Innovative method to create a bus based switching scheme for...

H - Electricity – 05 – K

Patent

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H05K 1/02 (2006.01) H04N 7/015 (2006.01) H05K 13/08 (2006.01) H01R 12/14 (2006.01)

Patent

CA 2719091

A controlled impedance bus includes a pair of bus traces that carry a transmission minimized differential signal (TMDS). Two or more buffer output terminals. Each output terminal includes a pair of pads connected to the pair of bus traces such that unused pads create minimal stubs on the pair of bus traces. Two or more buffer input terminals are provided. Each of the buffer input terminals includes a pair of connector traces that extend substantially perpendicular to the bus traces. At least one connector is connected to a first end of the pair of connector traces of one of the buffer input terminals. At least one buffer device is connected to a second end of the pair of connector traces and to the pair of pads of one of the buffer output terminals. The buffer device provides signals on the pair of bus traces when enabled by an enable input.

La présente invention concerne un bus à impédance contrôlée qui comporte une paire de tracés de bus véhiculant un signal TMDS (Transition Minimized Differential Signaling). L'invention comporte également plusieurs bornes de sortie de tampon dont chacune comporte une paire de plages de contact connectées à la paire de tracés de bus, de façon que les plages de contact non utilisées constituent sur la paire de tracés de bus des reliefs aussi réduits que possible. L'invention comporte aussi plusieurs bornes d'entrée de tampon dont chacune comporte une paire de tracés de connecteur qui sont disposés sensiblement perpendiculairement aux tracés de bus. L'un au moins des connecteurs est connecté à une seconde extrémité de la paire de tracés de connecteur et à la paire de plages de contact de l'une des bornes de sortie de tampon. Le dispositif tampon remet les signaux à la paire de tracés de bus lorsqu'une entrée de validation l'autorise.

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