Abstract: An electronic game board for a domino game has a flat playing surface for two to eight playing positions. A switch at each playing position is arranged to activate a corresponding light source. A dome is mounted to the board to provide a location for displaying a master domino tile and to provide a housing for a power source that is connected to the LED's.

Abstract: A telemetry optical fiber has a first end optically coupled to a signal source/detection module. A conversion module is optically coupled to a second end of the telemetry optical fiber. The conversion module includes an interferometer having a pair of optical paths with an optical waveguide arranged to be included in each one of the optical paths. The interferometer is arranged to produce an interference pattern to indicate the phase relationship of optical signals input to the pair of optical paths from the signal source/detection module. A phase modulator is arranged to phase modulate optical signals guided by the optical waveguide. A sensor head that produces a voltage proportional to a quantity being measured is connected to the phase modulating apparatus and arranged to provide a modulating signal to the phase modulating apparatus such that the interference pattern indicates the magnitude of the measured quantity.

Abstract: Apparatus for minimizing the effects of radiation induced attenuation on a sense coil in a fiber optic rotation sensor includes apparatus for injecting photobleach light at a frequency selected to remove radiation-induced color centers. Wavelength division multiplexing optical couplers are used to introduce the photobleach light into the fiber optic rotation sensor system and then remove the photobleach light from the gyroscope optical circuit without effecting the gyro signal.

Abstract: A manufacturing method of diaphragms for use in electroacoustic transducers simultaneously joins an edge and a diaphragm body upon molding the diaphragm body through an injection molding with a set of mating molds for forming the diaphragm body, with the edge of a cell-structure disposed on one of the mating molds, the edge being preliminarily molded and cut into a predetermined shape, and with the other mold mated with the one mold.

Abstract: A method and apparatus for manufacturing laminates are arranged for forming a laminate block by sequentially folding back continuous metal sheets 3 and 4 drawn through outlets 16 out of rolls 5 and 6 of the sheets wound on reels 1 and 2, with synthetic resin sheet members 9 and interlayers 10 alternately interposed between the metal sheets, into multiple stages, and pressing the thus stacked laminate block while electrically heating the continuous metal sheets 3 and 4 in the laminate block, wherein the stacking is performed while keeping the continuous metal sheets 3 and 4 in tension between the outlets 16 of the reels 1 and 2 and each end edge of the laminate block 12.

Abstract: A video signal distribution system comprises an interface device and video signal input means for receiving TV signals on broadcast channels connected to the interface device. A plurality of video appliances and a plurality of TV sets may be connected to the interface device such that the television sets are arranged to be remote from the plurality of video appliances. A person using the system has a remote control device that may be actuated to emit signals for selecting channels for viewing and to control the video appliances. Each of the television sets includes a repeater arranged to receive the control signals from the remote control device and form corresponding electrical control signals. The interface device receives the electrical control signals corresponding to a selected TV set and directs electrical control signals to a selected one of the plurality of video appliances to provide video signals to the television sets.

Abstract: Optical signals input to a sensor array that includes a plurality of pathlength mismatched interferometers are phase modulated. Two different phase steps are generated in sequence within a time interval T in signals output from the interferometer array. Signals output from the array are processed to produce a first output signal S.sub.1 that is a function of the phase shift .phi. and a first one of the phase steps in a first portion of the time interval T and a second output signal S.sub.2 that is a function of the phase shift .phi. and the other one of the phase steps in a second portion of the time interval T. The signals S.sub.1 and S.sub.2, are processed to calculate the phase shift .phi. in optical signals that have propagated through the sensor array as functions of the sum and differences of the signals S.sub.1 and S.sub.2.

Abstract: A set-up assembly of casing for electric appliances includes four members of a base, left and right side covers and a front cover, in which the base and side covers are coupled with an interlocking coupling and internal screw fastening, the front cover is mounted to the base with latches and clamps, and pairs of the base and front cover mounted to the base are provided for direct connection in mutually side-by-side manner, while the bases in the adjacent pairs can be mutually coupled with the interlocking couplings and connected in gripping manner with connecting metal fittings, for the extension in integralized state, without exposing wiring cables of the appliances to the exterior of the casing.

Abstract: A self-erecting collapsible net for stopping the flight of projectiles such as a golf ball, the collapsible net comprising: (a) a closed loop resilient coilable member having a perimeter; (b) a fabric portion attached to at least a portion of the perimeter of the coilable member to stop a projectile impelled thereon; and (c) support means comprising at least one support member extending from a portion of the perimeter of the coilable member, the support member including a stake bore protruding therein, the stake bore being sized and shaped to receive a stake capable of being placed in a stake pocket in a substantially horizontal surface. The collapsible net can be expanded and disposed on said surface with one end of the stake introduced into the stake bore in the support member, and another end of the stake introduced into a stake pocket in said surface, thereby erecting the collapsible net in a substantially uprightly position such that the plane of the fabric is substantially transverse to said surface.

