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

• US 8,140,437 B2
• Filed: 08/29/2006
• Issued: 03/20/2012
• Est. Priority Date: 03/13/2001
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hyung Sun, Kim, Byung Jin
• Primary Examiner(s): Fishcher, Andrew J.
• Assistant Examiner(s): OBEID, MAMON A
• Application Number:
  US11/511,411
• Publication Number:
  US 20060294015A1
• Time in Patent Office: 2,030 Days
• Field of Search: 705 50- 79, 725/109, 725/110, 725/112, 380/201, 380/227, 380/278, 380/279
• 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 content, comprising the steps of: (a) receiving a digital content from an external source, the digital content protected by Digital Right Management (DRM) information, the DRM information authorizing a reproduction of the digital content; (b) requesting the DRM information to an external source based on URL (Uniform Resource Locator) information in order to normally reproduce the digital content; and (c) reproducing the digital content based on the DRM information.

Claims

1. A method of reproducing digital content in a data reproducing device, the method being performed by at least one device, the method comprising:

(a) receiving a unitary item of digital content from a first external source, the unitary item of digital content including an encrypted content section and a sample section, wherein Digital Right Management (DRM) information is used for authorizing a reproduction of the encrypted content section,

wherein the unitary item of digital content is associated with management information including additional information about the unitary item of digital content, and

wherein the additional information includes a Uniform Resource Locator (URL) information, an identification information assigned to the unitary item of digital content, and indication information for providing a preview of the unitary item of digital content;

(b) in response to a request to reproduce the encrypted content section, automatically reproducing the sample section after it is determined that the DRM information does not exist in the reproducing device,

wherein the sample section is reproduced using the indication information indicating a portion of the sample section in the unitary item of digital content, and

wherein the sample section is non-encrypted, the sample section is a subset of the unitary item of digital content, and the sample section is used for providing a preview;

(c) after reproducing the sample section, receiving the DRM information from a second external source using the URL information and the identification information, wherein the second external source is indicated by the URL information,

wherein the DRM information is associated with the identification information of the received unitary item of digital content; and

(d) reproducing the encrypted content section using the received DRM information.

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

3. The method of claim 1, wherein the first external source is different from the second external source.

4. The method of claim 1, wherein the step of receiving the DRM information comprises:

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

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

12. The method of claim 1, wherein a portion of the unitary item of digital content other than the sample section is encrypted.

5. An apparatus for reproducing digital content and programmed to perform the following steps:

receiving a unitary item of digital content from a first external source, the unitary item of digital content including an encrypted content section and a sample section, wherein Digital Right Management (DRM) information is used for authorizing a reproduction of the encrypted content section,

wherein the unitary item of digital content is associated with management information including additional information about the unitary item of digital content,

wherein the additional information includes a Uniform Resource Locator (URL) information, an identification information assigned to the unitary item of digital content, and indication information for providing a preview of the unitary item of digital content,

in response to a request to reproduce the encrypted content section, automatically reproducing the sample section after it is determined that the DRM information does not exist in the reproducing device,

wherein the sample section is reproduced using the indication information indicating a portion of the sample section in the unitary item of digital content, and

wherein the sample section is non-encrypted, the sample section is a subset of the unitary item of digital content, and the sample section is used for providing a preview,

after reproducing the sample section, receiving the DRM information from a second external source using the URL information and the identification information, wherein the second external source is indicated by the URL information,

wherein the DRM information is associated with the identification information of the received unitary item of digital content, and

reproducing the encrypted content section using the received DRM information.

6. The apparatus of claim 5, further programmed to perform a step of:

transmitting the identification information to the second external source using the URL information.

7. The apparatus of claim 5, further programmed to perform a step of:

storing the requested DRM information to be received from the second external source.

8. The apparatus of claim 7, wherein the requested DRM information is stored bound to an identification information.

9. The apparatus of claim 7, wherein the requested DRM information is stored after payment for the DRM information.

10. The apparatus of claim 5, wherein the unitary item of digital content comprises a plurality of digital audios or videos.

11. The apparatus of claim 5, wherein the first external source is different from the second external source.

13. The apparatus of claim 5, wherein a portion of the unitary item of digital content other than the sample section is encrypted.