Method of writing servo information on a storage medium and arrangement for writing servo information on a storage medium
AssigneeMarvell International Ltd.
InventorsWen Huei Jack Tsai, Siang Huei Leong, Baoxi Xu
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Abstract
According to embodiments of the present invention, a method of writing servo information on a storage medium is provided. The method includes applying heat to a servo portion of a storage medium, and applying a magnetic field to the servo portion that is heated to write servo information on the servo portion. According to further embodiments of the present invention, an arrangement for writing servo information on a storage medium and a method of forming a storage medium are also provided.
Claims14
A method of writing servo information on a storage medium, the method comprising:
- applying heat to a servo portion of a storage medium;
- applying a magnetic field to the servo portion that is heated to write servo information on the servo portion,
- wherein applying heat to a servo portion of a storage medium comprises irradiating the servo portion with a laser light;
- and
- splitting the laser light into a first light portion to irradiate the servo portion through a first surface of the storage medium, and a second light portion to irradiate the servo portion through a second surface of the storage medium, the second surface being opposite to the first surface.
An arrangement for writing servo information on a storage medium, the arrangement comprising:
- an optics arrangement configured to propagate a laser light;
- a mask configured to receive the laser light, the mask comprising:
- at least one transmissive portion configured to selectively pass a part of the laser light that is received to irradiate at least one region of a servo portion of a storage medium to heat the at least one region;
- and
- at least one non-transmissive portion configured to selectively block another part of the laser light that is received;
- and
- at least one magnet configured to generate a magnetic field to the servo portion for writing servo information on the servo portion,
- wherein the optics arrangement comprises a beamsplitter configured to split the laser light into a first light portion and a second light portion, wherein the optics arrangement is configured to propagate the first light portion through the mask to irradiate the servo portion through a first surface of the storage medium, and further configured to propagate the second light portion through another mask to irradiate the servo portion through a second surface of the storage medium, the second surface being opposite to the first surface.
Dependencies are inferred from the claim text.