Abstract: An assembly module provides well-organized optical fiber component attachment features and convenient fiber routing areas for assembling and containing a fiber optic device such a telemetry module. The module comprises a first substrate having a first side and a second side. The first side includes a plurality of sidewalls and a recessed floor surface bounded by the sidewalls. Some of the sidewalls have a cavities formed therein. A plurality of channels extend from the ends of the cavities. A plurality of projections extend from the sidewalls over selected portions of the floor surface such that a lower edge of each projection is spaced apart from the floor surface. Optical fiber components (couplers, splices, etc.) may be mounted in the cavities, and optical fibers are routed to and from the optical fiber components on regions between the sidewalls and through the channels.

Abstract: Quadrature signals Q and in-phase signals I output from a pathlength mismatched interferometric sensor are normalized sampling the signals to obtain a first set of values Q.sub.k =Q.sub.0 B.sub.k sin .phi..sub.k corresponding to the sine of the phase shift and a second set of values I.sub.k =I.sub.0 B.sub.k cos .phi..sub.k corresponding to the cosine of the phase shift where k is a running index of the set of consecutive samples of Q and I. A quantity DQ.sub.k =.vertline.(Q.sub.u(k)).sup.2 -(Q.sub.s(k)).sup.2 .vertline. is calculated for the quadrature signals; and a quantity DI.sub.k =.vertline.(I.sub.u(k)).sup.2 -(I.sub.s(k)).sup.2 .vertline. is calculated for the in-phase signals, where u(k) and s(k) are parameters used to determine indices that select specific sampled signals and k is a running index of the set of consecutive samples of Q and I. The normalization factor is then calculated as the ratio R=Q.sub.N /I.sub.

Abstract: In wiring circuit board having fine and isolated conductor circuit pattern, a metal deposit coat is formed at desired position on the isolated conductor circuit pattern without damaging conductor circuit of the pattern, as an object of the invention. An electrically conducting layer consisting of a material electrically conducting and peelable with one of heat, solvent and alkali is formed on the wiring circuit board so as to be at least in contact with the isolated conductor circuit pattern on which the deposit coat is to be formed, a peelable protect layer is formed to be superposed on the electrically conducting layer at least at other portions than the portion where the deposit coat is to be formed, a metal deposition is performed on the portion not coated with the protect layer by means of an electroplating with the electrically conducting layer used as a power supply layer, and the electrically conducting and protect layers left on the wiring circuit board are peeled off.

Abstract: A sinusoidal phase generated carrier is used to demodulate signal output from an interferometric sensor array. Optical signals input to the array are modulated with a sinusoid. Output signals are sampled and integrated over portions of a period of the phase generated carrier. A key to this method of sampling is the existence of pairs of signals associated with integration over two 180.degree. out-of-phase portions of the phase generated carrier. This invention is a four step method involves the implementation of two pairs of such signals to determine the phase shift in each sensor in the array.

Abstract: A power source device restricts any increase in a switching current to switching elements commonly used in two such different power source circuits as chopper and inverter circuits, while maintaining control independence of these circuits, by setting a period in which among currents flowing to the commonly used switching elements, the current flowing at least from one of the power source circuits has a polarity inverse to that of the current from at least the other power source circuit, to be in mutually cancelling directions.

Abstract: A pulse generator for a stable output pulse voltage obtains a high voltage pulse with a charge accumulated in a capacitor and discharged at a discharge gap made ON, wherein a pulse energy source and a trigger source for conduction of the discharge gap are separately provided, so that the discharge gap will be conducted by a boosting action of the trigger source when a predetermined value is reached by a voltage of the pulse energy source.

Abstract: A fiber optic switching apparatus includes a first fiber alignment head having a V-groove formed therein. A first optical fiber is mounted in the V-groove with an end of the first optical fiber being arranged to be spaced apart from an end of the V-groove. A second fiber alignment head is arranged to be adjacent the first fiber alignment head. The second fiber alignment head includes a switching member arranged to be pivotable between a first position and a second position. A second optical fiber is connected to the switching member with the second optical fiber being arranged to have an end extending into the V-groove such that the ends of the first and second optical fibers are in longitudinal alignment when the switching member is in its first position and being out of alignment when the switching member is in its second position.

Abstract: Compensating for motion of the host vehicle in a synthetic aperture radar system includes collecting inertial data with an inertial navigation system during an imaging period in which a synthetic aperture radar pulse is directed to a target. During the imaging period global positioning system corrections to the inertial data are collected. A smooth representation of the global positioning system corrections is formed and then the smooth representation of the global positioning system corrections is applied to the inertial data after completion of the imaging period.

Abstract: A mounting plate and locking key are arranged to mount a camera lens housing to a faceplate. The lens housing extends through a hole in the mounting plate so that an end of the lens housing is aligned with a hole in the faceplate. The mounting plate is a thin, elongate rectangle having a raised central portion and a pair of support members extending in opposite directions therefrom. The locking key is a thin elongate rectangle having a generally U-shaped opening formed in one end. The locking key is inserted between the faceplate and the raised central portion of the mounting plate. The U-shaped opening is then in alignment with the hole in the mounting plate so that edges of the U-shaped opening are engaged with the lens housing.