Input/output signal controller

Electronic digital logic circuitry – Interface – Current driving

Reexamination Certificate

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Details

C326S030000, C326S086000, C327S379000

Reexamination Certificate

active

07911232

ABSTRACT:
To easily judge a transmission signal outputted from an own electronic device. A transmission part7outputs a transmission signal to a transmission path1side. Switching parts Q1and Q2are connected between a constant voltage power source and the transmission path1, to switch on/off of a signal supplied from the constant voltage power source, being the transmission signal from the transmission part7, and output it to the transmission path1. A reception part9receives the transmission signal from the transmission path1. A detection part13is connected between the constant voltage power source and the switching parts Q1, Q2, to detect the transmission signal from the transmission part7flowing through the switching parts Q1and Q2. A selection part15selects the reception part9, when the transmission signal from the transmission part7is not detected by the detection part13.

REFERENCES:
patent: 4496541 (1985-01-01), Huang et al.
patent: 7151390 (2006-12-01), Nguyen et al.
patent: 2002/0135396 (2002-09-01), Kiehl
patent: 2007/0080716 (2007-04-01), Strangfeld et al.
patent: 61-089741 (1986-05-01), None
patent: 5-153099 (1993-06-01), None
patent: 10-294750 (1998-11-01), None
International Search Report of PCT/JP2008/062734, Mailing Date of Oct. 14, 2008.

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