11
Geoffrey B Rhoads: Methods for controlling systems using control signals embedded in empirical data. Digimarc Corporation, Klarquist Sparkman Campbell Leigh & Whinston, November 3, 1998: US05832119 (444 worldwide citation)

An embedded multi-bit signal is steganographically detected from empirical data, such as image or audio data, and some aspect of a related system's operation is controlled in accordance therewith. One application of the invention is a video playback or recording device that is controlled in accordan ...


12
Geoffrey B Rhoads: Method and apparatus for robust information coding. Digimarc Corporation, Klarquist Sparkman Campbell Leigh & Whinston, May 5, 1998: US05748783 (436 worldwide citation)

A digital signal is imperceptibly embedded into an input source signal, such as an image or video signal, to produce an encoded (sometimes termed "watermarked") signal. The principle of quasi-rotational symmetry is employed to facilitate detection of the embedded signal notwithstanding rotation of t ...


13
Joel R Meyer, Geoffrey B Rhoads: Establishing and interacting with on-line media collections using identifiers in media signals. Digimarc Corporation, Digimare Corporation, December 7, 2004: US06829368 (366 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 se ...


14
Tony F Rodriguez, Geoffrey B Rhoads, Bruce L Davis, J Scott Carr: Watermarked business cards and methods. Digimarc Corporation, William Y Conwell, Digimarc Corporation, November 18, 2003: US06650761 (360 worldwide citation)

A person's business card is steganographically encoded with plural-bit data. When presented to a computer system with an optical sensor, the plural-bit data is decoded and used to trigger various functionality. For example, the system can link to a remote data store containing updated contact i ...


15
Geoffrey B Rhoads: Photographic products and methods employing embedded information. Digimarc Corporation, Klarquist Sparkman Campbell Leigh & Whinston, October 13, 1998: US05822436 (340 worldwide citation)

Technology is now available permitting consumers to make amateur-or even professional-grade copies of photographs. For wedding and portrait photographers, in particular, the business of making duplications is fundamental to their livelihoods. The threat of such copying is felt strongly. To redress t ...


16
Alastair M Reed, Geoffrey B Rhoads: Color adaptive watermarking. Digimarc Corporation, Joel R Meyer, Digimarc Corporation, July 8, 2003: US06590996 (329 worldwide citation)

A color mapping process enhances a watermark by computing a change in colors that is less visible for a given watermark strength. The mapping process provides smooth transitions from one color region to another, and may be implemented efficiently with a 3D look up table. A user interface scheme enab ...


17
Geoffrey B Rhoads: Steganographic system. Digimarc Corporation, Klarquist Sparkman Campbell Leigh & Whinston, December 15, 1998: US05850481 (322 worldwide citation)

An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned and the carrier thereby identified. The method and apparatus are characterized by robustness desp ...


18
Geoffrey B Rhoads: Image steganography system featuring perceptually adaptive and globally scalable signal embedding. Digimarc Corporation, Klarquist Sparkman Campbell Leigh & Whinston, May 5, 1998: US05748763 (304 worldwide citation)

An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive action can thereby be taken. In one ...


19
Geoffrey B Rhoads: Digital watermarks and methods for security documents. Digimarc Corporation, William Y Conwell, Digimarc Corporation, February 5, 2002: US06345104 (300 worldwide citation)

Security documents (e.g. passports, currency, event tickets, and the like) are encoded to convey machine-readable multi-bit binary information (e.g., a digital watermark), usually in a manner not alerting human viewers that such information is present. The documents can be provided with overt or sub ...


20
Bruce L Davis, Tony F Rodriguez, Geoffrey B Rhoads: Integrating digital watermarks in multimedia content. Digimarc Corporation, Joel R Meyer, Digimarc Corporation, August 26, 2003: US06611607 (299 worldwide citation)

A method for decoding auxiliary data from media signals in multimedia content decodes watermarks from different media signals and uses the watermarks to control processing of the multimedia content. A copy control method decodes a watermark from one of the media signals in multimedia content, and us ...



Click the thumbnails below to visualize the patent trend.