Abstract: In a linked display system in which wireless communication connection between a first information device and a second information device has been established, when the first information device transmits text data to the second information device in a state of displaying content containing the text data and image data, the second information device displays the text data while the first information device stops displaying the text data and enlarges and displays the image data.

Abstract: A signal transmission medium for transmitting EHF band signals from a first point to a second point, including: a first end at which a signal exchange with the first point takes place; a second end at which a signal exchange with the second point takes place; and a transmission line portion which is flexible and connects the first end and the second end. The transmission line portion includes: strip conductors which are formed substantially down a center of a flexible printed circuit board to establish electrical connection between a signal line at the first end and a signal line at the second end; and a pair of grounding sheets which are arranged in parallel to each other at a substantially constant gap from the flexible printed circuit board in 180-degree opposite directions. The cavities are formed between the pair of grounding sheets and the strip conductors.

Abstract: A signal transmission medium for transmitting EHF band signals from a first point to a second point, including: a first end at which a signal exchange with the first point takes place; a second end at which a signal exchange with the second point takes place; and a transmission line portion which is flexible and connects the first end and the second end. The transmission line portion includes: strip conductors which are formed substantially down a center of a flexible printed circuit board to establish electrical connection between a signal line at the first end and a signal line at the second end; and a pair of grounding sheets which are arranged in parallel to each other at a substantially constant gap from the flexible printed circuit board in 180-degree opposite directions. The cavities are formed between the pair of grounding sheets and the strip conductors.

Abstract: Provided is an electromagnetic wave transmission medium which is suited for mass production and does not affect a transmission mode. The electromagnetic wave transmission medium includes, as a main element, a flexible cylindrical tube (1) molded so that a cross-sectional shape of the cylindrical tube in a direction orthogonal to a tube axis is uniform in a direction of the tube axis. The cylindrical tube (1) includes an inner wall formed of a conductive layer having a thickness equal to or more than a skin depth. The cross-sectional shape is a circular ridge waveguide shape having a ridge (1b) which is oriented to a cylindrical axis and is symmetric with respect to a center, and the ridge (1b) has a structure to be fed with electricity.

Abstract: A relay connector for electrically connecting a board and a coaxial connector including a shell GND, a dielectric member and a core conductor, includes: a conductive first block including a first surface from which the core conductor is projected and a second surface to which the shell GND is fixed, and provided with a guide pin extending in a first direction parallel to the first surface; a conductive second block including a board rest part on which the board is to be mounted and a guide hole into which the guide pin is inserted, and being electrically connected to the first block; an operating member, provided on the first block at an opposite side to the second block; an elastic member provided between the operating member and the first block in a contracted state; and a coupling member, one end of which is fitted into and fixed to a first groove of the second block, the other end of which is fitted into and fixed to a second groove of the operating member.

Abstract: A relay connector for electrically connecting a board and a coaxial connector including a shell GND, a dielectric member and a core conductor, includes: a conductive first block including a first surface from which the core conductor is projected and a second surface to which the shell GND is fixed, and provided with a guide pin extending in a first direction parallel to the first surface; a conductive second block including a board rest part on which the board is to be mounted and a guide hole into which the guide pin is inserted, and being electrically connected to the first block; an operating member, provided on the first block at an opposite side to the second block; an elastic member provided between the operating member and the first block in a contracted state; and a coupling member, one end of which is fitted into and fixed to a first groove of the second block, the other end of which is fitted into and fixed to a second groove of the operating member.

Abstract: A relay connector for electrically connecting a board and a coaxial connector including a shell GND, a dielectric member and a core conductor, includes: a conductive first block including a first surface from which the core conductor is projected and a second surface to which the shell GND is fixed, and provided with a guide pin extending in a first direction parallel to the first surface; a conductive second block including a board rest part on which the board is to be mounted and a guide hole into which the guide pin is inserted, and being electrically connected to the first block; an operating member, provided on the first block at an opposite side to the second block; an elastic member provided between the operating member and the first block in a contracted state; and a coupling member, one end of which is fitted into and fixed to a first groove of the second block, the other end of which is fitted into and fixed to a second groove of the operating member.

Abstract: Provided is an electromagnetic wave transmission medium which is suited for mass production and does not affect a transmission mode. The electromagnetic wave transmission medium includes, as a main element, a flexible cylindrical tube (1) molded so that a cross-sectional shape of the cylindrical tube in a direction orthogonal to a tube axis is uniform in a direction of the tube axis. The cylindrical tube (1) includes an inner wall formed of a conductive layer having a thickness equal to or more than a skin depth. The cross-sectional shape is a circular ridge waveguide shape having a ridge (1b) which is oriented to a cylindrical axis and is symmetric with respect to a center, and the ridge (1b) has a structure to be fed with electricity.

Abstract: A field effect transistor device is constituted by a semiinsulating substrate consisting of a compound semiconductor, an N type semiconductor layer formed on the substrate, a plurality of P type semiconductor gate regions aligned along a straight line and extending through the semiconductor layer to reach the substrate, source and drain electrodes disposed on the semiconductor layer on the opposite sides of the drain regions, a gate electrode having an ohmic contact with the gate regions and having a Schottky contact with the semiconductor layer interposed between the gate regions. Two gate regions on the opposite ends of the array are in contact with the boundary region of the transistor.The field effect transistor device is useful for fabricating an integrated circuit and consumes less electric power. Further it reduces dispersion in the gate pinch off voltage and can be prepared at a high yield.

Abstract: In a field effect semiconductor device comprising a semi-insulator layer composed of a semiconductor material, an N conductivity type active layer made of the same semiconductor material and acting as a channel, spaced cathode and anode electrodes formed on the active layer, the cathode electrode being in ohmic contact with the active layer, and means for applying drive voltage across the cathode and anode electrodes for varying the electrons flowing through the active layer so as to vary output current, a P conductive region is provided beneath the anode electrode and extending through the active layer toward to or penetrating into the semiconductor layer.

Abstract: A method of manufacturing a field effect transistor uses a semiinsulating substrate consisting of a compound semiconductor, and an N type semiconductor layer formed on the substrate. The method comprises the steps of implanting ions of a P type impurity from the main surface of said semiconductor layer to form at least two P type gate regions which extend from the main surface to substantially reach said substrate and are disposed with a predetermined interval, and sintering metallic layers on the gate regions in ohmic contact and on opposite sides of the semiconductor layers with said semiconductor gate regions being interposed therebetween to form a gate, a source and a drain electrodes. Said implantation step further comprises a step of positioning at least two of said gate regions such that said gate regions come in contact with the boundary region of the transistor to be constructed.