Method for securing and verifying a document

The invention relates to a method for securing a document including a visual element, carried out by a processing unit comprising processing means, the method comprising generation, from the visual element, of a reference security datum, and storage of the reference security datum, wherein the reference security datum is generated by means of an algorithm configured so as to generate: for any image acquired from the visual element, a security datum whereof the differences relative to the reference security datum are less than a determined threshold, and for any image acquired on a different visual element, a security datum whereof the differences relative to the reference security datum are greater than said threshold.

Security document with positive and negative authentication tilt images

Disclosed is a security document including an image layer with in a first image area an identification image. The document has in a second image area an authentication image that is composed of a first authentication image that is a positive version of the first image and a second authentication image that is a negative version of the first image. The authentication images can be observed at different angles and form a tilt image. Mutual comparison of the positive and negative tilt images and comparison with the identification image provides improved detection of unauthorized alterations.

Security document with a 3D colour photograph

Identification structure (1) with a portrait image (3) of a holder, the identification structure having a substrate (8,50), a laser sensitive layer (11,55) and a lens array (12,56) overlying the laser sensitive layer (11,55), the substrate including a printed pattern (9,54), the laser sensitive layer including a laser engraved image pattern (15,15′; 16,16′). The laser engraved image pattern forms a three dimensional portrait image (A,B) of the holder and the printed pattern forms a two-dimensional color pattern (C) of the portrait image of the holder, wherein the two-dimensional color pattern (C) and the three-dimensional portrait image (A,B) are adapted to be observed in a superimposed manner.

LED LIGHTING WITH INCANDESCENT LAMP COLOR TEMPERATURE BEHAVIOR

In a lighting device, sets of LEDs are employed using the natural characteristics of the LEDs to resemble incandescent lamp behavior when dimmed, thereby obviating the need for sophisticated controls. A first set of at least one LED produces light with a first color temperature, and a second set of at least one LED produces light with a second color temperature. The first set and the second set are connected in series, or the first set and the second set are connected in parallel, possibly with a resistive element in series with the first or the second set. The first set and the second set differ in temperature behavior, or have different dynamic electrical resistance. The light device produces light with a color point parallel and close to a blackbody curve. 1100. Lighting device () , comprising:{'b': '101', 'an LED driver () capable of generating dimmed LED current;'}{'b': 110', '300', '400', '500', '600', '111', '112', '101, 'a two-terminal LED module (; ; ; ; ), having two input terminals (, ) for receiving an input current (Iin) from the LED driver () and comprising{'b': '113', 'a first LED group () comprising at least one first type LED for producing light having a first color temperature;'}{'b': '114', 'a second LED group () comprising at least one second type LED for producing light having a second color temperature different from the first color temperature;'}wherein the module is capable of supplying LED currents to the LED groups, these LED currents being derived from the input current (Iin);{'b': 113', '114, 'wherein the LED module produces a light output having at least a light output contributions from the first LED group () and from the second LED group ();'}and wherein the module is designed to vary the individual LED currents in the individual LED groups in dependency of the average magnitude of the received input current (Iin), such that the color point of the light output of the module varies as a function of the input current magnitude.2. ...

LED LIGHTING DEVICE WITH INCANDESCENT LAMP COLOR TEMPERATURE BEHAVIOR

In a lighting device, sets of LEDs are employed using the natural characteristics of the LEDs to resemble incandescent lamp behavior when dimmed, thereby Obviating the need for sophisticated controls. A first set of at least one LED produces light with a first color temperature, and a second set of at least one LED produces light with a second color temperature. The first set and the second set are connected in series, or the first set and the second set are connected in parallel, possibly with a resistive element in series with the first or the second set. The first set and the second set differ in temperature behavior, or have different dynamic electrical resistance. In various embodiments, the sum of the currents provided to the first and second sets may be substantially equal to a magnitude of an input current. 1. A lighting device comprising:a plurality of light emitting diodes (“LEDS”);two terminals between which one or more LEDs of a first type, producing light having a first color temperature, and one or more LEDs of a second type, producing light having a second color temperature different from the first color temperature, are connected; and{'sub': 1', '2', 'in, 'an electronic division circuit configured to supply LED currents, Iand I, supplied to the one or more LEDs of the first and second types, respectively, as a function of a magnitude of an input current retrieved at the two terminals, I;'}{'sub': 1', '2', 'in, 'wherein the sum of the LED currents Iand Iis substantially equal to I.'}2. The lighting device of claim 1 , wherein the electronic division circuit is configured to supply the LEDs of the first and second types with constant current and to control the LED currents Iand Isuch that the formulas apply:{'br': None, 'i': I', '=p×I, 'sub': 1', 'in, '; and'}{'br': None, 'i': I', '=q×I, 'sub': 2', 'in, ';'}{'sub': 'in', 'wherein p and q denote percentages of the input current Isupplied to the LEDs of the first and second types, respectively.'}4. The ...

