Celebrity Inventors
Walt Disney was no Mickey Mouse inventor. He devised a serious animation camera which he patented. With the device, his company created "Snow White".
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4860359 | Method of voice operated transmit control A system and technique for enabling voice activation of an audio transmission system includes circuitry for storing and delaying an audio input signal, which may include a voice signal, and computer analysis of the input signal to determine voice input in... | 08/22/1989 |
| 4855944 | Noise generator with shaped spectrum Pseudorandom noise having a predetermined frequency spectrum is generated by implementing a finite impulse response filter as an integral part of a feedback shift register sequence generator.... | 08/08/1989 |
| 4853653 | Multiple input clock selector A multiple input clock selector is provided for switching asynchronously from one to another of a plurality of oscillators that generate clock signals having different frequencies. The clock selector has a plurality of sections corresponding to the plural... | 08/01/1989 |
| 4845631 | Scrolling image memory for high speed avionics moving map display A multichannel moving map display for high speed aircraft which utilizes a scrolling image memory which is arranged logically in an N+1×N+1 geometric array of memory cells and having an N×N active area for scanning by an image processor and a 2N+1 memor... | 07/04/1989 |
| 4839606 | Digital FM demodulator signal-to-noise improvement Audio beat notes produced by sampling a square wave in a digital quadrature FM demodulator are reduced by adding random noise, or dither, to the signal to be demodulated to randomly vary the width of successive pulses in the square wave.... | 06/13/1989 |
| 4838173 | Draw bar force sensing locomotive control system An improved strain sensor is disclosed utilizing a linear variable displacement transducer (LVDT) to precisely output the linear strain over a structural member. The LVDT is mounted utilizing a position apparatus having a similar coefficient of thermal ex... | 06/13/1989 |
| 4831211 | EMI/RFI sealed microphonics isolation apparatus and methods A conductive and mechanical energy absorbing gasket is used between an electronics package and a cover of an enclosure to provide microphonics isolation. The electronics package is secured to the cover via a gasket using isolation damping grommets and scr... | 05/16/1989 |
| 4830704 | Method of manufacture of a wiring board A multi-layered printing wiring board and a method for manufacture where the multi-layered printing wiring board has thermal expansion controlling copper invar copper core therein with portions of the invar core therein with portions of the invar being se... | 05/16/1989 |
| 4827378 | Jack coaxial connector EMI shielding apparatus The present invention accomplishes the desirable end result of capacitively coupling the outer shield portion of a coaxial jack connector to an outer panel or chassis while having the jack connector physically and directly electrically connected to a back... | 05/02/1989 |
| 4825381 | Moving map display A multichannel moving map display having a first channel for processing of background geographical data and inputting said process data into a display memory for scanning by a display and a second channel for generating cultural features and storing the s... | 04/25/1989 |
| 4819251 | High speed non-return-to-zero digital clock recovery apparatus A digital clock recovery circuit is presented which uses a delay line to produce a plurality of delayed sample signals. The sample signals are used to sample incoming data in a phase detector and the resultant sampled data is then resampled by the tentati... | 04/04/1989 |
| 4816778 | Inductorless MMIC oscillator When an oscillator is required to operate at high frequencies, there may be more than one frequency that can provide the required 360° phase shift in the feedback signal, and thus more than one oscillating frequency. The present invention eliminates prio... | 03/28/1989 |
| 4817199 | Phase locked loop having reduced response time Apparatus and method for reducing the response time for changing a phase locked loop from one frequency to another in which a condition indicative of a frequency change is detected and the conditions in the phase locked loop are changed in response theret... | 03/28/1989 |
| 4814729 | Precisely tunable impatt diode module for weather radar apparatus A microstrip IMPATT circuit tuning mechanism for use with RF producing IMPATT diode combinations including a microstrip circuit board and a external load line connected by a coupling spring attached to the load line and separated from the microstrip circu... | 03/21/1989 |
| 4814649 | Dual gate FET mixing apparatus with feedback means When a dual gate FET is used in a mixing type circuit, the non-linear characteristics of an over-driven gate on the FET is used to create the sum and difference of the gate applied signals at the drain of the FET. Although feedback typically is used to in... | 03/21/1989 |
| 4811003 | Alternating parallelogram display elements A color display matrix array having parallelogram shaped display elements and the elements in one row all have a slant to the right, while the elements in the immediate adjacent row have a slant to the left.... | 03/07/1989 |
| 4809205 | Digital sine conversion circuit for use in direct digital synthesizers The size, power, and speed constraints in digital sinusoidal waveform generators using values stored in a read-only-memory are alleviated by storing the required values in two smaller read-only-memory devices containing a primary amplitude value and a sec... | 02/28/1989 |
| 4806891 | Broadband signal frequency multiplier apparatus using dielectric resonator means A frequency multiplier circuit is created by using a step recovery diode along with its signal source and reactive circuit to produce a comb of frequencies. This comb of frequencies is then applied to a dielectric resonator circuit for filtering all but t... | 02/21/1989 |
| 4805828 | Thermally durable surface mounted device printed wiring assemblies and apparatus and method for manufacture and repair A method and apparatus for manufacture and repair of thermally durable surface mounted device printed wiring assemblies which includes a printed wiring assembly having surface mounted devices thereon, which are attached to said wiring assembly by a quench... | 02/21/1989 |
| 4805396 | Automatic fuel control and engine synchronizer system and apparatus A first computer and a first servo with connecting apparatus are used to drive a first engine throttle. A second servo and a second computer together with second connecting means are used to drive a second engine throttle. In addition, a cross connection ... | 02/21/1989 |
