Abstract: A multiple precision multiplication device includes accumulators coupled to the output of an array multiplier. The accumulators store partial products which are then added back into partial products generating during succeeding multiplication steps. The final product is output from the accumulators only after all partial products have been added in.

Abstract: A paper web-moving system includes a friction-type drive roll mechanism cooperatively operating with a detachable tractor drive mechanism. In one embodiment, the paper first passes over and engages a pair of driven tractors at an angle with respect to the horizontal, then under a driven roller platen and between two spaced apart sets of rollers positioned to force the paper against the roller platen. The drive mechanisms are configured so that the paper drive rate of the roller platen is greater than the drive rate of the tractor, causing paper tension therebetween. The present system permits the use of friction roll paper, tractor fan fold paper, and single sheets with a short tear-off capability.

Abstract: An array processor operating in the forced I/O mode includes a master controller (12) for generating sequenced commands for output to slave address generators (52) (54) and (62). The slave (52) and (54) operate in a data processing and a forced I/O mode. Each of the slaves have a set of data instructions and a set of I/O instructions therein. The data instructions are sequenced through in accordance with the sequenced commands generated by the master controller (12) synchronously and in parallel with the other slaves to generate addresses for memories (76) and (80). The master controller (12) initiates the I/O mode with runs independent and asychronously with respect to the sequenced commands to interface with an external I/O device (98). This data is transferred to the associated data memory and, when full, the operation alternates such that the other slave is in the I/O mode and the other data memory is utilized for storing I/O data.

Abstract: A method for routing user packets in a multinode interconnect network is disclosed. Each packet has a destination node (10). Each node (10) is connected by input and output lines (12) and has a plurality of packet storage links (34) and (56-60). Each link (34) and (56-60) is connected to an input line (18-24) and has a number of packet storage buffers (38-44) and is connectable to any of the node's output lines (26-32). During operation node (10) uses a set of routing instructions and a look-up table (192) to determine which user packets are sent out on which output lines (26-32). The routing rules determine which output line is connected to the shortest path to the destination node, and ensure that the node (10) will always have an empty storage buffer (38-44) for each input line (18-24) for receiving further user packets.

Abstract: An apparatus and method for locating a pattern within a digital representation of an image. A video camera scans an image of light reflected from the surface of an object. The analog output of the video camera is digitized to form the digital representation. In order to digitize the analog output a threshold signal is provided. A comparator receives both the threshold signal and the analog output. When the difference between the threshold signal and analog exceeds a certain value the comparator changes its output from one digital level to another until the difference is less than the certain value. The threshold signal is produced by an adaptive threshold circuit which integrates the analog output over one scan of the image to form an integrated signal. This integrated signal is the normalized and stored into a sample and hold circuit for use in a subsequent scan as the threshold signal.

Abstract: A current to frequency converter having an operational amplifier with two inputs, an output, and a feedback capacitor connected between one input and the output to produce an output voltage waveform having a rate of change proportional to the input current between a first and second predetermined voltages. A level detector and active switching devices to detect the second predetermined voltage level and reset the voltage level of the waveform to the first predetermined voltage level. The level detector produces an output signal when the second voltage level is reached. The output signals form a digital pulse stream having a frequency proportional to the input current.

Abstract: An apparatus and method of photolithography with phase conjugate optics having a pump nonlinear medium for producing four way mixing of a beam of coherent electromagnetic radiation incident to said nonlinear medium with a spatically modulated representation of image thereon. The nonlinear medium producing by the phenomenon of four way mixing. A phase conjugated beam having a representation of the image spatically amplitude modulated thereon. The phase conjugated beam is directed toward a surface sensitive to electromagnetic radiation.

Abstract: A carrier having a plurality of leads extending from the lateral sides thereof. The leads extending along the lateral side and over protuberances into depressions in the bottom of the carrier. Each of the depressions is separated by ribs from the other depressions. The ends of the leads disposed in the depressions are prevented from substantial movement by the rib to prevent contact with adjacent leads. At least some of the leads are provided with holes disposed adjacent to the exit of the leads from the enclosure of the carrier. The holes in the leads allow the leads greater flexibility at their portions close to the entrance of the leads into the enclosure. The leads are tapered along their length toward the protuberances. Further, the leads are separated by a width along the lateral side which is within the range of slightly greater than the width of the leads to less than the width of the leads to prevent nesting.

Abstract: A carrier having a plurality of leads extending from the lateral sides thereof. The leads extend along the lateral side and over protuberances into depressions in the bottom of the carrier. Each of the depressions is separated by ribs from the other depressions. The ends of the leads disposed in the depressions are prevented from substantial movement by the rib to prevent contact with adjacent leads. At least some of the leads are provided with holes disposed adjacent to the exit of the leads from the enclosure of the carrier. The holes in the leads allow the leads greater flexibility at their portions close to the entrance of the leads into the enclosure. The leads are tapered along their length toward the protuberances. Further, the leads are separated by a width along the lateral side which is within the range of substantially the width of the leads to less than the width of the leads to prevent nesting.