INTERVENTIONAL X-RAY

The invention relates to an interventional system comprising an introduction element () such as a catheter for being introduced into an object (), for instance, a person. A moving unit () such as a robot moves the introduction element within the object, wherein a tracking image generating unit () generates, using a radiation beam (), tracking images of the introduction element within the object and wherein a controller () controls the tracking image generating unit depending on movement parameters of the moving unit, which are indicative of the movement. The control operation of controller () allows reducing radiation dose applied to the object. 2. The interventional system as defined in claim 1 , wherein the controlling by the controller includes any one or a combination of i) switching on or off a radiation source of the tracking image generating unit capable of generating a radiation beam detectable by a detector of the tracking image generating unit after traversal of the object or ii) increasing or decreasing a frame rate of the tracking image generating unit claim 1 , or iii) increasing or decreasing the beam's intensity or iv) increasing or decreasing an aperture of a collimator of the tracking image generating unit.3. The interventional system as defined in claims 1 , further including a user input device configured to issue upon user interaction a request to change operation of the tracking image generating unit claims 1 , wherein the controller blocks said request until the provided movement parameter indicates that the movement parameter fulfills the movement condition.4. The interventional system as defined in claim 1 , wherein the controller is configured to cease claim 1 , responsive to an override request claim 1 , the blocking even though the movement parameter does not fulfill the movement condition.5. The interventional system as defined in claim 1 , wherein the interventional system further comprises a position determination unit for determining a ...

TUNABLE LIGHTING SYSTEM

A method for providing a light output from a lighting system () capable of emitting light within a lighting system color gamut () in an x-y color plane, comprising the steps of: receiving () a light output target comprising a target color point () and a target flux; comparing () the target color point with the lighting system color gamut (); and if the target color point is outside of the color gamut: determining () a first approximation color point () inside the color gamut based on a minimization of a distance in the x-y color plane between the target color point and the first approximation color point; determining () a highest possible flux achievable by the lighting system at the first approximation color point; if the highest possible flux achievable by the lighting system at the first approximation color point is equal to or larger than the target flux, control () the lighting system to provide light defined by the first approximation color point and the target flux; and if the highest possible flux achievable by the lighting system at the first approximation color point is lower than the target flux, determining () a second approximation color point () at which the lighting system is capable of providing the target flux based on a minimization of a distance in the x-y color plane between the first approximation color point and the second approximation color point; and controlling () the lighting system to provide light defined by the second approximation color point and the target flux. 1. Method for providing a light output from a lighting system capable of emitting light within a lighting system color gamut in an x-y color plane , comprising the steps of:receiving a light output target comprising a target color point and a target flux;comparing said target color point with said lighting system color gamut; andif said target color point is outside of said color gamut:determining a first approximation color point inside said color gamut based on a ...

MEDICAL ROBOTIC AND/OR CATHETER CONTROL SYSTEM

The invention relates to a medical system for applying a medical procedure. The medical system () comprises a medical device () like a surgical robot with a surgical instrument () for performing the medical procedure, wherein the medical device is adapted to perform a movement, for instance, a movement of the surgical instrument, relative to a reference device like a patient table () for applying the medical procedure. The medical device is attached to a wall and/or a ceiling () of a room () by an attaching system () and rigidly attached to the reference device by a fixation element (). Due to the attachment to the wall and/or the ceiling, the weight of the medical device does not need to be completely carried by, for instance, the patient table, wherein, due to the rigid attachment to the reference device, the medical procedure can still very accurately be performed. 1. A medical system for applying a medical procedure to a living being , wherein the medical system comprises:a medical device for performing the medical procedure, wherein the medical device is adapted to perform a movement relative to a reference device for applying the medical procedure, wherein the medical device includes a medical robotic device and/or a catheter control device,an attaching system for attaching the medical device to a wall and/or a ceiling of a room, wherein the attaching system is a suspension system for suspending the medical device on the wall and/or the ceiling of the room,a fixation element for rigidly attaching the medical device to the reference device, anda passive compliant element between the attaching system and the medical device, wherein the compliant element is adapted to provide compliance when the medical device is moved relative to the attaching system.2. The medical system as defined in claim 1 , wherein the compliant element comprises a spring element.3. The medical system as defined in claim 1 , wherein the compliant element is adapted to allow for movements of ...

Method for securing and verifying a document

The invention relates to a method for securing a document including a visual element, carried out by a processing unit comprising processing means, the method comprising generation, from the visual element, of a reference security datum, and storage of the reference security datum, wherein the reference security datum is generated by means of an algorithm configured so as to generate: for any image acquired from the visual element, a security datum whereof the differences relative to the reference security datum are less than a determined threshold, and for any image acquired on a different visual element, a security datum whereof the differences relative to the reference security datum are greater than said threshold.

