Device for the detection quadrature signals
US8461826B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 23, 2008 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Mar 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2451
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device (10) for the detection of quadrature signals of a signal unit (11; 21) has a common power supply line (VBATT_A & B) and a common ground wire (GND), and emits at least two out-of-phase square wave signals (IA, IB; IS, ID) during operation for analyzing the same in an analysis unit (16), wherein both out-of-phase square wave signals (IA, IB; IS, ID) are applied to the common power supply line (VBATT_A & B) at different amplitudes, wherein the two out-of-phase square wave signals (IA, IB; IS, ID) are modulated onto the supply current (I0)), and wherein the analysis unit (16) is or can be connected to the power supply line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.