Assignee: Harris Corp.

Location: Melbourne, FL
No. of patents: 52

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Number	Title	Issue Date
5970343	Fabrication of conductivity enhanced MOS-gated semiconductor devices In the manufacture of an MOS gated semiconductor device, indentations are provided on a surface of a semiconductor wafer extending inwardly of respective spaced apart regions at the wafer surface having doping concentrations greater than that present in t...	10/19/1999
5812658	Method and circuit for failsafe switch-hook detection during fault in a telephone system A circuit and method for maintaining switch-hook detection (SHD) in the presence of a fault in a telephone system may include a comparison of one of a tip current and a ring current to a reference current. A switch-hook detection indicates that a request ...	09/22/1998
5668397	High frequency analog transistors, method of fabrication and circuit implementation A fabrication process for dielectrically isolated high frequency complementary analog bipolar and CMOS transistors. Polysilicon extrinsic bases, polysilicon emitters with sidewall spacers formed after intrinsic base formation provides high current gain, l...	09/16/1997
5636274	Switch controller and method A circuit and method for reducing power consumption during operation of a solid state switch that controls connection of a source of alternating current to a load includes a circuit for determining a voltage across the switch. The switch is operated upon ...	06/03/1997
5633815	Formatter A digital down converter with a programmable mixing down frequency and a programmable extraction bandwidth uses a Read Only Memory, ROM, based sin/cos generator plus a programmable high decimation filter followed by a gain compensating scaling multiplier ...	05/27/1997
5627526	Proximity detection using DPSK waveform A method and system for determining whether a transmitting unit is proximate a receiving unit wherein the transmitting unit includes a magnetic field generator for a providing a plurality of time-sequential magnetic fields, each of the sequences being a d...	05/06/1997
5627489	Level shifter with improved rejection of voltage variations A level shifter for shifting a digital signal input voltage to a digital signal output voltage and for rejecting voltage variations in the level shifter that would cause the level shifter to shift in error. The level shifter includes a trigger for trigger...	05/06/1997
5617344	Fixed coefficient high decimation filter A digital down converter with a programmable mixing down frequency and a programmable extraction bandwidth uses a ROM based sin/cos generator plus a programmable high decimation filter followed by a gain compensating scaling multiplier and a fixed FIR fil...	04/01/1997
5614867	Current follower with zero input impedance A semiconductor current follower and method using a copy of the input current from a current mirror to insure that the input impedance remains a virtual ground for both unidirectional and bidirectional signals....	03/25/1997
5614852	Wide common mode range comparator and method A transconductance amplifier suitable for the input stage of a comparator with the capability of amplifying input signal with common mode voltage components in a range including the entirety of its operating voltage. Operation at one voltage extreme is ac...	03/25/1997
5613051	Remote image exploitation display system and method A system and method for storing image data in a location remote from a display device which uses the data. The system uses plural reduced resolution image data sets and geographical coordination between the image being viewed and the data sets to substant...	03/18/1997
5612778	Fiber optic sensor for multiple variables An optical device and method for sensing a plurality of ambient conditions (e.g., temperature and pressure) may include transmission of an optical flux through a fiber optic cable to a section of the cable that is placed where the ambient conditions are t...	03/18/1997
5528660	Display-based control mechanism resident in portable test and communications device for facilitating craftsperson's remote testing of selected portion of telephone network A portable, digital processor-based system equips a craftsperson with the ability to test a subscriber line of a telephone network by accessing a direct test unit (DATU) of a telephone office, said DATU being configured to respond to commands from a telep...	06/18/1996
5260590	Field effect transistor controlled thyristor having improved turn-on characteristics A composite thyristor comprising a plurality of parallel connected identical thyristor cells, each of the cells including a turn-on field effect transistor (FET) and a turn-off FET. The gate electrodes of all the FETs form a grid-like pattern on a surface...	11/09/1993
5181207	Error correction mechanism using pattern predictive error correction codes A mechanism for correcting errors in a stream of digital data that are encoded at a transmitter site, transmitted over a communication channel to a receiver site and decoded at the receiver site to recover the digital data pre-encodes the data using a par...	01/19/1993
5150120	Multiplexed sigma-delta A/D converter A sigma-delta analog-to-digital converter employs multiplexed single-loop modulators in parallel and respectively phased time-divided clocks. The parallel modulators have the effect of producing digital output at a high sampling frequency that is a multip...	09/22/1992
5104211	Splined radial panel solar concentrator A splined radial panel solar collector structure approximates compound curvature surfaces by a three-dimensional arrangement of compactly stowable flat reflective panel segments mounted on a collapsible, space-deployable support structure of linear compon...	04/14/1992
4897582	Linear dc motor vibration controller A linear force actuator system for stabilizing a support structure employs a linear dc motor whose primary winding is driven by a pulse width modulation control signal representative of a force input, through which the secondary member of the motor which ...	01/30/1990
4859000	Adaptive air brake control system An adaptive brake control system monitors a plurality of brake pipe/air line parameters, such as fluid path volume and air flow rate, and controllably modifies action taken by the engineman or performs emergency control of the brakes, in order to continuo...	08/22/1989
4855625	Operational amplifier having low DC current input circuit An input circuit for an operational amplifier which incorporates a bias control transistor for effectively minimizing the input current to a Darlington-connected transistor pair into the same semiconductor region in which the Darlington-connected transist...	08/08/1989
