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| Number | Title | Issue Date |
| 4731846 | Voice messaging system with pitch tracking based on adaptively filtered LPC residual signal A voice messaging system, wherein linear predictive coding (LPC) parameters, pitch, and preferably other excitation information is derived from a human voice input, encoded, and transmitted and/or stored, to be called up later to provide a speech output w... | 03/15/1988 |
| 4731861 | Method of optical character recognition A method for scanning a page and locating individual characters on that page so that character recognition can be performed is disclosed. A page containing characters to be read is scanned with successive scan lines from top to bottom and the data contain... | 03/15/1988 |
| 4729739 | Connector for a chip carrier unit A connector for mounting and electrically connecting a chip carrier unit in an electrical circuit has a plurality of electrical contacts secured in openings in the bottom of an electrically insulating body to permit cantilever spring deflection of the con... | 03/08/1988 |
| 4730268 | Distributed bus arbitration for a multiprocessor system A computer system has a plurality of processors sharing a bus. Bus arbitration circuitry is located on each processor for determining bus access. The identity of the processor which is responsible for arbitrating bus access changes from time to time. Each... | 03/08/1988 |
| 4729003 | Configuration of a metal insulator semiconductor with a processor based gate A method for fabricating a metal insulator semiconductor includes first forming a substrate (10) having an array of switching elements formed therein. A plurality of deformable Indium pads (16) and (18) are then formed on the surface of the substrate and ... | 03/01/1988 |
| 4729009 | Gate dielectric including undoped amorphous silicon A dual dielectric gate system utilizes a dual dielectric system with a first silicon dioxide dielectric film or layer at the monocrystalline substrate surface, or termination. The substrate is of silicon optionally counterdoped with germanium. The dual di... | 03/01/1988 |
| 4728958 | Coherent electromagnetic energy emitter locator An emitter location system includes a single carrier based first and second short baseline interferometers, and a long baseline interferometer operatively connected to a computing means. The computing means includes a three level processor. The short base... | 03/01/1988 |
| 4728185 | Imaging system Optical systems for imaging activated pixels of a linear cantilever beam light valve (14) on a receptor or screen (24) are disclosed. The systems include a light source (12), a condenser lens (16) and pupil mask (26) forming a beam (32) from the output of... | 03/01/1988 |
| 4728303 | Temperature sensing power plug and method of manufacture A temperature sensitive probe plug in which connector wires are crimped to the terminals of the plug. The power lead wires can be attached to the connector wires by crimping connectors, the base of the plug beneath the crimping connectors being shaped as ... | 03/01/1988 |
| 4727488 | Method and apparatus for detecting seismic events by identifying crossings in the Nth derivative of a waveform An electronic system automatically detects significant events in a seismic trace. The seismic trace is defined as a series of consecutive points, equally spaced in time. The system provides for taking the Nth derivative of the trace at each of the points.... | 02/23/1988 |
| 4726452 | Fluid flow control apparatus A shock absorbing mechanism has a fluid filled pressure chamber with a piston mounted therein along with a restrictive orifice leading to an outer chamber. When shock is transmitted by the piston, fluid is forced through the opening against compressed gas... | 02/23/1988 |
| 4727514 | Programmable memory with memory cells programmed by addressing A programmable memory includes a memory matrix (34) with a row decode circuit (36) and a column decode circuit (48) operable in the program mode to select one of the memory elements in the memory matrix (34). A current boost circuit (50) is operable to pr... | 02/23/1988 |
| 4724605 | Method for making area actuated switch Disclosed is an area actuated switch which can be used, by way of example, in a keyboard for a calculator, learning aid or the like. An area actuated switch array is formed using two insulating sheets made of polyester or polycarbonate; the insulating she... | 02/16/1988 |
| 4726051 | Cordless telephone A cordless telephone is described comprising a fixed part which includes a reception section for receiving exact reception channel frequencies lying in a predetermined frequency range at equal intervals apart and a transmission section for transmitting ex... | 02/16/1988 |
| 4723228 | Memory decoding circuit Column decoding is performed using multiply decoded subsets of column address bits bussed across the array to multiple first stage and second stage column multiplexers. That is, for example, in an 8k by 9 memory wherein each subarray contains 16 selectabl... | 02/02/1988 |
| 4723231 | Source tunable array for ground roll reduction A method of reducing Rayleigh waves (ground roll) in land seismic exploration employs a unique combination of amplitude output from and spacing of the vibrator sources making up a land seismic exploration system. The velocity of the Rayleigh wave for the ... | 02/02/1988 |
| 4721983 | Three terminal tunneling device A three terminal tunneling device analogous to a field effect transistor is disclosed. Preferred embodiments include a planar quantum well (52) with a gate insulator (56) and gate (58) on one surface and with a tunneling barrier (54) and source (62) and d... | 01/26/1988 |
| 4720322 | Plasma etching of blind vias in printed wiring board dielectric A method of plasma etching blind vias in printed wiring board dielectric which comprises the steps of providing a printed wiring board of organic material having a buried electrically conductive pattern in the organic material and an electrically conducti... | 01/19/1988 |
| 4719987 | Bi-planar pontoon paravane seismic source system A bi-planar pontoon paravane is towed by a marine vessel and controls the depth and position of a towed seismic source array. The bi-planar pontoon paravane is made up of a buoyant bridge with right and left wings attached to the long sides of the bridge,... | 01/19/1988 |
| 4720738 | Focal plane array structure including a signal processing system A structure for a focal plane array substrate is disclosed that includes a focal plane array positioned above a semiconductor substrate containing a signal processor. The signal processor is connected to the image detection elements of the focal plane arr... | 01/19/1988 |
