Input-output device and control method thereof

Details Input-output device and control method thereof Input-output device and control method thereof

2007-02-02

2010-02-02

Sorrell, Eron J (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output expansion

C710S062000, C326S026000

Reexamination Certificate

active

07657660

ABSTRACT:
The present invention provides an input/output device capable of bringing a per-unit input/output circuit into a simple configuration without impairing reliability even when logic levels opposite in polarity are outputted between input/output devices made conductive to the outside. The input/output device is equipped with one reference port Pk selected from a port group which inputs and outputs signals, target ports Pt selected from other than the reference port of the port group, and a conduction detector which detects that conduction is made between input/output terminals for the reference port Pk and the target ports Pt.

REFERENCES:
patent: 5692917 (1997-12-01), Rieb et al.
patent: 61-156918 (1986-07-01), None

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