Patent · US Active

Dual-layer magnetic recording

US9858950B1 · kind B1 · utility

4Cited by

4References

19Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Thomas Bueck · Mainz, DE
Michael Diederich · Mainz, DE
Thorsten Muehge · Mainz, DE
Erik Rueger · Mainz, DE

Key dates

Filing date	Oct 26, 2016
Grant date	Jan 2, 2018
Priority date	—
Expiry date	Oct 26, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG11B2005/0021
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus for increasing storage capacity on magnetic media. A dual-layer magnetic recording apparatus receives, a write operation instruction, bit position and bit value where the bit position includes a media surface position and magnetic media layer identifier. The dual-layer magnetic recording apparatus accesses a dual-layer magnetic media where the dual-layer magnetic media includes a first magnetic media layer with a thermally controllable coercivity, a second magnetic media layer and a separation layer. The magnetic layer identifier is determined to associated with be the first magnetic media layer or the second magnetic media layer. When the magnetic layer identifier is the second magnetic media layer, the bit value is written based on magnetically charging the second magnetic media layer and when the magnetic layer identifier is the first magnetic media layer the bit value is written based on heating and magnetically charging the first magnetic media layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.