Abstract: A position detection device configured to detect a position of a moving member that moves back and forth in a predetermined moving direction is provided with an exciting coil arranged to extend in the moving direction along the moving member, a detection coil that, by a magnetic field generated by the exciting coil, outputs a voltage corresponding to a position of a detection object portion moving together with the moving member within a predetermined detection range in the moving direction, and a calculation unit that determines the position of the moving member by calculation based on an output voltage of the detection coil. The detection object portion has a predetermined length in the moving direction, and a voltage is generated in the detection coil due to a difference in magnetic field intensity between a portion corresponding to the detection object portion and a portion not corresponding to the detection object portion.

Abstract: A position detection device detects a position of a moving member moving backward and forward in a predetermined moving direction. The position detection device includes an exciting coil disposed along the moving member and extending in the moving direction, a detection coil that outputs a voltage corresponding to a position of a detection target portion moving with the moving member by means of a magnetic field generated by the exciting coil within a predetermined detection range in the moving direction, and a calculation unit that calculates the position of the moving member by the output voltage of the detection coil. The detection coil includes a pair of coil elements whose output voltage changes according to the position of the moving member, and phases of the output voltages of the pair of coil elements during movement of the moving member within the detection range differ from each other.

Abstract: A multicore cable inspection method of specifying a correspondence relationship among ends of insulated electric wires exposed from both ends of a multicore cable, the method including: inputting, by capacitance coupling, an inspection signal to the end of the insulated wire to be inspected among the ends of the insulated wires exposed at the one end of the multicore cable; inputting, by the capacitive coupling, each of first and second signals, each of which has a phase different from the inspection signal, to the ends of the two insulated wires other than the insulated wire to be inspected; measuring a voltage of an output signal outputted from the capacitive coupling from each end of the insulated wires exposed at the other end of the multicore cable; and specifying the other-side end of the insulated wire to be inspected. At this time, an amplitude of a signal obtained by adding the inspection signal and the first and second signals is smaller than that of the inspection signal.

Abstract: An assembling method for a multi-core cable having a plurality of electrical insulated wires is designed to connect one-end-portions of the electrical insulated wires to electrode patterns, respectively, of one circuit board, correspondingly connect other-end-portions of the electrical insulated wires to electrode patterns, respectively, of the other circuit board, compute intersection coefficients on one end side and the other of the cable, and iterate interchanging connecting destinations for the one-end-portions of the electrical insulated wires, correspondingly interchanging connecting destinations for the other-end-portions of the electrical insulated wires, and computing the intersection coefficients on the one end side and the other of the cable.

Abstract: An assembling method for a multi-core cable having a plurality of electrical insulated wires is designed to connect one-end-portions of the electrical insulated wires to electrode patterns, respectively, of one circuit board, correspondingly connect other-end-portions of the electrical insulated wires to electrode patterns, respectively, of the other circuit board, compute intersection coefficients on one end side and the other of the cable, and iterate interchanging connecting destinations for the one-end-portions of the electrical insulated wires, correspondingly interchanging connecting destinations for the other-end-portions of the electrical insulated wires, and computing the intersection coefficients on the one end side and the other of the cable.

Abstract: A multicore cable inspection method of specifying a correspondence relationship among ends of insulated electric wires exposed from both ends of a multicore cable, the method including: inputting, by capacitance coupling, an inspection signal to the end of the insulated wire to be inspected among the ends of the insulated wires exposed at the one end of the multicore cable; inputting, by the capacitive coupling, each of first and second signals, each of which has a phase different from the inspection signal, to the ends of the two insulated wires other than the insulated wire to be inspected; measuring a voltage of an output signal outputted from the capacitive coupling from each end of the insulated wires exposed at the other end of the multicore cable; and specifying the other-side end of the insulated wire to be inspected. At this time, an amplitude of a signal obtained by adding the inspection signal and the first and second signals is smaller than that of the inspection signal.

Abstract: A method for testing a multicore cable including a single common shield covering plural insulated wires to identify a correspondence relation between one end portion and the other end portion of the insulated wires exposed from both ends of the multicore cable. The testing method includes allowing the common shield to have a same potential as a measurement system ground, inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages.

Abstract: A solder with ground bar includes a first unit and a second unit. The first unit includes a first ground bar and a first solder layer attached to one side of the first ground bar. The second unit includes a second ground bar and a second solder layer attached to one side of the second ground bar. The first unit and the second unit are arranged in such a manner that the first solder layer and the second solder layer face each other. The first solder layer and the second solder layer are partially joined together.

Abstract: A method for testing a multicore cable including not less than three insulated wires to identify a correspondence relationship between one end portion and an other end portion of the insulated wires exposed from both ends of the multicore cable. The method includes inputting a test signal, by capacitive coupling, to an end portion of the tested insulated wire among end portions of the insulated wires exposed at one end of the multicore cable, inputting a phase-inverted test signal in an opposite phase to that of the test signal, by capacitive coupling, to an end portion of the insulated wire, other than the end portion of the tested insulated wire, and measuring voltages of output signals output respectively from end portions of the insulated wires exposed at the other end of the multicore cable to identify an other end portion of the tested insulated wire based on the measured voltages.

