Abstract:
Systems and methods for determining turbine engine system stability encompass measuring or otherwise determining values of performance parameters, storing a data set of such values in memory, generating a stability indicator, and displaying the stability indicator on an operator interface. The stability indicator is generated by a processor operating in data communication with the computer memory, utilizing customized software algorithms to remove high frequency components, apply an adaptive filter to adjust selected parameters according to a target value of a selected target parameter, and apply a stochastic filters to estimate true values of the selected parameters, based on the remaining variation.
Abstract:
A control and distribution system provides electrical power distribution, audio signal distribution, and control signal distribution to one or more audio components, such as a powered loudspeaker element or a signal conditioning device such as a rack-mounted amplifier. Embodiments allow for the monitoring and/or control of parameters and/or components at or near the endpoint of the system. These parameters or components include low-level parameters associated with the external audio devices, as opposed to merely higher level parameters of the system. The control and distribution system may include an uninterrupted power source for providing power in an online or offline mode to selected components of the external audio devices. In some embodiments, online backup power is provided to low-power components without providing power to amplifiers within the external audio devices.
Abstract:
A method for identifying and recording the relative positions of loudspeakers in an array with respect to one another using amplifiers connected on a network.
Abstract:
A programmable processor and method for improving the performance of processors by expanding at least two source operands, or a source and a result operand, to a width greater than the width of either the general purpose register or the data path width. The present invention provides operands which are substantially larger than the data path width of the processor by using the contents of a general purpose register to specify a memory address at which a plurality of data path widths of data can be read or written, as well as the size and shape of the operand. In addition, several instructions and apparatus for implementing these instructions are described which obtain performance advantages if the operands are not limited to the width and accessible number of general purpose registers.
Abstract:
A system for processing geometry which reduces the amount of memory spaces while improving the processing speed. The system delivers vertices in sequence to a vertex queue (70) so that data in the vertex queue is freed as it is delivered and only minimal intermediate results are stored. By this incremental evaluation, less memory space is needed. In another aspect of the invention the vertices are maintained in the proper sequence so that sorting operation can be eliminated. A sorted vertex queue (70) and an unsorted vertex list (72) are utilized so that resorting of the entire vertex list may be prevented. In addition, a compressed format (34) for storing geometry is utilized based on the fact that much information can be rederived from a sorted and reduced vertex queue.
Abstract:
A compact FIR filter uses one or both of a compact address sequencer and a compact multiplier/accumulator. The address sequencer exploits certain symmetry properties existing between different phases of a polyphase FIR filter in order to reduce coefficient storage and simplify address sequencing. The multiplier/accumulator is capable of performing two multiply/accumulate operations per clock cycle, avoiding in certain instances the need to add a second multiplier/accumulator. The area required to realize an FIR filter for performing real-time filter is therefore reduced.
Abstract:
A direct digital synthesizer (DDS) for generating a waveform generates a sequence of n-bit phase signals representing phase of the waveform, wherein n is an integer greater than zero. Each n-bit phase signal comprises a phase estimate signal and a phase error signal. The phase estimate signal comprises a most-significant m bits of the n-bit quantity (0
Abstract:
A two-stage flash analog-to-digital signal converter is described. The first stage has a voltage divider network and a set of amplifiers that perform an initial interpolation. The initial interpolation results are directly coupled, i.e., no resistive or capacitive elements, to a second stage comprising a set of comparators having multiple inputs. The multiple inputs of the second stage comparators are weightily coupled to the first stage amplifiers in a manner so as to cause the second stage comparators to generate a digital representation of the analog signal.
Abstract:
A method of printing a sub-resolution device feature (16) having first and second edges spaced in close proximity to one another on a semiconductor substrate (20) includes the steps of first depositing a radiation-sensitive material on the substrate, then providing a first mask image segment (11) which corresponds to the first edge. The first mask image segment is then exposed with radiation (10) using an imaging tool (12) to produce a first pattern edge gradient (14). The first pattern edge gradient defines the first edge of the feature in the material. A second mask image segment (13) is then provided corresponding to the second feature edge. This second mask image segment is exposed to radiation (10) to produce a second pattern edge gradient (17) which defines the second edge of the feature. Once the radiation-sensitive material has been developed, the two-dimensional feature is reproduced on the substrate.
Abstract:
A bipolar transistor having an emitter (25), a base (31), and a collector (30) includes an intrinsic base (33) region having narrow side areas (p-) and a wider central area (37). The side areas are located adjacent to the extrinsic base region (31), while the central area (37) is disposed underneath the emitter (25). The lateral doping profile of the base is tailored so that the doping concentrations in the extrinsic region (31) and the central area (37) are relatively high compared to the doping concentration of the narrow side areas (p-) of the intrinsic base (33). The combination of the narrow side areas (p-) and the lateral base doping profile constrains the depletion region within the base thereby lowering punch-through voltage of the transistor without loss of beta.