Abstract: An antenna device includes: a circuit board; an antenna placed on the circuit board; and a reflector that is erected on the circuit board and extends along its surface. The reflector has: a convexly curved portion protruding toward the antenna, the convexly curved portion reflecting radio waves emitted by the antenna; and a first plane portion and second plane portion that extend from both sides of the convexly curved portion along the surface of the circuit board, form a V shape together with the convexly curved portion in plan view, and reflect radio waves emitted by the antenna. The surface of the convexly curved portion has a shape equivalent to a portion on the outer circumferential surface of a cylinder, the portion being the range of an azimuth angle with respect to a cylindrical axis. The convexly curved portion is inclined toward the antenna with respect to the circuit board.

Abstract: A sensor module includes a light emitter that emits light beams including near-infrared light beams towards a subject; a light receiver that receives light beams having passed through the subject; and a controller that estimates biological information based on signals output from the light receiver. The light emitter includes a plurality of light emitting elements that emit near-infrared light beams having central wavelengths different from each other. The light emitter produces sets of light emissions by causing the plurality of light emitting elements to sequentially and intermittently emit the near-infrared light beams. In given two consecutive sets of light emissions produced by the light emitter, a second non-light-emission period of time T4 is longer than a first non-light-emission period of time T2. The controller estimates the biological information in a processing period of time T41 that is set in correspondence with the second non-light-emission period of time T4.

Abstract: A device for measuring biological information includes at least one light emitting element configured to emit light having predetermined wavelength, a light receiving element configured to receive returned light from a subject with respect to the emitted light, an attachment determination unit configured to determine whether the device is attached to the subject with respect to the light receiving element based on an amount of returned light received, and a measurement-point determination unit configured to determine whether or not a point where the device is attached to the subject is suitable for measuring the biological information based on the amount of returned light received, when the attachment determination unit determines that the device is attached to the subject.

Abstract: A sensor module includes a light emitter that emits light beams including near-infrared light beams towards a subject; a light receiver that receives light beams having passed through the subject; and a controller that estimates biological information based on signals output from the light receiver. The light emitter includes a plurality of light emitting elements that emit near-infrared light beams having central wavelengths different from each other. The light emitter produces sets of light emissions by causing the plurality of light emitting elements to sequentially and intermittently emit the near-infrared light beams. In given two consecutive sets of light emissions produced by the light emitter, a second non-light-emission period of time T4 is longer than a first non-light-emission period of time T2. The controller estimates the biological information in a processing period of time T41 that is set in correspondence with the second non-light-emission period of time T4.

Abstract: For a sensor module that is easily positioned at a position at which biological information can be obtained when attached to an object under detection and a biological information displaying system that includes the sensor module, provided is a biological information displaying system 1 that includes a sensor module 10 that includes a light emitting part 11 including a light emitting element 11a1 and a light emitting element 11a2 arranged at an interval; and a light receiving part 12 including one light receiving element 12-1 sensitive to near-infrared light. The one light receiving element 12-1 is arranged to receive light emitted by the light emitting element 11a1 and the light emitting element 11b1, and the light emitting element 11a1 and the light emitting element 11b1 emit near-infrared light having a same central wavelength ?1.

Abstract: In an authentication method between communication devices, the authentication method being used for identifying a communication device to serve as a target of communication among a plurality of communication devices including a first communication device and a second communication device and establishing a connection for communication, the first communication device receives a signal the second communication device transmits, detects first displacement information relating to the positional change of the second communication device, from a change in the intensity of the received signal and a change in the phase thereof, performs first determination by comparing the first displacement information with first held information preliminarily set, and identifies the second communication device as a target of communication on the basis of the result of the first determination.

Abstract: An externally threaded fiber-reinforced plastic member comprising a shank and an integral thread on the exterior surface on the shank, in which a plurality of first strands are arranged substantially in parallel and extending longitudinally of the axis of said shank and a plurality of second strands are arranged substantially in parallel and substantially in perpendicular relation to said first strands has a unique interior structure in which most of the resin-impregnated fiber-filaments existing within the thread extending substantially in a plane including a cross-section of the threaded member are those extending continuously from and laterally of the shank into the thread. Such an externally threaded member having satisfactory mechanical strengths, and can be produced with high productivity and at low cost, utilizing the pultrusion technique, although the production method is not limited thereto.

Abstract: An internally threaded fiber-reinforced plastic member comprising a hollow body which has a body portion and a central bore, in which at least one crossing pair of unified groups of resin-impregnated strands are arranged substantially in perpendicular relation to the axis of the member, has been found to be extremely excellent in mechanical strength. Such an internally threaded member can be produced with high productivity and at low cost, utilizing filament winding technique, although the production method is not limited thereto.

