Patents by Inventor Boris Skoric
Boris Skoric 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).
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Publication number: 20080260152Abstract: The present invention relates to a method and a device (104) for authenticating a plurality of physical tokens (101, 102, 103). A basic idea of the invention is to supply a sequence of interconnected devices (108, 109, 110), each device comprising a physical token (101, 102, 103), with a challenge of the respective physical token created during enrollment of said respective physical token, wherein the sequence of interconnected devices is arranged such that a data set supplied to the sequence is cryptographically processed with a response of a token comprised in a device and passed on to a token comprised in a subsequent device which further cryptographically processes the processed data set with its response until a response of a final physical token has been used to further cryptographically process the data set.Type: ApplicationFiled: November 27, 2006Publication date: October 23, 2008Applicant: Koninklijke Philips Elecetronics, N.V.Inventors: Boris Skoric, Alphons Antonius Maria Lambertus Bruekers, Pim Theo Tuyls, Willem Gerard Ophey
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Patent number: 7432485Abstract: An optical arrangement of at least a coherent light source (1), a strongly scattering object (5) (the PUF), and a pixe-lated photo-detector (6), wherein the pixels are comparable in size with the bright and dark patches of the speckle pattern produced by coherent radiation traversing the scattering object (5). Quantitively, the pixel size should be roughly ?/NA, where ? is the wave-length, and (i) NA=a/z for free-space geometry, with a being the beam radius and z being the distance between the exit surface of the PUF (5) and the pixelated detector (6), or (ii) NA is the numerical aperture of a lens (7) in an imaging geometry. In a preferred embodiment of the invention, there are tentative requirements that the pixels should be at least smaller than ?max?NA and preferably larger than ?max?/NA, where (in an exemplary embodiment) ?max=5 and ?min=0.05, say.Type: GrantFiled: November 24, 2004Date of Patent: October 7, 2008Assignee: Koninklijke Philips Electronics N.V.Inventors: Sjoerd Stallinga, Boris Skoric, Pim Theo Tuyls, Willem Gerard Ophey, Antonius Hermanus Maria Akkermans
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Publication number: 20080237506Abstract: In a device for providing challenge-response pairs a radiation detection element, a challenge-modifying element and preferably also a light source are arranged on the same side of an imaginary plane, which separates said radiation-detecting element from a radiation scattering element. Hence, generation of a speckle pattern having a desired minimum speckle size is facilitated and a more easily assembled device is provided.Type: ApplicationFiled: October 11, 2006Publication date: October 2, 2008Applicant: Koninklijke Philips Electronics, N.V.Inventors: Willem Gerard Ophey, Boris Skoric, Pim Theo Tuyls
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Publication number: 20080231418Abstract: The present invention relates to a device (100, 200, 300) and a method for creating challenge-response pairs. A basic idea of the present invention is to create a challenge in the form of light emitted onto a light scattering element (103, 203), which light will be scattered in the light scattering element and detected as a response to the challenge by light detecting elements (105, 205). The light scattering element comprises a transmissive material which contains randomly distributed light scattering particles (104, 204), which scatter incident light such that a random speckle pattern is created and spread over the light detecting elements. This random pattern is detected by the light detecting elements, and is known as the response to the challenge (i.e. the light) that was supplied to the light scattering element. Hence, a challenge-response pair is created.Type: ApplicationFiled: October 2, 2006Publication date: September 25, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Willem Gerard Ophey, Boris Skoric, Pim Theo Tuyls, Antonius Hermanus Maria Akkermans
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Publication number: 20080229119Abstract: The present invention relates to a method of enabling authentication of an information carrier (105), the information carrier (105) comprising a writeable part (155) and a physical token (125) arranged to supply a response upon receiving a challenge, the method comprising the following steps; applying a first challenge (165) to the physical token (125) resulting in a first response (170), and detecting the first response (170) of the physical token (125) resulting in a detected first response data (175), the method being characterized in that it further comprises the following steps; forming a first authentication data (180) based on information derived from the detected first response data (175), signing the first authentication data (180), and writing the signed authentication data (185) in the writeable part (155) of the information carrier (105).Type: ApplicationFiled: August 16, 2006Publication date: September 18, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Boris Skoric, Pim Theo Tuyls, Antonius Hermanus Maria Akkermans, Willem Gerard Ophey
