Abstract: An electric insulation device, including a chamber and an electrically insulating element formed by a cast polymer solidified into an elastic state inside the chamber. The electrically insulating element includes a plurality of particles of a ceramic that has a higher thermal conductivity than the one of the polymer.

Abstract: An electric insulation arrangement including a field grading material including a matrix including a dielectric material. A plurality of micro varistor particles is distributed in the matrix. A plurality of bridge particles include an electrically conducting material and form electrically conducting bridges between individual micro varistor particles. The bridge particles form a percolating network together with the micro particles but do not form a percolating network by interconnection between themselves.

Abstract: The invention relates to header compression in packet-based communication systems. A mechanism that allows a compressor to reject a request for an undesirable mode change is proposed. The compressor indicates to the decompressor that the mode change request is being ignored, whereafter the decompressor may abort the initiated mode transition, with the understanding that the compressor has valid reasons to refuse it. The compressor preferably determines whether the rejection succeeded by link monitoring, and in case of a successful rejection, the compressor remains in its current mode. A preferred embodiment performs explicit rejection signaling through a mode change rejection message with a redefined mode value. The rejection signaling of the invention makes it possible for a compressor to disable the transition to a particular mode and enables implementations with only a subset of all modes.

Abstract: A technique for compressing header information to produce a compressed header portion of a data packet to be transmitted across a communication channel includes generating a checksum from the header information, and providing the checksum as the compressed header portion.

Abstract: Described is an apparatus for suppressing spurious spectral lines in a frame based bit-serial data stream, in which frames include payload data and frame markers. The apparatus includes means (16) for randomizing first frame marker elements (START) in a first position within each frame and means (18) for correlating second frame marker elements (STOP) in a second position within each frame with the randomized first frame marker element.

Abstract: An A/D converter stage including an A/D sub-converter connected to a D/A sub-converter (12) is calibrated by a method that inserts a calibration test sequence into the D/A sub-converter. This is accomplished by forcing (SW) the comparators (COMP1-COMP7) of the A/D sub-converter to generate and insert the sequence into the D/A sub-converter.

Abstract: A header compression method which uses a secure reference principle over channels that can reordering packets between a compressor and a decompressor without the risk of generating erroneously decompressed packets. The method adapting —the robustness properties of said secure reference principle—and, the characteristics of said reordering.

Abstract: In a system for transmitting packets over a link between a compressor and a decompressor, a method is provided for implicit packet type identification. A set of implicit packet transmission characteristics including at least first and second characteristics is selected, and the compressor is operated to assign the first and second transmission characteristics to packets of first and second packet types, respectively. The decompressor is operated to detect transmission characteristics of packets received by the decompressor, and to thereby identify a received packet as being either a first or second packet type. Usefully, header free packets comprise one of the packet types.

Abstract: The present invention concerns a waterborne copolymer dispersion comprising at least one alkenyl functional dendritic polymer being copolymerized to the polymer backbone of at least one homo or copolymer obtainable by polymerization, such as emulsion polymerization, in an aqueous medium of at least one at least one polymerizable allyl, vinyl, maleic or diene monomer. The dendritic polymer is built up from a dendritic core polymer and at least one alkenyl functional compound bonded to the core polymer. In a further aspect the present invention concerns the use of said copolymer dispersion.

Abstract: Systems and methods are provided for Internet Protocol (IP) based communication systems without using a complete Internet Protocol stack on both sides of a communication link. Various exemplary embodiments include communication of audio information over a wireless transmission channel to a wireless terminal from a network that includes transmission of audio information using voice over Internet Protocol (VoIP). A first communication system and method may include a wireless terminal having a dedicated audio application that includes processing for header compression and decompression. A second communication system and method may include a wireless terminal and a network device (e.g., a network transmitter/receiver terminal), each containing at least a portion of an Internet Protocol stack, and the network device may include a header modification means that may reduce or eliminate the header from VoIP packets it will send to the wireless terminal.

Abstract: Provided is a new binder composition comprising a pH controlling agent and polymer dispersion. The binder provides antimicrobial properties to various kinds of materials, including those used in antibacterial packing material, hygiene and health care products. The binder composition also show satisfactory bonding properties, when the binder is applied on fibrous materials. Finally, the binder is easily applied, eg., through dipping, coating or spraying methods, onto the relevant surfaces or areas.

