Abstract: A data storage cell is provided for use when concatenated with similar cells in a wafer-scale integrated circuit as part of a serial memory chain. Data is stored in or retrieved from a shift register. A data switch is operable, dependently upon a selectable match criterion being met between the successive contents of a key word register and selectable sections of the data stored in register, the particular sections so selected being controlled by the contents of a control register. The access control is such that records are selectively stored in, or retrieved from, a particular cell dependent upon the content of the records themselves thus removing the necessity for keeping track of the position of records in the serial memory chain. The switch is selectably operable to provide a copy of the circulating contents of the data storage register as the signal on a data output line of the cell, so providing a means for non-destructive readout from the cell.

Abstract: The mounting assembly of the present disclosure finds particular application in shielded electrical cable having connectors at opposite extremities thereof and carrying electrical conductors between spaced-apart equipments having respective mating connectors. In accordance with the disclosure, a mounting assembly is provided which may be disposed at either extremity of the cable, or at both extremities, and which permits the cable connectors to rotate through a prescribed arc about the cable axis. This rotation compensates for the torsional inflexibility of the cable, thereby facilitating the orientation of the mating connectors required for attachment, and electrically linking the equipments.

Abstract: In an autoteller, where a card is inserted into a slot to be read by the autoteller, and remains visible at all times by means of an indentation in the slot whereby the card can also be grasped, a cam operated bale arm assembly prevents the card from being removed from the slot by interposing the tips of bale arm behind the fascia of the autoteller between the card and the slot. A bale arm clamp is provided for holding the bale arm assembly closed for the card to be pushed into a retention bin transversely to its direction of insertion into the autoteller by means of a drive wheel driven card ejection pin in the event of the autoteller desiring to retain the card. The bale arm assembly performs a dual action, both preventing the removal of the card and drawing the card into a predetermined position prior to the card being read. The clamp maintains the bale arm assembly in a removal-preventing position even although the cam operating mechanism is de-activated.

Abstract: A re-programmable logic array is disclosed which has an AND array disposed for receiving n input signals on n rows of m cells per row, and an OR array providing k output lines on k rows of m cells per row. The AND and OR arrays are coupled together by m term lines. Each of the rows of the AND and OR arrays include shift register means of m charge storage elements having an input terminal coupled to the first of the m charge storage elements and an output terminal coupled to the mth one of the m charge storage elements. Multiplexors are coupled to each of the rows of both the AND and OR arrays to select between a programming operation and a recirculating refresh operation.

Abstract: In a disc data store, wherein a read/write head is radially positionable by a feedback servomechanism to interact with a selectable one out of a plurality of radially equispaced data storage tracks on a rotary disc, the positioning errors resultant from phase errors between the plural signals available as the output of an optical grating head position transducer are eliminated by replacing one of the data storage tracks with a servo track by arranging that the period of the recursive, triangular wave position indicating signals from the transducer is equal to twice the radial spacing between tracks on the disc, by selecting as the exclusively-used position indicating signal that one of the plurality of transducer signals which brings the head to the center of the servo track with least offset, and, while employing that selected signal or its generated inverse as the feedback signal to the servomechanism applying that least offset as a correction when positioning the head over data storage tracks.

Abstract: An optical data storage system is contemplated, one employing a data-modulated writing laser beam and a nonerasing reading laser beam of predetermined wavelength.Improved optical media for such systems are described, these characterized by multiple layers whose optical characteristics and thickness are chosen to accommodate a prescribed writing and reading energy and wavelength and so provide an "anti-friction" condition for unrecorded portions of the medium and a relatively higher reflectivity for recorded portions. A preferred optical medium includes a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer, and an optical absorber (recording) layer overlying the spacer layer.Overcoating structure is specified in some detail; e.g., as a "soft pad" layer (e.g., fluoropolymer) on the absorber, with a "Hard" layer (e.g., radiation-cured acrylic) laid over the "soft pad" as an outer protective overcoat.

Abstract: A bubble memory comprises a substrate with a major surface; a first storage module for storing bubbles on the left side of the surface having parallel inputs and parallel outputs; a second storage module for storing bubbles on the right side of the surface having parallel inputs and parallel outputs; a first input circuit on the left side of the surface including a serial-parallel track along which the bubbles move to the right to enter the parallel inputs of the first storage module; a second input circuit on the right side of the surface including a serial-parallel track along which the bubbles move to the left to enter the parallel inputs of the second storage module; a detector for detecting bubbles disposed equally on the left side and the right side of the surface; a first output circuit on the left side of the surface including a parallel-serial track which receives bubbles from the parallel outputs of the first storage module and moves them to the right to the detector; and a second output circuit on

Abstract: A data-comm network uses multiple line adapters for controlling communication with various data terminals. Each line adapter, and also a data-link interface unit, has its own RAM memory means for buffering of data. An associated microprocessor permits selection of any particular line adapter and its RAM memory means or selection of the data-link-interface unit RAM memory means.

Abstract: A machine for filling a plurality of via holes in a workpiece comprises a hollow member having an open face; a masking member covering the face and having a plurality of holes which are arranged across the face such that they match the via holes in the workpiece; a diaphragm inside of the hollow member having a front surface that forms a first cavity with the masking member for receiving a high viscosity conductive ink and having a back surface that forms a second cavity with the hollow member; a means for holding the workpiece against the masking member such that their respective holes are aligned; and an orifice in the hollow member for introducing a fluid under pressure into the second cavity and against the back surface of the diaphragm to thereby squeeze a portion of the high viscosity ink through the holes of the masking member and into the holes of the workpiece.

