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Rade Petrovic: Formation and analysis of signals with common and transaction watermarks. Verance Corporation, Barry R Lipsitz, August 6, 2002: US06430301 (183 worldwide citation)

A system for embedding and detecting digital watermarks, e.g., for copyright protection of digital content distributed via the Internet or other channels. Different copies of content, such as audio data, are formed with a common watermark (CW), and different transaction watermarks (TW). Based on a u ...


2
Eric Metois, Rade Petrovic, Kanaan Jemili: Method and apparatus for detecting processing stages applied to a signal. Verance Corporation, Lipsitz & McAllister, May 16, 2006: US07046808 (135 worldwide citation)

A system for determining the amount of processing that has been applied to watermarked signal. A steganographic signal is provided that includes an original signal and an embedded fragile watermark. The fragile watermark is characterized by a low energy and a high redundancy in comparison to a robus ...


3
Rade Petrovic, Joseph M Winograd: Remote control signaling using audio watermarks. Verance Corporation, Barry R Lipsitz, Douglas M McAllister, May 18, 2004: US06737957 (130 worldwide citation)

A system for using a watermark embedded in an audio signal to remotely control a device. Various devices such as toys, computers, and appliances, equipped with an appropriate detector, detect the hidden signals, which can trigger an action, or change a state of the device. The watermarks can be used ...


4
Rade Petrovic, Babak Tehranchi, Joseph M Winograd: System reactions to the detection of embedded watermarks in a digital host content. Verance Corporation, Lipsitz & McAllister, May 6, 2008: US07369677 (127 worldwide citation)

Methods for adapting the operation of a system in response to the detection of embedded watermarks from a digital host content are provided. A digital host content is received and examined for the presence of watermarks. In response to the detection of embedded watermarks and in accordance with the ...


5
Rade Petrovic, Kanaan Jemili, Joseph M Winograd, Eric Metois: Apparatus and method for embedding and extracting information in analog signals using distributed signal features. Verance Corporation, Rothwell Figg Ernst & Manbeck, January 16, 2001: US06175627 (120 worldwide citation)

Apparatus and methods are provided for embedding or embedding digital data into an analog host or cover signal. A distributed signal feature of the cover signal in a particular domain (time, frequency or space) is calculated and compared with a set of predefined quantization values corresponding to ...


6
Joseph M Winograd, Rade Petrovic, Eric Metois, Kanaan Jemili: Method and apparatus for preventing removal of embedded information in cover signals. Verance Corporation, Rothwell Figg Ernst & Kurz, November 7, 2000: US06145081 (106 worldwide citation)

Apparatus and methods are provided for embedding watermark information into a cover signal, such as an audio signal, video signal, or still image signal, in a manner that prevents the watermark information from being removed without degrading the quality of the cover signal. This is accomplished by ...


7
Rade Petrovic: Apparatus and method for embedding and extracting information in analog signals using replica modulation. Verance Corporation, Rothwell Figg Ernst & Manbeck, July 30, 2002: US06427012 (101 worldwide citation)

Apparatus and methods are provided for embedding or encoding auxiliary signals into an analog host or cover signal. A replica of the cover signal or a portion of the cover signal in a particular domain (time, frequency or space) is generated according to a stego key specifying modification values to ...


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Rade Petrovic: Apparatus and method for embedding and extracting information in analog signals using distributed signal features and replica modulation. Verance Corporation, Rothwell Figg Ernst & Manbeck, January 27, 2004: US06683958 (78 worldwide citation)

Apparatus and methods are provided for embedding or embedding digital data into an analog host or cover signal. A distributed signal feature of the cover signal in a particular domain (time, frequency or space) is calculated and compared with a set of predefined quantization values corresponding to ...


10
Douglas Wong, Chong U Lee: Pre-processed information embedding system. Verance Corporation, Lipsitz & McAllister, June 28, 2005: US06912315 (75 worldwide citation)

Auxiliary information (150) representing binary or multi-level (M≧2) logical values is embedded into successive segments (110) of an audio, video or other data signal in response to a user request to download the data signal via an on-line distributor (350) on a computer network such as the Internet ...



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