Multi-jack detector

Details Multi-jack detector Multi-jack detector

2006-07-04

2006-07-04

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S555000, C324S066000, C379S442000

Reexamination Certificate

active

07071702

ABSTRACT:
A multi-jack detector for detecting states of a plurality of jacks. Each jack comprises a first switch having a first normally closed terminal and a first output terminal. The multi-jack detector comprises a plurality of bias resistors each coupled to one of the first output terminals, respectively; a control unit for determining the states of the plurality of jacks; wherein the first normally closed terminals are commonly coupled to a first node and the control unit determines the states of the plurality of jacks according to a voltage at the first node. Because the voltage at the first node is different for each state of the jacks, the detector can detects the states of the jacks using a single I/O pin.

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patent: 6763087 (2004-07-01), Chen et al.
patent: 2003/0139204 (2003-07-01), Lim
patent: 2004/0108845 (2004-06-01), Shieh et al.
patent: 2002-101491 (2002-04-01), None
patent: 578345 (2002-12-01), None

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