Geoffrey B Rhoads: Method and system for encoding image and audio content. Digimarc Corporation, William Y Conwell, Digimarc Corporation, June 11, 2002: US06404898 (191 worldwide citation)

Image or audio content data is encoded to steganographically convey plural bit auxiliary data. The content data is thereafter subjected to lossy compression/decompression, and the auxiliary data can still be recovered and used, e.g., to control associated audio or video equipment.

Geoffrey B Rhoads, Tony F Rodriguez: Methods for using wireless phones having optical capabilities. Digimarc Corporation, Digimarc Corporation, February 6, 2007: US07174031 (190 worldwide citation)

A wireless 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 decoder, permitting decoding of steganographic data on imaged objects. Movement of a phone may be inferred by sensing movement of an imag ...

Phillip Andrew Seder, J Scott Carr, Burt W Perry, Geoffrey B Rhoads: Methods for opening file on computer via optical sensing. Digimarc Corporation, Digimarc Corporation, July 12, 2005: US06917724 (185 worldwide citation)

By printing documents and other objects with machine readable indicia, such as steganographic digital watermarks or barcodes, a great variety of document management functions can be enabled. The indicia can be added as part of the printing process (after document data has been output by an originati ...

Geoffrey B Rhoads: Computer system linked by using information in data objects. Digimarc Corporation, Digimarc Corporation, August 10, 2004: US06775392 (181 worldwide citation)

Various improvements to steganographic systems, and applications therefore, are disclosed. The improvements include facilitating scale and rotation registration for steganographic decoding by use of rotationally symmetric steganographically embedded patterns and subliminal digital graticules; improv ...

Geoffrey B Rhoads: Printable interfaces and digital linking with embedded codes. Digimarc Corporation, Joel R Meyer, Digimarc Corporation, November 11, 2003: US06647130 (181 worldwide citation)

A physical medium is encoded with machine readable information that provides a human interface to a computer system. The information encoded into the medium indicates a computer implemented process, and is encoded according to a spectral encoding scheme, such as encoding by modifying color values of ...

Geoffrey B Rhoads, Bruce L Davis, Douglas B Evans: Portable devices and methods employing digital watermarking. Digimarc Corporation, Digimarc Corporation, January 30, 2007: US07171018 (178 worldwide citation)

Media objects are transformed into active, connected objects via identifiers embedded into them or their containers. In the context of a user's playback experience, a decoding process extracts the identifier from a media object and possibly additional context information and forwards it to a server. ...

Geoffrey B Rhoads: Steganographically encoding a first image in accordance with a second image. Digimarc Corporation, William Y Conwell, Digimarc Corporation, August 6, 2002: US06430302 (177 worldwide citation)

Multi-bit auxiliary information is hidden in imagery (e.g., digital photographs, video), using steganographic techniques. Such information can be used for various purposes, including identifying imagery as originating from a particular source, copy control, etc. In some embodiments, one image is enc ...

Geoffrey B Rhoads, Tony F Rodriguez, Tyler J McKinley, Marc D Miller, Kirstin Hierholzer: User control and activation of watermark enabled objects. Digimare Corporation, Digimare Corporation, February 21, 2006: US07003731 (176 worldwide citation)

Methods and systems for associating watermark enabled objects with machine behaviors. Machine behaviors refer to actions by devices or systems in response to a triggering event. Examples of these behaviors include fetching a web page, opening an email client to send an email to a specific person, in ...

William Y Conwell, Brett A Bradley, Geoffrey B Rhoads: Content identifiers triggering corresponding responses through collaborative processing. Digimarc Corporation, November 27, 2007: US07302574 (175 worldwide citation)

Fingerprint data derived from audio or other content is used as an identifier. The fingerprint data can be derived from the content. In one embodiment, fingerprint data supplied from two or more sources is aggregated. The aggregated fingerprint data is used to define a set of audio signals. An audio ...

Tony F Rodriguez, Jonathan Scott Carr, Geoffrey B Rhoads: Paper-based control of computer systems. Digimarc Corporation, William Y Conwell, Digimarc Corporation, January 20, 2004: US06681028 (174 worldwide citation)

Digital data is steganographically encoded in printed materials, and—when sensed by an appropriately-equipped webcam or other imaging device—can be used to link to associated electronic resources. Data hidden in a business card, for example, may enable linking to a person's electronic calendar— ...