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Publication number: 20080199011Abstract: A transponder (1) comprises at least one memory (MEM1, MEM2) for storing encrypted information (E_k(EPC, PI)) that has been encrypted by use of a key (k) and for storing the key (k) associated with the encrypted information (E_k(EPC, PI)). The transponder (1) is adapted to send the key (k) slower response than the encrypted information (E_k(EPC, PI)) in response to queries of a reading device (2), which is preferably done by delaying the transmission of the key (k) or by limiting the response rate at which the key (k) is transmitted. In particular the invention is related to RFID systems.Type: ApplicationFiled: June 14, 2006Publication date: August 21, 2008Applicant: NXP B.V.Inventors: Pim Theo Tuyls, Geert Jan Schrijen, Stefan Maubach, Boris Skoric, Antoon Marie Henrie Tombeur
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Publication number: 20080141364Abstract: This invention relates to the use 100 of a challenge-response pair 104, 108 for calibrating a device 101 for authenticating 200 a physical token (102) 102.Type: ApplicationFiled: January 24, 2006Publication date: June 12, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Boris Skoric, Pim Theo Tuyls, Antonius Hermanus Maria Akkermans, Willem Gerard Ophey, Sjoerd Stallinga
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Publication number: 20070199075Abstract: A method of generating an authorization status list, comprising generating a run-length encoded representation of an authorization status of a number of devices and storing the representation in the authorization status list. Preferably comprises generating the representation by indicating, for each of a number of ranges of devices, the devices in a particular range having a same authorization status, the number of devices in each of said ranges, together with for each of said ranges the authorization status shared by the devices in each of said ranges. A range may then be omitted if it is of a predetermined length.Type: ApplicationFiled: March 2, 2005Publication date: August 23, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Boris Skoric, Antonius Staring, Johan Talstra
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Publication number: 20070174898Abstract: This invention relates to an authentication method for authenticating a first party to a second party, where an operation is performed on condition that the authentication succeeds. If the first party is not authenticated, then if the first party qualifies for a subauthorization, the operation is still performed. Further, a device that comprises a first memory area holding a comparison measure, which is associated with time, and which is also used in said authentication procedure, a second memory area holding a limited list of other parties which have been involved in an authentication procedure with the device, and a third memory area, holding compliance certificates concerning parties of said list.Type: ApplicationFiled: May 30, 2005Publication date: July 26, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Maurice Jerome Maes, Boris Skoric, Antonius Staring, Johan Talstra
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Publication number: 20070125857Abstract: The invention relates to an information carrier containing a non-clonable optical identifier (2) having an optical scattering medium (3) for being challenged by a light beam (5) and for scattering said light beam (5). In order to provide a secure information carrier (1), it is proposed that it further comprises a light absorbing means (3, 4) for reducing the intensity of said light beam (5) so that an integration time for obtaining a response signal by integrating the scattered light beam (8) is extended.Type: ApplicationFiled: November 3, 2004Publication date: June 7, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Pim Tuyls, Boris Skoric, Sjoerd Stallinga, Willem Ophey, Antonius Hermanus Akkermans, Petra De Jongh
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Publication number: 20070090312Abstract: An optical arrangement of at least a coherent light source (1), a strongly scattering object (5) (the PUF), and a pixe-lated photo-detector (6), wherein the pixels are comparable in size with the bright and dark patches of the speckle pattern produced by coherent radiation traversing the scattering object (5). Quantitively, the pixel size should be roughly ?/NA, where ? is the wave-length, and (i) NA=a/z for free-space geometry, with a being the beam radius and z being the distance between the exit surface of the PUF (5) and the pixelated detector (6), or (ii) NA is the numerical aperture of a lens (7) in an imaging geometry. In a preferred embodiment of the invention, there are tentative requirements that the pixels should be at least smaller than ?max?NA and preferably larger than ?max?/NA, where (in an exemplary embodiment) ?max=5 and ?min=0.05, say.Type: ApplicationFiled: November 24, 2004Publication date: April 26, 2007Inventors: Sjoerd Stallinga, Boris Skoric, Pim Tuyls, Willem Ophey, Antonius Akkermans
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Publication number: 20060277415Abstract: The present invention relates to a content protection method and system as well as to a reproduction method and device providing copy protection of electronic content. In order to provide protection against illicit copying by consumers as well as by authoring and formatting facilities content-dependent encryption of the content is proposed. In an encryption step the content (C0) is encrypted using an application key (AK) and/or a disc key (DK). Further, a content-dependent content mark (AK?, H, MAC) is generated using said content (C0), which content mark is to be evaluated during decryption of said encrypted content (C2).Type: ApplicationFiled: August 27, 2004Publication date: December 7, 2006Inventors: Antonius Staring, Johan Talstra, Boris Skoric, Maurice Jerome Baptiste Maes
