Abstract: A solder paste applicator for applying solder to a selected area of a printed circuit board on which electronic components are mounted. The applicator includes a housing with a plate mounted in one end. The plate has a pattern of holes through it corresponding to the pattern of solder to be applied to the board. The housing has movable legs mounted to the outer surface for positioning the plate a distance from the surface of the board which corresponds to the thickness of the solder to be applied. The solder is held in a reservoir above the patterned plate. A piston is positioned in the housing and is pushed against the reservoir for dispensing the solder.

Abstract: There is described an emergency action system which is an integrated security control and communications system employed for relatively large and secure installations such as embassies, military buildings and so on. The emergency action system apparatus consists of two major subdivisions. A first subdivision is a security and control subsystem which operates to monitor and control sensors and actuators associated with an intrusion detection system. The security and control subsystem handles event logging, generates alarm map displays and switches and distributes surveillance video. The second subdivision of the system is associated with user emergency action consoles which consoles provide the interface and handle voice and data communications to enable the user to interface with the existing communications system as located on the installation as well as with the intrusion detection system.

Abstract: A high speed GaAs FET is provided by forming a sandwiched GaAs channel between AlGaAs layers and employing an Si implant to provide channel doping for the GaAs channel. The poor activation efficiency of Si in AlGaAs relative to its activation efficiency in GaAs provides a channel having a higher active dopant concentration than exists in the adjacent sandwiching layers. This tends to enhance conductivity in the channel relative to the sandwiching layers.

Abstract: A telescopic sight assembly has formed therewith a rotatable or adjustable housing which housing includes an image intensifier tube and suitable optics to be used in conjunction with a conventional telescopic assembly. By means of a simple action associated with the telescopic sight, a user can rotate a control knob or lever and, hence, change operation of the sight for day to nighttime use, or vice versa. Included in the assembly is a conventional image intensifier module and the necessary electronics to operate the module. The housing is rotatable or pivotable and includes means which can be selected by the user to select night or daytime operation and, hence, afford the user telescopic viewing together with image intensification as desired. The device is particularly adaptable to be mounted in conjunction with small arms type systems.

Abstract: An image intensifier tube has a faceplate formed of optical material. The outer surface of the faceplate has light receiving and light transmitting surfaces and a layer of a reduced metal oxide material for reducing stray light which is transmitted into the faceplate and reflected off of internal surfaces thereof. The layer has a blackened appearance and is formed by reducing the metal oxide of the faceplate material with hydrogen at a predetermined pressure and temperature to cause the blackening to reach a depth sufficient to reduce transmission of stray light therethrough.

Abstract: An adaptor is provided that can be mounted on a typical straight fuel injector having narrowly-spaced upwardly projecting terminals, so the straight injector can be used in place of an inclined injector which has widely spaced terminals projecting at a 45.degree. incline from the vertical. The adaptor includes a housing (40) with a lower part that opens along a downward axis (44) and an upper part that opens along an upwardly inclined axis (50). A pair of bent plate-like contacts (52, 54) are mounted in the housing, with each contact having an upper part (56) lying within the upper housing part and extending along the inclined axis, and a lower contact part (60) lying in the lower housing part and extending perpendicular to the downward axis. The lower housing part is permanently mounted on an upper end of the injector body, with the injector terminals (24) projecting through holes in the contact lower parts to hold the contact securely in position.

Abstract: A remote control system, particularly for television sets, includes a remote control receiver and a remote control transmitter. The receiver and transmitter are switched to the menu mode by means of a menu key. At least two menu fields are associated with the remote control receiver and are displayed on the screen of the television set. The menu fields are individually selectable by means of the remote control transmitter. The selection is preferably accomplished by manually aligning the remote control transmitter with the displayed menu field to be selected.

Abstract: An integrated CMOS multiplication circuit is operated in a parallel-serial mode and executes binary multiplication of a multiplicand and multiplier within the period of a system clock signal by an improved implementation of the two's complement method. The multiplication circuit includes an input shift register for receiving the multiplicand bits in parallel and reading them out serially as clocked by an internal clock signal of higher frequency than the system clock signal, a single chain of multiplying stages each receiving a respective one of the multiplier bits and the serially read-out multiplicand bits and performing successive partial product operations thereon, a parallel adder having a corresponding number of adding stages for successively adding the sum and carry bit outputs of the multiplying stages, an output shift register for serially receiving the output bits of the parallel adder, and a clock driver which generates the higher frequency internal clock signal from the system clock signal.

Abstract: A self-aligned gate (SAG) transistor or FET is described which transistor overcomes several disadvantages of the prior art for making SAG field-effect transistors. The disadvantages noted above result from the fact that current SAG FET's have a symmetrical structure, with n+ regions on either side of the gate electrode. This invention provides a means of masking off a region on the drain side of the gate electrode before performing an n+ implant, so that the n+ implanted region is asymmetrical on the two sides of the gate electrode. This has the desired beneficial effect of reducing the parasitic source resistance, without the deleterious effects on gate-drain breakdown voltage, gate-drain capacitance, and output resistance that invariably accompany a high doping level on the drain side of the gate. Using this technique, substantially increased performance can be obtained from a self-aligned FET.

Abstract: An electrical contact switch for mounting on a printed circuit board, having a base provided with contacts, an illuminated cover movable with respect to the base and arched coil springs on the base arranged transversely to the direction of movement of the cover which resist downward movement of the cover. A shoe joined to the cover is guided for limited movement toward the base and is provided with contacts that engage the contacts on the base.

