Systems and methods for signaling resource identifiers using watermarks

Abstract

A device may be configured to signal information using watermarks. A device may be configured to determine an identifier associated with an address of a resource associated with multimedia content and embed the identifier in a signal representing multimedia content. A device may be configured to receive a multimedia signal, parse an identifier associated with an address of a resource from the multimedia signal, generate a query including the identifier, and receive supplemental content in response to the query.

1 . A method for requesting supplemental content, the method comprising:
 receiving a multimedia signal;   
       extracting a watermark message from the multimedia signal;
 parsing a syntax element indicating a portion of an authority component from the watermark message; 
 parsing a syntax element indicating a path component from the watermark message; and 
 constructing a request for supplemental content by forming a resource identifier including the portion of the authority component and the path component. 
 
     
     
         2 . The method of  claim 1 , wherein the portion of the authority component is immediately subsequent to a scheme in the resource identifier. 
     
     
         3 . The method of  claim 2 , wherein the syntax element indicating the portion of the authority component includes a variable length string. 
     
     
         4 . The method of  claim 1 , further comprising parsing a syntax element indicating a code corresponding to a domain string, and wherein the resource identifier further includes the domain string. 
     
     
         5 . The method of  claim 4 , wherein the syntax element indicating a value of the code is 8-bits. 
     
     
         6 . The method of  claim 4 , wherein a value zero of the code corresponds to a domain string including the string vp1.tv. 
     
     
         7 . The method of  claim 1 , wherein the watermark message includes a watermark message indicated as being a universal resource identifier type watermark message. 
     
     
         8 . The method of  claim 1 , wherein the watermark message includes a watermark message indicated as being an emergency alert message type watermark message. 
     
     
         9 . A device comprising one or more processors configured to: 
       extract a watermark message from the multimedia signal;
 parse a syntax element indicating a portion of an authority component from the watermark message; 
 parse a syntax element indicating a path component from the watermark message; and 
 construct a request for supplemental content by forming a resource identifier including the portion of the authority component and the path component. 
 
     
     
         10 . The device of  claim 9 , wherein the portion of the authority component is immediately subsequent to a scheme in the resource identifier. 
     
     
         11 . The device of  claim 10 , wherein the syntax element indicating the portion of the authority component includes a variable length string. 
     
     
         12 . The device of  claim 9 , wherein the one or more processors are further configured to parse a syntax element indicating a code corresponding to a domain string, and wherein the resource identifier further includes the domain string. 
     
     
         13 . The device of  claim 12 , wherein the syntax element indicating a value of the code is 8-bits. 
     
     
         14 . The device of  claim 12 , wherein a value zero of the code corresponds to a domain string including the string vp1.tv. 
     
     
         15 . The device of  claim 9 , wherein extracting a watermark from a multimedia signal includes extracting a watermark embedded in a video or audio signal according to a specified watermark emission. 
     
     
         16 . The device of  claim 9 , wherein the device is selected from the group consisting of: a desktop or laptop computer, a mobile device, a smartphone, a cellular telephone, a personal data assistant (PDA), a television, a set-top box, a tablet device, or a personal gaming device. 
     
     
         17 - 20 . (canceled)