EP 1218884 A2 20020703 - PROTECTING CONTENT FROM ILLICIT REPRODUCTION
Title (en)
PROTECTING CONTENT FROM ILLICIT REPRODUCTION
Title (de)
SCHUTZ DES INHALTES VOR UNERLAUBTER WIEDERGABE
Title (fr)
PROTECTION CONTRE LA REPRODUCTION ILLICITE DE CONTENUS
Publication
Application
Priority
- EP 0101207 W 20010205
- US 18083800 P 20000207
- US 53707900 A 20000328
Abstract (en)
[origin: WO0157867A2] A sufficient number of data items are selected (112) for inclusion in a data set so as to discourage a transmission of the entire set over a limited bandwidth communications path (130), such as the Internet. Each data item comprises one or more sections, which taken together constitute the complete data set. Each section of the data set is linked to another section of the data set, and each section's link is bound to the section via the use of one or more watermarks. Upon presentation of material for rendering, the presence of the entirety of the data set is verified (126) by ascertaining the presence of linked-to sections. For further security, the links between sections is formed by a random selection of each linked-to section. To verify that each linked-to section corresponds to the original section that was linked-to, each link contains an identifier of the linked-to section that can be used to determine that a retrieval of a linked-to section corresponds to the originally assigned linked-to section. If the identifier associated with the linked-to section does not properly match the presented linked-to section, a rendering of the data items of the data set is prevented. In a preferred embodiment, a closed linked list is formed, so that every section of the data set can be included in the verification process, if desired.
[origin: WO0157867A2] A sufficient number of data items are selected (112) for inclusion in a data set so as to discourage a transmission of the entire set over a limited bandwidth communications path (130), such as the Internet. Each data item comprises one or more sections, which taken together constitute the complete data set. Each section of the data set is linked to another section of the data set, and each section's link is bound to the section via the use of one or more watermarks. Upon presentation of material for rendering, the presence of the entirety of the data set is verified (126) by ascertaining the presence of linked-to sections. For further security, the links between sections is formed by a random selection of each linked-to section. To verify that each linked-to section corresponds to the original section that was linked-to, each link contains an identifier of the linked-to section that can be used to determine that a retrieval of a linked-to section corresponds to the originally assigned linked-to section. If the identifier associated with the linked-to section does not properly match the presented linked-to section, a rendering of the data items of the data set is prevented. In a preferred embodiment, a closed linked list is formed, so that every section of the data set can be included in the verification process, if desired.
IPC 1-7
IPC 8 full level
G06F 12/14 (2006.01); G06F 21/10 (2013.01); G06F 21/24 (2006.01); G06F 21/60 (2013.01); G06T 1/00 (2006.01); G10K 15/02 (2006.01); G10L 11/00 (2006.01); G10L 19/018 (2013.01); G10L 25/51 (2013.01); G11B 20/00 (2006.01); G11B 20/10 (2006.01); H04N 1/387 (2006.01); H04N 1/40 (2006.01)
CPC (source: EP)
G06T 1/0071 (2013.01); G11B 20/00086 (2013.01); G11B 20/00166 (2013.01); G11B 20/00695 (2013.01); G11B 20/00884 (2013.01); G06T 2201/0064 (2013.01)
Citation (search report)
See references of WO 0157867A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0157867 A2 20010809; WO 0157867 A3 20020418; CN 1214383 C 20050810; CN 1381047 A 20021120; EP 1218884 A2 20020703; JP 2003521791 A 20030715
DOCDB simple family (application)
EP 0101207 W 20010205; CN 01800849 A 20010205; EP 01949061 A 20010205; JP 2001557035 A 20010205