Abstract: In the invention described, magnetic field characteristics of randomly placed magnetized particles are exploited by using the magnetic field fluctuations produced by the particles as measured by a sensor. The magnetized particles generate a complex magnetic field near the surface of an integrated circuit chip on a bank card or identification card that can be used as a “fingerprint.” The positioning and orientation of the magnetized particles is an uncontrolled process, and thus the interaction between the sensor and the particles is complex. The randomness of the magnetic field magnitude and direction near the surface of the material containing the magnetic particles can be used to obtain a unique identifier for an item such as an integrated circuit chip on a bank card or identification card carrying the PUF.

Abstract: In the invention described, magnetic field characteristics of randomly placed magnetized particles are exploited by using the magnetic field fluctuations produced by the particles as measured by a sensor. The magnetized particles generate a complex magnetic field near the surface of an integrated circuit chip on a bank card or identification card that can be used as a “fingerprint.” The positioning and orientation of the magnetized particles is an uncontrolled process, and thus the interaction between the sensor and the particles is complex. The randomness of the magnetic field magnitude and direction near the surface of the material containing the magnetic particles can be used to obtain a unique identifier for an item such as an integrated circuit chip on a bank card or identification card carrying the PUF.

Abstract: Embodiments of the present invention provide systems and methods for developing policies which govern entities and applying the developed policies against representations of entities, where the representations are contained in a repository. One embodiment of a method of the present invention includes obtaining a policy comprising a rule, wherein the rule comprises a condition associated with compliance to the rule, generating one or more filters according to the condition, applying the one or more filters to a plurality of representations in a repository, wherein each representation represents an entity and determining a set of entities compliant with the rule based on the application of the one or more filters to the plurality of representations.

Abstract: Embodiments of the invention relate to a printing system and method in which a printer is controlled by an external personal computer (PC). In an embodiment, a method of printing comprises the acts of (a) receiving compressed tiles from a personal computer, the compressed tiles representing rectangles of data of a target page to be printed by a printer; (b) storing the received tiles in a memory as at least one band; (c) by a direct memory access (DMA) controller, providing the at least one stored band to a mechanism control unit; and (d) receiving, from the personal computer, memory and mechanism control information for the printer.

Abstract: Laser beam scan line nonlinearity is compensated for by providing algorithms for generating linearity profiles which are used by a corresponding registration system in an electrophotographic device to determine the placement of Pels across a scan line.

Abstract: Systems and methods are provided for electronically adjusting an image to compensate for laser beam process direction position errors in an electrophotographic device. Initially, a bow profile is defined that characterizes the process direction position errors of a laser beam across a scan line. The device subsequently reads an image to be printed from a first memory location, performs pixel shifts on select columns thereof based upon the bow profile, and temporarily stores the adjusted image data to a second location of memory. The adjusted image data is then communicated to a printhead of the device.