Magnetic field detecting apparatus
US7737688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2008 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Oct 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The magnetic field detecting apparatus is provided with: a magnetic field detecting unit for outputting one of two signals having different potential levels from each other in response to a perpheral magnetic field; an energizing control unit for producing a periodic energizing control signal indicative of timing at which the magnetic field detecting unit is energized by employing a clock signal and another signal obtained by frequency-dividing, or frequency-multiplying the clock signal, and for supplying the produced energizing control signal to the magnetic field detecting unit; a first inverting unit for inverting the potential level of the output signal of the magnetic field detecting unit; and an energizing time period control unit for supplying a time period control signal to the energizing control unit, the time period control signal controlling the time period of the energizing control signal in response to the potential level of the output signal of the magnetic field detecting unit, and the potential level of the signal obtained by inverting the potential level of the output signal by the first inverting unit. The energizing time period control unit supplies any one of tw…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.