Abstract: Improved performance of an electronically scanned subarray antenna system is realized by tailoring the subarray pattern in a manner that reduces the undesirable effects of illumination truncation at the edge of the main array. This is accomplished by introducing variable attenuators into individual feed elements to effect an illumination intensity taper of the feed element array output. The improvement permits effective utilization of deterministic and adaptive nulling at both the main array and the subarray levels and further provides a system ability to scan over wide spatial angles with wide bandwidths and low sidelobes. The technique is adaptable to both space fed and constrained subarray antenna systems.

Abstract: This invention relates to radio antennae, and in particular to dielectric-clad antennae of the kind comprising a length of conductor the electrical length of which is effectively increased by a cladding of dielectric material. The disclosure describes how the physical height of an antenna, typically an HF or VHF wire monopole antenna can be reduced in relation to its electrical length by means of a thin cladding of dielectric material having a relative magnetic permeability substantially greater than unity, e.g. ferrite. By selecting a material having a relative magnetic permeability substantially greater than its relative dielectric permittivity, a given reduction in antenna height can be achieved with a much thinner cladding than can be achieved using conventional materials.

Abstract: A thermal array protection method and apparatus are disclosed primarily for use in linear thermal array imaging devices. Data to be printed within a given line of data are compared to the data printed within the previous line of data. Data will not print in the given line of data if data were printed in the corresponding data positions within the previous line of data. Thus, the temperature of the individual thermal imaging stylii will be kept within acceptable limits.

Abstract: A particle feed arrangement for applying solid particles contained in a particle storage tank to an image carrier of a non-impact printer. The arrangement includes a conveying member disposed to pass within a particle supply source to feed the particles to the vicinity of a surface of the carrier. A deflector is interposed between the carrier and the conveying member to collect the particles conveyed by the member. The deflector has one of its edges arranged in the immediate vicinity of the said carrier to form, in conjunction with the carrier, a trough of generally prismatic shape in which the particles so collected accumulate. The other edge of the deflector, which is formed by a rectangular plate, is virtually in contact with the surface of a particle conveying member to cause the particles to be collected in the trough.

Abstract: In a continuous type ink jet printer having a conventional charging electrode for charging ink drops in accordance with a signal to be recorded on a record receiving media, a pair of deflection electrodes is mounted in a rocker which pivots on a holder mounted on the carrier. As the carrier is accelerated from the stop condition to print speed, the acceleration of the carrier effects rotation of the rocker about the pivot and thus automatic tilt of the deflection electrodes backward from the direction of carrier movement thereby tilting or inclining the electric field formed between the electrodes to compensate for carrier movement. In the preferred form, a simple magnetic type latch is applied to retain the rocker in one position for printing in a first direction, and to enable quick release and reversal, under inertial control, when the carrier moves in the opposite direction.

Abstract: A method and apparatus for removing heavy metal impurities such as gold, silver, nickel and copper from a crystalline substrate is described incorporating a damaged crystalline layer which may be formed by excessive doping to trap or getter heavy metal impurities to enhance the majority carrier lifetime of the detector material.The invention overcomes the problem of degraded responsivity in radiant energy crystalline detectors after high temperature processing, in excess of 900.degree. C., which permits surface contaminants such as gold, silver, nickel and copper to diffuse through the detector material raising the net donor density.

Abstract: CCD imagers of the field transfer type which include a surface channel A register and a buried channel C register.

Abstract: A semiconductor memory of the static type employs a pair of cross-coupled driver transistors which are formed by a method which results in field oxide over the source and drain regions of the MOS transistors. Access transistors are formed by a different method and have silicon gates self-aligned with their source and drain diffusions. The load devices are punch-through elements resembling short channel transistors without gates. These features permit a cell layout with a minimum of space used for the cross-coupling connections, and the polysilicon address line can cross over the ground line, producing a very small cell size.

Abstract: A semiconductor memory of the static type employs a pair of cross-coupled driver transistors which are formed by a method which results in field oxide over the source and drain regions. Access transistors are formed by a different method and have silicon gates self-aligned with their source and drain diffusions. The load devices are ion-implanted polycrystalline silicon strips which overlie the driver transistors. These features permit a very small cell layout with a minimum of space used for the cross-coupling connections, and the polysilicon address line can cross over the ground line.

