US 11,935,572 B2
Increased storage capacity for a method for long-term storage of information and storage medium therefor
Christian Pflaum, Bernried (DE); and Martin Kunze, Gmunden (AT)
Assigned to Ceramic Data Solutions GmbH, Gmunden (AT)
Appl. No. 18/003,959
Filed by Ceramic Data Solutions GmbH, Gmunden (AT)
PCT Filed Jul. 3, 2020, PCT No. PCT/EP2020/068892
§ 371(c)(1), (2) Date Dec. 30, 2022,
PCT Pub. No. WO2022/002418, PCT Pub. Date Jan. 6, 2022.
Prior Publication US 2023/0260546 A1, Aug. 17, 2023
Int. Cl. G11B 7/24 (2013.01)
CPC G11B 7/24 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for storage of information, comprising:
providing a ceramic substrate of a first material;
coating the ceramic substrate with at least one layer each of a second material different from the first material; and
creating a plurality of recesses in the at least one layer by using a laser in order to encode information in the at least one layer,
wherein the plurality of recesses have different depths, and
wherein each depth corresponds to a predefined bit of information.