Abstract: A high performance sense amplifier that is preferably fabricated from complementary metal oxide semiconductor field effect transistors (CMOSFETs) and is especially suited for applications in a radiation hardened environment. The sense amplifier of the present invention is characterized by high sensitivity, high gain, good noise immunity, low power dissipation, fast operation, relatively small geometrical size, and good stabilization for temperature and supply effects while providing self-compensation for non-uniformities of electrical parameters which may occur as the result of MOS device processing or exposure to a nuclear radiation event.

Abstract: A reliable voltage level shifter circuit implemented with complementary metal oxide semiconductor field effect transistor (MOSFET) devices, suitable for high voltage applications. The disclosed circuit is relatively unsusceptible to low voltage transistor breakdown, whereby a wide range output voltage swing is achieved.

Abstract: A device for displaying a number of lines of characters which are separated from each other by spacing lines on a television tube, comprising a circulating store for one line of characters which is connected to the output of a buffer store for the information of the entire image. An output of the circulating store is fed back to an input of the buffer store. The insertion and deletion of characters is effected by shifting the information between buffer store and circulating store over one or more character positions. Under the control of the correspondence signals from x, y cursor device, the input of the buffer store is then switched over from its own output to the output of the circulating store, with the result that the information in the buffer store is shifted. A vacant position thus produced is available for a new character.

Abstract: A display arrangement including a source of polarized radiation; a magnetic material capable of supporting magnetic bubble domains in the path of the polarized beam, for producing a modulated beam; a device for representing an image encoded signal by means of the magnetic bubble domains; and a display device in the path of the modulated polarized beam for providing a visual display of the encoded image.

Abstract: An automatic machine including a two-dimensional positioning table, a device for measuring the dispositions attained by the table in each of said dimensions and a tool holder having an operative center in respect to said two dimensions. Furthermore means are provided for imaging a graticule means to an operative plane of the table so that the center of said image is substantially aligned with the operative center of the tool holder. A visual input device is positioned to view a part of said operative plane including said graticule image and comprises pattern recognition apparatus for:(a) identifying a predetermined mark on a flat surface of an object carried by said table, said flat surface lying in said operative plane,(b) identifying said graticule image, and(c) measuring the separation of said mark from said graticule image center.

Abstract: A semiconductor device including a substrate of first conductivity type provided with an epitaxial region of the opposite conductivity type. The base of a first vertical bipolar transistor is formed by a localized epitaxial layer present above the first region, the collector of the transistor and the base of a second vertical bipolar transistor adjoining each other in the region.

Abstract: An integrated circuit memory array having a plurality of memory cells including two cross-coupled transistors of one conductivity type, load transistors of the other conductivity type, and a bit line, connected to the base region of one of the cross-coupled transistors through a bit line transistor. The array features a common node, directly interconnecting all of the base regions of the load transistors and the emitter regions of the cross-coupled transistors, for each of the memory cells; and a row selection line connected to the emitter regions of the load transistors in an associated row of memory cells.

Abstract: A ground proximity warning system used by aircraft when unsafe flight configurations defined by specified flight warning mode envelopes are detected. The invention provides that alarm generation signals are not immediately given, but instead the continuing flight of the aircraft is monitored by an alarm filtering system. The filtering system uses independently variable maximum and minimum threshold levels, and filtering constants which can be incremented and or decremented as functions of the flight location of the aircraft and the specific warning mode envelope for suppressing false or unnecessary alarm generation. The filtering parameters may be varied independently for each flight warning mode. In addition, a priority-ordered series of audio warnings are provided so that warnings once started are completed in the absence of higher priority warnings, even if the warning conditions cease to exist.

Abstract: A closed frame single turn potentiometer incorporating a helical coil spring wiper mounted within a rotor. The rotor has a molded-in cavity for containing the wiper and a resilient backing element. The substrate has an aperture therein permitting adjustment of the rotor from either side of the housing.

Abstract: A saving in column memory elements while preserving a stable display with a gas discharge television display device is obtained if a plurality of bits of the digital video information which is entered in the line trace period is passed from the line memory circuit to the relevant column electrode in the line blanking period while bypassing a column memory circuit. The display elements are excited only once during a line period at the beginning of the line period.