Abstract: The switching matrix with a plurality of individual lateral type PNPN type switching elements is disposed on a one chip silicon. The chip includes a double layered substrate having a thin P type layer with low impurity concentration epitaxial-grown on a P.sup.+ type layer with high impurity concentration and an N type layer with low impurity concentration epitaxially grown on the P type layer. The substrate has a low resistance. An N.sup.+ type buried layer with high impurity concentration is diffused into the junction between the P type layer and the N type layer at the location where the switching element is to be disposed. The switching element is formed in the N type layer right above the N.sup.+ type buried layer. P.sup.+ type isolation region with high impurity concentration is diffused into the N type layer, not contacting the N.sup.+ type buried layer but the substrate P type layer and enclosing the N type gate region of the switching element. At this time, between adjacent P.sup.

Abstract: Principal faces of semiconductor devices (19) are bonded by means of a bond layer (17) on one face (lower face) of a heat-resistive flexible synthetic resin film (8, 16), for example, polyimide film, the other face (upper face) of the heat-resistive flexible synthetic resin film (8, 16) has bonded wiring conductor films (22) of a specified wiring pattern, and specified parts of electrode metal layers (20) or specified regions (66, 67) on the principal face of the semiconductor devices (19) and specified parts of the wiring conductor films (22) on the resin film (8, 16) are connected by conductor films (22) formed extending between them through through-holes with sloped wall (18, 18a, 32) formed on the resin film (18, 16). Also, a thin reinforcing frame (24) of a metal film, formed on said one (lower) face of the resin film (8, 16) with a specified pattern, may be connected to the wiring conductor films (22) through other through-holes (181) with sloped wall.

Abstract: A press pack semiconductor device comprising a semiconductor element having a mesa formed on a main surface thereof, first, second and third electrodes, a supporting plate fixed to the third electrode, a first intermediate plate which is movably attached to the surface of the first electrode and which is thin, a first disc and a second disc respectively electrically connected through the first intermediate plate to the first electrode and through the supporting plate to the third electrode and a housing surrounding the semiconductor element. The first intermediate plate protects the semiconductor element from being subjected to great stress.

Abstract: A multi-chip module is provided having one or more cylinders formed in the module cap, each centered over the middle chip of a group of chips. Cooling fins are attached to and extend from each of the cylinders. A heat conductive piston is located in each of the cylinders forming a small interface between the piston and the cylinders and the piston and the middle chip. The heat conductive piston is spring loaded against the chips. A heat conductive conformal surface flange extends radially from the outer end of each of the pistons so as to have portions thereof contacting adjacent chips in the group of chips, thereby providing parallel conduction cooling from the adjacent chips to the central heat conductive piston. Heat conductive spring means are included between the module caps and the flange for providing a seating force of the flange against the chips and providing an additional heat transfer path from the chip.

Abstract: To simplify television cameras, particularly of the type previously disclosed in U.S. Pat. No. 4,163,247, Bock et al, the green (or white) content of an image and the red/blue content of an image are transduced by two-dimensional semiconductor sensors which include read-out and storage sections, the read-out being controlled by shift registers which, in turn, operate under control of a clock generator. The luminance of the signal is derived by reading out the luminance portion during the line scanning interval and the thus read out signal is immediately re-stored in the storage portion of the luminance transducer; the chrominance signal is read out from the chrominance sensor during the line blanking interval; during this interval, the re-stored luminance portion is likewise read out and combined with the chrominance portion to form a difference signal.

Abstract: Abnormal separation detecting circuit of chromatic signals transmitted by a SECAM system comprises a detection circuit which receives a chromatic signal made up of R-Y signals and B-Y signals respectively added with identification signals I.sub.1 and I.sub.2 at their front ends for detecting the identification signals I.sub.1 and I.sub.

