Abstract: In a communications system a transmitter is arranged to transmit asynchronous transfer mode (ATM) cells in which synchronous transfer mode (STM) channels are assembled. In order to minimise the bandwidth required at lease some of the ATM cells include one or more switch command(s) (12) that indicate a change in the activation state of one or more STM channels (11-0 to 11-n). The switch commands (12) and STM channels (11) fill the ATM cell from opposite ends of the cell. Activate switch commands comprise two bytes, a high byte including a pointer (18) pointing to the start of a block of STM channels (11) and a low byte that includes a pointer (19) that points to the channel within a block of STM channels (11) to which the switch command applies.

Abstract: A wireless communications system in which an access point (AP) transmits a downlink signal for reception by one or more subscriber unit(s) (SU) and the subscriber unit (SU) transmits an uplink signal for reception by the access point (AP). The downlink signal from the access point (AP) carries syncronisation bursts (2) at predetermined times and data contained in frames interleaved between the synchronisation bursts. Each synchronisation burst comprises an offset pointer (4) to the start of the subsequent downlink frame.

Abstract: A fixed wireless access communications system comprises an access point and a plurality of subscriber units. Each subscriber unit (502) contends for access to a communications channel to the access point by transmitting a contention word to the access point during a contention time slot. The contention word is predistorted to compensate for the channel impulse response of the transmission channel so that the access point can decode the contention words without using equalisation. A control unit (512), which may comprise a microprocessor, loads the predistorted contention word (a) into a memory (520) and causes the stored predistorted contention word (a) to be applied to a transmitter (508) during a contention time slot when the subscriber unit (502) wishes to request a transmission channel to transmit data to the access point.

Abstract: A dynamic channel allocation method and system for use in a wireless network operates by monitoring at least the allocated channel allocated to a particular network node to generate one or more channel metrics relating to radio conditions on the channel. The metrics generated are Received signal power, signal to noise ratio of transmissions on the network and long-term mean square of the equaliser error used in each terminal. The generated metrics are communicated back to the cell access point or the network control server over a signalling channel, and a new frequency is allocated to the cell if it is determined from the metrics that the presently allocated channel is suffering interference. The signalling channel is preferably an ATM VPI/VCI pair, such that signalling messages are transmitted as ATM cells which can be communicated across the wireless channel using the sane signalling frame as is used for payload cells.

Abstract: Systems for powering vehicles using compressed air and vehicles involving such systems are provided. In this regard, a representative system includes: a power source configured to power an air compression system, the air compression system comprising at least one air compressing piston; a compressed air storage system, comprising at least two storage tanks configured to store compressed air from the air compression system; a valve configured to control release of air from the compressed air storage system into a rotor system; the rotor system comprising a first air jet configured to direct the released air into a plurality of paddles located about a circumference of at least one rotor, thereby turning the at least one rotor.

Abstract: Methods, systems, structures and arrays are disclosed, such as a resistive memory array which includes access devices, for example, back-to-back Zener diodes, that only allow current to pass through a coupled resistive memory cell when a voltage drop applied to the access device is greater than a critical voltage. The array may be biased to reduce standby currents and improve delay times between programming and read operations.

Abstract: A communications system operator provides to each user of a multi-user communications system a committed information rate (CIR). When a user requests bandwidth for transmission, a system controller queues the user in a high-priority subclass A. The system controller allocates bandwidth to the user at the head of the queue as requested but if the user's bandwidth, measured as an average over a sampling time, exceeds its CIR, it is moved into a low-priority subclass B. The user can then only obtain further bandwidth after other users in the high-priority subclass have been allocated bandwidth up to their CIRs. If a user in the low-priority subclass only receives allocation of a small amount of bandwidth, so that its average inforamtion rate falls below its CIR, it is moved back in to the queue in the high-priority subclass.

Abstract: A pet grooming tool comprises a pet engageable portion formed of polymeric material and having a plurality of teeth. A method of forming a pet grooming tool comprises molding a pet engageable portion out of a first polymeric material and thereafter over-molding a handle portion to the pet engageable portion.

Abstract: The present invention relates to novel analine derivatives and their use in therapy, in particular their use in the treatment of fungal infections.

