Floating data interface

Details Floating data interface Floating data interface

1992-12-11

1995-03-21

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324126, G01R 104

Patent

active

053999657

ABSTRACT:
A floating data interface, particularly for integrated circuits, is formed by a Hall-effect arrangement that includes a Hall-voltage-measuring device and a current-carrying coupling loop whose current is controlled by a data source. Because of the low internal resistance of the coupling loop, a plurality of such interfaces can be connected in series, and the individual circuits selected by addresses. Bidirectional data transfer via the floating interface is accomplished by an interrupter stage which interrupts the current flow on the bus line in an interrogation interval during one clock period and forces a predetermined mark/space ratio.

REFERENCES:
patent: 4764922 (1988-08-01), Deiter et al.
patent: 5239580 (1993-08-01), Bruno et al.
Patent Abstract of Japan, vol. 011, No. 363 (E-560), 26, Nov., 1987 & JP-A-62 136 145 (Fuji Facom Corp.) 19, Jun., 1987.
Powerconversion & Intelligent Motion, Bd. 15, Nr. 5, May 1989, Vnetura, Calif. US Seiten 70-74, R. Vig Smart Sensor Provides Magnetic Detection with Simplified System Wiring.
Klaus Fischer, "Drehzahlerfassung mit Differenz-Hall-IC," Elektronik, Apr. 1991, pp. 86, 95-97.

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