Abstract: A potentially bulky, processed yarn which is a substantially non-interlaced multifilament yarn of a thermoplastic synthetic fiber satisfying the characteristic values of R.sub.max /R.ltoreq.2.5, .DELTA.S.sub.5 .gtoreq.1.5, .DELTA.S.sub.50 .ltoreq.3.0, Y.gtoreq.1.3 and X.sub.T --X.ltoreq.1.0, where R.sub.max is maximum tension fluctuation width, R is average tension fluctuation width of a normal portion, .DELTA.S.sub.5 is difference in maximum shrinkage among each filament of a sample having a length of 5 cm, .DELTA.S.sub.50 is difference in maximum shrinkage among each filament of a sample having a length of 50 cm, X.sub.T is maximum tension, X is average tension and Y is degree of bulkiness/dry heat shrinkage.

Abstract: Spun yarn-like textured polyester yarns comprised of two types of polyester multifilament component yarns and having broken filaments, in which textured yarns there is a difference in length between the component yarns, whereby high bulkiness is imparted thereto. The individual filaments of one of the component yarns have a fineness less than those of the other component yarn. The spun yarn-like textured yarns have satisfactory pilling resistance and frosting resistance.The spun yarn-like high bulky textured yarns can be produced by a process comprising doubling two types of undrawn polyester multifilament yarns having different properties through an intertwisting regulative device and simultaneously draw-texturing the doubled undrawn yarns.

Abstract: Spun yarn-like high bulky textured polyester yarns comprised of two types of polyester multifilament component yarns A and B and having broken filaments, in which textured yarns there is a difference in length between the component yarns A and B, whereby very high bulkiness is imparted thereto. The individual filaments of the component yarn A have a fineness and an intrinsic viscosity less than those of the component yarns B. The spun yarn-like high bulky textured yarns have satisfactory pilling resistance and frosting resistance.The spun yarn-like high bulky textured yarns can be produced by a process comprising doubling two types of undrawn polyester multifilament yarns having different properties through an intertwisting regulative device and simultaneously draw-texturing the doubled undrawn yarns.

Abstract: A process for producing a potentially bulky yarn which is a substantially non-interlaced multifilament yarn of a thermoplastic synthetic fiber satisfying the characteristic values of R.sub.max /R.ltoreq.2.5, .DELTA.S.sub.5 .gtoreq.1.5, .DELTA.S.sub.50 .ltoreq.3.0, Y.gtoreq.1.3 and X.sub.T -X.ltoreq.1.0, where R.sub.max is maximum tension fluctuation width, R is average tension fluctuation width of a normal portion, .DELTA.S.sub.5 is difference in maximum shrinkage among each filament of a sample having a length of 5 cm, .DELTA.S.sub.50 is difference in maximum shrinkage among each filament of a sample having a length of 50 cm, X.sub.T is maximum tension, X is average tension and Y is degree of bulkiness/dry heat shrinkage.

Abstract: This invention relates to a method and apparatus for imparting false twists to two yarns simultaneously. The significance of the invention resides in that an industrially utilizable method for false twisting yarns by frictional contact of two yarns with 4 rotating frictional discs has been provided. The apparatus of the present invention for practising the false twisting method is characterized in that the angle of contact of yarns with the frictional discs is maintained within a specific range and the frictional discs are attached to four shafts in specific order at specific heights. Various processes for preparing a variety of false twist yarns by utilizing the false twisting method and apparatus of the present invention have been established.

Abstract: A textured polyester yarn having improved variation in dyeability along its length is composed of a plurality of individual filaments each having thick and thin sections randomly distributed along the filament axis, said yarn having an Uster evenness value of 1.0 to 10.0%, a T index of 3 to 30 and a variation in reflected light intensity in a continuous dyeing test of .+-.0.15 to .+-.0.80 and said yarn preferably having not-untwisted portions containing genuine twists of a fixed direction intermittently retained at random along its length. The yarn is produced by false twisting a polyester yarn composed of a plurality of individual filaments each having variation in cross-sectional area along its length, in which the thick sections have a birefringence of 15 to 80.times.10.sup.-3 and the thin sections have a birefringence of 90 to 200+10.sup.-3, at a temperature of not lower than 180.degree. C and under a twisting tension of 0.05 to 0.8 g/d with a variation with respect to the average twisting tension of .+-.