Abstract: A pet grooming tool comprises a pet engageable portion formed of polymeric material and having a plurality of teeth. A method of forming a pet grooming tool comprises molding a pet engageable portion out of a first polymeric material and thereafter over molding a handle portion to the pet engageable portion.

Abstract: A packet switched communications network comprises a controller (11) and a plurality of controlled units (12, 13, 14) arranged in a ring. Each of the controlled units comprises a switch (31) at its input, each switch including control means (44) that are responsive to control instructions transmitted by the controller (11). Depending on the instructions the switch (33) will either be configured to pass control instructions and data into or out of the controlled unit (12, 13, 14), or to forward the control instructions and data to a further controlled unit (12, 13, 14) that is connected to the controller (11) or back to the controller (11). In order for units in the ring, that are not registered with the controller (11), to acquire an address, the controller (11) transmits periodically broadcast packets, which contain a unique registration address to be used by an unregistered unit. Once registered, the unit can receive control instructions from the controller (11) as well as data.

Abstract: A temperature sensor device and method of sensing temperature are disclosed. The device and method include generating a reference voltage inversely correlated to the temperature, generating a plurality of analysis voltages correlated to the temperature using a reference current, comparing the reference voltage to each of the plurality of analysis voltages, and generating a temperature estimate based on the comparison. The device and method may also include a method to selectively bypass various resistors in a resistor stack used to generate the various analysis voltages. Another embodiment of the present invention comprises a semiconductor device including at least one temperature sensor according to the invention described herein. The temperature sensor and method of sensing temperature may be incorporated into a semiconductor device, which may be fabricated on a semiconductor wafer and included in an electronic system.

Abstract: Described are film(s) and/or sheet(s) made using polyester compositions comprising polyesters containing (a) a dicarboxylic acid component having from about 70 to 100 mole % of terephthalic acid residues, and up to about 30 mole % of aromatic dicarboxylic acid or aliphatic dicarboxylic acid residues; and (b) a glycol component comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and 1,4-cyclohexanedimethanol.

Abstract: In a method and magnetic resonance apparatus for acquisition of image data for a magnetic resonance image, the image data are acquired with an acquisition sequence, in which a k-space matrix corresponding to the image data is scanned in segments with at least two partial acquisitions and in which each of the partial acquisition includes a navigator signal in addition to the measurement signal with which a specific k-space segment is scanned, with which navigator signal a same navigator segment of the k-space matrix is scanned. In one of the partial acquisitions a measure is determined that characterizes the breadth of the distribution of signal values of the navigator signal with regard to the k-space matrix and the partial acquisition is repeated if and when the measure lies outside of a tolerance range.

Abstract: A pet grooming tool, for use with a furry pet such as a dog or cat having loose hair and non-loose hair, is adapted for removing the loose hair from the pet. The grooming tool comprises an handle portion and a pet engageable portion secured to the handle portion. The pet engageable portion includes a blade portion and a plurality of teeth. The blade portion includes a blade edge. The teeth extend from the blade edge. The blade edge is adapted to engage the loose hair of the pet and pull it from the pet without cutting or pulling the non-loose hair from the pet.

Abstract: A filter assembly for treating a compressed gas stream comprises a container which comprises a body and a cap which are sealingly joined to one another at an interface. The body and cap each have a port through which compressed gas can flow. The body contains a quantity of adsorbent material so that gas flowing through the container from one of the ports to the other port flows through the adsorbent material, and a plate located between the adsorbent material and the interface to hold the adsorbent material in place within the body. The cap includes a particle removal filter through which compressed gas passing through the port in the cap will pass, and a skirt which extends into the body to maintain a separation between the plate and the particle removal filter.

Abstract: Described are polyester compositions comprising at least one polyester which comprises terephthalic acid residues, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and cyclohexanedimethanol, wherein the inherent viscosity and the Tg of the polyester provides for certain polyester properties. The polyesters may be manufactured into articles such as fibers, films, bottles or sheets.

Abstract: Described are polyesters containing (a) a dicarboxylic acid component having from 70 to 100 mole % of terephthalic acid residues, and up to 30 mole% of aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues; and (b) a glycol component having from 40 to 65 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, and from 35 to 60 mole % of cyclohexanedimethanol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %. The polyesters may be manufactured into articles such as fibers, films, containers, bottles or sheets.