Abstract: An analog waveform transducing circuit is disclosed which includes a pair of superconductive circuits connected in parallel between a pair of terminals. One of these circuits includes a Josephson tunnelling device and the other includes inductance (which may be distributed) which is greater than the inductance of the Josephson device. An analog signal is applied to one of said terminals. Means are provided for switching said Josephson device between normal and superconductive states to thereby trap one or more flux quanta. An output means is coupled to one of the two circuits.In one embodiment the means for switching the Josephson device responds to the analog signal level only, that is the control current is fixed (or zero). In this embodiment a number of pulses may be produced which can be related to the signal level, so that the circuit is an analog to digital converter.

Abstract: An emulsion of water; a water immiscible liquid including a solution of a liquid nonpolar hydrocarbon and a liquid halogenated aliphatic hydrocarbon; and a colloidal suspension of magnetic particles and a surface active agent.

Abstract: Streams of ink droplets are formed of a material which changes from transparent or colorless to a color when subjected to a selected energy source. A print pattern is produced on a movable paper through selectively controlling the droplets to which the selected energy source is applied. The droplets which remain transparent or colorless because of not being exposed to the selected energy source can be deactivated by a second source of energy so that these droplets will not subsequently print.

Abstract: An improved light pen is provided for a gas display panel of the type in which an alternating polarity sustain voltage produces a succession of brief light flashes in a matrix of light emitting cells. The timing for the sustain voltage is disturbed along a selected coordinate of the matrix. The coordinate of a light pen is identified when light with this disturbed timing is detected by the pen. Circuits for disturbing the sustain voltage of an individual cell of the matrix are also disclosed.

Abstract: An integrated circuit substrate surface, particularly a surface of electrically insulative material, having a pattern of elevated areas and a complementary pattern of unelevated areas is planarized by forming the photoresist pattern in registration with the pattern of unelevated areas, the photoresist pattern having narrower lateral dimensions than said elevated pattern whereby registration is facilitated, flowing the photoresist pattern to laterally expand the photoresist to cover and thereby mask the unelevated areas, and etching to lower the elevated areas which remain uncovered by the photoresist.

Abstract: This patent discloses apparatus for retaining a semiconductor wafer in a predetermined position or orientation to permit dicing of the wafer into discrete semiconductor chips of a predetermined size without dislocation of the chips during the dicing operation, the chips being arranged in columns and rows with a kerf area intermediate adjacent chips. The apparatus comprises a base member having a semicondcutor wafer positioning area with a connection to the base member for applying the vacuum to a plurality of spaced apart apertures in the wafer receiving area, the apertures corresponding to the location of the chips.

Abstract: An integrated circuit structure with full dielectric isolation, i.e., the electrical isolation is provided by electrically insulative material, is formed by ion bombarding a silicon substrate with ions such as nitrogen, oxygen or carbon to implant subsurface region containing such ions and heating the resulted bombarded substrate to a temperature sufficient to react the introduced ions with the substrate to form a subsurface layer which has a different etchability than silicon. An epitaxial layer of monocrystalline silicon is then deposited on the substrate, after which a pattern of regions of electrically insulating material is formed extending through the epitaxial layer beyond the substrate surface into contact with the subsurface layer to laterally surround a plurality of pockets in said silicon. An electrically insulative layer is formed on the surface of the epitaxial layer continuous with the electrically insulating lateral regions.

Abstract: This specification describes a programmable logic array (PLA) in which the readout table or OR array for the PLA is broken into two segments and the segments placed on opposite sides of the search table or AND array for the PLA. The output lines for the AND array can then be split so that outputs on one segment of those lines are fed to the OR array on one side and outputs on the other portion of those lines are fed to the OR array on the opposite side. Likewise the output lines in the OR arrays can be broken so that different functions can be fed out to opposite sides of the OR arrays. It is also possible to break input lines in both the OR and AND arrays to isolate functions from one another.

Abstract: Method for depositing a layer containing Al; N, and Si on a substrate which comprises providing a substrate to be coated, a carrier gas, and a gaseous mixture of nitrogen source compounds, aluminum source compounds and silicon source material and heating the substrate to a temperature in the range of about 500.degree. to about 1,300.degree. C to thereby cause formation on the substrate of a layer containing Al, N, and Si; and products obtained by the method.

Abstract: In the fabrication of integrated circuits, a method is provided for forming dielectrically isolated regions in the silicon substrate comprising selectively etching recesses in a silicon substrate and thermally oxidizing the recessed portions of the silicon substrate to form regions of recessed silicon dioxide extending into the substrate. Then, a blanket introduction of impurities of opposite-type conductivity is made into the portions of the substrate remaining unoxidized, after which a layer of silicon of said opposite-type conductivity is epitaxially deposited on the substrate surface. Next, utilizing appropriate silicon nitride masking, recesses are etched into the silicon epitaxial layer in registration with the now buried regions of recessed silicon dioxide in the substrate.

Abstract: An anodizing process includes depositing a first conductive layer on a dielectric layer; depositing a porous metal oxide-forming layer on the first conductive layer; anodizing the porous metal oxide-forming layer to provide porous anodized material; treating the first conductive layer to render it non-conductive. The process and articles fabricated thereby are especially suitable for use in multilevel metallurgical structures, and in electronic structures in which it is designed to have planar conductors.

