Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 5479047 | Self-aligned bipolar transistor with very thin dielectric layer interfacing between poly and active area A modification of the self-aligned double poly fabrication process for bipolar transistors employs a thin sacrificial dielectric film to protect the wafer surface during the etching of an emitter opening through an overlying polysilicon contact layer. The... | 12/26/1995 |
| 5414804 | Fast image decoder A fast image decoder 20 for decoding a compressed image encoded using the Poisson picture processing algorithm is disclosed. The invention includes a run length decoder 23 for run length decoding the compressed image, a processing circuit including a look... | 05/09/1995 |
| 5410274 | Single-ended and differential amplifiers with high feedback input impedance and low distortion First and second current feedback transconductance amplifiers (102,104) each have a high impedance voltage input, a low impedance current input and a pair of push-pull current outputs. In a single-ended configuration, an input signal is applied to the vol... | 04/25/1995 |
| 5407841 | CBiCMOS fabrication method using sacrificial gate poly A complementary bipolar CMOS fabrication method uses a common deposition for both the CMOS gate contacts, and as a sacrificial layer for patterning bipolar devices. The deposition is removed from the bipolar devices and, after implanting base and emitter ... | 04/18/1995 |
| 5406122 | Microelectronic circuit structure including conductor bridges encapsulated in inorganic dielectric passivation layer A gallium arsenide Monolithic-Microwave-Integrated-Circuit (MMIC) flip chip or other microelectronic circuit structure (10) includes a plated gold bridge (28) which serves as metal interconnect crossover between sites (24,-26) on a substrate (12). A first... | 04/11/1995 |
| 5405680 | Selective emissivity coatings for interior temperature reduction of an enclosure Selective emissivity coatings are disclosed for temperature reduction of enclosures such as vehicles and building structures. The coating includes a selective emissivity material such as silicon-oxy-nitride having a desired thermal emissivity function whi... | 04/11/1995 |
| 5404405 | FM stereo decoder and method using digital signal processing A digital FM stereo decoder uses the phase characteristics of linear phase FIR filters, together with a trignometric operation, to generate a 38 kHz subcarrier signal from a 19 kHz pilot. The subcarrier signal is mixed with the input composite signal from... | 04/04/1995 |
| 5402064 | Magnetoresistive sensor circuit with high output voltage swing and temperature compensation A magnetoresistor (MR) and a non-magnetoresistor (NMR) are formed of indium antimonide or other magnetoresistive material in thermal proximity to each other on an integrated circuit substrate (100). Hall effect shorting strips (104) are formed on the magn... | 03/28/1995 |
| 5398265 | Computer subsystem reset by address dependent RC discharge In a system wherein a system master (11) communicates with a plurality of subsystems (13, 25, 27, 29), each subsystem (13, 25, 27, 29) is associated with a unique reset address and a reset circuit which recognizes that reset address and generates a reset ... | 03/14/1995 |
| 5391236 | Photovoltaic microarray structure and fabrication method A photovoltaic microarray such as a solar cell array is monolithically fabricated, without a supporting substrate, by forming a network of trenches from one side of a substrate to define separate cell areas, filling the trenches with an insulative filler ... | 02/21/1995 |
| 5384650 | Light valve with twisted perpendicular liquid crystal with a negative dielectric anisotropy A liquid crystal light valve projection system is provided with increased optical overshoot, and thereby decreased optical response time, by employing a liquid crystal mixture (52) having molecules substantially perpendicularly aligned to the face of the ... | 01/24/1995 |
| 5382848 | Digital integrated time of arrival detector A time of arrival detector for an analog pulse signal digitizes the pulse, digitally delays the digitized signal in one path and converts the delayed signal back to a delayed analog version of the input signal. In a second path an undelayed analog version... | 01/17/1995 |
| 5378938 | Sample-and-hold circuit including push-pull transconductance amplifier and current mirrors for parallel feed-forward slew enhancement and error correction A transconductance push-pull amplifier (20) generates primary push-pull currents (I1, I2) corresponding to a voltage input signal (VIN). Current mirrors (42,44) generate secondary push-pull currents (I3, I4) corresponding to the primary push-pull currents... | 01/03/1995 |
| 5378926 | Bonding of integrated circuit chip to carrier using gold/tin eutectic alloy and refractory metal nitride barrier layer to block migration of tin through via holes A gallium arsenide monolithic microwave integrated circuit (MMIC) chip (12) has microelectronic devices (16, 18) formed on a frontside surface (12a), and via holes (12c, 12d) formed through the chip (12) from the frontside surface (12a) to a backside surf... | 01/03/1995 |
| 5374103 | Self-captivated latch pawl A removable passenger control unit (20) is detachably latched in position in a recess in the arm (12) of a passenger seat by means of a rotatable C-shaped pawl (40) that is mounted on a support arm (54) that projects into a recess (48,50,52) in an end of ... | 12/20/1994 |
| 5361034 | Apparatus for measuring the conductivity of a fluid An apparatus for measuring the conductivity of a fluid is disclosed. The invention 10 provides both a contact and non-contact monitoring of fluid conductivity by measuring the A.C. dielectric properties of the fluid. The invention 10 transmits an electrom... | 11/01/1994 |
| 5350952 | Sample and hold circuit with push-pull output charging current A sample and hold circuit uses a Class AB amplifier architecture rather than a diode bridge in a sampling gate. Input and output transistor pairs (Q5, Q6; Q7, Q8) receive an input voltage (Vin) and provide at an output terminal (6) (a) an output voltage t... | 09/27/1994 |