X-ray imaging system for a catheter

The invention addresses the problem of correctly positioning a catheter and reducing radiation doses. It relates to an X-ray imaging system ( 1 ) for a robotic catheter, comprising said catheter ( 3 ), and a processing unit ( 5 ) for receiving X-ray images of a patient environment ( 15 ). By being adapted to receive one or more auxiliary information items and using said information for determining the catheter position, the processing unit does not entirely have to rely on a large number of scanned image data, thus helping to reduce radiation while correctly delivering the catheter position as a function of as few as a single image, preferably 2D, and said one auxiliary information items. Further, said processing unit allows for at least one of rendering an image and provide said image to a visualization device ( 21 ), and providing feedback, e.g. steering commands, to said robotic catheter.

SPATIAL DIMENSION DETERMINATION DEVICE FOR DETERMINING A SPATIAL DIMENSION OF A TARGET ELEMENT WITHIN AN OBJECT

The invention relates to a spatial dimension determination device for determining a spatial dimension of a target element like a vessel within an object (), for instance, within a person. Movement parameters describing a movement of an introduction element () moved by a moving unit () like a robot and several images showing the introduction element are used for determining a dimensional relation between an image dimension and a real dimension. A further image showing the target element is provided, wherein a real dimension of the target element is determined based on an image dimension of the target element in the further image and based on the determined dimensional relation. An unknown real physical dimension of a target element within the object can therefore accurately be determined from an image of the target element by using, inter alia, the movement parameters. 1. A spatial dimension determination device for determining a spatial dimension of a target element within an object , the spatial dimension determination device comprising:a movement parameters providing unit for providing movement parameters of a moving unit, wherein the movement parameters describe a movement of an introduction element within the object by defining a sequence of positions of the introduction element within the object, wherein the moving parameters providing unit is adapted to receive the movement parameters from the moving unit and to provide the received movement parameters,an images providing unit for providing several images, which correspond to different times and which show the introduction element at different positions during the movement,a dimensional relation determination unit for determining a dimensional relation between an image dimension, which is a dimension in an image generated by the imaging unit, and a real dimension based on the generated several images and the movement parameters, anda real dimension determination unit, wherein the images providing unit is ...

SECURITY DOCUMENT WITH POSITIVE AND NEGATIVE AUTHENTICATION TILT IMAGES

Disclosed is a security document including an image layer with in a first image area an identification image. The document has in a second image area an authentication image that is composed of a first authentication image that is a positive version of the first image and a second authentication image that is a negative version of the first image. The authentication images can be observed at different angles and form a tilt image. Mutual comparison of the positive and negative tilt images and comparison with the identification image provides improved detection of unauthorized alterations. 112345646781017287484478. Security document () comprising an image layer () with in a first image area () an identification image () comprising picture elements with predetermined brightness values on a positive brightness scale , and in a second image area () an authentication image () corresponding with the first image () , the authentication image () comprising at least two images ( ,) situated below lenses () such that at a first observation angle (α) , a first authentication image () is visible and at a second observation angle (α) , a second authentication image is visible () , wherein the first authentication image () is a positive image corresponding with the first image () with picture elements having brightness values that correspond to the brightness values of the identification image and the second authentication () image is a negative image corresponding with the first image () , with picture elements having brightness values that correspond to a reversed brightness scale that is obtained by making the brightest picture elements in the positive brightness scale appear darkest and making the darkest picture elements appear brightest , and wherein both the identification image () and the first authentication image () can be observed at a perpendicular viewing direction while the second authentication image () can be observed at a non-perpendicular viewing direction.21. ...

SECURITY DOCUMENT WITH A 3D COLOUR PHOTOGRAPH

Identification structure () with a portrait image () of a holder, the identification structure having a substrate (), a laser sensitive layer () and a lens array () overlying the laser sensitive layer (), the substrate including a printed pattern (), the laser sensitive layer including a laser engraved image pattern (). The laser engraved image pattern forms a three dimensional portrait image (A, B) of the holder and the printed pattern forms a two-dimensional color pattern (C) of the portrait image of the holder, wherein the two-dimensional color pattern (C) and the three-dimensional portrait image (A, B) are adapted to be observed in a superimposed manner. 11385011551256115595415151616. Identification structure () with a portrait image () of a holder , the identification structure having a substrate ( , ) , a laser sensitive layer ( , ) and a lens array ( , ) overlying the laser sensitive layer ( , ) , the substrate comprising a printed pattern ( , ) , the laser sensitive layer comprising a laser engraved image pattern ( , ′; , ′) , wherein the laser engraved image pattern forms a three dimensional portrait image (A , B) of the holder and the printed pattern forms a two-dimensional colour pattern (C) of the portrait image of the holder , wherein in a single perpendicular viewing position of the substrate the two-dimensional colour pattern (C) and the three-dimensional portrait image (A , B) are adapted to be simultaneously observed in a superimposed manner as a three-dimensional colour portrait.211515161611111314125675651314675. Identification structure () according to claim 1 , wherein the laser engraved image pattern ( claim 1 , ′; claim 1 , ′) is formed of at least two portrait images (A claim 1 , B) claim 1 , at different angles claim 1 , each image being formed of image lines (a claim 1 , an; b claim 1 , bn) claim 1 , wherein the image lines of the at least two portrait images are interlaced and grouped into sets (a claim 1 , b) claim 1 , . . . claim 1 , (an ...