Abstract: A user transaction terminal which may be connected for communication with a large scale data processing system includes a card handling subsystem which receives and transports user information cards; a user communication subsystem which includes a keyboard and an optical display; a hardware control subsystem which operates terminal hardware, a transaction statement subsystem which prints and dispenses written records of user transactions; a terminal communication subsystem which provides communication with a data processing system; a processor support subsystem which assists a control subsystem by performing control functions which are more easily implemented with hardware than software; and a control subsystem which includes a programmed microprocessor which is connected to the other subsystems via an information bus to coordinate and control the operations of the other subsystems. The keyboard includes a plurality of mutually exclusive keyboard fields, each relating to a different type of information.

Abstract: A stream of magnetic ink droplets is directed towards a recording surface and initially passes through a selector, which selects the droplets for application to the recording surface to form characters thereon. Each of the selected droplets passes through first and second magnetic deflectors in which each of the selected droplets is deflected in directions orthogonal to each other and orthogonal to the direction in which the droplets are moving toward the recording surface. Each of the selected droplets is subjected to a magnetic field gradient varying with respect to time during the passage of the droplet through one or both of the magnetic fields depending on the desired position of the droplet on the recording surface relative to the prior droplet.

Abstract: In a buffered printer in which lines of graphic code bytes representing characters to be printed are successively advanced to a line buffer where they are sequentially sampled and the results used to modulate a laser beam undergoing successive scans of a printable medium to effect printing of the characters, an arrangement is provided for determining the size of the lefthand margin of the printable medium and the location adjacent the right-hand edge of the printable medium where printing is to be terminated. The arrangement sums count values representing a fixed offset adjacent the left edge of the printable medium and the distance between the end of the fixed offset and the horizontal location of the desired margin as determined by plural panel mounted switches to provide a first count which is carried out beginning with the start of each scan of the laser beam.

Abstract: A plasma display panel has twin X and twin Y orthogonal drive lines in place of the single X and single Y drive lines of prior art panels. Each pair of twin drive lines are in close proximity and spaced a relatively much greater distance from the next pair. The dielectric layer covering the drive lines is sufficiently thick to cause the voltage potentials on the twin drive lines to image as one potential on the surface of the dielectric. Each one of the twin drive lines is connected to a selection line such that the raising of any two X selection lines and two Y selection lines produces a write-erase potential on a particular gas cell.

Abstract: An improved write waveform is provided for a gas panel of the type in which light emitting cells are formed in an ionizable medium at the cross points of a set of horizontally and vertically extending insulated wires. A write pulse of high amplitude is followed by an opposite polarity pulse of an amplitude and width to produce cell wall charge storage from the ionization that accompanies the fall of the high amplitude write pulse. The invention also provides a method and circuit for reading the state of a cell by applying the high amplitude write pulse to a cell and detecting the difference between the smaller current that occurs at the leading edge of the write pulse for a previously written cell and the larger current for an erased cell.

Abstract: A method of and apparatus for providing single wall self-biased magnetic domains in a film of uniaxial magnetic material. In addition to the conventional uniaxial magnetic film for supporting the single wall domains, a bias film is located adjacent thereto. The material characteristics of the two films and their thicknesses are chosen such that the exchange coupling between the two films provides the effect of an external field for supporting the single wall domains.

Abstract: A coupler for coupling optical energy transmitted by optical fibers to a thin-film optical waveguide and a method of manufacture. In the method an optical fiber is sandwiched between a pair of substrates and the substrates and fiber are bonded together with a suitable material. The bonded product is then cut to provide a surface including a cross section of the fiber. After polishing this surface a thin-film optical waveguide is then provided on the surface including the fiber end. The cutting angle is chosen such that, in the assembled coupler, the exit angle with respect to the waveguide surface is greater than the critical angle of the guide material. In this fashion the optical energy coupled from fiber to guide is trapped in the guide.The apparatus includes an optical fiber in a substrate with a cross section of the fiber in the surface of the substrate with a thin-film optical waveguide overlying the substrate surface.

Abstract: In the fabrication of integrated circuits, a method is provided for forming recessed silicon dioxide isolation in which the "bird's beak" problem associated with conventional silicon dioxide-silicon nitride composite masking structures is minimized. A conventional composite mask comprising a bottom layer of silicon dioxide and an upper layer of silicon nitride having a plurality of openings defining the regions in the silicon substrate which are to be thermally oxidized is formed on the substrate. Recesses are then etched in the silicon substrate in registration with the openings in the composite mask. The silicon dioxide layer should be, in effect, over-etched to extend the openings in the silicon dioxide to greater lateral dimensions than the openings in the silicon nitride layer whereby the silicon nitride layer at the periphery of the openings is undercut.

Abstract: A modular control system is provided for a gas panel of the type having an array of row wires and column wires that form light emitting cells at their crossover points. A row counter and a column counter provide selection signals for entering characters sequentially on the panel. The counters provide borrow and carry signals to components that control the display. Thus, the control operates without regard to the actual size of the display and provides a modular construction for displays of various sizes.