Abstract: A method for testing a multicore cable that includes a single common shield covering plural insulated wires. The testing method includes inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages. The voltages of output signals are measured in a state that an output variation reduction capacitive element is connected in series with a coupling capacitance generated by the capacitive coupling.

Abstract: A solder with ground bar includes a first unit and a second unit. The first unit includes a first ground bar and a first solder layer attached to one side of the first ground bar. The second unit includes a second ground bar and a second solder layer attached to one side of the second ground bar. The first unit and the second unit are arranged in such a manner that the first solder layer and the second solder layer face each other. The first solder layer and the second solder layer are partially joined together.

Abstract: A method for testing a multicore cable that includes a single common shield covering plural insulated wires. The testing method includes inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages. The voltages of output signals are measured in a state that an output variation reduction capacitive element is connected in series with a coupling capacitance generated by the capacitive coupling.

Abstract: A method for testing a multicore cable including a single common shield covering plural insulated wires to identify a correspondence relation between one end portion and the other end portion of the insulated wires exposed from both ends of the multicore cable. The testing method includes allowing the common shield to have a same potential as a measurement system ground, inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages.

Abstract: A method for testing a multicore cable including not less than three insulated wires to identify a correspondence relationship between one end portion and an other end portion of the insulated wires exposed from both ends of the multicore cable. The method includes inputting a test signal, by capacitive coupling, to an end portion of the tested insulated wire among end portions of the insulated wires exposed at one end of the multicore cable, inputting a phase-inverted test signal in an opposite phase to that of the test signal, by capacitive coupling, to an end portion of the insulated wire, other than the end portion of the tested insulated wire, and measuring voltages of output signals output respectively from end portions of the insulated wires exposed at the other end of the multicore cable to identify an other end portion of the tested insulated wire based on the measured voltages.

Abstract: A signal detecting device provided in a connector at an end of a communication cable or in a communication device to which the connector is connected. The signal detecting device includes a detection circuit that branches and extracts a portion of a signal transmitted through the communication cable and indicates existence of a data communication based on the extracted signal, and a self-diagnostic circuit that inputs a diagnostic signal into the detection circuit upon diagnosis of the detection circuit.

Abstract: A communication device is provided wherein a number of the pairs of transmission lines is N, each pair of the transmission lines comprises (N?1) stages of sub-transmission lines generating a same amount of crosstalk as that caused at a connector, and (N?1) stages of connecting portions comprise a transmission path of the connector and a first stage sub-transmission line, and (N?1) stages of the connecting portions to connect an i th stage sub-transmission line and an (i+1) th stage sub-transmission line by the straight/cross connection, and wherein each pair of the transmission lines is different in all pairs in a number of the connecting portion having the cross connection; and as a j th stage connecting portion in any one pair of the transmission lines has cross connection, a (N?j) th stage connecting portion in the any one pair of the transmission lines also has cross connection.

Abstract: A crosstalk reduction method includes providing a signal transmission unit including first to eighth main transmission paths, the first and second paths, the third and sixth paths, the fourth and fifth paths and the seventh and eighth paths being respectively paired to transmit differential signals, providing a first coupling transmission path in the signal transmission unit, the first coupling transmission path being adapted to electrically couple the third main transmission path to the fifth and seventh main transmission paths that are located adjacent to the sixth main path, and providing a second coupling transmission path in the signal transmission unit, the second coupling transmission path being adapted to electrically couple the sixth main transmission path to the second and fourth main transmission path that are located adjacent to the third main transmission path.

Abstract: A signal detecting device includes a visualization device including a plural connectors to which a communication cable is connected, a plural detecting circuits that are provided for each of the connectors to be detected, branch and extract a part of a signal transmitted through the communication cable connected to the connectors, and indicate an existence of an data communication based on the extracted signal, and a detecting card that is insertable into and detachable from a card connector arranged in the visualization device and mounts at least a part of the detecting circuit.

Abstract: A repeater includes two connectors each including electrodes and configured to connect a communication cable through which a differential signal is transmitted, a circuit board on which the two connectors are mounted and which includes a signal transmission section configured to connect corresponding electrodes of the two connectors together, and a signal detection circuit mounted on the circuit board and configured to extract a part of a signal transmitted through the signal transmission section and indicate the presence or absence of information communication based on the extracted signal. The circuit board includes a multi-layer substrate including at least an inner layer in which the signal transmission section is formed, two shield layers configured to interpose the signal transmission section therebetween, and an outer layer outside the shield layer on which the signal detection circuit is mounted.

Abstract: A communication visualization device includes a transformer for converting a magnetic field caused from a LAN cable connected to an information communication apparatus into electric energy at time of information communication, an amplifier circuit for amplifying the electric energy output from the transformer, a rectifier circuit for converting an amplified signal amplified by the amplifier circuit into a DC voltage, and a light-emitting circuit for emitting light when the DC voltage obtained by conversion of the rectifier circuit is supplied thereto.