Abstract: The invention relates to a carousel that is supported by a rotary plate controlled by a control mechanism (20). The mechanism (20) comprises: means for restraining said rotary plate (10) which are controlled in two states, a restrained state and a released state, said means being suitable for providing, in said restrained state, a rotational restraint of said rotary plate (10), and for allowing, in said released state, a free rotation of said rotary plate (10), and a device (36) for controlling said restraint means that is suitable for driving, on command, said restraint means into said released state, said restraint means being in the restrained state by default.

Abstract: The invention relates to a carousel that is supported by a rotary plate controlled by a control mechanism (20). The mechanism (20) comprises: means for restraining said rotary plate (10) which are controlled in two states, a restrained state and a released state, said means being suitable for providing, in said restrained state, a rotational restraint of said rotary plate (10), and for allowing, in said released state, a free rotation of said rotary plate (10), and a device (36) for controlling said restraint means that is suitable for driving, on command, said restraint means into said released state, said restraint means being in the restrained state by default.

Abstract: A wireless transceiver including an oscillator, a radio, a baseband processor and MAC device that performs apiori frequency offset correction. The radio converts between RF signals and baseband signals. The baseband processor includes a frequency correction loop, an inverter and a combiner. The frequency correction loop generates a frequency offset signal based on a frequency difference between an oscillator reference frequency and frequency of a received signal. The inverter inverts the frequency offset signal and the combiner adjusts frequency of a transmit signal by the inverted frequency offset signal. The MAC processes received packets, identifies packets received from an AP, provides packets to the baseband processor for transmission, and controls the baseband processor to adjust transmit signals to a frequency of the AP. The baseband processor may include a memory or filter to store or update frequency offset values.

Abstract: A system and method for changing a travel itinerary include receiving a request to make a change to a first travel itinerary that includes at least one segment, displaying an identification of one or more alternative segments, receiving a user selection of one of the alternative segments, modifying the first itinerary to include a reservation for the selected alternative segment, and releasing the segment of the first itinerary to be replaced by the selected alternative segments. The system and method may also include calculating a fare difference between the one or more alternative segments and the original segment to be replaced.

Abstract: The invention provides transition metal oxide mesophase compositions that include a sulfur-containing anionic surfactant and processes for preparing them. The processes involve conversion of a transition metal oxide precursor to a transition metal oxide mesophase in the presence of a sulfur-containing anionic surfactant templating agent, under conditions effective for formation of a transition metal oxide mesophase composition that includes the surfactant. The invention further provides processes for replacing at least part of the surfactant in such a transition metal oxide mesophase composition with anions. The anions may be anions of one or more oxyacids, thereby producing a transition metal oxide mesophase composition that includes a first transition metal oxide and a lesser amount of a second transition metal oxide dispersed on the first metal oxide.

Abstract: An FEC scheme for wireless receivers including a symbol detector, a symbol selector, CRC logic and output logic. The detector correlates each digital group of the packet with a symbol family and provides possible symbols and corresponding correlation factors. The selector selects several possible symbols for each digital group having the highest correlation factors. The CRC logic calculates possible CRC values for the packet using combinations of the selected symbols. The output logic evaluates the possible CRC values to determine whether there is a correct symbol combination. The system may include logic that determines a symbol quality (SQ) metric for each digital group based on a difference between the two highest correlation factors. The system may include a rank value filter that selects a predetermined number of second choice symbols based on the SQ metrics. The CRC logic calculates the CRC values using combinations of first and second choice symbols.

Abstract: A wireless transceiver including an oscillator, a radio, a baseband processor and MAC device that performs apiori frequency offset correction. The radio converts between RF signals and baseband signals. The baseband processor includes a frequency correction loop, an inverter and a combiner. The frequency correction loop generates a frequency offset signal based on a frequency difference between an oscillator reference frequency and frequency of a received signal. The inverter inverts the frequency offset signal and the combiner adjusts frequency of a transmit signal by the inverted frequency offset signal. The MAC processes received packets, identifies packets received from an AP, provides packets to the baseband processor for transmission, and controls the baseband processor to adjust transmit signals to a frequency of the AP. The baseband processor may include a memory or filter to store or update frequency offset values.

Abstract: A digital data radio receiver and method evaluates a data signal preamble received on an antenna to determine whether the antenna should receive the data signal following the preamble. The receiver determines frequency offsets from a desired frequency for each symbol in a block of symbols in the preamble, determines the variance of the frequency offsets, determines the average magnitude of the symbols in the block of symbols, where the determination of average magnitude may be performed in parallel with the determination of variance of the frequency offsets, and evaluates the variance and the average magnitude for the block of symbols to determine whether the preamble is actually noise and to assess reception quality at the antenna. In a two antenna diversity receiver system, these steps may be performed first on a block of symbols received at one antenna and then performed on the next block of symbols received at another antenna.

Abstract: A method of estimating signal quality in a radio demodulator receiving an input stream of symbols includes the steps of sampling a phase-only portion of each of the symbols in the input stream, determining a phase error for each of the samples of the phase-only portions, and calculating a signal quality estimate from a plurality of the sample phase errors. The signal quality estimate may be an average magnitude of a predetermined number of sample phase errors. The input stream may be symbols in the preamble, or symbols in the data signal that follows.

Abstract: In a direct sequence spread spectrum receiver, an apparatus for obtaining and adjusting bit synchronization. In one aspect, the bit synchronization is adjusted by selectively inverting a clocking circuit to delay sampling by one-half a clock cycle and to combine the inversion with a skipping of one cycle to advance the sampling by one-half cycle. In another aspect of the invention, the synchronization circuit avoids overflow of accumulating components by downshifting both the partial sums and the input data when needed.

Abstract: An earthmoving bucket for use with various types of wheel and track-type earthworking and construction machines is constructed to provide great strength and rigidity while at the same time not being unduly bulky or heavy. The bucket is further characterized by simplified manufacturability and cost advantages. Previous earthmoving buckets, which required considerable strength and durability, were quite heavy and bulky, with respect to bucket size, and required complicated, costly, and time-consuming assembly procedures. The earthmoving bucket of the present invention utilizes a pair of unitary cast lift hinge brackets which incorporates the pin bores for the lift linkage, the rack-back stops, and the bucket dump stops.

Abstract: A spread spectrum radio transceiver includes a high data rate baseband processor and a radio circuit connected thereto. The baseband processor preferably includes a modulator for spread spectrum phase shift keying (PSK) modulating information for transmission via the radio circuit. The modulator may include at least one modified Walsh code function encoder for encoding information according to a modified Walsh code for substantially reducing an average DC signal component to thereby enhance overall system performance when AC-coupling the received signal through at least one analog-to-digital converter to the demodulator. The demodulator is for spread spectrum PSK demodulating information received from the radio circuit. The modulator and demodulator are each preferably operable in one of a bi-phase PSK (BPSK) mode at a first data rate and a quadrature PSK (QPSK) mode at a second data rate. These formats may also be switched on-the-fly in the demodulator. Method aspects are also disclosed.