EMBEDDING INTERACTIVE DATA INTO AN AUDIOVISUAL CONTENT BY WATERMARKING
First Claim
1. Method for referencing and interconnecting contents, applications and metadata to an audiovisual content, comprising the step of inserting a digital watermark (5) into said audiovisual content during an audiovisual content encoding step, said digital watermark being possibly used for allowing a user to reproduce or exploit additional contents supplementing those provided by said audiovisual content, characterized in that said digital watermark (5) is inserted into said audiovisual content by subdividing it into a plurality of consecutive “
- I”
frames (11a,11b,11c) of said audiovisual content.
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Accused Products
Abstract
A method for referencing and interconnecting contents, applications and metadata to an audiovisual content is described, especially for iTV of for distribution on DVD, which comprises the step of inserting a digital watermark into the audiovisual content during an audiovisual content encoding step, the digital watermark being possibly used for allowing a user to reproduce or exploit additional contents supplementing those provided by the audiovisual content, wherein the digital watermark is inserted into the audiovisual content as data frame with header and body by subdividing it into a plurality of consecutive ‘I’ frames and forcing the parity of LSBs of mid-frequency providing an auxiliary watermark channel, e.g. in an MPEG2 transport stream.
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Citations
25 Claims
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1. Method for referencing and interconnecting contents, applications and metadata to an audiovisual content, comprising the step of inserting a digital watermark (5) into said audiovisual content during an audiovisual content encoding step, said digital watermark being possibly used for allowing a user to reproduce or exploit additional contents supplementing those provided by said audiovisual content, characterized in that said digital watermark (5) is inserted into said audiovisual content by subdividing it into a plurality of consecutive “
- I”
frames (11a,11b,11c) of said audiovisual content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 23)
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12. Method of operation of a decoder which allows for referencing and interconnecting contents, applications and metadata to an audiovisual content, said method comprising the steps of:
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finding a digital watermark (5) in said audiovisual content; comparing said digital watermark (5) with a list of digital watermarks known to said decoder; and carrying out a certain action corresponding to said digital watermark, wherein said digital watermark (5) is subdivided into a plurality of consecutive “
I”
frames (11a,11b,11c) of said audiovisual content. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25)
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Specification