KR100576162B1 - Apparatus and method for controlling playback optical disc using a lock code - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling playback of an optical disc using a lock code. For example, a lock code for preventing illegal copying of karaoke audio songs recorded on an optical disc such as a karaoke CD (CD) or a DVD (Lock) -Code) is recorded in the navigation information of the optical disc, and also recorded in an external connection module such as a key card, and when the reproducing operation is performed, the lock codes are respectively detected and compared to match each other. By decrypting and reproducing the data recorded in the data area of the data into the non-encrypted data using the lock code, a user who does not have a valid key card prevents illegal playback of karaoke audio songs recorded on the optical disc. To make piracy and playback of copyright-protected karaoke audio songs more efficient It is a very useful invention that can be prevented.

Lock code, navigation information, key card, external access module, piracy, karaoke data, copyright protection

Description

Apparatus and method for controlling playback optical disc using a lock code}             

1 illustrates a configuration of a general karaoke system,

2 shows a configuration of a karaoke disc on which a lock code is recorded according to the present invention;

3 shows a configuration of an optical disc playback control apparatus using a lock code according to the present invention;

4 is a flowchart illustrating an operation of an optical disc reproduction control method using a lock code according to the present invention;

5 and 6 illustrate an embodiment of a non-playback guidance message displayed on the screen according to the present invention.

?? Explanation of symbols for main parts of the drawings

10,30 Optical disc 11,31 Optical pickup

12,32: RF processor 13,33: digital signal processor

14,34: decoder 15,35: microcomputer

16,36: memory 37: connection

40: key card

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling playback of an optical disc using a lock code. For example, the present invention relates to a method of controlling karaoke data recorded on an optical disc using a lock code for copy protection. An apparatus and method for controlling optical disc reproduction using a lock code for effectively preventing illegal copying and reproducing operations.

In general, for reading and playing karaoke data recorded on an optical disc such as a karaoke CD (CD) or DVD (DVD), for example, video data of a background image, audio data of an accompaniment sound, and lyrics data of a subtitle image. Various types of karaoke systems are developed, released and commercialized.

On the other hand, as shown in Fig. 1, the karaoke system includes an optical disc 10, an optical pickup 11, an RF processor 12, a digital signal processor 13, a decoder 14, a microcomputer 15, and The memory 16 may be included. In the microcomputer 15, when the optical disc 10 is inserted and seated in a device, the navigation is recorded in a lead-in area of the optical disc 10. Navigation information is read out and stored in the memory 16.

In addition, when playing the karaoke audio song at the request of the user, the microcomputer 15 searches for the recording position of the audio song desired by the user by referring to the navigation information stored in the memory 16. The RF processor 12, the digital signal processor 13, and the decoder 14 are controlled to reproduce and output the corresponding audio song.

However, as described above, on the optical disc such as a karaoke CD (CD) or DVD (DVD) or the like, audio songs that are prohibited from illegal copying may be recorded for copyright protection. For example, the illegally copied audio songs may be recorded. They are copied without permission in the process of upgrading the optical disc at regular intervals, so that the copyright protection of the audio song is not properly managed.

Therefore, the present invention was created in order to solve the above problems, and records the lock code for illegal copy prevention in the navigation information of the optical disc, and also in the external connection module such as a key card. And a lock code for decrypting and reproducing the encrypted data recorded in the data area of the optical disc as unencrypted data using the lock code when the lock codes are detected and compared with each other when performing a reproduction operation. It is an object of the present invention to provide an apparatus and method for controlling optical disc reproduction.

In accordance with an aspect of the present invention, there is provided a method of controlling an optical disc reproduction using a lock code, the method including: detecting a lock code value recorded in navigation information of an optical disc inserted and seated in a device: the detected lock code value And detecting and comparing the lock code values stored in the external access module with each other. And when the lock code values coincide with each other, decrypting and encrypting the data recorded in the data area of the optical disc and reproducing the data.

Further, an optical disc reproduction control apparatus using a lock code according to the present invention includes: storage means for storing navigation information read from the optical disc; Connection means for connection connection with an external connection module; Control means for selectively determining whether to perform a reproducing operation by detecting and comparing the lock code value recorded in the navigation information with the lock code value stored in the external access module; And decoding means for decrypting the encrypted data recorded in the data area of the optical disc into non-encrypted data using the lock code value according to the operation control of the control means.

Best Mode for Carrying Out the Invention Preferred embodiments of an optical disc reproducing control apparatus and method using a lock code according to the present invention will now be described in detail with reference to the accompanying drawings.

First, the present invention can be applied to various recording media such as a karaoke CD (CD) or DVD (DVD). For example, as shown in FIG. 2, the karaoke disc 30 to which the present invention is applied can be read. A lead-in area (LIA), a data area (LIA), and a lead-out area (LOA) are separately allocated, and navigation information is recorded and managed in the lead-in area. .

Meanwhile, the navigation information records and manages various karaoke information (Karaoke-Info) for selecting and controlling karaoke audio songs, and includes a unique lock code for preventing illegal copying and reproduction. In the data area, encrypted karaoke data encrypted by the lock code are recorded.

That is, in the process of authoring the karaoke disc 30 to which the present invention is applied, as shown in FIG. 2, the karaoke data recorded in the data area is karaoke data encrypted using a unique lock code. The lock code is recorded in the navigation information recorded in the lead-in area. The lock code is recorded in an external connection module of a hardware type such as a key card. The key card is sold and provided with the optical disc.

In the karaoke system to which the present invention is applied, as shown in FIG. 3, the optical pickup 31, the RF processing unit 32, the digital signal processing unit 33, the decoder 34, the microcomputer 35, and the memory ( 36, and a connection unit 37, and the like, and an external connection module such as a key card 40 may be connected and used through the connection unit 37.