INTERVENTIONAL SYSTEM

The invention relates to an interventional system comprising an introduction element () like a catheter for being introduced into an object (), for instance, a person. A moving unit () like a robot moves the introduction element within the object, wherein a tracking image generating unit () generates tracking images of the introduction element within the object and wherein a controller () controls the tracking image generating unit depending on movement parameters of the moving unit, which are indicative of the movement, such that the tracking images show the introduction element. This control can be performed very accurately based on the known real physical movement of the introduction element such that it is not necessary to, for instance, irradiate a relatively large area of the object for ensuring that the introduction element is really captured by the tracking images, thereby allowing for a reduced radiation dose applied to the object. 2. The interventional system as defined in claim 1 , wherein the tracking image generating unit comprises a collimator for collimating the radiation beam and wherein the controller is adapted to control the collimator such that the radiation beam is collimated depending on the provided movement parameters such that the radiation beam traverses a region of the object that includes the introduction element.3. The interventional system as defined in claim 2 , wherein the controller is adapted to control the collimator depending on a speed of the movement as defined by the movement parameters and/or a response time of the interventional system.4. The interventional system as defined in claim 3 , wherein the controller is adapted to control the collimator depending on the speed of the movement as defined by the movement parameters and/or the response time of the interventional system such that a part of the radiation beam claim 3 , which is in front of the introduction element with respect to a movement direction defined by the ...

Device and method for parallel quantitative analysis of multiple nucleic acids

The present invention relates to a process for conducting real-time PCR, and to a device for conducting the method of the present invention. The invention is especially suited for the simultaneous identification and quantification of nucleic acids present in a sample, e.g. a biological sample. Further, this invention describes a method for simultaneous quantitative analysis of multiple nucleic acid sequences in a single compartment by using an integrated nucleic acid microarray combined with a highly surface-specific readout device. The invention relates to a device wherein a surface which is either part of the chamber surface or a surface that is created in the reaction chamber, such as bead surface, is coated with capture probes and in the same chamber, a PCR reaction takes place.

Device and method for parallel quantitative analysis of multiple nucleic acids

The present invention relates to a process for conducting real-time PCR, and to a device for conducting the method of the present invention. The invention is especially suited for the simultaneous identification and quantification of nucleic acids present in a sample, e.g. a biological sample. Further, this invention describes a method for simultaneous quantitative analysis of multiple nucleic acid sequences in a single compartment by using an integrated nucleic acid microarray combined with a highly surface-specific readout device. The invention relates to a device wherein a surface which is either part of the chamber surface or a surface that is created in the reaction chamber, such as bead surface, is coated with capture probes and in the same chamber, a PCR reaction takes place.

Plasmon grating biosensor

The present invention discloses a novel concept for real-time, high-sensitivity optical biosensing that is suitable for cheap and simple incorporation in existing standard microscopes, and other similar apparatuses. Moreover, the present invention proposes to use surface plasmon polaritons (SPPs) on gold structured surfaces to localize the excitation and/or detection volume in an optical biosensor to a range <500 nm above the substrate surface. According to some embodiments the excitation and detection are performed on the substrate side, and the structure of the metal film is designed such that the excitation and the emission light path travel nearly perpendicular to the metal film.

METHOD OF SECURING AND VERIFYING A DOCUMENT

L'invention concerne un procédé de sécurisation d'un document comportant un élément visuel, mis en œuvre par une unité de traitement comprenant des moyens de traitement, le procédé comprenant la génération, à partir de l'élément visuel, d'une donnée de sécurité de référence, et la mémorisation de la donnée de sécurité de référence, dans lequel la donnée de sécurité de référence est générée au moyen d'un algorithme configuré de manière à générer : - pour toute image acquise de l'élément visuel, une donnée de sécurité dont les différences par rapport à la donnée de sécurité de référence sont inférieures à un seuil déterminé, et - pour toute image acquise sur un élément visuel différent, une donnée de sécurité dont les différences par rapport à la donnée de sécurité de référence sont supérieures audit seuil. The invention relates to a method of securing a document comprising a visual element, implemented by a processing unit comprising processing means, the method comprising generating, from the visual element, a data element. reference security, and the storing of the reference security data, in which the reference security data is generated by means of an algorithm configured to generate: - for any image acquired from the visual element, a datum whose differences with respect to the reference security data are less than a determined threshold, and for any image acquired on a different visual element, a security datum whose differences with respect to the reference security datum are above this threshold.

Microarray characterization system and method

A system and method is described for detecting a plurality of analytes in a sample. The characterization system ( 100 ) comprises an aperture array ( 108 ) and a lens array ( 110 ) for generating and focusing a plurality of excitation sub-beams on different sub-regions of a substrate. These sub-regions can be provided with different binding sites for binding different analytes in the sample. By detecting the different luminescent responses in a detector, the presence or amount of different analytes can be determined simultaneously. Alternatively or in addition thereto collection of the luminescence radiation can be performed using the lens array for directly collecting the luminescence response and for guiding the collected luminescence response to corresponding apertures. In a preferred embodiment, the excitation sub-beams are focused at the side of the substrate opposite of the lens array and an immersion fluid is provided between the lens array and the substrate to increase the collection efficiency of the luminescence radiation.

