Abstract: A layered structure is disclosed which includes a stack of alternating active regions and confining layers arranged so that each active region is sandwiched between confining layers. Each active region preferably includes one or more quantum well layers disposed between barrier layers. Carrier injection means are provided for injecting carriers into the layered structure to cause phase locked light emission from the active regions. In this manner, an output laser beam can be obtained that has substantially improved far field divergence as compared, for example, to a beam emanating from a single active region.

Abstract: A method and apparatus for friction welding a pair of workpieces (45,46) is described. The apparatus comprises a drive assembly (30) for causing relative motion between the workpieces while urging the workpieces together. A load control assembly (20) is provided which is responsive, at least towards the end of a weld cycle, to the rate of motion of one workpiece relative to the other to cause the workpieces to be urged together under a force which increases as the rate of relative motion decreases.

Abstract: An IC card having a plastics card body which mounts a CPU, a RAM, a ROM, a solar battery mounts also to EEPROM (electrically erasable programmable read only memory), which is used for identification of a card owner. Due to high power consumption of said EEPROM, a tandem type solar battery in which a plurality of opto-electric conversion cells are laminated on a substrate is used. The present IC card can operate with only the solar battery mounted inside of the IC card, and has no secondary battery.

Abstract: A high power pump light source for optical direct amplifier using the stimulated Raman effect is obtained by using a plurality of semiconductor lasers each of which provides low output power. More than two beams of the same wavelength generated by semiconductor lasers are combined (polarization multiplex) by using a polarization prism block, which provides sufficient high power pump light for the stimulated Raman effect amplifier. The output of said polarization prism block is wavelength division multiplexed with signal light to be amplified by using an interference filter block, the output of which is applied to a transmission optical fiber in which amplification of said signal light is effected.

Abstract: A complex circuit component for a video signal circuit in a television receiver set has a single substrate, on which a first ceramic trap for removing speech carrier wave together with an inductor for that trap, a second trap for removing color subcarrier wave, and a delay circuit coupled with output of said second trap are mounted. The capacitors for those circuits are implemented by a pair of conductive patterns deposited on front surface and rear surface of the substrate. The capacitor for said first ceramic trap is subject to trimming so that the characteristics of the trap is adjustable.

Abstract: A vertical recording system using a rigid disk medium with high recording density has a substrate made of alumina silicate resin glass and a vertical magnetic anisotropic film located on said substrate. The anisotropic film has an easy axis of magnetization in the thickness direction of the film, and the hard axis of magnetization in the film plane. The maximum surface roughness R.sub.max of said disk is less than 50 .ANG., and a magnetic recording head which moves relative to the medium operates with said head contacted with the medium. A recording density higher than 200 KFRPI (kilo flux reversal per inch) is obtained by the present invention.

Abstract: A system and method are disclosed for transmission and reception of high definition television signals. A standard television signal is transmitted over a first transmission frequency channel, and an enhancement signal, to be used for enhancing the standard signal to obtain a high definition signal, is transmitted over a second transmission frequency channel that is non-adjacent to the first transmission frequency channel. A code signal, which identifies the second transmission frequency channel, is combined into the standard television signal before transmission. The code signal is recovered at the receiver, and used to automatically tune the receiver to also receive the enhancement signal sent over the second transmission frequency channel. A second code signal, representative of other information, such as the portion of the second transmission frequency channel that contains the enhancement information, can also be sent with the standard signal.

Abstract: A charged particle collector assembly, particularly for use with an electron beam gun, is described. The assembly comprises a reflection member onto which electrons impinge in use, the reflection member being adapted substantially to absorb particles of one polarity and substantially to reflect particles of the other polarity. A sensor or collector is positioned to receive particles reflected from the reflection member and to generate a corresponding output signal.

Abstract: An apparatus is disclosed for temporally processing video signals. A temporal filter is used which enhances temporal response of video at around the peak of the human vision transient system's temporal response (which is around 10 Hertz), and results in moving images which appear sharper.

Abstract: A power supply is disclosed which comprises a ferroresonant circuit, the ferroresonant circuit including a transformer with a core of magnetic material, a primary winding, a secondary winding, and reactive means coupled with at least one of the windings. The transformer also has at least one bias winding. An alternating voltage is applied to the ferroresonant circuit, the alternating voltage having a frequency that is approximately equal to a resonant frequency of the ferroresonant circuit. An output circuit is coupled to the secondary winding. A signal from the output circuit is applied as a feedback signal to the bias winding to control DC flux bias of the core. In an illustrated embodiment, the means for applying an alternating voltage signal to the ferroresonant circuit includes an oscillator for generating alternating voltage control signals, and a switching circuit responsive to an input power source for generating the alternating voltage signals under control of the oscillator.

