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Digital filtering method
A method of implementing a digital filter utilizes a fast and accurate reciprocal estimate function to generate and recharacterize the digital filter on the fly....
Wireless network circuits, systems, and methods for frequency hopping with
reduced packet interference
A method (10) for determining a frequency hopping sequence for a newly-entering network. The method comprises the step of scanning (16) a plurality of frequency...
SLM-base color projection display having multiple SLM's and multiple
An optical unit (20, 30) for color projection display system that has three SLMs (21, 31) and three projection lenses (27, 37). Each SLM (21, 31) receives light...
Color wheel for a falling raster scan
A dichroic spiral color wheel (108) having many spiral-shaped color filters (206). The boundary between adjacent color filters follows the spiral of Archimedes,...
Piecewise linear calibration method and circuit to correct transfer
function errors of digital to analog converters
A calibrated digital-to-analog converter (DAC) (15') has a main DAC (17) having a digital input and an analog output. An on-chip memory (21) stores measured INL...
ARC responsive thermal circuit breaker
A circuit breaker (10) has a current carrying bimetallic element (18) which bends upon self-heating and upon being subjected to a selected overload current...
Fast recovery time precision amplifier
An amplifier with a electrically controllable gain and enhanced protection against an overload condition is disclosed. The amplifier contains a buffer amplifier...
Operational amplifier input stage and method
A precision operational amplifier operating in single supply mode, including a single differential transistor input pair and a cascoded CMOS transistor pair,...
Trimming impedance between two nodes connected to a non-fixed voltage level
A T-network containing three impedances is provided between two terminating ends connected to a non-fixed voltage level. Two impedances are connected in series...
Voltage reference circuit with increased intrinsic accuracy
The invention relates to bandgap reference voltage generator circuit including a first bipolar transistor and a second bipolar transistor, a first resistor...
Broadband sample and hold circuit
A sample and hold device is provided in which sample switches are employed to switch between a sample phase and a hold phase. The sample and hold device provides...
METHOD OF GENERATING TRANSISTOR AC SCATTERING PARAMETERS SIMULTANEOUSLY
WITH DC CHARACTERISTICS USING A SINGLE...
A method of generating transistor scattering parameters employs a single circuit simulation with a self-correction scheme for the artificial DC voltage dropped...
Digital inductive position sensor
A differential pulse transformer having a drive coil (10a) and differential sense coils (10b) are disposed on a planar surface with a target (10e, 10f) movable...
DC-DC converter with a feedback controller
A DC-DC converter that does not need a series resistance element on the output side, and can make use of the parasitic resistance of a coil to improve output...
Low current substantially silicide fuse for integrated circuits
A fuse (50, 150, 200) with a low fusing current includes a first contact element (51, 151, 201) and a second contact element (51, 151, 201). A fusing element...
A microelectromechanical switch includes a substrate, an insulator layer disposed outwardly from the substrate, and an electrode disposed outwardly from the...
Assembly and method for improved scanning electron microscope analysis of
An assembly and method for improved scanning electron microscope analysis of semiconductor devices include a structure including a first layer and a second...
Time domain sensing technique and system architecture for image sensor
A photodiode sensor (25) has a photodiode (30) with an associated capacitance (34), which may be a parasitic capacitance of the photodiode (30). A switch (36) is...
Complementary transistors having respective gates formed from a metal and a
A method of forming a first and second transistor. The method provides a semiconductor surface (20). Th method also forms a gate dielectric (30) adjacent the...
Methods for chemical vapor deposition of tungsten on silicon or dielectric
In situ nitridation of a thin layer of either silicon or tungsten provides an adhesive layer for bulk deposition of tungsten. Alternatively, a thin layer of...
Method and system for measuring jitter
According to one embodiment of the present invention, a system (100) for measuring overall jitter is disclosed that includes a data converter (102) that measures...
Data communications system with splitterless operation
A data communication system that provides different types of service (e.g., telephone services and high-speed data transmission services) to a remote site even...
Memory cell operation using ramped wordlines
The standby power consumption of storage or memory cells is improved by ramping the wordline voltage down at a rate slow enough to allow the addressed storage...
A current limiting circuit to limit current including an input circuit to input an input voltage, a connecting circuit to connect the input voltage to a current,...
Packaged micromirror assembly with in-package mirror position passive
A packaged micromirror assembly (21, 21') is disclosed. The assembly (21, 21') includes a mirror element (41) having a mirror surface (29) that can rotate in two...
