Method of recording and reproducing sample data to/from a recording medium and sample data containing recording medium

• US 7,634,447 B2
• Filed: 08/29/2006
• Issued: 12/15/2009
• Est. Priority Date: 03/13/2001
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byung Jin, Kim, Hyung Sun
• Primary Examiner(s): Tran; Thang V
• Application Number:
  US11/511,402
• Publication Number:
  US 20060294014A1
• Time in Patent Office: 1,204 Days
• Field of Search: 705/51, 705/55, 705 57- 59
• US Class Current: 705/51
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 2221/2119 Authenticating web pages, e.g. with suspicious links
• CPC Class Codes: G06Q 30/06 Buying, selling or leasing transactions
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/0071 involving a purchase action
• CPC Class Codes: G11B 20/00978 wherein the record carrier stores a trial version of a content
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

Abstract

The present invention provides according to an embodiment a method of reproducing digital content, comprising: (a) determining whether a sample data is present based on an indication information indicating a presence of the sample data; (b) reading a position information representing a location of a sample data if the sample data is present as a result of the step (a), the sample data being same as a portion of digital content and not protected; and (c) reproducing the sample data based on the read position information without Digital Right Management (DRM) information, the DRM information authorizing a reproduction of the digital content.

Claims

1. A method of reproducing digital content in a reproducing device, comprising:

(a) reading a digital content from a memory of the reproducing device, the digital content protected by Digital Right Management (DRM) information authorizing a reproduction of the digital content, wherein the digital content is associated with management information including additional information of the digital content;

(b) receiving the DRM information from an external source indicated by a Uniform Resource Locator (URL) information, wherein the DRM information is associated with identification information of the read digital content, and wherein the identification information and the URL information are included in the management information;

(c) reproducing the digital content based on the DRM information, when the DRM information exists in the reproducing device or received from the external source;

(d) reading a sample section by using uniquely identifying information indicating a portion of the sample section in the digital content, wherein the sample section is non-encrypted and used for providing a preview, and wherein the uniquely identifying information is included in the management information; and

(e) reproducing the read sample section without using the DRM information.

2. The method of claim 1, wherein the digital content comprises a plurality of digital audios or videos.

3. The method of claim 1, wherein the step of receiving the DRM information compnses:

(b1) reading the identification information and the URL information from the management information; and

(b2) transmitting the identification information to the external source by using the URL information.

4. An apparatus for reproducing digital content, comprising:

a memory;

a retrieving unit configured to read a digital content from the memory, the digital content protected by Digital Right Management (DRM) information authorizing a reproduction of the digital content, wherein the digital content is associated with management information including additional information of the digital content;

a receiving unit configured to receive the DRM information from an external source indicated by a Uniform Resource Locator (URL) information, wherein the DRM information is associated with identification information of the read digital content, and wherein the identification information and the URL information are included in the management information;

a processing unit configured to read a sample section by using uniquely identifying information indicating a portion of the sample section in the digital content, wherein the sample section is non-encrypted and used for providing a preview, and wherein the uniquely identifying information is included in the management information;

a reproducing unit configured to;

reproduce the digital source data based on the DRM information, and

reproduce the read sample section without using the DRM information; and

a controller configured to control the retrieving unit, the receiving unit, the processing unit and the reproducing unit.

5. The apparatus of claim 4, further comprising:

a transmitting unit configured to transmit the identification information to the external source using the URL information, wherein the controller controls the transmitting unit.

6. The apparatus of claim 4, wherein the memory stores the requested DRM information to be received from the external source.

7. The apparatus of claim 4, wherein the controller is configured to control the memory to store the requested DRM information after payment for the DRM information.

8. The apparatus of claim 4, wherein the digital content comprises a plurality of digital audios or videos.