Data transmitting and receiving apparatus

Details Data transmitting and receiving apparatus Data transmitting and receiving apparatus

2007-03-20

2007-03-20

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

C340S538150

Reexamination Certificate

active

11284432

ABSTRACT:
In a TEDS system, a data transmitting and receiving apparatus is provided and a signal transmitted from a TEDS memory to an apparatus side is logically inverted without using a transformer, and further a sneak signal is prevented.Inverters28, 30and zener diodes32, 34connected in parallel between the TEDS memory and a data driver of the apparatus are provided. Data transmitted from the TEDS memory to an apparatus18side is logically inverted by the inverter28, and the logical voltage attenuates by a predetermined amount at the zener diode32to be supplied to the data driver. Since a sneak signal100whose logical voltage attenuates by a predetermined amount again by the zener diode34is supplied to the inverter30,the transmission of a logic value is prevented by setting the threshold of the inverter30appropriately.

REFERENCES:
patent: 5463340 (1995-10-01), Takabatake et al.
patent: 5666302 (1997-09-01), Tanaka et al.
patent: 5859584 (1999-01-01), Counsell et al.
patent: 6178080 (2001-01-01), Wilken et al.
patent: 6252503 (2001-06-01), Berger et al.
patent: 2005/0280408 (2005-12-01), Wobschall

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