Position transducer
US6772088B2 · kind B2 · utility
1Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2003 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Feb 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2492
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position transducer capable of accurately detecting an n-bit code by a small number of ABS detectors when there is provided one ABS track. In an ABS head, the ABS detectors 101 to 10n+m are disposed for a distance &lgr;1 between the first ABS detector 101 and (n+m)th ABS detector 10n+m to satisfy a requirement (n−1)&lgr;+2&dgr;<&lgr;1 and a distance &lgr;2 between two successive ones of the ABS detectors to satisfy a requirement 2&dgr;<&lgr;2<&lgr;−2&dgr;, so that at least one ABS detector is opposite to a stable area T in each of micro-areas at n successive bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.