Read head with N-cycle switch for electrostatic discharge (ESD) protection
US6538857B1 · kind B1 · utility
17Cited by
4References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | May 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A read head is provided with an N-cycle switch for sequentially shorting and unshorting a sense current circuit of a read head so that the read head will be protected from electrostatic discharges (ESDs) by shorting when the read head is not being tested and unshorted during tests of the read head. The shorting and unshorting switches, which are mounted on or in a slider carrying the read head, are activated by a laser beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.