Multiple-interface port multiplexer

Details Multiple-interface port multiplexer Multiple-interface port multiplexer

2006-11-14

2006-11-14

Vu, Huy D. (Department: 2616)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S412000

Reexamination Certificate

active

07136379

ABSTRACT:
A device for interconnecting and multiplexing a plurality of interfaces is disclosed. In the preferred embodiment, three serial communications ports are interfaced such that any two may be interconnected for communications. A novel circuit comprising a plurality of buffers is employed to allow selection of the interconnection scheme by a controller. The design is scalable and is characterized by low cost, low printed circuit board area requirements, and graceful function. In the preferred embodiment, a PDA, wireless transceiver, and cradle interface of a personal communications device are effectively interconnected and multiplexed.

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patent: 5933449 (1999-08-01), Meyer
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patent: 6138185 (2000-10-01), Nelson et al.
patent: 6195335 (2001-02-01), Calvignac et al.
patent: 29820191 (1999-01-01), None
patent: 0505695 (1992-09-01), None
patent: 0723233 (1996-07-01), None

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