Abstract: Apparatus and method for cleaning material at the outer edge of an object by applying a fluid, which can be a solvent, for the material to a flat surface adjacent the edge by contact and moving the solvent onto the edge by centrifugal force. A slot is provided in a planar surface. The slot is filled with solvent for contact with the flat surface of the object. The slot is arcuate and elongated. The fluid is directed along the slot in the direction of rotation by a baffle. The slot has a bottom sloping upward toward the planar surface in the direction of rotation. A notch is provided between an edge of the planar surface and the slot to act as a spillway for excess solvent.

Abstract: Apparatus and method for cleaning material at the outer edge of an object by applying a fluid, which can be a solvent, for the material to a flat surface adjacent the edge by contact and moving the solvent onto the edge by centrifugal force. A slot is provided in a planar surface. The slot is filled with solvent for contact with the flat surface of the object.

Abstract: An apparatus having a reservoir for enclosing a fluid and a valve for selectively applying gas under pressure to said reservoir and venting said reservoir to the ambient air. A controller supplies a pulse of predetermined duration selected from a plurality of durations to actuate the valve to apply the gas under pressure to the reservoir for expelling a predetermined amount of ink therefrom through a tube by compensation for dynamic effects. The ink is transferred from one end of the tube to a selected item of a sheet of items by moving the end of the tube closely adjacent to the sheet while the ink is being expelled from the reservoir and through the tube for transfer to the individual item.

Abstract: An apparatus and method of forming aluminum balls utilized for ball bonding. The aluminum balls are formed in a moist argon atmosphere by applying an electrical potential across a spark gap causing a spark to occur which causes the end of the aluminum wire to melt, forming an aluminum ball.

Abstract: A semiconductor device and method of manufacture employs an improved insulating layer to laterally separate conductive layers or regions. A relatively thick insulating layer is anisotropically patterned to form an electrode having a thick insulating layer on its side walls. Subsequently defined conductive regions are separated from the electrode by a distance determined by the thickness of the insulating layer. In devices requiring multiple level polycrystalline silicon electrodes, shorts between electrodes are reduced; in MOS devices, operating parameters are improved due to decreased overlap of the gate electrode over the source or drain region, decreased contamination of the gate electrode during manufacture, and more uniform gate oxide definition along the active channel between the source and drain.

Abstract: An annunciator is disclosed which has an improved charging circuit for storing the energy of a ring signal received via an improved Schottky diode bridge rectifier, and an oscillator-driven variable divider which actuates an audible output device when the stored charge exceeds a threshold level.

Abstract: A temperature compensated, phase tolerant sense amplifier for use in a magnetic bubble memory system in which current is applied to the detector resistors only during a bubble detect operation.

Abstract: A beam separating prism system for an imaging system having two pairs of prisms, each prism having a 30, 60, and 90 degree triangular cross section and being provided with a partially reflecting region situated between the common boundary of the pair. A nonreflecting entry surface of one pair receives light which is both not focused and not parallel as reflected from a document. The light received at the entry surface is separated into three light components by the prism system. The exit axes of two light components are parallel and the exit axis of the third light component is at an angle of approximately 60 degrees to the other exit axes. The light is received by the pair of prisms having the entry surface and intercepted by the partially reflecting region of the pair. The remaining light is transmitted by the partially reflecting region to form a first component which is then reflected along an exit axis.

Abstract: A strapping apparatus for applying a thermoplastic strap about an object by placing an end of the strap away from a supply thereof against the object and wrapping the portion of the strap adjacent that end about the object by rotating the object. Tensioning means is provided to pull the strap tightly about the object as the object is rotated by a platen. A clamp is located adjacent the platen to hold the object engaged with the platen as the platen is rotated in a first rotary direction. A cutting and sealing tool moves against a portion of the strap which is overlapped forming two layers of strap. The tool applies heat to the thermal plastic strap to soften the strap cutting away the portion of the strap toward the supply and sealing a segment of the overlapping portion together. The platen is then derotated in a second rotary direction opposite to the first rotary direction and the clamp means loosened so that the object which is wrapped with the strap falls from the platen.

Abstract: An ink composition for utilization in ink jet printing comprising an aqueous solution of a fluorescent pigment, a dye solubilizer, and butyl carbitol. The composition is nonflammable and has a relatively stable viscosity.

Abstract: In an electronic component manufacturing system, slices are transported in serial fashion between a plurality of work stations. As the slices move through the system, each work station performs a separate manufacturing operation on each slice. The manufacturing operations are performed in immediate succession and within the same time interval so that the slices are processed rapidly and so that slices do not accumulate between the work stations. The slices are maintained in sequence through the system so that the operation of the system is more easily controlled.