Abstract: A color image pickup system for a color television system comprises a single image pickup device, a color filter mounted in front of the screen of said image pickup device, said color filter having an array of the repetition of a pair of horizontal colored belts or scanning lines, the first scanning line having an arrangement of cells of the three elementary colors, the second scanning line having an arrangement of the complementary elementary colors to those of the first scanning line. Thus, the colors of each pair of cells in the vertical direction of the two scanning lines are complementary. The output of the image pickup device is processed by adding the signals of the first scanning line and the second scanning line for every vertical cell to provide a brightness signal(Y). As a color signal, only the first scanning line is selected and a pair of color cells (red and blue) are sampled.

Abstract: A solid-state color imaging device is provided including a plurality of photosensors which are arrayed in horizontal and vertical directions, and a mosaic color filter made up of filter elements arranged in correspondence with the respective photosensors. The mosaic color filter is arranged such that any group of four adjacent filter elements comprises a first filter which is made for panchromatic transmission, a second filter which is selected from among a first spectral region-transmitting filter, a second spectral region-transmitting filter and a third spectral region-transmitting filter respectively exhibiting different transmission characteristics, and third and fourth filters which are made of complementary color filters which transmit the transmission light component of the second filter and which have transmission components different from each other.

Abstract: An electronic timepiece having both an electro-optical time display and time indicating hands, and means for setting both the electro-optical display and the hands to display an identical initial time value and to be thereafter advanced in synchronism with each other.

Abstract: A wide angle television display system consisting of a plane annular input - circular (preferably spherical) output optical system, a cathode ray tube or similar device for generating the display and a deflection signal (voltage or current) generator which causes the displayed light spot which forms the scanning lines of the display to progress at a constant spherical-angular speed.

Abstract: A television camera, scanner and amplifier all in water proof housings which are close to one another and in tandem. The camera has illuminating lamps coupled to it arranged to illuminate a space forwardly of the lens. An elongate television cable couples the scanner to a television readout screen. The housings are arranged so that they can be moved through a bend or a tee of a standard four inch salt-glazed sewer pipe.

Abstract: Optical simulation apparatus using a video target image superimposed upon an appropriately blanked-out film transparency of background is used to train an observer in target tracking. The apparatus also includes means to occult all or a portion of the target image presented to the trainee by an appropriate foreground image.

Abstract: An inspection apparatus for inspecting an object is disclosed, in which an object to be inspected and/or a reference body are picked up by an image sensing device such as a television camera and an output video signal from the television camera is processed by a video signal processing circuit. In this case, a reference or calibration body is located within a visual field of the television camera and picked up by the television camera together with said reference body and/or calibration body under the irradiation of light, a signal corresponding to the calibration body included in the video signal from the television camera is detected and this detected signal is used to correct the video signal. The corrected video signal is applied to a computer to judge whether the object is same as the reference body or not.

Abstract: An X-ray fluoroscopy device comprises a television camera for locating the irradiation field. This camera forms an optical image of the object to be irradiated. This image can be displayed on a television monitor, together with an image of the irradiation field, so that the position of the irradiation field within the object can be directly observed.

Abstract: A method for measuring crossview between channels in a wired television broadcasting system is described in which a pseudo random binary pulse sequence signal is applied to a first channel, and the signal on a second channel is correlated with an identical sequence to provide an output representative of the crossview between the first and second channels. This enables crossview measurements to be easily made without interrupting television signals on the channels. The pseudo random binary pulse sequence signal may be applied directly to the first channel or modulated on a carrier for application to the first channel.

Abstract: A switchable synchronizing-signal generator suitable for several television standards, information being supplied from a series arrangement of a clock pulse generator and frequency dividers to a synchronizing signal generator. The generator has a position for the N-standard which is a modified position for the M-standard, because the supply of pulses of double the line frequency to a divide-by-525 dividers is blocked during 50 line periods of each field period.

Abstract: A noise reduction system for a color television signal wherein the television video signal is stored for a period substantially equal to the period of one television frame and the value of the stored signal is compared to the value of a present incoming television signal to produce a frame-to-frame difference signal. A non-linear transmission factor, dependent on the value of the frame-to-frame difference signal, is introduced into said difference signal and the difference signal is then added to the present incoming television signal.