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Publication number: 20060239462Abstract: The present invention relates to a record carrier (10) for storing user data in sectors (S) and management information (n) associated with said sectors. In order to provide a simple, low-cost, flexible and secure copy protection of the user data when being transmitted over a communication bus (6) of a PC it is proposed according to the present invention that the management information comprises an encryption indication information (M1) indicating that the user data stored in the associated sector (S) are to be encrypted by a read-out device (2) before being transmitted over a communication bus (6).Type: ApplicationFiled: July 28, 2004Publication date: October 26, 2006Inventors: Antonius Staring, Boris Skoric, Menno Treffers, Maurice Jerome Maes
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Publication number: 20060114421Abstract: The invention relates to a method of providing images on a screen and to an image projection device. The image projection device (10) comprises at least one first set (12) of light-emitting units provided in an array including at least two lines of light-emitting units having at least two light-emitting units each, and a light-displacing unit (36) arranged to displace the light from each light-emitting unit before projection on a screen (16), such that each light-emitting unit provides a tile comprising a line including at least two pixels aligned in one direction on the screen. The light-emitting units are preferably LEDs, and in this way, an efficient display or projector that can be accommodated in a reasonably small space is provided.Type: ApplicationFiled: November 27, 2003Publication date: June 1, 2006Applicant: Koninklijke Philips Electronics N.V.Inventors: Anthonie Bergman, Frank Van Abeelen, Ramon Van Gorkom, Albericus Hoevenaars, Boris Skoric, Nijs Van Der Vaart
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Publication number: 20050174031Abstract: A picture display device comprises a cathode ray tube (1) with an elongated display screen (8) and a deflection system (9) for deflecting electron beams. The display screen is substantially rectangular with a long and a short axis. The line scanning direction is parallel to the long axis of the display screen. The cathode ray tube comprises a neck portion and between the screen and the neck portion a cone portion (3, 3a). This cone portion has an aspect ratio (ratio of x and y dimension, x/y ratio), which is near the neck below unity and changes to above unity closer to the screen as a function of z.Type: ApplicationFiled: May 22, 2003Publication date: August 11, 2005Applicant: Koninklijke Philips Electronics N.V.Inventor: Boris Skoric
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Patent number: 6720725Abstract: A picture display device comprising a cathode ray tube (1) with an elongated display screen (8) and a deflection system (9) is described. The deflection power is reduced by two means. The deflection system (9) is arranged to scan the lines in the direction of the short axis (22) of the display screen (8), and the cone portion (3) of the cathode ray tube (1) has an elongated cross-section (54) whose aspect ratio is larger than or equal to the aspect ratio of the display screen (8), thereby enabling the deflection system (9), and in particular the line deflection subsystem (12), to be positioned closer to the electron beam envelope (51), which reduces magnetic losses.Type: GrantFiled: November 27, 2001Date of Patent: April 13, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Marteijn De Jong, Marcellinus Petrus Carolus Michael Krijn, Pim Theo Tuyls, Boris Skoric, Michel Cornelis Josephus Marie Vissenberg
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Publication number: 20030052625Abstract: The invention comprises a cathode ray tube having a line coil (15) for deflecting an electron beam (6,7,8) in a horizontal direction and a frame coil (13)′ for deflecting the electron beam in vertical direction. The line coil (15) comprises two line coil halves (17,19) that are operated with currents IN, IS, respectively, which are a function of the position of the deflected beam. This substantially reduces energy dissipation of the line coil (15). In an advantageous embodiment the tube further comprises a quadrupole coil (14) for correction of an asymmetry in the line magnetic field caused by the asymmetric driving of the line coil (15).Type: ApplicationFiled: September 13, 2002Publication date: March 20, 2003Inventors: Dirk Willem Harberts, Boris Skoric, Marcellinus Petrus Carolus Michael Krijn
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Publication number: 20020063508Abstract: A picture display device comprising a cathode ray tube (1) with an elongated display screen (8) and a deflection system (9) is described. The deflection power is reduced by two means. The deflection system (9) is arranged to scan the lines in the direction of the short axis (22) of the display screen (8), and the cone portion (3) of the cathode ray tube (1) has an elongated cross-section (54) whose aspect ratio is larger than or equal to the aspect ratio of the display screen (8), thereby enabling the deflection system (9), and in particular the line deflection subsystem (12), to be positioned closer to the electron beam envelope (51), which reduces magnetic losses.Type: ApplicationFiled: November 27, 2001Publication date: May 30, 2002Applicant: KONINKLIJKE PHILIPS ELECTRONIC N.V.Inventors: Marteijn De Jong, Marcellinus Petrus Carolus Michael Krijn, Pim Theo Tuyls, Boris Skoric, Michel Cornelis Josephus Marie Vissenberg