Koninklijke Philips Corporation N.v.

Genkey Netherlands B.v.

Civolution B.v.

Signify Holding B.v.

Philips Lighting Holding B.v.

Irdeto Corporate B.v.

Aweke Negash Lemma

Thomas Andreas Maria Kevenaar

Mehmet Utku Celik

Matthias Wendt

Dirk Jeroen Breebaart

Johan Cornelis Talstra

Leon Maria Van De Kerkhof

Wolfgang Otto Budde

Antonius Hermanus Maria Akkermans

Minne Van Der Veen

Javier Francisco Aprea

Alphons Antonius Maria Lambertus Bruekers

Steffen Clarence Pauws

Fabio Vignoli

Koen Theo Johan De Groot

Paulus M H M A Gorissen

Wilhelmus P A J Michiels

Emile Josephus Carlos Kelkboom

Sabri Boughorbel

Stefan Katzenbeisser

Berk Gokberk

A lighting system and a method for an operating a lighting system, enabling to obtain an identification tag comprised in lighting design data directly from an output beam, i.e. from the emitted light of the at least one lighting unit. It is thus possible to trace any unauthorized distribution of a lighting design by monitoring the emitted light without the need to directly access the controller or any other part of the lighting system.

Lighting system and method for operating a lighting system

A lighting system and a method for a operating a lighting system, enabling to obtain an identification tag () comprised in lighting design data () directly from an output beam (), i.e. from the emitted light of the at least one lighting unit (). It is thus possible to trace any unauthorized distribution of a lighting design by monitoring the emitted light without the need to directly access the controller or any other part of the lighting system.

A method of watermarking a video signal includes encoding the video signal using at least one encoding parameter that is time-varied according to a watermarking pattern. The parameter affects information lost while encoding the signal. The parameter may be a quantization factor corresponding to a particular coefficient of an encoding transform. The parameter may be an element of a quantization matrix corresponding to a particular coefficient in a block DCT transform. The method may be implemented in devices with limited processing resources by means of a software update. The method enables the devices to imprint an encoded signal with a robust watermark, which may survive subsequent decompression and recompression. Alternatively, a video signal may be watermarked by modifying a magnitude of a non-dc spatial frequency component in a manner which varies with time according to a watermarking pattern. Corresponding watermark detection methods and watermarking devices also are disclosed.

Video watermarking

The invention relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system comprises at least one or more hardware components, an enrollment means, and a verifying means, wherein said enrollment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists. The invention aims to provide a solution to the above identified drawbacks and thereto at least one of said hardware components is provided with at least one component specific data feature associated therewith and wherein said enrollment means are arranged in associating at least one of said component specific data features with said biometric template data.

System and method for verifying the identity of an individual by employing biometric data features associated with the individual

The invention relates to a method for generating a representation of a finger print minutiae information. The invention also relates to a method for generating a representation of a finger print for biometric template protection purposes Biometric template protection techniques provide technological means to protect the privacy of biometric reference information stored in biometric. systems These methods stand in sharp contrast to approaches where biometric information is protected only by legislation and procedures around storage facilities. These systems are not reliable as they are susceptible to human and procedural errors. Template protection guarantees the protection of biometric information without the assumption that individuals are trusted or procedures are properly implemented.

Method and system for generating a representation of a finger print minutiae information

The invention relates to a method for verifying the identity of an individual by employing biometric data features associated with the individual, which method provides privacy of said biometric data features, comprising at least the steps of: a) for enrollment purposes deriving a first biometric template from at least a first set of first biometric data features associated with said individual, and b) for identity verifying purposes deriving a further biometric template from at least a further set of said first biometric data features associated with said individual, and c) comparing said further biometric template with said first biometric template. The invention also relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system at least comprises: an enrollment means and a verifying means, wherein said enrollment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists.

Method and system for verifying the identity of an individual by employing biometric data features associated with the individual

A system for cryptographic processing of content comprises an input for receiving the content. A plurality of look-up tables represents a white-box implementation of a combined cryptographic and watermarking operation. The look-up tables represent processing steps of the combined cryptographic and watermarking operation and the look-up tables being arranged for being applied according to a predetermined look-up scheme. The look-up scheme prescribes that an output of a first look-up table of the plurality of look-up tables be used to generate an input of a second look-up table of the plurality of look-up tables. The combined cryptographic and watermarking operation comprises a cryptographic operation and a watermarking operation. A control module looks up values in the plurality of look-up tables in dependence on the received content and in accordance to the look-up scheme, thereby applying the combined cryptographic and watermarking operation to the content.

Cryptographic processing of content

A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrollment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of x, y, and angle &#x3b1;. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.

Robust biometric feature extraction with and without reference point

A method and apparatus for processing audio for playback to provide a smooth transition between a beginning region of an audio track and an end region of a previous audio track is disclosed. A quantity representative of a chromagram is calculated for each of the audio tracks and the mixing points for the beginning and end regions of each audio track are identified. A quantity representative of a chromagram at the mixing point of the beginning region of the audio track and a quantity representative of a chromagram at the mixing point of the end region of the previous audio track are correlated to determine an order of audio tracks for playback and/or to determine the duration of the mix transition.

Method and apparatus for processing audio for playback

There is described a system () for processing an input signal () to generate a corresponding encoded output signal (). The system () includes a plurality of quantizing devices () coupled in series, the system (being configured in operation to reduce tandem quantization noise arising therein by:

Method of reducing quantization noise

Method and apparatus are described for compensating for time offset in a received signal, so as to correctly align the frame sequence of a received signal to a sequence of transmitted symbols. Each symbol extends over Tsignal samples. The received signal is first divided into a sequence of frames of length T, and then each framedivided into a multiplicity of Nsub-frames. Subsequently, Nsequences of values are formed, where every successive value in each sequence is derived from the corresponding sub-frame within each successive frame. Each of the Nsequences is an estimate for the correctly aligned sequence of transmitted symbols.

Decoding of watermarked information signals

A method of generating a watermark signal, embedding the watermark signal within a multimedia signal, and subsequently detecting the watermark signal is described. The watermark signal is the sum of two sequences of values, the second sequence of values being a circularly shifted version of the first sequence.

Time domain watermarking of multimedia signals

The invention relates to a system for detecting a watermark using informed detection. A first signal potentially having a watermark embedded is received () as is a second signal corresponding to the original signal. The signals are segmented () into symbol segments. For each symbol segment a first characteristic is determined () for a first section and a second characteristic is determined () for a second section in response to the first and second signals in those sections. Specifically, ratios between average envelopes are determined. Thus, the first and second characteristic is indicative of the variations of the envelope during a watermark symbol. A watermark symbol estimate is determined () from the first and second characteristic. A sequence of estimated watermark symbols is compared to reference watermark symbols and the presence of a watermark symbol is determined () depending on the comparison. The invention is particularly suitable for improved detection of a multiplicative watermark.

Method and apparatus for detecting a watermark in a signal

Method and apparatus are described for compensating for a linear time scale change in a received signal, so as to correctly rescale the frame sequence of the received signal. Firstly, an initial estimate of the sequence of symbols is extracted from the received signal. Successive estimates of correctly time scaled sequences of the symbols are then generated by interpolating the values of the initial estimates.

Growing community of inventors

Eindhoven, Netherlands

Aweke Negash Lemma