Abstract: A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code and are received over the shared spectrum. The received signals are sampled and the samples are delayed to produce a window. A weighted value for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted according to a weight corresponding to its respective pilot code sample.

Abstract: An inline predistortion circuit for producing composite second order (CSO) and composite triple beat (CTB) distortion correction of a laser transmitter is disclosed having an RF input signal, a diode for producing nonlinear current, and a DC voltage bias for controlling the nonlinear current. The predistortion circuit lacks DC blocking capacitors between the RF attenuator and the diode, which results in improved nonlinear current generation across a wide frequency range. A capacitor in parallel with the bias circuit further increases diode's capability for producing nonlinear current. A low resistance resistor in series with the RF signal path and in parallel with the diode provides the voltage necessary for the diode to conduct while minimizing RF signal attenuation. An inductor in series with the RF signal provides improved phase correction of the CSO and CTB predistortion circuit.

Abstract: An image manipulating system according to the present invention includes a file generator which assigns a file name for information to be recorded so that the information is formatted as a file for storage in a recording medium. The file generator automatically assigns the file name which has a part thereof which is a serial number stored and managed in the recording medium and associated with the file. The file generator increments the last stored file number and stores it in readiness for use to identify the next file to be created. The file generator also creates characters forming an arbitrary position of the file name. The file generator also provides a character which identifies the image manipulating system with the file number.

Abstract: A liquid crystal display, especially relative to a liquid crystal display utilizing the BBVA technique, is provided. The liquid crystal display has a first substrate having a first electrode thereon, a second substrate having a second electrode having at least a hole, a liquid crystal layer located between the first substrate and the second substrate, a third electrode located between the second electrode and the second substrate and a fourth electrode located on the third electrode. The third electrode is located corresponding to the hole of the second electrode, and the fourth electrode has at least a portion located inside the hole of the second electrode.

Abstract: A single transmitter transmits K communication bursts in a shared spectrum in a time slot of a time division duplex communication system. The system associated with N midamble sequences. Each burst has an associated midamble sequence. A receiver receives a vector corresponding to the transmitted midamble sequences of the K communication bursts. A matrix having N identical right circulant matrix blocks is constructed based in part on the known N midamble sequences. The wireless channel between the transmitter and receiver is estimated based on in part one of the N blocks and the received vector.

Abstract: A UE system implements dynamic link adaptation by adding or changing control information to notify a receiver which timeslots and codes are currently active and which timeslots should be avoided. The UE provides synchronization such that the receiver knows which timeslots and codes the UE has used to map the coded composite transport channel onto physical channels. The UE attempts to avoid the timeslots which are experiencing transmission difficulties, while attempting to utilize the timeslots which are not experiencing transmission problems.

Abstract: An optical storage system includes a pickup head for picking up data from a storage medium. Firstly, the maxima of a tracking error signal and runout are obtained in a calibration procedure in a close loop formed by an optical pickup head, a pre-amplifier, a compensator, a band-pass filter and a maximum detector. A calibration factor is then defined and derived by using the obtained maxima and nominal factors of a power amplifier and the optical pickup head of the optical storage system. The path formed by the series-connected band-pass filter and maximum detector is then disabled, while the calculated calibration factor is then stored in the compensator. The optical storage system may operate in a close loop formed by the optical pick head, pre-amplifier, compensator, a power amplifier under a normal operation procedure so that the optical storage system may record or read data onto/from an optical disc under the compensation provided by the calibration factor.

Abstract: A method and system for rapidly acquiring a spreading code, used in a code division multiple access (CDMA) system. A first long code and a second long code, with each long code having a length of N chips, are generated. The first long code is different from the second long code. The first long code and the second long code are transmitted at a first phase angle and at a second phase angle, respectively, on a carrier signal, over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle, respectively, on the carrier signal. From the communications channel, an I-phase acquisition circuit and a Q-phase acquisition circuit may acquire, in parallel, the first long code and the second long code from the I-phase angle and the Q-phase angle, respectively, of the carrier signal by searching, in parallel, N/2 chips, the first long code and the second long code.

Abstract: A device for electrically adjusting the relative rotation of two shafts, particularly a camshaft (15) in relation to a crankshaft of an internal combustion engine is provided. The adjusting device includes an adjusting gear system which is embodied as a triple-shaft gear mechanism and is provided with a crankshaft-fixed input part, a camshaft-fixed output part, and an adjusting shaft (13) that is connected in a torsion-proof manner to an electric adjusting motor shaft (32) of an electric adjusting motor (3). The adjusting motor (3) is configured as a brushless DC motor having a housing-fixed stator (35) and a permanent magnet rotor (34). A high degree of adjustment accuracy and adjustment speed are provided with minimal space requirements and low power consumption.

Abstract: A base station has a plurality of transmitting antennas. From each transmitting antenna, a reference signal having a code uniquely associated with that antenna is transmitted. A data signal is transmitted such that different spread spectrum versions of the data signal are transmitted from each antenna. Each version has a different code for the respective transmitting antenna.

Abstract: The present invention provides a current distribution circuit for parallel power supplies, wherein the power supplies includes at least a first power supply and a second power supply. The current distribution circuit includes a voltage amplifier, a power converting unit, a current detecting unit, an equivalent diode, a regulable amplifier, an adding unit and a soft-start circuit.

