Abstract: Certain embodiments of the present invention involve a method of storing an erasure coded copy of block data, and storing newly updated block data into a separate erasure-coded log structure. The method also includes auditing both the erasure copy of block data and the newly updated block data. The erasure copy of block data and the newly updated block data are probabilistically checked during the audit. In certain other embodiments the newly updated block data is stored in a log structure.

Abstract: Certain embodiments of the present invention involve a method of storing an erasure coded copy of block data, and storing newly updated block data into a separate erasure-coded log structure. The method also includes auditing both the erasure copy of block data and the newly updated block data. The erasure copy of block data and the newly updated block data are probabilistically checked during the audit. In certain other embodiments the newly updated block data is stored in a log structure.

Abstract: Methods and systems of concealing access patterns to data storage, such as within servers of a cloud computing environment are presented. Server data storage is securely partitioned into smaller electronic data storage partitions of predetermined size. The client side maintains a shuffling buffer and position map for these blocks as stored on the electronic data storage partitions of the server. Concealment is performed with respect to accesses from the client to server using an oblivious sorting protocol. Access operation is concealed with each block being randomly assigned to any of the data storage partitions, and whenever a block is accessed, the block is logically removed from its current partition and logically assigned to a fresh random partition selected from all partitions, while the client maintains tracking of which partition each block is associated with at any point of time.

Abstract: The extreme optical shooting simulator is used for team military games and sport competitions and as a tactical training device. It consists of a simulation ‘gun’ and a personal target. Two emitters are mounted on the simulation ‘gun’: a narrow-beam emitter (1) in which a laser or non-laser light-emitting diode is installed as a source; and a wide-beam emitter (2) having a non-laser light-emitting diode installed therein. When a signal is received from the low-divergence emitter (1), a precise hit on the personal target is simulated by means of ‘ammunition’ mounted thereon for an acoustic pyro effect with smoke (3). If a signal is received from the high-divergence emitter (2), devices (4) for the acoustic simulation of flying bullets, a light-emitting diode display and mechanical vibration are activated. The purpose of the invention is to add an extreme hit effect and the effect of bullets flying past the player to optical ‘laser tag’-type shooting simulators.

Abstract: An interactive display recognition tool uses imaging devices to determine the location of a display and position an icon on the display via a computer. The tool comprises various input devices, which can be used to control the icon and interact with a computer driven multimedia platform.

Abstract: Methods and systems of concealing access patterns to data storage, such as within servers of a cloud computing environment are presented. Server data storage is securely partitioned into smaller electronic data storage partitions of predetermined size. The client side maintains a shuffling buffer and position map for these blocks as stored on the electronic data storage partitions of the server. Concealment is performed with respect to accesses from the client to server using an oblivious sorting protocol. Access operation is concealed with each block being randomly assigned to any of the data storage partitions, and whenever a block is accessed, the block is logically removed from its current partition and logically assigned to a fresh random partition selected from all partitions, while the client maintains tracking of which partition each block is associated with at any point of time.

Abstract: A handheld multimedia device connect to the internet to obtain internet content and transmits formatted content, including internet content, to a display, such as a television. Thus, users of the multimedia device have a platform for watching internet television or movies, listening to internet music, and otherwise experiencing internet content without the need to connect a conventional computer to the television. Moreover, in some embodiments, multimedia device allows for seamless interaction with the internet by using the devices as a pointing device—users point the device where they desire a cursor to be on the screen.

Abstract: The invention concerns a light unit with at least one LED, which includes at least one light-emitting chip as light source, with at least one fiber-optic element optically connected after the light-emitting diode and widening in the light propagation direction, and with a secondary lens optically connected after the fiber-optic element, in which oppositely arranged surfaces bordering the fiber-optic element, which form a bottom surface and a cover surface in a longitudinal section intersecting these surfaces, have oppositely curved curve sections adjacent to the light entry surface, as well as such a fiber-optic element. A light unit with high light output requiring limited space is developed with the present invention.

Abstract: The invention relates to a low beam headlight with at least one light module. The individual light module exhibits at least one light source and at least one primary lens connected downstream of the light source; and the light source is a luminescent diode. In addition, the low beam headlight has at least one secondary lens, which is connected optically downstream of the primary lens or the primary lenses. Both the primary and the secondary lens exhibit at least two lens segments, which are arranged one over the other. In addition, at least one lens segment of the primary lens and its assigned lens segment of the secondary lens lie outside the optical axis of the light module. The present invention develops a compact low beam headlight, whose light distribution has a clearly defined hot spot. The light intensity of the illumination decreases steadily in the direction of the basic distribution.

Abstract: An interactive display recognition tool uses imaging devices to determine the location of a display and position an icon on the display via a computer. The tool comprises various input devices, which can be used to control the icon and interact with a computer driven multimedia platform.

