title and the second title are different recordings. A multi-format video recording / reproducing apparatus, which is recorded separately in layers. The method of claim 4, wherein The first title and the second title are recorded and managed as one video object (VOB), and among the plurality of cell information corresponding to the video object, odd-numbered cell information corresponds to the first title and is even-numbered. And the cell information corresponds to the second title. The method of claim 1, A / D conversion means for converting an analog video signal input from the outside into a digital video signal; Detection means for detecting the external input mode; And And a detection means for detecting a current recording mode being performed by said recording means. The method of claim 1, Reading means for reading video data recorded on the recording medium; Decoder means for decoding and reconstructing the read video data; Output means for outputting the restored video data to an external device; And And a detection means for detecting an output mode to the external device. The method of claim 8, The reading means selects and reads at least one of an NTSC title or a PAL title recorded on the recording medium according to a format of data recorded on the recording medium or an output mode to the external device. A multi-format video recording / playback device. Encoding the input video data of a predetermined format, converting the input video data into a format different from the predetermined format, and then encoding the converted video data into the other format; And And recording the video data encoded in each of the different formats on one recording medium at the same time. The method of claim 10, In the first step, when the input video data is NTSC format, it converts to PAL format, and when the input video data is PAL format, it converts to NTSC format and converts video data of NTSC format and PAL format to MPEG. A multi-format video recording / playback method, characterized in that the data is encoded simultaneously. The method of claim 10, In the second step, the video data encoded and encoded in the different formats are separately recorded into a first title and a second title. The method of claim 12, When the recording medium is a single layer disc, the first title and the second title are recorded on the same recording layer, and when the recording medium is a dual layer disc, the first title and the second title are different from each other. A multi-format video recording / playback method characterized by being recorded separately in a recording layer. The method of claim 13, The first title and the second title are recorded and managed as one video object (VOB), and among the plurality of cell information corresponding to the video object, odd-numbered cell information corresponds to the first title and is even-numbered. The cell information corresponds to the second title. The method of claim 10, And selecting and reading at least one of an NTSC title or a PAL title recorded on the recording medium according to a format of data recorded on the recording medium or an output mode to an external device. Multi-format video recording / playback method.

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