Abstract: A contact assembly for installation in an electrical connector, provides effective electromagnetic filtering in a simple, compact, and rugged construction that facilitates in-field replacement of a damaged contact assembly. The contact assembly includes a signal conductor, a diode for diverting high voltages on the signal conductor to ground, and a "pi" filter for filtering out unwanted frequencies. The "pi" filter includes a ferrite bead inductor coupled to the signal conductor and a first capacitor coupling a location of the signal conductor on a first side of the inductor to ground. The other capacitor of the "pi" filter is formed by the capacitance of the diode, with the diode connected to a signal conductor location on a second side of the inductor, and with the capacitance of the diode similar or equal to that of the first capacitor.

Abstract: A system is described for use with fuel injectors mounted on fuel rails of an engine, to connect the output lines of an electrical circuit to the fuel injectors, which provide an orderly and reliable connection. The system includes a connector assembly with a printed circuit board sandwiched between upper and lower molded housing parts. The circuit board has pairs of contacts at each injector location for mating with the fuel injector contacts, and the circuit board has conductors thereon leading from a connector end portion to the pairs of contacts. In an assembly where the connector end portion extends largely perpendicular to the rest of the assembly, a flexible circuit board is provided which is held in a bend by correspondingly angled upper and lower housing parts. In an assembly where the axes of the fuel injectors do not extend perpendicular to the length of the fuel rail, the lower housing part has several face locations angled from the length direction of the board.

Abstract: A digital color-signal-processing circuit generates a phase-angle signal and a magnitude signal as outputs in response to an R-Y color-difference signal and a B-Y color-difference signal. The circuit includes a resolver which convertes cartesian coordinate representations of the color-difference signals into polar coordinate representations of the phase-angle signal and the magnitude signal. The phase-angle signal carries the hue information, which is processed in a hue stage. The magnitude signal carries the saturation information, which is processed in a saturation stage. The processed phase-angle signal and the processed magnitude signal are reconverted to cartesian coordinate representations of the R-Y and B-Y color-difference signals in a reconverting resolver.

Abstract: An overload detector for an analog-to-digital converter. A series of logic gates are connected to the output of an analog-to-digital converter for determining the presence of an upper limit and a lower limit of an overload condition. A signal indicative of such a condition is input to circuitry which extends the length of the signal so that it is visible or audible to a user. An algorithm for a computer causes a latch to be engaged when an overload condition occurs. The latch is coupled to a pulse stretching circuit which permits a visible or audible signal to be generated.

Abstract: A connector is provided of the type that has rows of contacts, which minimizes cross talk between adjacent contacts. An interceptor plate (60, FIG. 2) which is grounded or at another controlled potential, extends along each row of contacts (34), the plate lying close to the row to provide better capacitive coupling between each contact and the plate than between contacts of the same or different rows.

Abstract: An apparatus for heat cleaning a semiconductor material by producing a uniform thermal distribution in the area of the material being cleaned. In one arrangement a heater block is positioned between a lamp nad a photocathode. The semiconductor material layer of the photocathode is directed away from the lamp. The heater block absorbs the entire range of wavelengths radiated by the lamp but reradiates only long wavelengths to the photocathode. In another arrangement, a laser has its beam directed to a focusing and scanning system. The resultant beam is directed to a photocathode which is positioned with its semiconductive layer directed toward the beam.

Abstract: A composite buffer layer is formed with a layer of GaAs on a semi-insulating GaAs substrate. Next a short period superlattice is formed followed by another GaAs layer, whereon is formed a first AlGaAs layer having a first mole fraction of Al and a second AlGaAs layer having a second mole fraction of Al higher than the first mole fraction. As intrinsic GaAs channel layer is formed on the second AlGaAs layer.

Abstract: A ridge waveguide laser structure is manufactured by a method including providing a photoresist stripe (8) on an exposed area of a p cap layer (4) of a multilayer laser wafer; etching channels (9) through the cap layer (4) and a p passive layer (3) using the stripe (8) and an oxide layer window (FIG. 4) as a mask; evaporating a passivating and insulating oxide (11, 11a) over the wafer, there being breaks (C) in the oxide where the stripe (8) is undercut during channel etching; and removing the stripe (8) and the oxide (11a) on it by a lift-off technique.

Abstract: In a pulse-density D/A or A/D converter, improved averaging of a pulse-density-modulated (PDM) signal in the presence of a jittering clock signal is achieved by applying the PDM signal to the serial input of an n-stage shift register whose parallel output serves to control n state signals. The shift register is driven by the clock signal. The n state signals are combined into a sum signal which feeds a low-pass filter. In preferred embodiments, the n state signals are weighted and/or isolated from the respective previous state and the following state by means of gate circuits.

Abstract: A connector is provided which retains its contacts in a simple, reliable, and low cost manner, without requiring retaining clips. A housing that holds the contacts includes two insulative layers with aligned contact-receiving holes, the first layer (50 in FIG. 2) formed of rigid material and the second layer (52) formed of elastomeric material. Each contact has a rearwardly-facing first shoulder (66) that engages a first abutment (74) formed in the first rigid layer, to withstand large mating forces as the connector is moved forwardly to mate with another connector. Each contact also has a second forwardly-facing shoulder (72) that engages a second abutment (76) in the second elastomeric layer, to withstand the lower unmating forces. The contact has forward and rearward parts (66, 70), one forming the first shoulder and the other forming the second shoulder.