Abstract:
Eine Rückverdrahtungsplatine (3) für elektronische Steckbaugruppen ist an mindestens einer Modulschiene (2) eines Baugruppenträgers befestigbar. Die Rückverdrahtungsplatine (3) ist in gleichartige Abschnitte (4) unterteilt. Sie hat Randbereiche (5) und Signalanschluss-Felder (7), zwischen denen Stromanschluss-Felder (8) von Stromversorgungsanschlüssen (9) vorgesehen sind. Anschlussstücke (11) mit Kontaktstiften (12) sind mit den Stromversorgungsanschlüssen (9) kontaktiert. Die Stromversorgungsanschlüsse (9) eines Stromanschluss-Feldes (8) sowie die Kontaktstifte (12) des zugehörigen Anschlussstückes (11) sind miteinander korrespondierend in Form eines U angeordnet, wobei der U-Rücken zu dem benachbarten Signalanschluss-Feld (7) weist.
Abstract:
A data processing system includes a backplane and a plurality of logic boards connected to the backplane by a plurality of connectors. In one embodiment of the invention, a set of common points (23, 24) is electrically coupled to the connectors by individual conductive traces between each common point (23) and the corresponding pins (31-36) of the connectors. The common points are preferably centrally located among the plurality of connectors to reduce propagation delay. A connector (75) can be attached at the common points. The traces are separated from each other by lateral displacement in a single plane. If the backplane is a multi-layered printed circuit board, the traces are separated from each other by vertical displacement between the layers of the printed circuit board or by both vertical and horizontal displacement. The traces to the connectors nearest the common points (83) have a minimum length (96) greater than the distance (92) between the nearest connectors and the common points.
Abstract:
Interlayer connections (3) for internal signal paths of the printed circuit board (1) are combined in groups and preferably situated in the shielding zone of shielded connectors for shielding cable to be plugged in. This arrangement insulates the interlayer connections (3) against high frequencies.
Abstract:
A contact assembly with at least one signal contact and at least one ground contact, in particular for use in a connector or the like, comprises a support of resilient conductive material, an insulating intermediate layer provided on the support and at least one signal conductor supported on the insulating intermediate layer. The support is used as ground conductor and two or more adjacent contact pads are provided for each signal conductor or each group of signal conductors adjacent a first edge of the support. One contact pad is connected with the support and the other contact pad(s) is (are) connected to the respective signal conductors.
Abstract:
Disclosed is a radial type of parallel system bus structure using bus wire-printed disks (15) each having printed signal conductors (7) of equal length extending radially from a common contact centre . Each printed signal conductor comprises two twisted conductor lines, and each conductor line consists of many segments disposed alternately on opposite surfaces of the disk, the successive segments of each line being connected by plating in through-holes(10) in the disk. The radial arrangement of signal conductors permits connection of selected CPU boards via equal length of signal path. Also, the use of twisted conductor lines improves the signal transmission characteristics of the bus in high-frequency range.
Abstract:
Disclosed is a radial type of parallel system bus structure using bus wire-printed disks (15) each having printed signal conductors (7) of equal length extending radially from a common contact centre . Each printed signal conductor comprises two twisted conductor lines, and each conductor line consists of many segments disposed alternately on opposite surfaces of the disk, the successive segments of each line being connected by plating in through-holes(10) in the disk. The radial arrangement of signal conductors permits connection of selected CPU boards via equal length of signal path. Also, the use of twisted conductor lines improves the signal transmission characteristics of the bus in high-frequency range.