KR20040075242A - Method for recording and reproducing data in digital complex recorder - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data copy recording and reproducing method in a digital composite recorder. The present invention relates to a digital composite recorder including a plurality of different devices such as a DVD player and a HDD recorder. In the case where the A / V data of the DVD inserted in the DVD player is efficiently copied and recorded on the hard disk provided in the hard disk recorder, the DVD A / V data copied and recorded on the hard disk is read out and reproduced. By reproducing and reproducing the original A / V data through the interface with the DVD player, the user having the digital composite recorder copies the A / V data of various titles recorded on the DVD to the hard disk. Record and save, and you can also watch and play high-definition video data Something that will be very useful inventions.

Description

Method for recording and reproducing data in digital complex recorder {Method for recording and reproducing data in digital complex recorder}

According to the present invention, in a digital composite recorder in which a plurality of different devices such as a DVD player (DVD-P) and a hard disk recorder (HDD-R) are integrally included, the A / V data encrypted on the DVD is stored on the hard disk. The present invention relates to a method of copying and reproducing data in a digital composite recorder for enabling copying and reproducing.

FIG. 1 shows a configuration of a general digital composite recorder. For example, in a digital composite recorder in which a DVD player and a hard disk recorder are integrated, a hard disk 10 and an HDR (HDD Record) system 11 are illustrated. The optical pickup 21, the VDP (Video Disc Play) system 22, the microcomputer 30, and the memory 31 may be included.

Meanwhile, the microcomputer 30 operates and controls the HDR system 11 according to a user's request to read and reproduce various types of data recorded on the hard disk 10, or A such as a broadcast program. A series of operations for recording and storing / V data on the hard disk 10 is performed.

Further, in the microcomputer 30, the optical disk 20 such as a DVD (DVD) is inserted and seated in the device, and according to a user's request, the microcomputer 30 operates and controls the VDP system 22, and the DVD 20 A series of operations for reading out and reproducing the A / V data recorded in the above is performed.

Accordingly, the user equipped with the digital composite recorder can read out, reproduce, or store A / V data of a broadcast program recorded on the hard disk, or selectively store A / V data recorded on the DVD. Can be read and played back.

Meanwhile, as shown in FIG. 2, the A / V data stream recorded and stored in the DVD 20 may be recorded and stored as scrambled encrypted data by a CSS (Conditional Scrambling System) method. In addition, A / V data to be reproduced with temporal continuity, for example, A / V data of a video object unit (VOB) corresponding to one title, is a cell, which is navigation information corresponding to the recording body. The reproduction is controlled by the information.

In addition, an encryption key value for de-scramble processing the A / V data in each recording aggregate, for example, a title key value, has a unique value in each cell information unit. In addition, the title key values are recorded and managed in an encrypted state by a specific disc key value.

Accordingly, when copying and recording the A / V data encrypted on the DVD to the hard disk, as described above, the title key value for the descrambling process must be recorded and managed together. Since the value has a unique value different according to each cell information unit, all title key values recorded on the DVD must be recorded and managed for each cell information, which is a problem required for a complicated algorithm.

In addition, the A / V data encrypted on the DVD is restored to the original A / V data and output as an analog A / V signal, and then the analog A / V signal is received again to be suitable for the hard disk. In the case of recording in the format, there is a problem that the image quality of the reproduced video is greatly reduced.

Accordingly, the present invention has been made to solve the above problems, and in the digital composite recorder in which a plurality of different devices such as a DVD player and a HDD recorder are integrally included, When recording A / V data encrypted on DVD to hard disk, the present invention provides a method of copying and playing back data on a digital composite recorder for simpler copying and playback without degradation of image quality. There is a purpose.

1 shows a configuration of a general digital composite recorder,

FIG. 2 illustrates A / V data recorded on a general DVD and navigation information for reproduction control.

3 illustrates a configuration of a digital composite recorder to which the data copy recording and reproducing method according to the present invention is applied.

4 illustrates a data copy recording process in a digital composite recorder according to the present invention;

5 is a diagram illustrating a data reproduction process in a digital composite recorder according to the present invention.

※ Explanation of code for main part of drawing

10: hard disk 11: HDR system

20: optical disc 21: optical pickup

22: VDP system 30: micom

31: memory 40: HDD / DVD adaptation block

In accordance with another aspect of the present invention, there is provided a data copy recording and reproducing method of a digital composite recorder, the method comprising: descrambling A / V data encrypted on a DVD and copying and recording the data onto a hard disk; And copying and recording navigation information corresponding to the copy-recorded A / V data in the file system of the DVD in the file system of the hard disk in the same file structure.

