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

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.

1 . A method of reproducing digital content protected by Digital Right Management (DRM) information authorizing a reproduction of the digital content, comprising:
 determining whether sample data corresponding to the digital content is present based on first indication information indicating a presence of the sample data, wherein the sample data is associated with encrypted digital data and is not protected;   if the sample data is determined to be present, reading second indication information corresponding to attribute information of the sample data; and   reproducing the sample data based on the second indication information without considering the DRM information, wherein   the first indication information is inserted into an information field referring to the digital content, and   the second indication information includes at least one of location information, identification information and management information.   
   
   
       2 . The method of  claim 1 , wherein
 the location information includes at least one of sample data starting location information and sample data ending location information,   the identification information is based on one of device identifying information and contents identifying information, and   the management information includes navigation data.   
   
   
       3 . The method of  claim 1 , wherein the identification information indicates a duration of the sample data. 
   
   
       4 . The method of  claim 1 , wherein
 the sample data comprises a plurality of portions associated with the corresponding portions of digital content, and   the step of reading second indication information includes reading identification information corresponding to each of the plurality of portions.   
   
   
       5 . An apparatus for reproducing digital content protected by Digital Right Management (DRM) information authorizing a reproduction of the digital content, comprising:
 a controller configured to
 determine whether sample data corresponding to the digital content is present based on first indication information indicating a presence of the sample data, wherein the sample data is associated with encrypted digital data and is not protected; 
 if the sample data is determined to be present, read second indication information corresponding to attribute information of the sample data; and 
 reproduce the sample data based on the second indication information without considering the DRM information, wherein 
   the first indication information is inserted into an information field referring to the digital content, and   the second indication information includes one of location information, identification information and management information.   
   
   
       6 . The apparatus of  claim 5 , further comprising a memory configured to store one of the first and the second indication information. 
   
   
       7 . The apparatus of  claim 5 , wherein
 the location information includes at least one of sample data starting location information and sample data ending location information,   the identification information is based on one of device identifying information and contents identifying information, and   the management information includes navigation data.   
   
   
       8 . The apparatus of  claim 5 , wherein the identification information indicates a duration of the sample data. 
   
   
       9 . The apparatus of  claim 5 , wherein
 the sample data comprises a plurality of portions associated with the corresponding portions of digital content, and   the controller is configured to read identification information corresponding to the plurality of portions.   
   
   
       10 . A computer readable storage medium having a data structure, comprising:
 digital content protected by Digital Right Management (DRM) information authorizing a reproduction of the digital content;   sample data associated with the digital content and not protected by the DRM information;   first indication information indicating a presence of the sample data; and   second indication information corresponding to attribute information of the sample data, wherein   the first indication information is inserted into an information field referring to the digital content, and   the second indication information includes at least one of location information, identification information and management information.   
   
   
       11 . The computer readable storage medium of  claim 10 , wherein
 the location information includes at least one of sample data starting location information and sample data ending location information,   the identification information is based on one of device identifying information and contents identifying information, and   the management information includes navigation data.   
   
   
       12 . The computer readable storage medium of  claim 10 , wherein the identification information indicates a duration of the sample data.