Interventional x-ray system

The invention relates to an interventional system comprising an introduction element (4) such as a catheter for being introduced into an object (9), for instance, a person. A moving unit (2) such as a robot moves the introduction element within the object, wherein a tracking image generating unit (3) generates, using a radiation beam (7), tracking images of the introduction element within the object and wherein a controller (8) controls the tracking image generating unit depending on movement parameters of the moving unit, which are indicative of the movement. The control operation of controller (7) allows reducing radiation dose applied to the object.

Interventional system

The invention relates to an interventional system comprising an introduction element (4) like a catheter for being introduced into an object (9), for instance, a person. A moving unit (2) like a robot moves the introduction element within the object, wherein a tracking image generating unit (3) generates tracking images of the introduction element within the object and wherein a controller (8) controls the tracking image generating unit depending on movement parameters of the moving unit, which are indicative of the movement, such that the tracking images show the introduction element. This control can be performed very accurately based on the known real physical movement of the introduction element such that it is not necessary to, for instance, irradiate a relatively large area of the object for ensuring that the introduction element is really captured by the tracking images, thereby allowing for a reduced radiation dose applied to the object.

Tunable lighting system

A method for providing a light output from a lighting system ( 100 ) capable of emitting light within a lighting system color gamut ( 202 ) in an x-y color plane, comprising the steps of: receiving ( 302 ) a light output target comprising a target color point ( 210, 219 ) and a target flux; comparing ( 304 ) the target color point with the lighting system color gamut ( 202 ); and if the target color point is outside of the color gamut: determining ( 310 ) a first approximation color point ( 212, 220 ) inside the color gamut based on a minimization of a distance in the x-y color plane between the target color point and the first approximation color point; determining ( 312 ) a highest possible flux achievable by the lighting system at the first approximation color point; if the highest possible flux achievable by the lighting system at the first approximation color point is equal to or larger than the target flux, control ( 309 ) the lighting system to provide light defined by the first approximation color point and the target flux; and if the highest possible flux achievable by the lighting system at the first approximation color point is lower than the target flux, determining ( 314 ) a second approximation color point ( 214, 222 ) at which the lighting system is capable of providing the target flux based on a minimization of a distance in the x-y color plane between the first approximation color point and the second approximation color point; and controlling ( 315 ) the lighting system to provide light defined by the second approximation color point and the target flux.

A method for encoding multiword information by wordwise interleaving and error protection, with error locative clues derived from high protectivity words and directed to low protectivity words, a method for decoding such information, a device for encoding and/or decoding such information, and a carrier provided with such information

A METHOD FOR ENCODING MULTIWORD INFORMATION BY WORDWISE INTERLEAVING AND ERROR PROTECTION, WITH ERROR LOCATIVE CLUES DERIVED FROM HIGH PROTECTIVITY WORDS AND DIRECTED TO LOW PROTECTIVITY WORDS, A METHOD FOR DECODING SUCH INFORMATION, A DEVICE FOR ENCODING AND/OR DECODING SUCH INFORMATION,AND A CARRIER PROVIDED WITH SUCH INFORMATION.MULTIWORD INFORMATION IS ENCODED AS BASED ON MULTIBIT SYMBOLS IN RELATIVE CONTIGUITY WITH RESPECT TO A MEDIUM (30), WHILST PROVIDING WORDWISE INTERLEAVING AND WORDWISE ERROR PROTECTION CODE FACILITIES. THIS MAY PROVIDE ERROR LOCATIVE CLUES ACROSS MULTIWORD GROUPS, THAT ORIGINATE IN HIGH PROTECTIVITY CLUE WORDS AND ARE DIRECTED TO LOW PROTECTIVITY TARGET WORDS. FURTHER, THE CLUE WORDS MAY HAVE A FIRST UNIFORM SIZE AND BE INTERSPERSED IN A FIRST UNIFORM MANNER. THE TARGET WORDS MAY HAVE A SECOND UNIFORM SIZE AND BE INTERSPERSED IN A SECOND UNIFORM MANNER. IN PARTICULAR, THE ORGANIZATION MAY BE APPLIED FOR USE WITH OPTICAL STORAGE.(FIG 5)

Microelectronic opiacal evanescent field sensor

There is provided a microelectronic sensor device (100) for the detection of target components (10) near a binding surface (12), comprising a source (21) for emitting a beam (101) of radiation having a wavelength incident at the binding surface (12); an optical structure (11) near the binding surface (12), for providing evanescent radiation, in response to the radiation incident at the binding surface (12), in a detection volume (4) bound by the binding surface (12) and extending over a decaylength away from the binding surface (12) into a sample chamber (2); and a detector (31) for detecting radiation (102) from the target component (10)1 present in the detection volume (4), in response to the emitted incident radiation (101) from the source (21) wherein the binding surface (12) is provided with upstanding walls of a dielectric material (3), for providing one or more detection volumes (4) bound to a maximum in plane detection volume dimension (Wl) smaller than a diffraction limit, the diffraction limit defined by the radiation wavelength and the medium (2) for containing the target components (10).

