Controlling a heat resistive element with a pulse modulated signal
US8159771B2 · kind B2 · utility
2Cited by
10References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2007 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Nov 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure is related to pulse width modulating a power signal to a heat resistive element of a transducer. The power signal may be a power output signal of preamplifier. The power signal may be provided to a heat resistive element in a transducer that is operable to read data from or write data to a data storage medium. The pulse width modulated power signal can allow for controlling the heating of the heat resistive element based on a thermal time constant of the heat resistive element and based on adjustable components of the pulse width modulated power signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.