Abstract: An improvement for a method and system for tracking a spreading code, used in a code division multiple access (CDMA) system. An input signal has spread-spectrum modulation. The spreading code embedded in the spread-spectrum modulation has a plurality of chips. The input signal is sampled, and half-chip offset samples are formed from the sampled input signal. An even set of the half-chip offset samples are grouped into an early set of samples, and an odd set of the half-chip offset samples are grouped into a late set of samples. Each early set of samples is multiplied by the spreading code c(n+1), c(n+2), . . . , c(n+L), to generate a first plurality of products. L is approximately equal to the number of chips of delay between the earliest and latest multipath signals. A first plurality of sums and magnitudes are computed from the first plurality of products. The first plurality of magnitudes are summed to generate an early signal-energy value.

Abstract: An improved mounting device to secure a front panel in perpendicular relationship onto a side panel comprises of a mounting bracket (18) secured to the front panel (12) and a receiving bracket (20) assembly secured to the side panel (14) said front and side panel (12,14) forming part of a furniture. The improvements further includes the mounting bracket (18) with a nose edge (32) removeably secured onto the receiving bracket assembly (20), the receiving bracket assembly (20) comprises of a holding block (60) to receive in registration the nose edge (32), a slider (70) to securely hold the mounting bracket (18) and to allow linear movement of the mounting bracket (18) within the receiving bracket (20), a rotatably mounted actuator plate (80), a biased means pivotally mounted to tension the actuator plate (80) and wherein by adjusting the actuator plate (80) and an eccentric cam mechanism means (110) the front panel (12) can be adjusted in two perpendicular axes in relation to the side panels (14).

Abstract: The method and the device thereof for dynamically calibrating a frequency is provided. The method includes steps of: (a) providing a first system frequency; (b) obtaining a first parameter of timer counting number; (c) providing a second system frequency; (d) obtaining a second parameter of timer counting number if there is a frequency drift between said first system frequency and said second system frequency; (e) obtaining a third parameter of timer interrupt interval by comparing said first parameter of timer counting number with said second parameter of timer counting number; and (f) calibrating a frequency output according to said third parameter of timer interrupt interval.

Abstract: A well configuration and method of increasing production from a hydrocarbon well having pre-existing production tube. A composite velocity string having an outer diameter smaller than the inner diameter of the production tube is installed in the production tube so that an annular gap is formed between the outer surface of the velocity string and the inner surface of the production tube. Production from the well is increased because the coefficient of fluid flow friction through the composite velocity string, and the amount of heat loss through the composite velocity string, are reduced compared to a steel velocity string. Installation efficiency is also increased because the composite velocity string is much lighter than a steel velocity string.

Abstract: A system and method reduces the time required by a base station to acquire a fixed subscriber unit in a CDMA communication system by virtually locating of the subscriber units. A base station acquires subscriber units by searching only those code phases concomitant with the largest propagation delay possible in the cell, as if all subscriber units were located at the periphery of the cell. A subscriber unit which has never been acquired by the base station varies the delay between the PN code phase of its received and transmitted signals over the range of possible delays in a cell and slowly ramps-up its transmission power until it is acquired by the base station. Upon initial acquisition by the base station, the subscriber unit ceases ramping-up its transmission power, ceases varying the delay and internally stores the final value of the delay in memory.

Abstract: A ring oscillator produces an in-phase and quadrature phase radio frequency signal. A first mixer mixes the in-phase signal with a received signal. A second mixer mixes the quadrature phase signal with the received signal. A combiner, operatively coupled to the first and second mixers, produces an image cancelled signal.

Abstract: The present invention provides a thin film type multi-layered ceramic capacitor including a stacked body composed of a plurality of capacitor layers. Each of the capacitor layers comprises a substrate having an upper surface where a plurality of holes are formed and a flat lower surface, and a thin film capacitor on the upper surface of the substrate. The thin film capacitor includes a lower electrode film, a dielectric film, and an upper electrode film. The lower electrode film, the dielectric film, and the upper electrode film are formed in sequence on the upper surface of the substrate. The lower and the upper electrode films extend to one side and the other side of the substrate and contact first and second external electrodes, respectively.

Abstract: A master-slave current distribution circuit for parallel power supplies is disclosed. The master-slave current distribution circuit for parallel power supplies comprising at least a first power supply and a second power supply includes a voltage amplifier, a power converting unit, a current detecting unit, an equivalent diode, an adjustable amplifier, an adding unit, and an energy gap voltage modulating unit, wherein an energy gap voltage formed between the output of the current detecting unit and the non-inverting input of the adjustable amplifier is modulated by the energy gap voltage modulating unit so that an unstability formed from the first power supply and the second power supply under a light load is eliminated.

Abstract: The differential comparator circuit for receiving an input voltage within a pre-determined range, amplifying the input voltage, and outputting an output voltage is provided. The circuit includes: a first differential comparator for receiving the input voltage within a first range portion of the range, amplifying the input voltage within the first range portion, and outputting the output voltage, a detecting circuit electrically connected to the first differential comparator, wherein a trigger signal is produced by the detecting circuit when the first differential comparator is shut down and is detected by the detecting circuit, and a second differential comparator electrically connected to the detecting circuit for receiving the input voltage within a second range portion of the range, amplifying the input voltage within the second range portion, and outputting the output voltage in response to the trigger signal.