Matsushita Electric Works, Ltd.

Shinji Morino

Koji Ikeda

Yoshihiro Tanigawa

Koji Yamashita

Masahiko Amano

Takao Sase

Hirohisa Okuno

Hirofumi Konishi

Yoshihiro Shogaki

Yoshiaki Ueno

Isao Shimada

Haruhiko Hyosu

Sadaaki Kondo

Haruo Ogawa

Masafumi Morimoto

Toshiaki Inage

Haruhiro Kuboyama

Kimitake Okugawa

A connector A includes a plurality of conductors. Each conductor consists of a contact 1, a terminal piece member 2, and a connecting conductor 3 connecting the contact 1 with the terminal piece member 2. The conductors are respectively held on a body 10 of the connector. The connecting conductors 3 are arranged in three layers in such a position relationship that can prevent them from short-circuiting each other and also can prevent a crosstalk from being produced between them. In this structure, the connecting conductors 3 are arranged in two or more levels, which makes it easier for the connector to be designed for prevention of the crosstalk when compared with a structure in which the connecting conductors 3 are arranged in one plane.

Connector

A modular jack telephone type connector has a housing which is associated with a carrier on which metal conductors are mounted on a top surface of the carrier, a wire positioning fixture which has wire openings for inserting electrical wires and a cavity for receiving terminals of the conductors and is supported in a hole on the top carrier surface allowing the fixture to move vertically in the hole with respect to the carrier, vertical fins which are mounted on the carrier mates vertical grooves which are provided on an opposite side of the wire openings of the fixture for additional secure positioning, a lever which is pivoted at the housing, rotating toward or away from the carrier, and coupled to the fixture via an interlock mechanism in order to transmit a rotational lever motion to the vertical fixture motion. As the lever rotates toward the carrier and pushes the fixture downward, wires inserted into the fixture meets precisely terminals through the cavity of the fixture for insulation displacement electrical contacts without using special termination tools.

Lever modular jack telephone type connector

A device used in a multimedia communication system is formed with a transceiver unit for transmitting and receiving information signal to and from the inside of a room and a base unit adapted to be mounted to a wall of the room to detachably support the transceiver unit. The transceiver unit has a plug surface on which a plug projects, a circular wall projecting on the plug surface to surround the plug, and a guide wall projecting on the plug surface inside the circular wall and around the plug. The base unit comprises a disk member which is provided with a receptacle exposed in a receptacle surface defined on the disk member. The disk member has a diameter slightly smaller than an inner diameter of the circular wall so that the disk member can fit within the circular wall when the transceiver unit is attached to the base. The disk member is formed in the receptacle surface with a guide groove of such a configuration that the guide wall is allowed to be inserted into the guide groove only when the guide wall opposes to the guide groove at a particular angular orientation where the plug comes to be connectable with the receptacle. The device can provide a safe and easy working condition for attaching the transceiver unit to the base unit.

Device for transmitting and receiving information signal in multimedia

A wireless transmission system includes a plurality of terminal units, a specific one of which is provided with a transmission/receiving circuit that transmits a reference signal of a local oscillation frequency, while all others of which are provided respectively with a transmission/receiving circuit that prepares, on the basis of the reference signal received, a local oscillation frequency signal for frequency conversion of transmitting/receiving frequency signal and intermediate frequency signal, to thereby realize the system at lower costs even when a high local oscillation frequency is employed.

Wireless transmission/reception system including transmitting terminal

Growing community of inventors

Kadoma, Japan

Shinji Morino