Fujitsu Corporation

Hidenao Nakajima

Yoshimi Watanabe

Naoki Matsuoka

Hiroshi Tomonaga

Masafumi Katoh

Masaaki Kawai

Hitoshi Yokemura

Hiroyuki Otaguro

Takayuki Ashida

Shuuhei Fujita

A circuit board packaging structure comprises a plurality of circuit boards disposed in parallel to each other and each packaged with electric circuit parts. The circuit board packaged with electric circuit parts exhibiting a larger exothermic quantity than those of the electric circuit parts packaged on the other circuit boards is disposed outermost among the plurality of circuit boards. The surface of the circuit board packed with the electric circuit parts exhibiting the larger exothermic quantity is directed outside the structure.

Circuit board packaging structure

A plurality of switching modules arrayed in a plurality of columns and in at least one row switch over paths in accordance with path data contained in cells to transfer inputted data to a target line on the cell-unit. One or more path switching units are provided between two adjacent columns of switching modules among plural columns of switching modules and switch paths between the respective switching modules, disposed in a side-by-side relationship in a row direction, of one column of switching modules of the two adjacent columns of switching modules and the respective switching modules, disposed in the side-by-side relationship in the row direction, of the other column of the two adjacent columns of switching modules.

ATM switch and method for switching path by ATM switch

A coaxial conversion connector adapted to be detachably connected to a mating connector of an electronic device having a frame ground portion electrically connected to a frame ground in the vicinity of the mating connector, the mating connector having a plurality of first connecting portions. The coaxial conversion connector includes a coaxial jack adapted to receive a coaxial cable having one end equipped with a coaxial plug, the coaxial jack having a cylindrical first metal member adapted to be electrically connected through the coaxial plug to an outer conductor of the coaxial cable, and a second metal member adapted to be electrically connected through the coaxial plug to a central conductor of the coaxial cable; a plurality of second connecting portions electrically connected to both the first metal member and the second metal member, the second connecting portions being adapted to be respectively electrically connected to the first connecting portions of the mating connector; an FG contact member provided in the vicinity of the second connecting portions, the FG contact member being formed from an elastic metal member adapted to come into pressure contact with the frame ground portion of the electronic device; and an FG switching mechanism for switching continuity and discontinuity between the outer conductor of the coaxial cable and the FG contact member.

Coaxial conversion connector

Growing community of inventors

Kawasaki, Japan

Hidenao Nakajima