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| Patent # | Description |
|---|---|
| US-4,255,816 |
Receiving apparatus having a plurality of antennas An apparatus is disclosed for receiving and processing transmitted electromagnetic waves, for example transmitted radio signals which contain audio information... |
| US-4,255,815 |
Electronic switching for AM-FM radio An integrated circuit, when operated from a simple single-pole-double throw switch, performs all of the functions required to switch modes in an FM-AM radio. The... |
| US-4,255,814 |
Simulcast transmission system A system of the type wherein transmissions of the same information are simultaneously broadcast by spatially removed transmitter sites. A control center... |
| US-4,255,813 |
Dicode transmission system A dicode transmission system wherein a data is transmitted with the aid of an intermittent asynchronous system in the form of dicode signal. The disclosed system... |
| US-4,255,812 |
Signal regenerating apparatus with DC compensation In known signal regenerating apparatus a high frequency signal is continuously applied to the secondary side and inductively coupled back to a resonant circuit... |
| US-4,255,811 |
Key controlled block cipher cryptographic system A cryptographic system for encrypting a block of binary data under the control of a key consisting of a set of binary symbols. The cryptographic system may be... |
| US-4,255,810 |
Jam resistant frequency modulation system 1. An interference proof FM video communication system comprising: means for frequency modulating a carrier frequency by a video signal; means for bi-phase modulating the... |
| US-4,255,809 |
Dual redundant error detection system for counters A pair of identical multiple stage digital counters receive count advance inputs designating the occurrence of the event being monitored but with the inputs... |
| US-4,255,808 |
Hard or soft cell failure differentiator A method of and an apparatus for differentiating between hard and soft failures of semiconductor memory cells for the purpose of error logging only hard... |
| US-4,255,807 |
Error testing of recording media such as magnetic tape Process and apparatus for detecting and evaluating defects in memory-retaining characteristics of magnetic tape, said process and apparatus providing means for... |
| US-4,255,806 |
Display means for chronometers with electro-optical elements A display for an electronic timepiece or the like has an analog electro-optical display comprising a plurality of segment electrodes radially disposed about a... |
| US-4,255,805 |
Data introducing arrangement A countdown device such as a timer employing a digital display is provided ith a plurality of up/down counters, one for each digit column. A single control switch... |
| US-4,255,804 |
Electronic watch An electronic watch adapting a matrix drive display system. An electronic watch comprises a single voltage level power source serving as the energy source for a... |
| US-4,255,803 |
Electronic timepiece equipped with alarm function In an electronic timepiece equipped with an alarm function, an alarm time memory circuit is provided for setting in an alarm time by actuation of an external... |
| US-4,255,802 |
Electronic timepiece An electronic timepiece having a pair of touch-sensitive electrostatic capacitance switches which must be actuated in a predetermined sequence to enable setting... |
| US-4,255,801 |
Electronic watch An electronic watch comprising a timepiece circuit consisting of a reference oscillation source, a frequency divider and a display driving circuit, a display... |
| US-4,255,800 |
Method and apparatus for locating underwater objects 2. In a combination, a transducer for an underwater object locator comprising a plurality of radiating elements, each element comprising a magnetostrictive... |
| US-4,255,799 |
Underwater-target direction-finding apparatus 1. In an underwater-target direction-finding apparatus of echo-ranging ty in combination: receiver means, including a network tunable to resonance at echo... |
| US-4,255,798 |
Method and apparatus for acoustically investigating a casing and cement
bond in a borehole Methods and apparatuses for acoustically investigating a casing in a borehole to derive the quality of a cement bond behind the casing and casing thickness are... |
| US-4,255,797 |
Sonic attenuation system A beam of sound, of sufficient amplitude for inducing a finite amplitude effect in water, is directed into a field of sound for interaction therewith to produce... |
| US-4,255,796 |
Associative information retrieval continuously guided by search status
feedback An associative information retrieval system accepts information from a user and generates a query mask utilizing nested superimposed code words to search through... |
| US-4,255,795 |
Programmable binary correlator A programmable binary correlator with one-digit, digital sampling is disclosed. The binary correlator includes input comparators for converting a signal to... |
| US-4,255,794 |
Digital filter The digital filter which performs a filter mathematical operation on 2N samples Zi expressed by binary codes in which an output sample y(n) of said filter is... |
| US-4,255,793 |
Apparatus for generating nonlinear pulse patterns Apparatus for generating a plurality of nonlinear pulse patterns from a single linear pulse pattern. A first counter counts the pulses of the linear pulse... |
| US-4,255,792 |
Automated analog circuit test system An automated sequential test system, designed to compare analog test signals, derived from plurality of test nodes, located on the circuit under test with the... |
| US-4,255,791 |