Abstract: An ultrasonic fog generator can be used to advantage in injecting a fog into the input air of a combustion chamber, in order to improve efficiency and reduce the noxious emissions in the exhaust. In accordance with one form of the disclosure, a heat exchange is utilized to advantage in a turbine system in reheating compressed air that has been cooled as the air was fogged, the reheated air being input to the combustion chamber. In another form of the disclosure an adjustable heat exchange is used to controllably heat input air before the fogging thereof, the level of heat exchange depending on properties of the input air and the level of fogging to be implemented.

Abstract: A microwave filter comprising a rectangular ceramics block (30) having a plurality of elongated parallel holes (31-36) extending from the top surface to the bottom surface thereof. The holes are plated with conductive layers (37, 38), and flat conductive areas (39-44) coupled with the layers (37, 38) spatially disposed on the top surface of the dielectric block (30) surround opening ends of the holes (31-36). An input terminal and an output terminal are provided adjacent to the conductive areas (39, 44) at both the extreme sides of the dielectric block (30).

Abstract: A through type twin capacitor of higher electric strength has been proposed. In the present capacitor, insulating covers which cover conductive rods passing through ceramic body of the capacitor is extended beyond a lower end of the insulation cover which surrounds the lower portions of the rods, in order to improve the electric strength of the capacitor.

Abstract: A charge particle beam generator is described which comprises an annular arrangement of filaments (6) which, when heated, emit electrons. A microprocessor controller (not shown) causes a voltage to be applied across each filament (6) in succession so as to cause the filament to generate electrons. An annular anode (9) is provided radially inwardly of the filaments (6) to accelerated electrons away from the filaments in the form of a beam towards a joint between a pair of workpieces to be welded.

Abstract: A system for the storage, retrieval and manipulation of significantly large amounts of data to produce highly complex and visually pleasing graphics within the time constraint of a full motion video raster scanning system by storing memory data corresponding to each of the individual object elements to be displayed over a period of time, storing lists of identification and display instruction data with respect to those object elements, selecting desired identification and display instruction data for selected display elements appropriate to a particular instant of time and placing such selected data into an appropriate memory, and then creating, from those selected instructions and from the stored data relating to the selected object elements, display data which, in real time, produces the desired display. The initially stored identification and display instructions are preferably in the form of a linked list with the items in each list arranged in order of desired visible priority.

Abstract: The disclosure is directed to a method and apparatus for making a custom shoe based on non-contact measurements of a particular subject's foot. A foot is placed at an inspection position, and a laser beam is directed at the foot, and scanned in a predetermined pattern over the surface of the foot. The light beam reflected from the foot is detected at a position detector. Surface coordinates of the foot are determined as a function of the detector output. The determined surface coordinates are stored and can then be used in making a shoe having a shape which depends on the stored coordinates. In a preferred embodiment, a rotating scanner is disposed above the inspection position and an oscillating reflector is disposed to one side of the inspection position. The beam of light is reflected from the rotating scanner to the oscillating reflector to the foot, and the beam reflected from the foot is thereafter reflected back to the oscillating reflector, the rotating scanner, and then the detector.

Abstract: A parabolic antenna for SHF band having a primary feeder and a reflector is improved by using a backfire helical antenna as a primary feeder, which is fed by using a coaxial cable. The backfire helical antenna has a matching disc coupled with an outer conductor of the coaxial cable feeder, and a coil, one end of which is coupled with an inner conductor of said coaxial cable. The other end of the coil is free standing. The coil is positioned so that the axis of the coil coincides with the axis of the reflector, and the feed end of the coil locates nearer to the reflector than the free standing end of the coil. The present antenna is useful in particular for a receiving antenna for a direct satellite broadcasting.

Abstract: A comb filter for a television receiver set for separating a video signal into a color signal and an intensity signal has a single support with fixed holders for keeping a solid delay line circuit and a related process circuit in place. The holders have grooves or slits for accepting said solid delay line circuit and said process circuit. The process circuit has some adjustable electronic components which are adjusted by using a laser beam or sandblast so that dip frequency of the filter is adjusted. The adjustment is carried out before the filter is mounted on a television set so that no adjustment is necessary after the filter is mounted on the television set.

Abstract: A technique is disclosed for generating a progressively scanned video signal from an interlaced signal without the need for motion-adaptive processing. Low resolution information is obtained from the current interlaced field, and the remaining detail information is obtained from a stored signal that includes a prior field or fields. The obtained signal can then be displayed with progressive scanning at full resolution and without motion artifacts.

Abstract: An ultrasonic fog generator can be used to advantage in injecting a fog into the input air of a combustion chamber, in order to improve the efficiency of the combustion chamber and reduce the noxious emissions in the exhaust. In accordance with a feature of the disclosure, a sensor is provided to sense the concentration of noxious emissions in the exhaust of the combustion chamber. The volume per unit time of the injected fog is increased as the concentration of the noxious emissions increases, and controlled to a preselected emissions setpoint. In accordance with a further feature of the disclosure, a supply of chemical suitable for reacting with a component of the noxious emissions is provided, along with means for combining the chemical with the water supplied to the fogging device.