Abstract: A network node (60), upon receiving a request (62, 92) indicating that the remote unit (40) seeks access to a multicast/broadcast multimedia service, generates the trigger signal (64) which is applied to the compressor (25) to trigger a lowest compression state of the header compression logic. The trigger signal is generated external to the header compression logic, and prior to generation of an initial packet of the media flow (34) by a multimedia server (21). As both a distinct and combinable aspect, the network node (60) can also generate the trigger signal (64) to trigger a transition to the lowest compression state of the header compression logic upon receipt of an indication of a decompression problem which has occurred at the remote unit (40). The decompression problem can be, for example, a compression initialization failure or compression static context damage.

Abstract: A unit (25, 46) performs a compression operation or a decompression operation with respect to information for transmission in packets over a wireless link (36). The transmission over the wireless link is such that the packets may become reordered from a transmission sequence. The compression operation and the decompression operation involve a tradeoff of robustness and reordering depth. The robustness is an indicator of a degree of information loss over the link tolerated by the compression operation and the decompression operation; the reordering depth is a degree of packet reordering tolerated by the compression operation and the decompression operation. The unit dynamically adjusts the tradeoff of the robustness and the reordering depth in accordance with characteristics of the link. In an example embodiment, the information upon which the compression operation and the decompression operation is performed is sequence number information of a packet header.

Abstract: Disclosed is a method for production of a waterborne copolymer dispersion wherein the yielded copolymer comprises monomer units derived from at least one polymerisable super hydrophobic monomer having a lower water solubility. The copolymer dispersion is obtained in an emulsion polymerization performed in an aqueous media and in the presence of at least one dendritic polymer.

Abstract: The present invention concerns a waterborne copolymer dispersion comprising at least one alkenyl functional dendritic polymer being copolymerised to the polymer backbone of at least one homo or copolymer obtainable by polymerisation, such as emulsion polymerisation, in an aqueous medium of at least one at least one polymerisable allyl, vinyl, maleic or diene monomer. The dendritic polymer is built up from a dendritic core polymer and at least one alkenyl functional compound bonded to the core polymer. In a further aspect the present invention concerns the use of said copolymer dispersion.

Abstract: In packet communications that utilize header compression/decompression, relatively fast and reliable header compression context updates can be accomplished with relatively low overhead by: sending anticipatory context update requests before decompressor context invalidation is detected; sending redundant context update requests; and sending redundant context updates. Transmission parameters associated with both context update requests and context updates can be controlled appropriately to improve their chances for delivery, and needless context update requests can be identified and ignored at the header compression side.

Abstract: A telecommunications system comprises a source base station (BSS), a destination base station (BSD) having a synchronization searcher (s), and a synchronization start position determination unit (101) which establishes a start position (SP) of a synchronization search window for the synchronization searcher of the destination station. The synchronization search window detects, for synchronization purposes, a transmission of the specified mobile station received at the destination base station during a handover of a connection involving the specified mobile station from the source station to the destination base station. In accordance with an aspect, the synchronization start position determination unit establishes the start position of the synchronization search window with reference to a calculated distance of the mobile station from the destination base station.

Abstract: The present inventions relates to a system for communication of data information, e.g. multimedia content, over a wireless network connecting a plurality of end user stations and supporting broadcast/multicast transmission. It comprises central server means with at least one central cache arrangement for storing at least selected parts of data information relevant for at least a segment of the wireless network, transmission scheduling means for transmission scheduling, central cache arrangement control means for, by using scheduling information, controlling a central cache arrangement push engine for multicast/broadcast pushing of information to end user stations within said at least one segment of the wireless network.

Abstract: In packet communications that employ header compression/decompression, the computational complexity of checksum generation can be reduced by re-using static checksum information associated with header bits that do not change from header to header. The static checksum information can be used together with information about header bits that do change from header to header, in order to generate a desired checksum. The checksum can then be used to verify a reconstructed header produced from a compressed header by a header decompressor.

Abstract: An A/D converter stage including an A/D sub-converter connected to a D/A sub-converter provides dynamic element matching. This is accomplished by forcing comparators of the A/D sub-converter to generate a scrambled thermometer code.