A circuit for removing a spurious component contained in the output signal in the locked state of a PLL circuit in a fractional frequency division system. For...
Residual offset correction method and circuit for chopper stabilized
An improved circuit and technique are provided that facilitate residual offset correction during chopper stabilization of an amplifier circuit. A chopper...
Current sensor with input/output isolation
A current sensor and a method for measuring currents on an integrated circuit in an isolated manner. The current sensor uses a Peltier device as a thermal...
Protection circuit for miller compensated voltage regulators
A capacitively compensated voltage regulator, adapted to be supplied with power from a voltage supply, and having an input port and an output port. The voltage...
Driver circuit for a voice coil motor in a disk drive system
The present invention provides an apparatus and system (300) supplying a regulated voltage of sufficient magnitude to enable de-latching of a head carriage from...
Control circuit employing preconditioned feedback amplifier for
initializing VCO operating frequency
A control circuit for a piezo transformer based power supply includes oscillator circuitry, drive circuitry, sense circuitry, and feedback circuitry collectively...
Compensated-well electrostatic discharge protection structure
Electrostatic discharge (ESD) protection structures utilizing bipolar conduction are disclosed. The structures each include a parasitic p-n-p bipolar transistor...
Ultra-thin SiO2using N2O as the oxidant
N.sub.2 O is used as the oxidant for forming an ultra-thin oxide (14). The low oxidation efficiency of N.sub.2 O compared to O.sub.2 allows the oxidation...
Method of fabricating a dynamic random access memory with increased
A method for forming a dynamic random access memory with increased capacitance includes preparing (36) ultra-fine particles in a microemulsion. The particles are...
High contrast projection
A method and system for improving the contrast ratio of a projected image. An asymmetric aperture stop within a lens is used to provide a 20-30% improvement in...
Transferring data between asynchronous devices
A digital system has a host processor 200 with a bus controller 210 and peripherals 220(0)-220(31) interconnected by an interconnect bus 230. 32 peripherals are...
Method and system for decoding a compressed data file
A data file having a plurality of frames is received, with each frame having a syncword located at a first predefined length from a known data value that is...
High-speed digital timing and gain gradient circuit employing a parallel
A system and a method for implementing a feedback control signal by employing parallel paths (105 and 106) for processing separate parts of the signal. The...
Automatic frequency control system with improved argument approximation
An argument approximation method is used to estimate the frequency offset for an automatic frequency control (AFC) circuit. An angle of rotation can be...
Increased bit rate of telephony modems using controlled intersymbol
The operation of a line card in the local exchange of a point-to-point switched telephone network is modified to increase the data rate of voiceband modem...
Pseudorandom noise generator for WCDMA
A circuit is designed with a plurality of logic circuits (370-374) for producing an offset state matrix. The circuit includes a first logic circuit (380-383)...
Decimated digital phase-locked loop for high-speed implementation
A phase lock loop to control phase error from a first input signal and a second input signal including a phase error detector to detect a phase error signal...
Fully differential current feedback amplifier
A current feedback amplifier is disclosed for providing a differential output based on a single-ended or differential input signal, having first and second low...
Sample and hold circuit
A sample and hold circuit includes an operational amplifier and a plurality of switched capacitors, the switched capacitors introducing a closed loop gain of...
System and method for detecting a negative supply fault
A negative supply, low-voltage supply fault detection circuit is implemented without the need for a current mirror thereby providing for the elimination of...
Quad state logic design methods, circuits, and systems
Quad-state logic elements and quad-state memory elements are used to reduce the wiring density of integrated circuits. The resulting reduction in wiring...
Method of testing for micro latch-up
A reliable method of testing a CMOS-based integrated circuit device having a low-impedance path between I/O pin(s) and GND for potential micro-latch-up. The test...
Probe card with contact apparatus and method of manufacture
A probe card having reliable "micro probe" contacts which include a base and an angled probe tip fabricated as a single unit from a thin sheet of a conductive...
High Q-large tuning range micro-electro mechanical system (MEMS) varactor
for broadband applications
A Micro Electro-Mechanical System (MEMS) varactor (100, 200) having a bottom electrode (116) formed over a substrate (112) and a dielectric material (130)...
An on-chip analog capacitor. Metal interconnect structures are used to form the capacitor, and the interdigitated fingers of like polarity within the ...