Abstract
Shingle recording experiments were conducted on a precision spin-stand using conventional recording components. Although both head and medium correspond to a 250 Gb/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> (Gigabits/sq. inch) product, the raw written densities were pushed beyond 1 Tb/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> (Terabits/sq. inch). High-resolution Magnetic-force microscopy (MFM) was used to examine the resulting written patterns. The MFM images have an apparent resolution down to 16 nm. From these images we are able to characterize the signal and noise in two dimensions up to the highest densities. Two-dimensional signal-processing was applied to the "waveforms" recovered from these MFM images. At the highest written densities, very poor raw error-rates were encountered and customer data could only be recovered successfully by employing relatively low rate codes. Although the experiments pushed the raw recording density to 1039 Gb/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , the highest customer information density at which data was successfully recovered was 623 Gb/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