| 4719434 | Varactor trimming for MMICs Varactors are incorporated in a monolithic microwave integrated circuit (MMIC) to provide voltage-programmable impedance matching at inputs and/or outputs. This permits the impedance variations normally caused by manufacturing variations in (e.g.) doping ... | 01/12/1988 |
| 4718975 | Particle shield A vacuum processing system for processing semiconductor wafers includes a particle shield (16) disposed above the wafer (10) to block moving particles in a vacuum chamber which would otherwise contact the wafer (10). The particle shield (16) is attached t... | 01/12/1988 |
| 4718166 | Method of making a connector A high reliability low cost connector has flat retainers blanked from an electrically conductive sheel metal and inserted into opening in an electrically insulating body. Each retainer has a post at one end extending from an opening at one side of the bod... | 01/12/1988 |
| 4717813 | Multipassage, multiphase electrical heater A resistor particularly useful as a multiphase, self-regulating fluid heater has passages extending through a body of ceramic resistance material of positive temperature coefficient of resistivity (PTC) for heating fluid adapted to pass therethrough. Seve... | 01/05/1988 |
| 4718087 | Method and system for encoding digital speech information Method and system for encoding digital speech information to characterize spoken human speech with an optimally reduced speech data rate while retaining speech quality in the audible reproduction of the encoded digital speech information. Markov modeling ... | 01/05/1988 |
| 4715109 | Method of forming a high density vertical stud titanium silicide for reachup contact applications The disclosure relates to the formation of reachup contacts for VLSI integrated circuit interconnects wherein studs are formed of a conducting material which reaches up through subsequently applied insulating films or the like to contact metal patterns. T... | 12/29/1987 |
| 4715823 | Plug-in socket assembly for integrated circuit package A Plug-in socket assembly for use with a semiconductor integrated circuit package has a plurality of contact elements mounted on a support member. The contact elements are each formed with a spring portion, an elongated arm portion merging out of the spri... | 12/29/1987 |
| 4716524 | Apparatus and method removing increment/decrement pairs to decimate a block reference stream A reference count decimator and method of operating a computer system includes a decimator queue for containing indications of pointer reference count increments. Apparatus is provided for determining if a referencing event would cause a decrement of a re... | 12/29/1987 |
| 4713939 | Linear drive motor with symmetric magnetic fields for a cooling system A cooling system has a compressor for producing cyclic pressure conditions within a refrigerator's system's volume. The compressor alternately increases and decreases the working volume, thus raising and lowering the coolant pressure. An expander reacts t... | 12/22/1987 |
| 4715014 | Modified three transistor EEPROM cell An electrically erasable programmable semiconductor memory cell having an associated conducting column line, read/write line, sense line and row line includes a floating gate transistor which controls the discharge of the read/write line to the column lin... | 12/22/1987 |
| 4714949 | Electrostatic discharge protection using thin nickel fuse The disclosure relates to a system for protecting HgCdTe and the like MIS arrays from breakdown during fabrication due to electrostatic charge buildup on the array capacitors. This is accomplished by building into the structure a short circuit across the ... | 12/22/1987 |
| 4713677 | Electrically erasable programmable read only memory cell including trench capacitor An EEPROM cell is described which includes a trench formed in the field oxide adjacent to the EEPROM cell. Both the control gate and the floating gate of the cell are formed over this trench. By forming both gates above the trench, the capacitive coupling... | 12/15/1987 |
| 4713142 | Method for fabricating EPROM array Using a method according to one embodiment of the present invention, an EPROM array may be fabricated providing a dense EPROM array. First the polycrystalline silicon floating gates are formed and partially patterned on the surface of a substrate. A thin therm... | 12/15/1987 |
| 4713717 | Protected refrigerator compressor motor systems and motor protectors A motor protector having a thermostat metal element thermally coupled to an electrical motor in a refrigerator compressor motor system has a heater responsive to motor current thermally coupled to the thermostat metal element and has an improved component... | 12/15/1987 |
| 4713678 | dRAM cell and method A dRAM cell and array of cells, together with a method of fabrication, are disclosed wherein the cell includes one field effect transistor and one storage capacitor with the capacitor formed in a trench in a substrate and the transistor channel formed by ... | 12/15/1987 |
| 4711701 | Self-aligned transistor method A method of fabrication for self-aligned gallium arsenide transistors using metal implant masks is disclosed. Preferred embodiments include use of a dummy gate (150) made of aluminum (144) on top of titanium tungsten (142) as an implant mask for source (5... | 12/08/1987 |
| 4711698 | Silicon oxide thin film etching process A plasma dry etch process for etching semiconductor insulating materials, such as thermally grown or CVD deposited silicon oxide, with selectivity to silicon and refractory metals and their silicides, using a fluorinated inorganic center together with a h... | 12/08/1987 |
| 4712129 | Integrated circuit device with textured bar cover A semiconductor integrated circuit device includes a rigid planar member or cover affixed to and overlying at least a portion of the upper surface of a semiconductor integrated circuit bar. The upper surface of the planar member is textured to lock the me... | 12/08/1987 |
| 4710732 | Spatial light modulator and method Spatial light modulators with deflectable metal flaps hinged to conducting posts on a substrate are disclosed. The metal flaps and conducting post may be a single piece, and connected to addressing circuitry in the substrate. Also, plasma etching to fabri... | 12/01/1987 |
| 4709468 | Method for producing an integrated circuit product having a polyimide film interconnection structure A method for making integrated circuits in which a polyimide/conductor multilevel film is cast on a substrate, using available or existing semiconductor processing equipment. The polyimide film is formed from readily available polyamic acid resins, and th... | 12/01/1987 |
