Systems and techniques to provide distributed document ver sion control. In general, in one
implementation, the technique includes: receiving a request to take an action with respect to …

(57) ABSTRACT A cell phone is equipped with a 2D optical sensor, enabling a variety of
applications. For example, such a phone may also be provided with a digital watermark …

(57) ABSTRACT A steganographic embedder associates data with a media signal by
encoding the data, a link to the data, or a combi nation of both into the media signal. The …

The present invention relates generally to systems for creat ing and authenticating printed
objects using authentication information. One implementation recites: An apparatus for …

We provide a system for issuing identification documents to a plurality of individuals,
comprising a first database, a first server, and a workstation. The first database stores a …

US8769297B2 - Method for increasing the functionality of a media player/recorder device or an
application program - Google Patents US8769297B2 - Method for increasing the functionality of …

4,677,466 A 6, 1987 Lert et al. 6,286,036 B1 9, 2001 Rhoads 4,682,370 A 7, 1987 Matthews
6,292,092 B1 9, 2001 Chow et al. 4,697,209 A 9, 1987 Kiewit et al. 6,304,523 B1 10/2001 …

2008-11-05 Assigned to DIGIMARC CORPORATION (FORMERLY DMRC CORPORATION)
reassignment DIGIMARC CORPORATION (FORMERLY DMRC CORPORATION) …

CORRESPONDING RESPONSES THROUGH COLLABORATIVE PROCESSING US
PATENT DOCUMENTS filed on May 14, 2001, which is a continuation-in-part of application …

The present disclosure relates generally to identification documents and related methods
and apparatus. One claim recites a method to determine whether to authenticate an …