Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2006-01-10
2009-06-09
Jung, Min (Department: 2416)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C330S252000, C327S407000
Reexamination Certificate
active
07545834
ABSTRACT:
A switch fabric that carries analog differential signals is constructed from 2×2 switches. Each 2×2 switch has two differential inputs that are applied to two demultiplexers. Each 2×2 switch also has two differential outputs, each driven by an equalizing mux. Each demultiplexer has two amplifiers that drive intermediate differential signals to the two equalizing muxes. Each equalizing mux has two equalizers that receive the intermediate differential signals from the two demultiplexers. A select signal enables one equalizer but disables the other to select one of the two intermediate differential inputs. A combining amplifier receives differential outputs from both equalizers and generates a final differential output. R, C values in each equalizer can be adjusted to compensate for loading variations in the intermediate differential signals which can have different physical lengths in a switch fabric.
REFERENCES:
patent: 4149037 (1979-04-01), Langan
patent: 4191856 (1980-03-01), Nagano et al.
patent: 4695749 (1987-09-01), Lam
patent: 4866306 (1989-09-01), Hopta
patent: 4905238 (1990-02-01), Rinaldis
patent: 5289048 (1994-02-01), Ishihara et al.
patent: 5808487 (1998-09-01), Roy
patent: 6104236 (2000-08-01), Tsinker
patent: 6137340 (2000-10-01), Goodell et al.
patent: 6275435 (2001-08-01), Su et al.
patent: 6366320 (2002-04-01), Nair et al.
patent: 6489845 (2002-12-01), Maschhoff
patent: 6779007 (2004-08-01), Chen
patent: 6911855 (2005-06-01), Yin et al.
patent: 7026865 (2006-04-01), Arguelles
patent: 2003/0185250 (2003-10-01), Harberts et al.
patent: 2004/0125678 (2004-07-01), Sinha et al.
patent: 2005/0195032 (2005-09-01), Wang et al.
Guo Zhangqi
Tam Anna
Auvinen Stuart T.
gPatent LLC
Jung Min
Pericom Semiconductor Corp.
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