Patent · US Expired

Method and circuit configuration for controlling operating states of a second device by means of a first device

US5994931A · kind A · utility

6Cited by

3References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Stefan Heinen · Krefeld, DE
Udo Matter · Düsseldorf, DE
Abdul-Karim Hadjizada · Ratingen, DE

Key dates

Filing date	Jan 21, 1998
Grant date	Nov 30, 1999
Priority date	—
Expiry date	Jan 21, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02D30/50
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The ON and OFF states of a second device are controlled by a first device through a three-conductor bus. The bus carries data, clock, and enable signals and the second device is in the OFF state when all the signals of the three-conductor bus have an L level. The second device is in the ON state when at least one of the signals has an H level (higher potential than the L level). The enable signal is set to the H level during the data transmission. Otherwise, it carries an L level, while the data or clock signal has an H level. The system obviates an additional housing pin. The operating state information is transmitted relatively rapidly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.