On the other hand, when the optical disc 30 is inserted and seated in the apparatus, the microcomputer 35 reads navigation information recorded in a lead-in area of the optical disc 30 and the like, and reads it into the memory 36. If a karaoke audio song is to be played back at the user's request, the lock-code value included in the navigation information stored in the memory 36 is searched and confirmed.

In addition, after searching and confirming the lock code value in the key card 40 connected and connected through the connection unit 37, the lock code value is compared with the lock code searched in the navigation information. If they match, the karaoke data encrypted in the data area of the optical disc is decrypted and reproduced using the lock codes.

On the other hand, as a result of the comparison, when the lock codes do not coincide with each other, the reproduction operation is not performed, thereby effectively preventing illegal copy and reproduction of the karaoke data recorded on the optical disc. Same as

4 is a flowchart illustrating a method of controlling an optical disk playback using a lock code according to the present invention. In the microcomputer 35, when the optical disk 10 is inserted and seated in the apparatus (S10), Navigation information recorded in the lead-in area is read out and stored in the memory 36 (S11). As described above with reference to FIG. 2, the navigation information includes karaoke information (Karaoke-Info.) And the like. A unique lock code (Lock-Code) is recorded and recorded (S11).

On the other hand, in the micom 35, in response to the user's key input, the playback of the karaoke audio song is requested (S12), a hardware form such as a key card connected through the connection portion 37 (Key Card) The lock code recorded in the external connection module 40 is searched and confirmed (S13).

The lock code is searched and checked among the navigation information stored in the memory 36 to be compared with the lock code retrieved from the key card (S14). When the comparison results, the lock codes match each other (S15). In operation S16, the microcomputer 35 determines that the optical disc 30 and the key card 40 are effectively manufactured, and performs a karaoke reproduction operation requested by the user (S16).

For example, using a lock code value retrieved from the navigation information, a series of data reproducing operations for decrypting and decoding the data recorded in the data area of the optical disc into the original karaoke data are performed.

On the other hand, when the lock codes do not coincide with each other as a result of the comparison, the microcomputer 35 determines that the optical disc 30 and the key card 40 are not effectively produced, and then the karaoke reproduction operation is performed. As shown in FIG. 5, a message indicating that the impossibility is output is displayed on an OSD screen of a television or the like (S17).

In addition, in the microcomputer 35, when a key card is not connected and connected to the connection portion 37, as shown in FIG. 6, a message for not reproducing and guiding the non-insertion of the key card is displayed. The output is displayed through the OS screen.

Then, the microcomputer 35 determines whether or not reproduction of the karaoke data is performed through the above-described process, but there is non-encrypted general DVD data without copyright protection or the like in the data area of the optical disc. In operation S18, the microcomputer 35 controls the RF processor 32, the digital signal processor 33, and the decoder 34 to selectively reproduce and reproduce the non-encrypted general DVD data (S19).

For reference, in the case of a dual layer disc having a first data recording layer and a second data recording layer, for example, encrypted karaoke data is recorded in the first data recording layer, and second data recording is performed. In the layer, non-encrypted general DVD data may be separately recorded.

Further, in the embodiment of the present invention, when the lock codes do not coincide with each other, only the second data recording layer on which the unencrypted general DVD data is recorded is allowed to be reproduced, and when the lock codes coincide with each other, The reproduction operation is also allowed for the first data recording layer in which the encrypted karaoke data is recorded.

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.

 An apparatus and method for controlling playback of an optical disc using a lock code according to the present invention, which is constructed and operated as described above, can prevent illegal copying of karaoke audio songs recorded on an optical disc such as, for example, a karaoke CD (CD) or DVD (DVD). A lock code for recording is included in the navigation information of the optical disc, and recorded in an external connection module such as a key card, and when the reproducing operation is performed, the lock codes are detected and compared with each other. If there is a match, the encrypted data recorded in the data area of the optical disc is decrypted and reproduced by unencrypted data using the lock code, so that a user who does not have a valid key card receives the karaoke audio tune recorded on the optical disc. Illegal reproduction of karaoke audio songs with copyright protection by preventing illegal playback And the reproduction is extremely useful inventors are able to more effectively prevented.

Claims (8)

Step 1: detecting the recorded lock code value included in the navigation information of the optical disc inserted and seated in the device: Detecting and comparing the detected lock code value with a lock code value stored in an external access module; And And if the lock code values coincide with each other, decrypting and reproducing the encrypted data recorded in the data area of the optical disc. The method of claim 1, And said step 3 is to decrypt data encrypted and recorded in the data area of said optical disc into unencrypted data using said lock code value. The method of claim 1, And outputting and displaying a message informing that the reproduction operation is impossible when the lock code values do not coincide with each other. The method of claim 1, And if the lock code values do not coincide with each other, selecting and reproducing only the non-encrypted data recorded in an unencrypted state in the data area of the optical disc. . Storage means for storing navigation information read from the optical disc; Connection means for connection connection with an external connection module; Control means for selectively determining whether to perform a reproducing operation by detecting and comparing the lock code value recorded in the navigation information with the lock code value stored in the external access module; And And a decoding means for decrypting the encrypted data recorded in the data area of the optical disc into unencrypted data using the lock code value according to the operation control of the control means. Optical disc playback control device. The method of claim 5, And if the lock code values do not coincide with each other, determining that the reproduction operation is impossible, and controlling the display to display a corresponding message. The method of claim 5, If the lock code values do not coincide with each other, the control means controls only the non-encrypted data recorded in an unencrypted state in the data area of the optical disc to be selectively reproduced. Control unit. The method of claim 5, The external connection module is hardware that stores unique lock code values, and is manufactured and sold together with the optical disc.

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