Abstract: TV low cost remote control system using a microprocessor decoder. Control data is transmitted in digitally encoded form and comprises blocks of eight bits of data separated by gaps in transmission of equivalent length. Each data block consists of a start bit followed by seven bits of data for channel identification. Data is presented to the microprocessor on one input line which it samples regularly as a part of its main keyboard scan routine and in response to a start bit checks the data bits and gaps to determine presence of a valid command. The remote control information is decoded directly by the microprocessor. Using seven identification bits, a channel capacity of 128 channels is possible.

Abstract: An optical scanning system comprises a raster scan imager mounted on a support which is rotatable in azimuth, the imager being arranged to provide a line scan which is substantially coplanar with the azimuthal rotational axis and a frame scan which is orthogonal to the line scan, a sensor is provided for monitoring azimuthal rotational rate of the support and a frame scan control means is coupled to the sensor and arranged to provide that the frame scan rate at a field of view is constant and corresponds to a standard T.V. field scan rate irrespective of the azimuthal rotational rate.

Abstract: A non-glare, electromagnetic interference rejecting screen for a video display terminal. The screen comprises a front panel, formed of a transparent material, a rear panel, formed of a transparent material and a woven mesh screen interposed therebetween. A gasket is disposed about the front panel, with peripheral edge portions of the screen extending over the gasket. The screen is mounted on the display terminal so that the wire mesh is interposed between the gasket and the screen retaining frame, e.g., bezel, to form a good electrical interface therebetween. The strands of the screen are disposed at right angles to one another, with none of said strands being disposed horizontally or vertically. The strands are formed of electrically conductive material and are coated with silver. The silver surface is in the form of silver sulfide to give a darkened appearance.

Abstract: Ink jet and xerographic binary graphic printers are disclosed which make reproductions by marking the pixels within a raster pattern on a copy sheet with a high or low density (e.g. black or white) mark in response to electrical printing signals. The printing signals are generated by comparing the magnitude of video signals representative of a continuous tone raster image with electrical screen signals organized into halftone cells according to a pattern. A shift circuit processes received video signals and identifies the center of the black (or white) video signals within the confines of a screen halftone cell. The pattern of screen signals within a halftone cell is shifted to the center of the black video signals. The cell shifting suppresses beat frequencies in reproductions of originals containing screens or image detail with frequencies near that of the electrical screen.

Abstract: A composite video signal recording and reproducing system also records and reproduces an audio signal after their conversion into a digital signal. The recording system converts an input analog audio signal into a digital signal and generates a synchronizing signal corresponding to a synchronizing signal of the composite video signal. There is a time-axis compression of the converted digital signal so that they do not exist in the period corresponding to the synchronizing signal. A level-setter sets the level of the digital signal which has been compressed at a value which is lower than the white peak level of the composite video signal. A mixer mixes the level set digital signal and the generated synchronizing signal, to obtain a composite digital signal. The composite digital signal is supplied to the recording and/or reproducing apparatus and recorded on a recording medium.

Abstract: A video signal reproducing system comprises a tape on which video signals are recorded along video tracks, which extend obliquely to the longitudinal direction of the tape with substantially no space therebetween. A control signal is recorded along a control track extending in the longitudinal direction, the video tracks being recorded by a plurality of rotating video heads having gaps of mutually different azimuth angles. The control signal is recorded along the control track interrelatedly with the recording of the video tracks by the video heads. A motor drives the tape in tape travel or stops the tape. A plurality of rotating, reproducing video heads successively trace the video tracks to pick up and reproduce the recorded video signals.

Abstract: Representation of a speech signal by its short-time Fourier transform and the application of this representation to the problem of time compression and expansion of speech are presented. A time-frequency representation for linear time-varying systems is applied to a model for speech production to formulate a quasi-stationary representation for the speech waveform. This representation has the property that simple time scaling of the parameters of the representation corresponds to changing the rate of the speech. Given a real speech signal, short-time Fourier analysis provides a technique for estimating and modifying these parameters. The results of the theoretical analysis are used to design a high-quality speech rate-change system which are simulated on a general-purpose digital mini-computer.

