(i9) United States
(12) Patent Application Publication
Rhoads et al.
(54) SIGNAL PROCESSING OF AUDIO AND VIDEO DATA, INCLUDING DERIVING IDENTIFYING INFORMATION
(76) Inventors: Geoffrey B. Rhoads, West Linn,
OR (US); J. Scott Carr, Los Gatos,
CA(US)
Correspondence Address:
DIGIMARC CORPORATION
9405 SW GEMINI DRIVE
BEAVERTON, OR 97008 (US)
(21) Appl.No.: 12/575,150
(22) Filed: Oct. 7, 2009
Related U.S. Application Data
(60) Continuation of application No. 11/545,081, filed on Oct. 5, 2006, now Pat. No. 7,602,940, which is a continuation of application No. 10/379,393, filed on Mar. 3, 2003, now Pat. No. 7,263,203, which is a continuation of application No. 09/292,569, filed on Apr. 15, 1999, now abandoned, said application No. 10/379, 393 is a continuation of application No. 09/998,763, filed on Nov. 29, 2001, now Pat. No. 6,738,495, which is a division of application No. 09/292,569, filed on Apr. 15, 1999, now abandoned.
(60) Provisional application No. 60/082,228, filed on Apr. 16, 1998, provisional application No. 60/082,228, filed on Apr. 16, 1998.
Publication Classification
The present invention relates generally to signal processing of media content, e.g., audio or video content. One form of signal processing derives identifying information from media content. One claim recites a method including: upon encountering audio or video content, and using a programmed electronic processor, attempting to derive identifying information from data representing the encountered audio or video content; if a digital watermark is not obtained from the data representing the encountered audio or video content, modifying the encountered audio or video content; and then attempting to attempting to derive identifying information from data representing the modified audio or video content. Of course, other claims are provided too.
