Abstract: A semiconductor nonvolatile memory comprised of a p-type silicon substrate 3, an n.sup.+ drain 5 and an n.sup.+ source 9, the source and the drain regions defining an MOS channel region 7. On top of the channel region 7 there are laminated a silicon dioxide film 18 and a semiconductor rich oxide film 20 which has been nitrided so as to leave silicon nitride region therein. Further on top of these layers, there is formed a polysilicon film 22, which is etched to form a control electrode. By using the memory cell and appropriate select transistors, a semiconductor nonvolatile memory (EPROM) is constructed.

Abstract: A portable tester for local area networks comprising a AUI circuit coupled to a media specific transceiver, a battery, a push-to-test switch and four light emitting diodes and an RJ45 jack for each of a personal computer and a network hub. When the push-to-test switch is pushed, power is applied to the media access unit and a link pulse is generated for coupling via a PC jack to a personal computer plugged into that jack. The link pulse is also coupled to any network hub plugged into a hub jack. The PC and network hub cannot both be simultaneously connected. If whichever unit is connected receives the link pulse and generates its own link pulse which is received by the tester, a link status LED is lit green. Otherwise, it is left dark. If the unit connected outputs a data packet in response to receipt of the link pulse, a receive data LED is lit green. Otherwise, it is left dark. If the link pulse is positive-going on the correct line, a polarity LED is lit green. Otherwise, it is left dark.

Abstract: A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 725 degrees Fahrenheit, cooling the heated oil, adding an oxidizing agent to the oil, allowing the acid sludge to settle within a period of approximately 24 to 72 hours, separating the acid-sludge-free oil from the acid sludge which settles out of solution as a result of addition of the oxidizing agent, and adding a polishing agent and separating the re-refined oil from the spent polishing agent. The spent polishing agent is recycled, and the acid sludge which settles out after oxidation is converted to either hard, oxidized asphalt or soft asphalt or asphalt products such as emulsions etc. The process produces a high quality re-refined oil rapidly and economically with no acid sludge disposal problem.

Abstract: A high speed switching technology suitable for implementing field programmable gate arrays using current mode logic in the high speed data path, and CMOS steering logic outside the high speed data path to enable the high speed switching logic and to implement multiplexer, selector and crossbar switch functions. High speed emitter follower logic compatible with the high speed switching logic for level shifting, buffering, and providing more current sink or source capacity is also disclosed.

Abstract: A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to perform digital signal processing on the digital data received from the antenna to improve the quality and accuracy of calculated speeds for patrol speed, strongest target speed and fastest target speed. Fastest target speed can be displayed simultaneously with strongest target speed. Signal processing techniques are used to suppress false signals caused by double and triple bounce, harmonics, intermodulation products, video display terminal interference, etc.

Abstract: A police radar utilizing digital data transmission from the antenna unit to a separately housed counting and display unit. The antenna has a double balanced mixer to suppress even order harmonics. The counting and display unit has a computer programmed to perform digital signal processing on the digital data received from the antenna to improve the quality and accuracy of calculated speeds for patrol speed, strongest target speed and fastest target speed. Fastest target speed can be displayed simultaneously with strongest target speed. Signal processing techniques are used to suppress false signals caused by double and triple bounce, harmonics, ntermodulation products, video display terminal interference, etc.

Abstract: In an apparatus for resizing an image, comprising interpolation filter means for receiving a stream of input pixels having a predetermined sampling period P and a first sampling rate of S pixels/lines, and interpolating the stream of input pixels at a predetermined interpolation rate for generating a first derived sample stream of pixels having a further sampling period (M/(CL))P and a second sampling rate of T pixels/lines, where L is a first positive integer greater than one, C is a positive integer and M is smaller than CL, and where either 2.sup.n M/CL or 2.sup.

Abstract: The invention disclosed relates to a facsimile transmission/reception method and apparatus using a common bus in an office automation system, and in detail to a facsimile transmission/reception method and apparatus using a single common bus for transmitting and receiving data and control signals to be interfaced with the outer devices.The apparatus comprises a decoding means 31 being applied with a scanning output data chip selection signal CS1 and a liquid crystal display chip selection signal CS2 for decoding a corresponding selection output signal, a selection output means 34,35 controlled by a first and second storage means 32 and 33 latching data, control signals and the like and the decoding means for selectively outputting the data latched by the first and the second storage means, and a common bus 37 for transmitting the data outputted by the selection output means to the operation panel unit 40.

Abstract: This invention addresses the need to map information from databases and reports to a new dimension of structured, intelligent interpretations or diagnostics of that information, and then querying in a coordinated manner both the original information and the resultant diagnostics databases. The invention combines elements currently available in decision support tools, programming languages and expert system building tools. First, querying mechanisms for the information in reports and databases is provided. Second, both a test processing engine and an Expert System run a set of if-then-else tests and expert rules on said information, and the resulting coded diagnostics are stored in a diagnostics database.

Abstract: A nonreciprocally coupled ferrimagnetic band reject and bandpass filter having passbands from 2-18 GHz and 6-18 GHz respectively. The band reject filter comprises one or more ferrimagnetic spheres shielded from each other by placement in nonmagnetic, electrically conductive cavities in a block placed in the flux gap of a tuning magnet. Nonreciprocal coupling is achieved by using full RF coupling loops and establishing all factors that affect the transmission line delay for travel of signals from one point in the filter to another such as loop length and size, cavity size, sphere size and spacing, dielectric constant, RF coupling loop wire size and spacing etc. such that the effective electrical length from the center of one full RF coupling loop to the centerline of the neighboring RF coupling loop is 1/4 wavelength, i.e.

Abstract: A thermoelectric module (10) which is adapted to selectively heat or cool the inside of a container includes an exterior heat exchanger (51) having a plurality of spaced and generally parallel undulating fins (52). An exterior fan (31) is positioned adjacent to the exterior heat exchanger (51) and is adapted to move air from the outside of the container through the spaces between the fins (52) of the exterior heat exchanger (51). An interior heat exchanger (54) has a plurality of spaced and generally parallel undulating fins (55). An interior fan (42) is positioned adjacent to the interior heat exchanger (54) and is adapted to move air from the inside of the container through the spaces between the fins (55) of the interior heat exchanger (54). A motor (28) drives the fans (31, 42) and is cooled by air drawn in through apertures (34) in the hub (32) of the exterior fan (31).