Abstract: Digital signal processing arrangement such as a digital filter for computing output signal samples which are each equal to the sum of products of a given plurality of pairs (for example N) of input signal samples. One of the input signal samples of the pair is, for example, formed each time by a sample x(n) of a digital signal to be filtered, the other input signal sample of the pair by a filter coefficient z(n), wherein either the sample x(n) or the filter coefficient z(n) can assume only a limited number of values 0, .+-.A.sub.1, .+-.A.sub.2, . . . .+-.A.sub.M, M being much smaller than N. In the case x(n) can assume only this limited number of values, z(n) is first multiplied, owing to the x(n) belonging to the pair, by the sign of x(n) for generating a product of the form z(n). sgn [x(n)]. In-dependent of the magnitude of n(n) this product is applied to an accumulator which corresponds with this magnitude of x(n).

Abstract: A method of manufacturing a passive hermetically sealed electronic component having a coupling element of soft alloy material between the component element and the leads for providing strain relief. The component element is composed of a passive element having coated ends composed of a refractory metallic material for providing reliable electrical and mechanical connection to the coupling element.

Abstract: A hysteresis threshold circuit including two complementary transistors and an output transistor with an injector controlled by the collector of the second complementary transistor. The emitters of the second transistor and of the output transistor are interconnected, while the input of the circuit is constituted by the emitter of the first complementary transistor.

Abstract: A refreshing organization for use in a main memory with dynamic information storage. In the case of a memory matrix, for example, each row of bit positions is addressed by first sub-address signals, with the result that a refreshing operation is performed for the complete information of the relevant row. Within a row, each bit position is addressed by second sub-address signals. A second memory is provided which includes one word position for each bit row of the main memory. The second memory has a comparatively short memory cycle. During the first half of the "slow" memory cycle, a word of the second memory is addressed by the first sub-address signals and is filled with predetermined information. During the second half of the "slow" memory cycle, a next word of the second memory is addressed during each cycle by the position of an address counter. The stored word which is addressed is then read. The output register is constructed as a counter; the information read is increased by 1 and is written back.

Abstract: An I.sup.2 L circuit comprising plural stages connected in series across a supply voltage. In order to reduce the turn-off time of a switching transistor in a lower stage actuated by a signal from a higher stage, a current mirror is coupled to the base of the switching transistor.

Abstract: A resistance material consisting of a mixture of metal oxide and/or metal oxidic compounds and any metals with a binder, which material comprises a metal rhodate of the type M.sub.3 Rh.sub.7 O.sub.15, by way of resistance determining component. This material has a small negative TCR which is substantially constant in a large temperature range.

Abstract: The invention relates to a readout unit for reading out and displaying at a magnification on a picture screen a fraction of the data stored in a random-access memory consisting of N .times. N simultaneously accessible submemories. The number of picture elements representing the data to be displayed is multiplied until the total number of picture elements required for the display of a picture line is obtained, while the number of picture lines is multiplied until the total number required for presentation on the entire picture screen is reached.

Abstract: A digital-to-analog converter using a combined pulse rate and pulse width modulation of an output signal of a circuit for providing a digital signal to be converted to a periodically occurring series of digital comparison signals to be obtained by a proper choice of a particular series. The digital-to-analog converter has a very small error which, due to its low temperature sensitivity, is particularly suitable for tuning circuits of television receivers.

Abstract: A digital signal processing arrangement including a wave digital filter having quantizing means for limiting the signal waves present to a predetermined word length by means of controlled rounding. "Controlled rounding" means that a limit-cycle-free output signal is obtained when a constant input signal is present. If the outgoing signal waves from the N-port adaptor are equal to b.sub.o (j,k), and the signal waves applied to the adaptor are equal to a(j,k), b(j,k) is equal the desired and quantized value of b.sub.o (j,k), where j represents the number of the port, then the process of controlled rounding quantizes b.sub.o (j,k) in such a way that ##EQU1## Here the c(i,j) represent constant coefficients, and r the number of independent information signal waves.

Abstract: A contact device for trimmer potentiometer including a helical coil spring wiper embedded in a cavity in an insulative body so that movement of the helical coil spring wiper is prevented as the contact device is moved along the potentiometer substrate. The insulative body may alternatively be provided with thin walls surrounding the cavity containing the helical coil spring wiper to permit the contact device to absorb backlash, while still preventing any relative movement of the helical coil spring wiper.