Led lighting with incandescent lamp color temperature behavior

In a lighting device, sets of LEDs are employed using the natural characteristics of the LEDs to resemble incandescent lamp behavior when dimmed, thereby obviating the need for sophisticated controls. A first set of at least one LED produces light with a first color temperature, and a second set of at least one LED produces light with a second color temperature. The first set and the second set are connected in series, or the first set and the second set are connected in parallel, possibly with a resistive element in series with the first or the second set. The first set and the second set differ in temperature behavior, or have different dynamic electrical resistance. The light device produces light with a color point parallel and close to a blackbody curve.

Tunable lighting system

A method for providing a light output from a lighting system (100) capable of emitting light within a lighting system color gamut (202) in an x-y color plane, comprising the steps of: receiving (302) a light output target comprising a target color point (210, 219) and a target flux; comparing (304) the target color point with the lighting system color gamut (202); and if the target color point is outside of the color gamut: determining (310) a first approximation color point (212, 220) inside the color gamut based on a minimization of a distance in the x-y color plane between the target color point and the first approximation color point; determining (312) a highest possible flux achievable by the lighting system at the first approximation color point; if the highest possible flux achievable by the lighting system at the first approximation color point is equal to or larger than the target flux, control (309) the lighting system to provide light defined by the first approximation color point and the target flux; and if the highest possible flux achievable by the lighting system at the first approximation color point is lower than the target flux, determining (314) a second approximation color point (214, 222) at which the lighting system is capable of providing the target flux based on a minimization of a distance in the x-y color plane between the first approximation color point and the second approximation color point; and controlling (315) the lighting system to provide light defined by the second approximation color point and the target flux.

Led lighting device with incandescent lamp color temperature behavior

Multi-color biosensor for detecting luminescence sites on a substrate having a refractive optical element for adjusting and focusing at least two incident irradiation beams of different wavelengths

A detection system for detecting luminescence sites on a substrate and including an irradiation unit for generating at least one excitation irradiation beam for exciting luminescence sites on the substrate; a first optical element, e.g. refractive element adapted for receiving at least two irradiation beams of different wavelengths or wavelength ranges, the at least two irradiation beams being excitation irradiation beam(s) to be focused on a substrate and/or luminescence irradiation beam(s) to be collected from the excited luminescence sites on the substrate; and an optical compensator for adjusting at least one of the at least two irradiation beams of different wavelengths or wavelength ranges so as to reduce or compensate for optical aberrations.

scanning microscope

Method and apparatus for water gauge detection

Recently developed methods for copy protection rely on a watermark detector to judge whether multimedia content can be copied or not. In such copy protection schemes, a watermark detector examines the multimedia content and outputs a signal (D) indicating whether a watermark is present or not. Known watermark detectors determine a decision variable (y) indicating to which extent the watermark is present, for example, the amount of correlation between the input signal and a reference copy of the watermark to be detected. The watermark is detected if the decision variable exceeds a predetermined threshold (y2). Such a detector is vulnerable to an attack which is described in this patent application. Disclosed is a watermark detector which increases the work load for an attacker by several orders of magnitude. To this end, the detector generates a random output signal for a predetermined range of decision values (y) between the threshold (y2) and a further threshold (y1).

Information carrier, encoding device, encoding method, decoding apparatus and decoding method

The invention relates to an information carrier comprising runlength limited marks in a track. The runlengths of the marks represent main channel bits and variations of a further parameter of the marks representing secondary channel bits. Not all marks have said variations, only marks of at least a predetermined runlength have said variations. The invention further relates to a device for encoding, a method for encoding, a device for encoding and a method for decoding.

Security document with a 3d colour photograph

A method for encoding multiword information by wordwise interleaving and error protection, with error locative clues derived from high protectivity words and directed to low protectivity words

Spatial dimension determination device for determining a spatial dimension of a target element within an object

The invention relates to a spatial dimension determination device for determining a spatial dimension of a target element like a vessel within an object (9), for instance, within a person. Movement parameters describing a movement of an introduction element (4) moved by a moving unit (2) like a robot and several images showing the introduction element are used for determining a dimensional relation between an image dimension and a real dimension. A further image showing the target element is provided, wherein a real dimension of the target element is determined based on an image dimension of the target element in the further image and based on the determined dimensional relation. An unknown real physical dimension of a target element within the object can therefore accurately be determined from an image of the target element by using, inter alia, the movement parameters.

