Patents by Inventor Antonius Andrianus Kalker

Antonius Andrianus Kalker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070071330
    Abstract: The invention relates to methods and apparatus for matching a query data object with a candidate data object by esetracting and comparing fingerprints of said data objects. In an embodiment of the invention apparatus comprising a fingerprint extraction module (110), a fingerprint matching module (210), a statistical module (120) and an identification module is provided. The fingerprint extraction module (110) receives an information signal forming part of a query object and constructs a query fingerprint. The fingerprint matching module (210) compares the query fingerprint to candidates stored in a database (215) to find at least on potentially best matching candidate. Meanwhile, the statistical module determines a statistical model of the query fingerprint so as to, for instance, determine the statistical distribution of certain information inside the query fingerprint.
    Type: Application
    Filed: November 8, 2004
    Publication date: March 29, 2007
    Inventors: Job Oostveen, Antonius Andrianus Kalker, Jaap Haitsma
  • Publication number: 20060156002
    Abstract: A watermark detection method is disclosed which is based on computing the cross-correlation between a suspect signal and a watermark. In order to be more robust against prolonged dominant signal components that adversely affect the correlation, the sequence of signal samples (61) to be correlated with the watermark is divided into sub-sequences (A(k)). The sub-sequences are processed, by a weighting function, to obtain modified sub-sequences (B(k)) that individually exhibit the original signal variations, but collectively (62) exhibit a flatter distribution of sample values. Dominant peaks in the signal are thereby substantially reduced.
    Type: Application
    Filed: July 7, 2003
    Publication date: July 13, 2006
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Alphons Antonius Maria Bruekers, Jaap Haitsma, Minne Van Der Veen, Antonius Andrianus Kalker