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Cryptography > Electric Signal Modification Electric Signal ModificationElectric Signal Modification patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/04/07 - 20070230708 - Watermarking a compressed information signal Disclosed is a method of embedding both a robust and a fragile watermark in an information signal which is compressed so as to include first signal samples having a first given value and further signal samples having a different value, wherein embedding the robust watermark. The method comprises the steps ... 04/05/07 - 20070076890 - Current flattening and current sensing methods and devices Flattening total current consumption of system having processing core and power supply input by current sensing within system at power supply input and controlling system current consumption such that system current is reduced if over reference current threshold, and increased if below reference current threshold. Inject additional current through digital ... 09/07/06 - 20060198526 - Image forming apparatus certificate sheet making method and certificate sheet processing method An image forming apparatus has a micropattern reading unit, an encoded image generating unit and a code printing control unit. The micropattern reading unit reads a micropattern of a sheet. The encoded image generating unit generates an encoded image. The encoded image has the micropattern and a private key of ... 07/20/06 - 20060159273 - Unauthorized-alteration detecting method, unauthorized-alteration detecting program, and recording medium having recorded the program A false alteration detecting method using an electronic watermark method of fragile type by number theoretic transform. A processing section sets parameters P, N, α of number theoretic transform (S101), and reads original image blocks fi,j(x,y) (S103), conducts number theoretic transform of fi,j(x,y) to calculate the number theoretic transform blocks ... 12/01/05 - 20050265556 - Signal processing circuit A signal processing circuit is configured by connecting a plurality of basic circuits connected in series, each of the basic circuits comprising an arithmetic circuit subjecting a first input signal and a second input signal to a signal processing; a first selection circuit outputting the first input signal or an ... ### FreshPatents.com Support |