Abstract: The invention concerns a floppy disc drive unit in which all the movements are made automatically with the aid of two motors. Using a positioning motor positioning a magnetic head on various tracks of the floppy disc, the floppy disc is automatically drawn into the floppy disc drive unit and ejected therefrom. With the aid of a driving motor provided to drive the floppy disc, the floppy disc is clamped and unclamped and felt pressure pads are lowered and raised automatically.

Abstract: An electromagnetic transducer head for a tape recording and reproducing system comprises a pair of generally U-shaped single crystalline ferrite cores having their first legs secured together and their second legs spaced from each other to form a magnetic gap in which a wafer of glossy material is provided. Each of the ferrite cores has crystal planes (211), (110) and (111). The magnetic gap is aligned to the crystal plane (111) and the second legs of the cores are shaped to provide a tape contact surface which is parallel with the crystal plane (211). The crystal plane (110) is at right angles to the planes (211) and (111) and forms a passage for magnetic flux. The crystallographic axis <110> of each core extends at an angle to the magnetic gap so as to meet the axis <110> of the other core at a point aligned with the tape contact face.

Abstract: A thin film magnetic head having a contact surface which, when such magnetic head is in use, slidingly contacts a magnetic information carrier, such as a magnetic tape, drum or disc, for the information recording or reproduction. The magnetic head comprises a support substrate on which a thin magnetic layer and a non-magnetic layer are deposited in side-by-side relation to each other. The non-magnetic insulating layer has a wear resistance equal to or higher than that of the thin magnetic layer. A method for the manufacture of the thin film magnetic head is also disclosed.

Abstract: An engergizing circuit for a solenoid valve has a power source connected to a solenoid coil of the solenoid valve through on-off contacts. The energizing circuit includes a capacitor and a solid-state surge absorber which are respectively connected in parallel with the solenoid coil, and the surge absorber is made from a sintered material containing a metal oxide as a principal component and having a non-linear electric resistance characteristic with respect to the applied voltage. By virtue of the solenoid valve energizing circuit constructed as described, when the on-off contacts are separated, the occurrence of an arc between the contacts thus preventing wear of the contacts, while when the solenoid coil is deenergized, the delay time in the return movement of the valve spool is decreased, and moreover the surge voltage produced across the ends of the solenoid coil upon its deenergization is controlled to a predetermined low voltage.

Abstract: A static type overload relay is used to protect a motor against overload. The overload relay comprises an integrator for integrating the difference between the motor current and a continuous current carrying capacity of the motor. When the output of the integrator exceeds a predetermined value, a circuit breaker connected in series with the motor is tripped.

Abstract: An electrical device for protecting an alternating current network in which a static inverse time-overcurrent relay obtains network current information and relay circuit operating power from a current transformer having two secondary windings. Low transformer burden and accurate network information signals that are linearly responsive to a wide range of network current magnitudes are achieved through the use of a switching circuit that prevents the simultaneous operation of both secondary windings. The relay circuit employs an RC network with a short, precision time constant for curve shaping and employs digital counting techniques to provide time delay multiplication, precision time scale selection and a variable delay time variable in accordance with the magnitude of system current.

Abstract: Apparatus for removing electrostatic charge from an aircraft windscreen includes a conductive member arranged to be supported in contact with or in juxtaposition to the windscreen and connected to the aircraft "earth". If in contact, the member may be of conductive rubber. If juxtaposed, it may be of metal or other rigid material. The linkage supporting the member is arranged to allow it to be swept over the windscreen surface to clear an extended area thereof of charge.

Abstract: Ceramic body containing embedded metal electrodes is provided with end termination configurations using a paste containing base metal particles, glass frit and MnO.sub.2 ; the body and end terminations are co-fired to provide a ceramic capacitor.

Abstract: A device for protecting the connectors of an electronic power assembly disposed in an enclosure which contains a fluorinated hydrocarbon. The connectors are isolated by connecting them to a sealed terminal box through a chamber between the enclosure cover and the terminal box sealed by means of a seal.Applications: Electric equipment in the railway and highway field.