Abstract: A servo track position detection system overcomes the measurement errors induced by the use of decoders employing two separate signal measuring circuits where the difference between the outputs of the circuits is indicative of the displacement of a signal-recovering transducer from central disposition over the servo track by using a servo track having opposed pairs of polarity transitions which sum the head to give a head output pulse whose polarity and magnitude are indicative of the distance and sense of displacement of the head from central disposition over the servo track and measured in a simple circuit.

Abstract: A display panel comprising a gas-filled envelope containing an array of rows and columns of D.C. scan/address cells, each scan/address cell including a volume of gas and an anode electrode and a cathode electrode, and an array of rows and columns of display cells, each display cell including a volume of gas and two electrodes, one electrode being in the form of an apertured plate whose apertures are the display cells, the other electrode being an apertured electrode whose apertures are considerably smaller than the apertures in the one electrode and so numerous that the greater portion of the area of the other electrode is light-transmissive whereby the human eye does not see the solid portions of the other electrode which define the apertures therein.

Abstract: Described is a novel method and associated fixture for magnetically attracting and holding back-bar means to respective magnetic core-leg portions of a typical magnetic slider assembly.

Abstract: A method of operating a communication station having two sets of paired input and output terminals which are normally coupled to respective paired sets of terminals in two other stations to form a network includes the steps of: monitoring the input terminal of one set of terminals in the station to detect an idle signal, a delimiter signal, or silence thereon; transmitting the idle signal on the output terminal of the one set if silence is detected by the monitoring step; sending the delimiter signal on the output terminal of the one set if the idle signal is detected by the monitoring step; and coupling internally in the station the input terminal of the one set to an output terminal of the station in a predetermined fashion to permit signals on the input terminal of the one set to pass through the station if the delimiter signal is detected on the input terminal by the monitoring step.

Abstract: A wafer-scale integrated circuit has a plurality of data-processing cells disposed on a semiconductor wafer together with a port for providing communications with a controller. A branched spiral of inter-coupled working cells is grown starting at the port by testing cells and incorporating them into the branched spiral if found to be working, otherwise selecting alternative cells for testing. The growth of the branched spiral is such as to allow for the incorporation of cells trapped in cul-de-sacs. Each cell is operable to receive a unique cell name from the controller and is thereafter operable to respond to commands from the controller bearing its unique cell name to couple firstly to one neighbor and secondly, at any time thereafter, to couple to a further neighboring cell. The controller is provided with means for maintaining records of successful interconnections for later use.

Abstract: A selector is comprised of one input port and two output ports; the input port has N input data lines and each of the output ports has N output data lines; one circuit in the selector selects only one of the two output ports at a time; and another circuit in the selector passes characters from the input port to the selected output port. Each of the characters is represented by active logic signals on M-out-of-N data lines on the input port, with M being at least two and N being greater than M and greater than three.

Abstract: A magnetic bubble memory (of the type that has a magnetic film, a plurality of magnetic bubbles in the film, and an insulating layer over the film) includes an improved electromagnetic structure on the insulating layer for stretching the bubbles to aid in their detection; which structure is comprised of a plurality of elongated permalloy elements on the insulator and arranged in spaced apart rows with only one of the elements per row; each element has a pattern that is X-shaped which repeats along the element in the direction of elongation; the X in the pattern has two short legs and two long legs; and the pattern is repeated such that the short legs of one X join with the long legs of the next X.

Abstract: A toner concentration sensor senses the concentration of toner in the toner system of an electro-photographic printer or copier. A novel circuit improves the toner concentration sensor. The novel circuit is composed of a resonant circuit, a frequency source, and a logic circuit. The resonant circuit is tuned to a selected frequency and has an inductor which creates a field into which the toner system is introduced. A frequency source excites the resonant circuit. A logic circuit receives a signal from the frequency source and an output from the resonant circuit. The logic circuit output is a signal representative of the phase shift between the signal from the frequency source and the output of the resonant circuit. The phase shift is representative of the inductance of the inductor in the presence of said toner system. The measurement of the inductance is representative of the concentration of toner in said toner system.

Abstract: An electro-optical imaging system uses a charge-coupled bucket-brigade photo-sensitive image convertor where the necessity for light shielded shift registers and other measures for preventing the acquisition of additional incident-light induced charge by light-representative electrical charge packets as they pass to the output port of the convertor is removed by the use of a liquid crystal light transmission cell which can be made transparent for the acquisition of charge by the convertor and opaque for the shifting of the charges to the output port. The convertor can thus be made simpler and of smaller area to give a lower cost and higher production yield. The convertor is given an apparently increased spatial resolution by providing that the cell allows sub-areas of the total image to be transmitted one-by-one to the convertor by the sequential operation of four sub-cells of the main cell such that each sub-cell becomes transparent and has its through-passing image converted in turn.

Abstract: A data communications controller, for use intermediately between a data processor and a data communications link such as a modem driven land line, relieves the data processor of time-consuming supervisory and data preparation tasks, normally associated with the use of a data link, by means of a block loadable transmit queue, an automatic cyclic redundancy check generator, an automatic time fill generator and a parity generator, a block unloadable receive queue, an automatic character translator, an automatic character monitor and a received serial bit queue in conjunction with a byte synchronizing detector, the operation or non-operation of each of the above elements and, if operational, the manner of that operation, being selectable by commands from the data processor, the commands from the data processor being intermingled with but distinguishable from data to be sent over the data link.

Abstract: The disclosure is of a display panel, known as a bar graph and used for displaying bars of light of varying length. The panel includes an anode and a series of cathode bars, the cathodes being connected in three phases of groups which are formed by a trifilar winding on an insulating base plate. The anode for the panel may be formed on the face plate which is hermetically sealed to the base plate to form a gas-tight envelope which is filled with an ionizable gas.The principles of the invention can be used to make other types of panels having electrodes connected in groups.