Abstract: A handheld multimedia device connect to the internet to obtain internet content and transmits formatted content, including internet content, to a display, such as a television. Thus, users of the multimedia device have a platform for watching internet television or movies, listening to internet music, and otherwise experiencing internet content without the need to connect a conventional computer to the television. Moreover, in some embodiments, multimedia device allows for seamless interaction with the internet by using the devices as a pointing device—users point the device where they desire a cursor to be on the screen.

Abstract: The invention relates to a low beam headlight with at least one light module. The individual light module exhibits at least one light source and at least one primary lens connected downstream of the light source; and the light source is a luminescent diode. In addition, the low beam headlight has at least one secondary lens, which is connected optically downstream of the primary lens or the primary lenses. Both the primary and the secondary lens exhibit at least two lens segments, which are arranged one over the other. In addition, at least one lens segment of the primary lens and its assigned lens segment of the secondary lens lie outside the optical axis of the light module. The present invention develops a compact low beam headlight, whose light distribution has a clearly defined hot spot. The light intensity of the illumination decreases steadily in the direction of the basic distribution.

Abstract: The invention concerns a light guide element whose cross-sectional surface widens continuously at least in areas from a light inlet surface to a light outlet surface, as well as a light unit with at least one LED as light source and with a light guide element. For this purpose the light guide element includes at least one area with a curved directrix, in which the curvature of the directrix in this area is constant or which the curvature of the directrix in this area diminishes with increasing cross section of the light guide element. With the present invention the light guide element and a light unit are developed, which permits a soft transition of illumination intensity in a sharply delimited light-dark boundary of the illuminated area on the other edges.

Abstract: The invention concerns a light guide element whose cross-sectional surface widens continuously at least in areas from a light inlet surface to a light outlet surface, as well as a light unit with at least one LED as light source and with a light guide element. For this purpose the light guide element includes at least one area with a curved directrix, in which the curvature of the directrix in this area is constant or which the curvature of the directrix in this area diminishes with increasing cross section of the light guide element. With the present invention the light guide element and a light unit are developed, which permits a soft transition of illumination intensity in a sharply delimited light-dark boundary of the illuminated area on the other edges.

Abstract: The invention relates to a lighting unit having at least one light source and at least one light guide following the source and at least partially surrounding it, said light guide including at least one light exit surface facing away from the source and at least approximately located centrally, surrounded by at least one externally located light exit surface. In addition, at least one externally located light exit surface comprises a plurality of surface elements adjacent to each other with or without offset. These surface elements are surface regions of curved solids. With the present invention, a compact lighting unit is developed that makes possible a uniformly high yield in a preassigned target region.

Abstract: A light guide assembly includes a base and a light source that are removably secured to the base. The light source is oriented to emit light out and away from the base. A light distributor is spaced apart from the light source and distributes the light across the light guide assembly. The light distributor includes a primary reflection surface with a plurality of transmission elements extending out from the primary reflection surface therealong to allow a portion of the light to pass through the transmission elements of the primary reflection surface without being reflected by the primary reflection surface. This facilitates the creation of a uniform beam of light being emitted by the light guide assembly.

Abstract: A light assembly disperses light emitted by a light source. The lighting assembly includes a light entry surface for receiving the light emitted by the light source. A direction surface directs the light in a predetermined direction. A stepped region, disposed adjacent the light entry surface receives the light directed by the direction surface and reflects the light. The stepped region includes a plurality of step parts, each defining a light deflection surface, wherein each of the light deflection surfaces is greater in area s step distance between the light deflection surface and the direction surface increases.

Abstract: The invention concerns a light unit with at least one LED, which includes at least one light-emitting chip as light source, with at least one fiber-optic element optically connected after the light-emitting diode and widening in the light propagation direction, and with a secondary lens optically connected after the fiber-optic element, in which oppositely arranged surfaces bordering the fiber-optic element, which form a bottom surface and a cover surface in a longitudinal section intersecting these surfaces, have oppositely curved curve sections adjacent to the light entry surface, as well as such a fiber-optic element. A light unit with high light output requiring limited space is developed with the present invention.

Abstract: The invention relates to a low beam headlight with at least one light module. The individual light module exhibits at least one light source and at least one primary lens connected downstream of the light source; and the light source is a luminescent diode. In addition, the low beam headlight has at least one secondary lens, which is connected optically downstream of the primary lens or the primary lenses. Both the primary and the secondary lens exhibit at least two lens segments, which are arranged one over the other. The present invention develops a compact low beam headlight, whose light distribution exhibits a uniform basic distribution and a clearly defined cut-off.

Abstract: An LED device (90) includes: an epitaxial structure (100) having a plurality of layers of semiconductor material and forming an active light-generating region (120) which generates light in response to electrical power being supplied to the LED device (90); and, a substrate (200) that is substantially transparent in a wavelength range corresponding to the light generated by the active light-generating region (120). The substrate has first and second opposing end faces (202, 206) and a plurality of side walls (210) extending therebetween, including a first side wall having a first portion thereof that defines a first surface (212, 214, 216, 218) which is not substantially normal to the first face (202) of the substrate (200). The epitaxial structure (100) is disposed on the first face (202) of the substrate (200).