Broadcasting an information signal having special content for triggering an appropriate action in a user device

Abstract

The problem is solved by a method for broadcasting a broadcast signal, comprising generating an information signal having in time a first content up to a certain time and a second content after this time. The information signal is broadcast as a broadcast signal via a first communication link At least one first feature is being provided with respect to the second content, for example an advertisement. The second content is detected in the information signal using the at least one first feature. On detection of the second content in the information signal at least one second feature is extracted from the first content in the information signal preceding the second content. The at least one second feature is sent to a user device using a second communication link, different from the first communication link, the second communication link being faster than the first communication link

1 .- 14 . (canceled) 
     
     
         15 . Method for broadcasting a broadcast signal, comprising:
 generating an information signal having a first content and subsequently a second content;   broadcasting the information signal via a first communication link;   generating at least one previously determined first feature for the second content;   detecting of the second content in the information signal using the at least one previously determined first feature;   generating at least one second feature for the first content of the information signal preceding the second content upon detection of the second content in the information signal;   sending the at least one second feature for the first content to a user device via a second communication link.   
     
     
         16 . Method according to  claim 15 , wherein detecting comprises:
 extracting at least one third feature from the information signal;   comparing the at least one third feature with the at least one previously determined first feature for the second content;   generating a detection signal if the at least one third feature matches the at least one first feature.   
     
     
         17 . Method according to  claim 16 , wherein
 the at least one predetermined first feature comprises a first fingerprint for the second content; and wherein   the at least one third feature from the information signal comprises a second fingerprint.   
     
     
         18 . Method according to  claim 16 , wherein the at least one predetermined first feature comprises a first payload of a first watermark for the second content, wherein the at least one third feature comprises a second payload of the first watermark from the information signal; and wherein
 extracting the at least one third feature comprises detecting the first watermark; and   determining the second payload upon detection.   
     
     
         19 . Method according to  claim 15 , wherein the generating of the at least one second feature for the first content of the information signal preceding the second content comprises:
 buffering the information signal; and   extracting the at least one second feature from the buffered information signal of the first content preceding the second content upon detection of the at least one first feature in the information signal.   
     
     
         20 . Method according to  claim 19 , wherein the at least one second feature is a third fingerprint. 
     
     
         21 . Method according to  claim 19 , further comprising
 providing the information signal with a second watermark (W) with a payload, wherein the method is being executed with the watermark information signal; wherein   extracting the at least one second feature from the buffered information signal comprises detecting the second watermark (W) and determining the payload of the second watermark (W); wherein   the at least one second feature comprises the payload of the second watermark (W).   
     
     
         22 . Method according to  claim 15 , wherein the generating of the at least one second feature for the first content of the information signal comprises:
 extracting at least fourth feature from the information signal;   buffering the at least one fourth feature;   selecting the at least one second feature from the buffered at least one fourth feature upon detection of the at least one first feature in the information signal.   
     
     
         23 . Method according to  claim 22 , wherein the at least one fourth feature is a fourth fingerprint. 
     
     
         24 . Method according to  claim 22 , further comprising:
 providing the information signal with a second watermark (W) having a payload, wherein the method is executed with the watermarked information signal; wherein   extracting of the at least one fourth feature comprises detecting the second watermark in the watermarked information signal and determining the payload of the second watermark; and wherein   the at least one fourth feature is the determined payload of the second watermark.   
     
     
         25 . Method according to  claim 15 , further comprising:
 providing the information signal of a second watermark having a payload, wherein   generating the at least one second feature for the first content of the information signal comprises:   buffering the payload of the second watermark (W);   selecting the at least one second watermark from the buffered payload of the second watermark (W) upon detection of the at least one first feature in the information signal.   
     
     
         26 . Method according to  claim 15 , further comprising:
 providing the information signal with a second watermark (W) having a payload, wherein the payload of the second watermark comprises a first time stamp; and wherein   generating of the at least one second feature for the first content of the information signal comprises:   generating the at least one second feature having a second time stamp derived from the first time stamp from the payload, such that it corresponds to a value of the first time stamp associated with the first content preceding the second content in the information signal upon detection of the second content.   
     
     
         27 . Method according to any one of the  claims 15 , wherein generating the at least one second feature comprises
 generating a payload of a third watermark (X) upon detection of the second content; the method further comprising:   buffering of the information signal; and   embedding the third watermark (X) having the payload in the buffered information signal in the first content preceding the second content; and   broadcasting the buffered watermarked information signal via the first communication link.   
     
     
         28 . Broadcast arrangement for broadcasting a broadcast signal, comprising:
 a first generator for generating an information signal having a first content and subsequently a second content;   a first transmitter for broadcasting the information signal as broadcast signal via a first communication link;   a source for generating at least one first feature with respect to the second content;   a detector for detecting the second content in the information signal, using the at least one first feature;   a second generator for generating the at least one second feature for the first content of the information signal preceding the second content upon detection of the second content in the information signal;   a second transmitter for sending the at least one second feature for the first content to a user device via a second communication link wherein the arrangement is further adapted for executing the steps of the method according to claim  1 .