Antonius A Kalker

8060444, Nov 15, 2011

Jul 31, 2006

11/496809

Antonius Kalker - Palo Alto CA, US
William Knox Carey - Mountain View CA, US

Hewlett-Packard Development Company, L. P. - Houston TX

G06F 21/00

705 51, 705 52, 705 57

Embodiments of the present invention pertain to determining whether a digital rights management system's native license is valid. According to one embodiment, a value of a decision indicator is accessed at a digital rights management system. The decision indicator is set by a trusted entity other than the digital rights management system because the digital rights management system does not have sufficient information to determine how to set the decision indicator. The value of the decision indicator is used at the decision rights management system to determine whether the native license associated with the digital rights management system is valid.

20060156328, Jul 13, 2006

Jul 1, 2004

10/563644

Minnie Van Der Veen - Eindhoven, NL
Peter Kaars - Sunnyvale CA, US
Antonius Kalker - Mountain View CA, US

H04N 7/16
H04H 9/00
H04N 7/00
H04N 11/00

725020000, 725135000, 725025000, 348468000

A method of and system for distributing a content item to a recipient. The content item contains a marker linked uniquely to the recipient. At a first point in time, the marker is inserted in the content item. At a second point in time, an association between the marker and the recipient of the content item is registered. The first point in time lies before a point in time at which the recipient is known. The marker is preferably inserted by means of a watermark. In an embodiment the first point in time lies at a point in time at which processing load is relatively low. Multiple markers can be inserted in a single content item.

20060161776, Jul 20, 2006

Jul 2, 2004

10/564295

Minne Van Der Veen - Eindhoven, NL
Antonius Adrianus Kalker - Mountain View CA, US

H04L 9/00

713176000

The present invention relates to methods, devices and a signal related to simplifying the embedding of watermarks in different copies of a media signal (x). The watermarking process is split into two parts, one that is based on signal dependent properties and one that is based on watermark specific properties. The signal dependent properties are determined in advance, while the watermark specific properties are determined at the time of delivery of the media signal. The signal dependent watermarking properties (p) of a media signal (x) are determined in a properties determining unit () and stored in a signal properties store (), such that the signal dependent properties can be used for embedding more than one watermark (W, W, W) in different copies of the media signal. In this way it is possible to embed watermarks in multiple copies of the same media signal with small time delays.

20060161777, Jul 20, 2006

Jul 5, 2004

10/564421

Antonius Adrianus Kalker - Mountain View CA, US
Minne Van Der Veen - Eindhoven, NL

Koninklijke Philips Electronics N.V. - Eindhoven

H04L 9/00

713176000

Disclosed are methods and systems for embedding and for detecting digital watermarks in information signals. The method of embedding a watermark comprises the steps of providing a watermark secret (), embedding () a digital watermark in an information signal () where said embedding is controlled by the watermark secret, calculating () a digital fingerprint () from the information signal, and storing () the calculated digital fingerprint as a reference digital fingerprint and storing, in relation to the reference digital fingerprint, a identifier data item from which the watermark secret can be derived.

20070071330, Mar 29, 2007

Nov 8, 2004

10/579412

Job Oostveen - Eindhoven, NL
Antonius Andrianus Kalker - Mountain View CA, US
Jaap Haitsma - Eindhoven, NL

G06K 9/62
G06F 17/30

382228000, 707003000

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 (), a fingerprint matching module (), a statistical module () and an identification module is provided. The fingerprint extraction module () receives an information signal forming part of a query object and constructs a query fingerprint. The fingerprint matching module () compares the query fingerprint to candidates stored in a database () 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. The threshold determiner () is arranged, on the basis of the distribution of the query fingerprint to derive an adaptive threshold distance within which the query fingerprint and a potentially best matching candidate may be declared similar by the identification module (). By setting a threshold which may depend on statistical data derived from the query and/or candidate fingerprint, an improved false acceptance rate F.A.R. may be achieved.

20070106900, May 10, 2007

Dec 7, 2004

10/596499

Antonius Adrianus Kalker - Mountain View CA, US

KONINKLIJKE PHILIPS ELECTRONIC, N.V. - EINDHOVEN

H04L 9/00

713176000

The present invention relates to a method, apparatus and computer program product enabling at least identification the presence data symbols that have been embedded in a media signal. A transmitted media signal is obtained (step ), which comprises a possibly distorted version of a host signal in which data symbols have been embedded by quantisation using a certain quantisation step size and to which dither with a set of dither values has been added. Several dither value intervals within the set are provided, where each interval corresponds to one dither value (step ). A histogram is determined for each interval (step ), where a histogram is determined for all sample values of a set of signal samples of the transmitted media signal and having a dither value in the corresponding interval. The separate histograms are combined and a rescaling factor is determined based on the combined histogram (step ) in order to estimate the quantisation step size.

20070168673, Jul 19, 2007

Jan 12, 2005

10/596928

Minne Van Der Veen - Eindhoven, NL
Aweke Lemma - Eindhoven, NL
Antonius Adrianus Kalker - Mountain View CA, US

KONINKLIJKE PHILIPS ELECTRONIC, N.V. - EINDHOVEN

H04L 9/00

713181000

A method of dynamically allocating payload bits in a watermarking system () is provided. The method including steps of: (a) determining one or more parameters to be conveyed in bits of a payload to be included in watermark information for embedding in programme content; (b) dynamically allocating the bits to corresponding of the one or more parameters so as to represent the one or more parameters in the payload; (c) including the payload in the watermark information; and (d) embedding the watermark information including the payload into the programme content. Such dynamic allocation of payload bits is capable of providing more effective use of payload capacity.

20080013794, Jan 17, 2008

Sep 6, 2005

11/574759

Antonius Adrianus Kalker - Mountain View CA, US
Antonius Akkermans - Eindhoven, NL

KONINKLIJKE PHILIPS ELECTRONICS, N.V. - EINDHOVEN

G06K 9/00

382115000

The present invention relates to a method and a system of recognizing an ear by locating an invariant point in a representation X of ear geometry. An idea of the present invention is the improve the well known Iannarelli algorithm in that the scheme of the present invention captures and processes all pixels values along an axis and may use an arbitrary number of axes to combine these pixel values to a complete feature vector with a sufficient level of discrimination. The prior art Iannarelli method is improved by performing a Fourier transformation of a polar representation e[θ, p] of the ear, whereby a transformed E[Θ/P] polar representation is created. This transformed representation is sampled to create an ear feature vector X.