Documento de seguridad con imágenes de autenticación inclinadas positiva y negativa

La invención se refiere a un documento de seguridad (1) que comprende una capa de imagen (2) en una primera área de imagen (3) con una imagen de identificación (4). El documento tiene en una segunda área de imagen (5) una imagen de autenticación (6) que se compone de una primera imagen de autenticación (7) que es una versión positiva de la primera imagen (4) y una segunda imagen de autenticación (8) que es una versión negativa de la primera imagen (4). Las imágenes de autenticación (7,8) se pueden observar desde diferentes ángulos y forman una imagen inclinada. La comparación mutua de las imágenes inclinadas positiva y negativa y la comparación con la imagen de identificación proporcionan una mejor detección de alteraciones no autorizadas.

Security document with positive and negative authentication tilt images

The invention relates to a security document (1) comprising an image layer (2) with in a first image area (3) an identification image (4). The document has in a second image area (5) an authentication image (6) that is composed of a first authentication image (7) that is a positive version of the first image (4) and a second authentication (8) image that is a negative version of the first image (4). The authentication images (7,8) can be observed at different angles and form a tilt image. Mutual comparison of the positive and negative tilt images and comparison with the identification image provides improved detection of unauthorised alterations.

Nanoantenna and uses thereof for biosensing

A metal nanoantenna for use in a biosensing device is described, the metal nanoantenna being arranged to exhibit at least two particle plasmon resonances or surface plasmon resonances (SPRs). The nanoantenna is for use in a sensor and allows detection at low concentration of biological components. To achieve this the nanoantenna can have an asymmetric structural configuration and spectrally separated resonances. Preferably there is a location in its structure providing local electromagnetic field enhancement at all of the SPRs. The metal nanoantenna can be used for background free measuring of a quantity of a biological component.

Security document with a 3d colour photograph

Identification structure (1) with a portrait image (3) of a holder, the identification structure having a substrate (8,50), a laser sensitive layer (11,55) and a lens array (12,56) overlying the laser sensitive layer (1 1,55), the substrate comprising a printed pattern (9,54), the laser sensitive layer comprising a laser engraved image pattern (15,15'; 16,16'), characterised in that the laser engraved image pattern forms a three dimensional portrait image (A,B) of the holder and the printed pattern forms a two- dimensional colour pattern (C) of the portrait image of the holder, wherein the two- dimensional colour pattern (C) and the three-dimensional portrait image (A,B) are adapted to be observed in a superimposed manner.

Security document with a 3d colour photograph

Security document with positive and negative authentication tilt images

The invention relates to a security document (1) comprising an image layer (2) with in a first image area (3) an identification image (4). The document has in a second image area (5) an authentication image (6) that is composed of a first authentication image (7) that is a positive version of the first image (4) and a second authentication (8) image that is a negative version of the first image (4). The authentication images (7,8) can be observed at different angles and form a tilt image. Mutual comparison of the positive and negative tilt images and comparison with the identification image provides improved detection of unauthorised alterations.

Document de sécurité comportant des images d'inclinaison d'authentification positive et négative

L'invention concerne un document de sécurité (1) comprenant une couche d'image (2) comportant, dans une première zone d'image (3), une image d'identification (4). Le document présente, dans une seconde zone d'image (5), une image d'authentification (6) qui est composée d'une première image d'authentification (7) qui est une version positive de la première image (4) et d'une seconde image d'authentification (8) qui est une version négative de la première image (4). Les images d'authentification (7, 8) peuvent être observées selon différents angles et former une image d'inclinaison. La comparaison réciproque des images d'inclinaison positive et négative et la comparaison avec l'image d'identification permettent de réaliser une détection améliorée de modifications non autorisées.

Nanoantenna and uses thereof for biosensing

A metal nanoantenna for use in a biosensing device is disclosed. The metal nanoantenna is arranged to exhibit at least two particle plasmon resonances or surface plasmon resonances (SPRs). The nanoantenna is for use in a sensor and allows detection at low concentration of biological components. In one aspect, the nanoantenna can have an asymmetric structural configuration and spectrally separated resonances. In one aspect, there is a location in its structure providing local electromagnetic field enhancement at all of the SPRs. The metal nanoantenna can be used for background free measuring of a quantity of a biological component.

Nanoantenna and uses thereof for biosensing

A metal nanoantenna for use in a biosensing device is described, the metal nanoantenna being arranged to exhibit at least two particle plasmon resonances or surface plasmon resonances (SPRs). The nanoantenna is for use in a sensor and allows detection at low concentration of biological components. To achieve this the nanoantenna can have an asymmetric structural configuration and spectrally separated resonances. Preferably there is a location in its structure providing local electromagnetic field enhancement at all of the SPRs. The metal nanoantenna can be used for background free measuring of a quantity of a biological component.

Optical illumination apparatus and method

An optical system for detecting light from a 2D area of a sample (36) comprises a collection lens (34) for collecting light from a collection region of the sample. A light detector (44) is positionally fixed with respect to the sample, and a reflector arrangement (61) directs collected light to the detector. The reflector arrangement comprises movable components and the collection lens (34) is movable relative to the sample. The collection lens and the movable components are configurable to define different collection regions, and the movement of the components effects a direction of the light from the collection region to a substantially unchanged area of the light detector (44). This arrangement avoids the need for a bulky detector in order to detect signals from a 2D sample area formed by scanning across the sample.