| 5350662 | Maskless process for forming refractory metal layer in via holes of GaAs chips A "maskless" process is provided for the formation of a refractory metal layer (22b), such as titanium, in via holes (18) through GaAs wafers (12) to contact microwave monolithic integrated circuit (MMIC) devices (10) formed on the front surface (12a) the... | 09/27/1994 |
| 5343163 | Single-ended and differential transistor amplifier circuits with full signal modulation compensation techniques which are technology independent A compensating transistor (Q5) is connected in series with the collector of a main transistor (Q3), and a level shifted replica (Vin+V1) of an input signal (Vin) is applied to the base of the compensating transistor (Q5) to maintain a constant voltage dif... | 08/30/1994 |
| 5317689 | Digital visual and sensor simulation system for generating realistic scenes A system using a ray-tracing algorithm and a hierarchy of volume elements (called voxels) to process only the visible surfaces in a field of view. In this arrangement, a dense, three-dimensional voxel data base is developed from the objects, their shadows... | 05/31/1994 |
| 5315231 | Symmetrical bipolar bias current source with high power supply rejection ratio (PSRR) A bandgap reference voltage source (104) has positive and negative terminals (104a,104b) which are connected through high impedance constant current sources (124c,126c) to positive and negative voltage supplies (+VDD,-VEE) respectively. The effect of vari... | 05/24/1994 |
| 5315169 | Power-efficient sample and hold circuit using bipolar transistors of single conductivity type A diode bridge includes a plurality of diodes for coupling an input voltage signal to a holding capacitor for sampling when the diodes are forward biased, and uncoupling the voltage signal from the capacitor for holding when the diodes are reverse biased.... | 05/24/1994 |
| 5315154 | Electronic assembly including heat absorbing material for limiting temperature through isothermal solid-solid phase transition A solid polyhydric alcohol material (16) is provided in thermal contact with an electronic component (14) which will be damaged if its temperature rises above a certain value. The material (16), known as a phase change material (PCM), exhibits an isotherm... | 05/24/1994 |
| 5313113 | Sample and hold circuit with full signal modulation compensation using bipolar transistors of single conductivity type A diode bridge (12) includes a plurality of diodes (D1,D2,D3,D4) for coupling an input voltage signal (Vin) through a resistor (RH) to a holding capacitor (CH) for sampling when the diodes (D1,D2,D3,D4) are forward biased, and uncoupling the voltage signa... | 05/17/1994 |
| 5291032 | Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers An optical fiber evanescent wave fuel sensor, employing a light source with a wavelength selected to be at the strong infrared absorption lines of the fuel, typically hydrocarbons. The amount of light leaking from the optical fiber is an exponential funct... | 03/01/1994 |
| 5283512 | Charge balancing of batteries during charging A battery system comprises a plurality of sodium-sulfur storage cells connected in series to form a battery, with voltage measurement leads attached across each of the individual storage cells. A charge-limiting circuit controllably isolates an individual... | 02/01/1994 |
| 5283452 | Distributed cell monolithic mircowave integrated circuit (MMIC) field-effect transistor (FET) amplifier A distributed cell field-effect transistor (FET) amplifier (40) includes a plurality of parallel, elongated source (46a) and drain (46b) regions of individual FET unit cells (46) formed in a substrate (42) in transverse alternating relation, with a plural... | 02/01/1994 |
| 5280636 | Multi-band digital receiving apparatus and method with bandwidth reduction Multiple simultaneous uses of a multi-service digital receiver are made possible with a single practical analog-to-digital converter by translating the various service bands in frequency to form a single, generally continuous composite service band in whi... | 01/18/1994 |
| 5278837 | Multiple user digital receiver apparatus and method with combined multiple frequency channels A digital receiver apparatus and method, designed for multiple simultaneous users, digitizes a received analog RF signal and performs multiple frequency translations of the signal so that desired stations are grouped into a common frequency band separate ... | 01/11/1994 |
| 5275635 | Coastal air wash system A system for washing the air in a coastal environment in which a volume of air moves from a land mass to a water mass. The system includes a plurality of fountains 12 mounted offshore which spray a volume of water into the path of the air flow. Water is s... | 01/04/1994 |
| 5274342 | Microwave monolithic integrated circuit (MMIC) including distributed cascode bipolar transistor amplifier unit A microwave monolithic integrated circuit (MMIC) (40), includes a substrate (60), and an input bus (62), output bus (64), ground bus (66) and bias bus (68) formed as striplines of a four-line coplanar waveguide on the substrate (60) with the input bus (62... | 12/28/1993 |
| 5252841 | Heterojunction bipolar transistor structure having low base-collector capacitance, and method of fabricating the same The base-collector capacitance in a heterojunction bipolar transistor (HBT) (50) is reduced, thereby providing increased cutoff frequency and power gain, by eliminating a portion of a collector contact layer (54) which normally underlies a base electrode ... | 10/12/1993 |
| 5251218 | Efficient digital frequency division multiplexed signal receiver A digital radio frequency (RF) or intermediate frequency (IF) receiver for frequency division multiplexed (FDM) signals contained in a predetermined FDM band including an RF amplifier, an RF bandpass anti-alias filter, and an analog-to-digital (A/D) conve... | 10/05/1993 |
| 5250911 | Single-ended and differential transistor amplifier circuits with full signal modulation compensation techniques which are technology independent A compensating transistor (Q5) is connected in series with the collector of a main transistor (Q3), and a level shifted replica (Vin+V1) of an input signal (Vin) is applied to the base of the compensating transistor (Q5) to maintain a constant voltage dif... | 10/05/1993 |