| 4800840 | Method and apparatus for vapor stream discrimination Disclosed are a method and a matrix panel masking apparatus for forming very closely spaced, parallel, elongated, narrow, and electrically separate conductors on a dielectric surface. The matrix panel masking apparatus comprises a plurality of elongated t... | 01/31/1989 |
| 4801896 | Circuit providing improved lock-in for a phase-locked loop Disclosed is a latching differential phase detector for improving a slew rate and preventing false phase lock due to cycling. The system combines 2π proportional phase detectors to cover a 4π range. The lock monitors of the phase frequency detectors con... | 01/31/1989 |
| 4789987 | Automatic modulation control apparatus A circuit used in conjunction with RF modulating a laser diode and controlling the bias point is presented. The novel function is the amplitude and level shifting modulation of the drive signal at two different low (non-RF) frequencies. The light output i... | 12/06/1988 |
| 4788512 | Gain maintenance apparatus for use with a high gain amplifier incorporated in a closed loop feedback system When there is a loss of tracking in a signal tracking system, such as a phase-lock loop, some components of the system, such as high gain amplifiers, will tend to have their outputs driven to the rail. When the output of an amplifier used to drive a volta... | 11/29/1988 |
| 4787042 | Limiting aircraft vertical acceleration response The presently-disclosed invention utilizes sensed pitched rate and sensed vertical acceleration to prevent aberrant pitch rate command outputs as a function of lead compensated sensed acceleration, controlling the vertical acceleration by sensing when a m... | 11/22/1988 |
| 4782499 | Automatic alignment of a synchronous data system using a local reference clock and external clock with an unknown delay between the two clocks An alignment circuit for use in a synchronous data transfer system for logically comparing the phase of a returned clock signal having an unknown phase relative to a local clock such that the local clock or its inverse can be used to retime returned remot... | 11/01/1988 |
| 4774481 | Wideband transmission line signal combiner/divider RF signals may be split or combined across a wide band of frequencies with low insertion losses, large isolation between input ports, and low voltage standing wave ratio by means of coaxial transmission line sections interconnected in a bridge configurati... | 09/27/1988 |
| 4774477 | Power amplifier having low intermodulation distortion Intermodulation distortion in RF FET amplifiers operating in the Class AB mode is reduced without limiting the bandwidth by providing transformer coupled outputs from both the source and drain circuits. The negative feedback provided by the transformer in... | 09/27/1988 |
| 4772853 | Digital delay FM demodulator with filtered noise dither Audio beat notes produced by sampling a square wave in a digital quadrature FM demodulator are reduced by adding filtered random noise, or dither, to the signal to be demodulated to randomly vary the width of successive pulses in the square wave. Filtrati... | 09/20/1988 |
| 4762966 | Electromagnetic signal interference shielding gasket apparatus The present invention uses a plurality of spaced contact fingers to provide EMI (electromagnetic interference) shielding at the gap junction between the edge of a sheet metal panel and its butt interface with a narrow flat surface. Each of the fingers com... | 08/09/1988 |
| 4757288 | Ceramic TEM bandstop filters A ceramic TEM resonator bandstop filter is disclosed wherein the direct inter-resonator coupling is retarded by a plurality of shorting holes which are positioned between the resonators and extend from the top surface to the bottom surface of said ceramic... | 07/12/1988 |
| 4757192 | Extended dynamic range optical receiver and signal amplifier apparatus A very wide bandwidth, wide dynamic range amplifier incorporating a plurality of feedback paths which are parallel connected upon command is illustrated. The parallel connection is actuated from an input signal strength sensor which has built-in hysteresi... | 07/12/1988 |
| 4752749 | Fast response tuner Frequency disturbances caused by voltage fluctuations which occur when a bandwidth limiting lag network is switched in and out of a frequency synthesizer circuit to provide the wide bandwidth necessary for fast frequency hopping are eliminated by the inve... | 06/21/1988 |
| 4750181 | Dynamic circuit checking apparatus using data input and output comparisons for testing the data integrity of a circuit The present invention relates to a checking circuit concept which determines the integrity of data passing through a further circuit to be checked such as an elastic buffer. The concept is based on the fact that a serial data stream entering an elastic bu... | 06/07/1988 |
| 4748423 | Hot standby amplifier apparatus The realization that field effect transistor current can be controlled by adjusting the gate voltage and thereby controlling the amplifier power consumption with only a slight degradation of RF gain and signal quality is utilized in a hot standby radio sy... | 05/31/1988 |
| 4745379 | Launcher-less and lumped capacitor-less ceramic comb-line filters An inhomogeneous ceramic dielectric microwave RF TEM resonator filter having a plurality of unplated notches in the ceramic for enhancing direct inter-resonator coupling. The filter is implemented without the lumped coupling capacitors which are typically... | 05/17/1988 |
| 4740899 | Use of headwind and airspeed to achieve a transition to a hover in a helicopter or vtol aircraft An improved system and technique is disclosed which enables an aircraft control system to bring an aircraft to hover with no direct measurement of ground speed. The system includes a device for numerically calculating a value for ground speed based on a d... | 04/26/1988 |
| 4740690 | Absolute combinational encoders coupled through a fixed gear ratio An encoder system and technique is disclosed for providing greater resolution for position indications. The encoder includes multiple small absolute encoders coupled through a fixed gear ratio to provide an increase in the number of positions which may be... | 04/26/1988 |
| 4740964 | Alarm indications signal detection apparatus A circuit using the non-linear charge characteristics of a RC network to, in combination with a consecutive bit logic detector circuit, establish a given integrated output if the consecutive bit check indicates noncorrelation anymore often than once per f... | 04/26/1988 |
| 4739247 | Bidirectional RF switch matrix module apparatus A controllable switch matrix module is disclosed for bidirectional transmission of signals between multiple ports in a single module, where the attenuation characteristics are dynamically alterable. The invention uses pin diodes both for isolation and for... | 04/19/1988 |