Polynomial-based key distribution system and method

The present invention relates to a system (600) and method for sharing multiple session keys between low-power devices (701) and more advanced devices (702). A polynomial algorithm with a certain number of parameters is used. A large number of parameters are fixed for the low-power devices (701) and a small number of parameters are fixed for the more powerful devices (702).

Method and apparatus for embedding an additional layer of error correction into an error correcting code

Document de sécurité comportant des images d'inclinaison d'authentification positive et négative

L'invention concerne un document de sécurité (1) comprenant une couche d'image (2) comportant, dans une première zone d'image (3), une image d'identification (4). Le document présente, dans une seconde zone d'image (5), une image d'authentification (6) qui est composée d'une première image d'authentification (7) qui est une version positive de la première image (4) et d'une seconde image d'authentification (8) qui est une version négative de la première image (4). Les images d'authentification (7, 8) peuvent être observées selon différents angles et former une image d'inclinaison. La comparaison réciproque des images d'inclinaison positive et négative et la comparaison avec l'image d'identification permettent de réaliser une détection améliorée de modifications non autorisées.

Interventional system

The invention relates to an interventional system comprising an introduction element (4) like a catheter for being introduced into an object (9), for instance, a person. A moving unit (2) like a robot moves the introduction element within the object, wherein a tracking image generating unit (3) generates tracking images of the introduction element within the object and wherein a controller (8) controls the tracking image generating unit depending on movement parameters of the moving unit, which are indicative of the movement, such that the tracking images show the introduction element. This control can be performed very accurately based on the known real physical movement of the introduction element such that it is not necessary to, for instance, irradiate a relatively large area of the object for ensuring that the introduction element is really captured by the tracking images, thereby allowing for a reduced radiation dose applied to the object.

Scanning microscope

A scanning microscope includes a stage for holding a sample, a scan mechanism, a probing system for probing a region of the sample, a position sensor, and a controller. The scan mechanism is configured to translate the stage between at least two axial positions. The probing system includes an optical element and a photosensor having a readout region, where the readout region extends in a direction which is transverse to an ideal orientation of the stage. The position sensor is configured to measure a transverse position of the stage and/or of an orientation of the stage. The controller is configured to adapt the probing system as a function of the measured transverse position and/or the measured orientation.

Dynamic privacy management for communications of clients in privacy-preserving groups

A server is configured to communicate with a group of clients over a network in one embodiment. The server maps the group of clients into a plurality of subgroups of bounded size, communicates to a given one of the clients information identifying the particular subgroup to which that client belongs as well as the other clients in that subgroup. The given client utilizes the communicated information to generate a ring signature over the corresponding subgroup of clients based on the communicated information. The subgroup size may be bounded to a minimum size and a maximum size in accordance with a variable privacy parameter. The server can increase or decrease the value of the parameter in order to provide respective increased or decreased privacy to the clients, by making it respectively more or less difficult to determine which client in a corresponding one of the subgroups produced the received ring signature.

Randomly skewing secret values as a countermeasure to compromise

A first cryptographic device is authenticated by a second cryptographic device. The second cryptographic device stores an alternative version of a secret value associated with the first cryptographic device as a countermeasure to compromise of the secret value. In conjunction with a protocol carried out between the first cryptographic device and the second cryptographic device, the second cryptographic device determines the secret value based at least in part on the alternative version of the secret value, and utilizes the determined secret value to authenticate the first cryptographic device. The alternative version of the secret value may comprise a randomly-skewed version of the secret value. For example, the secret value may comprise a key or other parameter of the first cryptographic device and the alternative version of the secret value may comprise a randomly-skewed version of the key or other parameter.

Methods and apparatus for silent alarm channels using one-time passcode authentication tokens

Methods and apparatus are provided for silent alarm channels using one-time passcode authentication tokens. A message is transmitted indicating a potential attack on a protected resource by obtaining the message; combining the message with a tokencode generated by a security token to generate a one-time passcode; and transmitting the one-time passcode to a receiver. A plurality of the messages can be obtained in parallel, and the plurality of parallel messages can be combined with the tokencode to generate the one-time passcode. A subsequent message can optionally be generated by applying a hash function to a prior n-bit value to provide a counter identifying each message. The message optionally also comprises one or more additional bits to provide an annotation of the message.

Scheduling of defensive security actions in information processing systems

A processing device is configured to identify a plurality of defensive security actions to be taken to address a persistent security threat to a system comprising information technology infrastructure, and to determine a schedule for performance of the defensive security actions based at least in part on a selected distribution derived from a game-theoretic model, such as a delayed exponential distribution or other type of modified exponential distribution. The system subject to the persistent security threat is configured to perform the defensive security actions in accordance with the schedule in order to deter the persistent security threat. The distribution may be selected so as to optimize defender benefit in the context of the game-theoretic model, where the game-theoretic model may comprise a stealthy takeover game in which attacker and defender entities can take actions at any time but cannot determine current game state without taking an action.