Hereinafter, a preferred embodiment of a data copy recording and reproducing method in a digital composite recorder according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 shows a configuration of a digital composite recorder to which the data copy recording and reproducing method according to the present invention is applied. For example, FIG. 1 illustrates a digital composite recorder in which a DVD player and a hard disk recorder are integrated. As described above, the hard disk 10, the HDR system 11, the optical pickup 21, the VDP system 22, the microcomputer 30, the memory 31, and the like are included. An adaptation block 40 is further included.

The HDD / DVD adaptation block 40 may be further included in a device as a separate hardware configuration or may include a software configuration in the HDR system or the VDP system, and may provide an interface between the HDR system and the VDP system. Through this, a series of mediation operations for efficiently copying, recording, and reproducing the A / V data of the DVD to the hard disk are performed.

On the other hand, when the microcomputer 30 copies and records the A / V data encrypted on the DVD 20 to the hard disk 10 in response to a user's request, the HDD / DVD adaptation block 40 In addition, as shown in Fig. 4, a specific recording set (xxxxx.VOB) in the video title set (Video TS) to be copied and recorded is selected in the DVD file system.

Then, the VDP system 22 is operated to descramble the A / V data of the selected and searched recording aggregate. In the HDD / DVD adaptation block 40, the de-scramble process is performed. While performing a series of operations for recording scrambled A / V data to the hard disk through an interface with the HDR system 11, the A / V data descrambled and recorded on the hard disk is performed. Among the file systems of the hard disk, recording management is performed in a specific record set (xxxxx.VOB) in the DVD backup (DVD_BACKUP) directory.

Further, in the HDD / DVD adaptation block 40, the navigation information (xxxxx.IFO, xxxxx.BUP) associated with the specific recording assembly (xxxxx.VOB) is copied as it is, and then among the file systems of the hard disk. In this case, recording management is performed in association with a specific record set (xxxxx.VOB) in the DVD_BACKUP directory.

As a result, A / V data of the descrambled DVD is recorded in the data recording area of the hard disk 10, and in the file system of the hard disk 10, the specific corresponding to the A / V data is recorded. A record set (xxxx.VOB) and navigation information (xxxxx.IFO, xxxxx.BUP) are recorded and managed.

On the other hand, when the microcomputer 30 reads and reproduces the A / V data of the DVD copied and recorded on the hard disk according to a user's request, the microcomputer 30 operates and controls the HDR system 11 to perform descrambled processing. After the A / V data is copied and read, the HDD / DVD adaptation block 40 reads the A / V data from the original A / V data through an interface between the HDR system and the VDP system. The disc key value and the title key value required for the playback output are sequentially restored.

For example, as shown in Figure 5, by using a master key (Master Key) input by the user, to restore the disk key value (S10), and then using the restored disk key value, The encrypted title key value is decrypted (S20).

Then, by using the decoded title key value, a series of reproducing operations descrambling the A / V data read out from the hard disk (S30) to restore and output the high quality video data and the high quality audio data. Will be performed.

Therefore, the user can more easily copy and record the A / V data encrypted on the DVD to the hard disk, and can also play back and watch high quality video without deteriorating the picture quality.

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 data copy recording and reproducing method of the digital composite recorder according to the present invention constituted and configured as described above comprises a plurality of different devices such as a DVD player, a hard disk recorder, and the like. When the A / V data of the inserted DVD is efficiently copied and recorded on the hard disk provided in the hard disk recorder, and the DVD A / V data copied and recorded on the hard disk is read out and reproduced, the DVD player is connected to the DVD player. By reproducing and reproducing the original A / V data through the interface, a user having the digital composite recorder can copy and store A / V data of various titles recorded on the DVD onto the hard disk. Also watch high-definition video data playback It is a very useful invention.

Claims (4)

A first step of descrambling the A / V data encrypted on the DVD and copying and recording the data onto the hard disk; And And a second step of copying and recording navigation information corresponding to the copied / recorded A / V data in the file system of the DVD in the same file structure in the file system of the hard disk. How to record and play back data on The method of claim 1, And the navigation information is a recording assembly corresponding to the copied / recorded A / V data, and management information for reproducing and controlling the A / V data. The method of claim 1, When reproducing A / V data copied and recorded on the hard disk, the disk key value and the title key value for decryption are sequentially restored with reference to the navigation information, and then, by using the title key value. And copying and reproducing the A / V data as original video and audio. The method of claim 3, wherein And the disc key value is restored by a master key value input by a user.