4849804	Fabrication of integrated circuits incorporating in-process avoidance of circuit-killer particles In the manufacture of an integrated circuit, steps of the process are dynamically augmented, so as to fabricate the integrated circuit at wafer locations which avoid the presence of circuit-killing particulates. During the respective steps of fabrication,...	07/18/1989
4845511	Space deployable domed solar concentrator with foldable panels and hinge therefor A space deployable solar energy concentrator is formed of a dome-shaped arrangement of compactly stowable flat panel segments mounted on a collapsible, space-deployable support structure of interconnected linear components. The support structure is compri...	07/04/1989
4843615	CPFSK communication system employing nyquist-filtered modulator/demodulator An improved narrowband continuous phase modulation system incorporates a filtering mechanism in the transmitter and receiver sites that enables the radiated spectrum characteristic to have a substantially reduced response at frequencies other than the cha...	06/27/1989
4841560	Direct access test unit for central office A direct access test unit for enabling a craftsperson at a telephone facility remote with respect to a central office to test subscriber lines comprises a first access port coupled to an access line circuit, by way of which the remote telephone facility c...	06/20/1989
4839847	N-clock, n-bit-serial multiplier A bit-serial multiplier has a multi-stage input data register and a multi-tiered tree of multiplexer/adder circuits coupled thereto which produces, at the output of the adder at the top tier of the tree, successive bit serial digital output codes represen...	06/13/1989
4835008	Process of forming breadboard interconnect structure having plated through-holes A process for forming an interconnect structure atop an insulated circuit board comprises selectively forming a first metallic (copper) layer on a first surface of an insulator (Teflon) board, so as to define the intended geometry of a pattern of intercon...	05/30/1989
4829359	CMOS device having reduced spacing between N and P channel The separation constraint between the respective junctions formed between the drain regions of the complementary transistors and the semiconductor material in which they are formed is obviated by a structure which permits the respective drain regions of t...	05/09/1989
4829304	Map-aided navigation system employing TERCOM-SITAN signal processing A navigation system contains a modified Kalman filter processor which continuously receives both TERCOM and SITAN control information so that the operation of the SITAN processing is effectively continuously optimized. The system employs an over flight te...	05/09/1989
4823134	Shipboard antenna pointing and alignment system A mechanism for correcting for time-varying errors that affect the pointing accuracy of a shipboard mounted antenna employs a Kalman filter for realizing an optimal correction estimator through which inputs to the antenna aiming control hardware are adjus...	04/18/1989
4823295	High speed signal processor A high speed signal processor contains a set of repetitive architecture functional units including an input data storage unit for storing quantized data values, a data shifting unit, an output data accumulator and a control code generator. The data shifti...	04/18/1989
4823228	RF harmonic monitor for detecting potential lightning strikes by induced corona An apparatus for detecting the onset of a potential lightning discharge condition monitors the odd harmonics of an RF signal radiated from a conductive probe (antenna) for fluctuations that are representative of an electrostatic condition-induced corona. ...	04/18/1989
4818725	Technique for forming planarized gate structure A direct moat wafer processing for maximizing the functional continuity of a field oxide layer employs a processing sequence through which respective differently sized apertures are successively formed in the oxide layer. A first of these apertures prescr...	04/04/1989
4814285	Method for forming planarized interconnect level using selective deposition and ion implantation On the surface of a semiconductor structure containing portions to be selectively connected to an interconnection pattern, a thin conductive, uniform base layer, which promotes the growth of an interconnect conductor, is desposited. To define the intercon...	03/21/1989
4812854	Mesh-configured rf antenna formed of knit graphite fibers An antenna reflector material for electromagnetic waves is comprised of knitted strands of fine diameter graphite filaments, which have been individually coated with a stress absorbing layer (e.g. a thin metallic or dielectric cladding). Because of the st...	03/14/1989
4812962	Area feature sorting mechanism for neighborhood-based proximity correction in lithography processing of integrated circuit patterns Proximity correction of an area feature in lithography processing of an integrated circuit device is facilitated by a procedure for locating those area features which lie within a prescribed proximity correction neighborhood of an area feature of interest...	03/14/1989
4806888	Monolithic vector modulator/complex weight using all-pass network A complex weighting device contains parallel all-pass networks selectively feeding a pair of differential amplifiers, so as to produce a set of mutually orthogonal vector outputs. These outputs are coupled to an attenuator network comprised of dual gate f...	02/21/1989
4804970	Equiphase refractive antenna lens A dielectric antenna lens for planar wavefront/focal point conversion is configured of a series of concentric rings, each of which is contoured from a rear face to inclined termination edges that are delimited by the functional performance of the lens and...	02/14/1989
4802149	Acousto-optic two-dimensional coherent optical modulator Outputs of a linear phased array antenna can be employed for emitter field sorting, i.e., providing an indication of the frequency and angle of arrival of signals from a plurality of radiation sources, through the use of a two-dimensional optical processo...	01/31/1989
4797685	Offset shaped antenna reflector An antenna fabrication scheme for shaped reflector analyzes the geometry of the shaped reflector to be fabricated. On the basis of this analysis, a surface of revolution which closely approximates the shaped reflector is defined. The axis of revolution of...	01/10/1989
4795922	Amplitude and phase discriminator using all-pass networks An amplitude/phase discriminator network the entirety of which is integrated on the same (GaAs) semiconductor chip, obtains a quadrature phase split through the use of a pair of orthogonal phase generators each of which comprises an all-pass network coupl...	01/03/1989

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Assignee: Harris Corp.