Signal processing system An adaptive array signal processing system employs a correlation discriminant operator or signal recognizer. The operation of the signal recognizer is dependent... |
| US-4,255,790 |
Programmable pulse generating system This system generates output pulses in successive periods of time, each including sub-intervals during which the output pulses may be varied in accordance with a... |
| US-4,255,789 |
Microprocessor-based electronic engine control system A method and apparatus for controlling the various functions of an internal combustion engine using a program-controlled microprocessor having a memory... |
| US-4,255,788 |
Phasing detector for continuous flow systems A phasing system is provided for parallel channel continuous flow systems wherein the individual test channels have different flow times although intersample... |
| US-4,255,787 |
System and method for controlling the power generated by a system of
hydro-plants and thermal units A method and apparatus are disclosed for controlling and coordinating the power generated by a combined system of thermal units and hydro plants. In particular,... |
| US-4,255,786 |
Multi-way vectored interrupt capability A multi-way vectored interrupt automatically addresses any one of a plurality of locations in a memory according to a unique function code. Hardware is provided... |
| US-4,255,785 |
Microprocessor having instruction fetch and execution overlap A microprocessor having separate bidirectional instruction and data busses is disclosed which allows the fetching of instructions from a program memory to be... |
| US-4,255,784 |
Transformer-rectifier apparatus A three-phase transformer having a delta-connected primary and two identical secondary windings per phase connected in hexagon, has symmetrical taps on each... |
| US-4,255,783 |
Selective commutation circuit for an inverter The commutation circuit of an inverter is actuated only when the main thyristors cannot be transitioned to the nonconducting state by the removal of the gate... |
| US-4,255,782 |
Electrical energy conversion systems Electrical circuits, apparatus and methods for a variety of applications. A switching device subdivides an alternating current input signal into a plurality of... |
| US-4,255,781 |
Luminaire latch device Latch device for hinged luminaire door comprises a pair of spaced spring steel members attached at their upper ends to the luminaire housing. At their lower ends... |
| US-4,255,780 |
Illumination assembly for use with electrical terminal units An illumination assembly for facilitating visual determination of the situs of an electrical terminal unit, the unit being mountable on a wall with a removable... |
| US-4,255,779 |
Package machine insertable rolled metallized film capacitor A small rolled metallized film capacitor is completely encapsulated within a thin walled box with bonded terminals projecting from an open end of the box. The... |
| US-4,255,778 |
Reference signal processor circuit To counteract the phase error in the signal from an rpm transducer of an engine test stand or analyzer at varying engine speeds, the signal processor of the... |
| US-4,255,777 |
Electrostatic atomizing device This invention relates to an electrostatic atomizing device and a process thereof for the formation of electrostatically charged droplets having an average... |
| US-4,255,776 |
Apparatus for neutralizing electrostatic charges and for removing dust
from various objects Disclosed herein is an apparatus for neutralizing electrostatic charges and for removing dust from various objects, comprising a trough shaped member fixed to a... |
| US-4,255,775 |
Electrostatic precipitator rapper control system with enhanced accuracy A comprehensive multiple rapper control system controls rapping intensity with enhanced accuracy, controls a large number of rappers in any desired sequence with... |
| US-4,255,774 |
Static instantaneous overcurrent relay with low transient overreach A static instantaneous overcurrent relay with reduced transient overreach is provided for use in protecting an a-c power line from overcurrents. The relay... |
| US-4,255,773 |
Ground fault interruptor A ground fault interruptor comprising a reed relay connected to the secondary of a differential transformer, a load connected to the primary windings of said... |
| US-4,255,772 |
Read/write magnetic head assembly with magnetoresistive sensor A thin film magnetic head assembly incorporates a nonconductive magnetic substrate which serves as a first pole piece and a thin film magnetic layer for the... |
| US-4,255,771 |
Video signal reproducing apparatus A control system for a helical scan video tape recorder having two scanning heads each of which employs a bimorph plate to dynamically control the tracking path... |
| US-4,255,770 |
Dustproof type magnetic disc apparatus A dustproof type magnetic disc apparatus has structure for starting rotation of a magnetic recording medium, after driving a blower for dust separation for a... |
| US-4,255,769 |
Low-noise preamplifier The preamplifier comprises amplifying means, the output of which is inverted relative to the input, and a feedback circuit connected from the output to the input... |
| US-4,255,768 |
Tracking control apparatus for a rotary head, variable speed signal
reproducing system The present invention is intended for use in a signal reproducing system of the type having at least one rotary transducer for scanning traces across a movable... |
| US-4,255,767 |
Electronically controlled magnetic recording An electronically controlled magnetic recorder for rapidly optically scanning an original document at a distance and for producing a latent magnetic image... |
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