Abstract: To seat an electrical circuit element in a metallized opening of a circuit board and permit escape of solder gases, a bead is placed on the insertion pin and formed with a surface facing the support board which is non-symmetrical with respect to the axis of the pin, and of the insertion opening. Preferably, the surface is conical, and on adjacent pins the cone angles are tilted in opposite directions to provide for the non-symmetrical positioning of any one cone and centered placement of the insertion pins in the insertion openings.

Abstract: A driving mechanism for selectively disposing retractable lamps of a motor vehicle pivotally connected to a body at a portion thereof, either in a housing or in an exposed position, which mechanism has a first paired link-rod to be driven by a motor, and a second paired link-rod pivotally interconnecting the first paired link-rod and the retractable lamp, with one end of the second link being pivotally connected to the body, wherein respective apparent longitudinal axes of the first and the second paired link-rod are arranged to be aligned when the retractable lamp is brought into the exposed position thereof. Additionally, an axis passing through one end of the second link pivotally connected to the body and a pivot joint at which the first rod is pivotally connected with the second link, and the apparent longitudinal axis of the first paired link-rod are further arranged to meet each other at right angles.

Abstract: A fluorescent light fixture is provided which can be easily assembled from kit form and in essence provides a reversible mounting system such that the main housing can be alternatively mounted flush against a flat wall or ceiling surface or reversed so that a pair of orthogonally related housing walls fit flush into a corner defined between two walls or a wall and a ceiling. The flat wall mode of deployment can also be adapted to be spaced from a ceiling by the addition of a pair of conventional chain mounts used for fluorescent fixtures.

Abstract: Ce-substituted alkaline earth magnetoplumbite aluminate phosphors containing 15 to 50 mole percent of cations (exclusive of Al) as Ce exhibit intense relatively narrow band emissions between 320 and 350 nanometers, making such phosphors especially useful in applications such as therapeutic or cosmetic skin treatments, or the stimulation of chemical reactions.

Abstract: A vehicle headlamp for producing a Z-beam pattern has a reflector provided with a reflective area lying on a surface defined by rotating an ellipse about an axis which passes through the inner focus of the ellipse and which is inclined an acute angle (1.degree.-2.degree.) to the focal axis of the ellipse. A shielded filament for producing an inclined cut-off line to the beam is used and is orientated in the opposite sense to that in which it is orientated in a conventional headlamp for producing an inclined cut-off. Lensing at the front of the reflector splits the area of the basic beam pattern immediately below a horizontal portion of the cut-off line into parts which define upper and lower, mutually laterally displaced horizontal cut-off portions in the required Z-beam pattern.

Abstract: A lamp assembly, particularly a rear lamp assembly for a motor vehicle has an electrically insulating hollow body, a plurality of bulbholders, and a plurlity of spaced, electrically conductive elements, cut from an electrically conductive sheet, extending between a location in the body at which an electrical supply connector is attached to the assembly in use and respective locations in the body adjacent the bulbholders. At least one bulb contact blade extends into each bulbholder and each bulb contact blade has a substantially U-shaped blade portion which is disposed externally of the bulbholder. Electrically conductive blades are integral with at least some of the electrically conductive elements. Each blade is in facial contact with internal faces of the respective substantially U-shaped blade portion. Each U-shaped blade portion is preferably an interference fit in a respective support integral with a base of the body.

Abstract: A voltage control circuit for an uninterruptible power supply (UPS), said UPS involving a controlled rectifier operating from an input AC line to charge batteries and to hold them at a constant voltage; the batteries supply power to an inverter which in turn produces an AC output, such output being uniquely controlled by efficiently and accurately compensating for any fluctuations due to battery voltage changes or to load changes.

Abstract: A switch mode power supply for electronic circuits includes a rectifier for providing direct current from an alternating current line, a transformer connected to the rectifier, and an oscillating switching circuit connected in series with the transformer and the direct current source, operative to chop the direct current source to power the transformer. Power for starting up the oscillator, which requires a substantially lower voltage than that of the rectified source, is derived from a capacitor charged by the direct current source. A comparator senses the voltage on the capacitor and a reference voltage, and controls a transistor switch to discharge the capacitor into the switching circuit, when the proper voltage is attained, initiating the oscillator. A running switch mode power supply connected to a secondary of the transformer then provides power to the oscillator and turns off the transistor switch.