Circulating switch

Details Circulating switch Circulating switch

2005-07-21

2010-12-21

Ton, Dang T (Department: 2475)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S360000, C370S370000, C370S372000, C370S380000

Reexamination Certificate

active

07856010

ABSTRACT:
A circulating switch comprises switch modules of moderate capacities interconnected by a passive rotator. Data is sent from a one switch module to another switch module either directly, traversing the rotator once, or indirectly through at least one intermediate switch module where the rotator is traversed twice. A higher capacity extended circulating switch is constructed from higher-capacity switch modules, implemented as common memory switches and having multiple ports, interconnected through a multiplicity of rotators preferably arranged in complementary groups of rotators of opposite rotation directions. A polyphase circulating switch having a low switching delay is derived from a multi-rotator circulating switch by providing programmable rotators having adjustable relative rotator-cycle phases. A low delay high-capacity switch may also be constructed from prior-art medium-capacity rotator space switches with mutually phase-shifted rotation cycles.

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