Title: | A Gray Level Weighting Method to Reduce Optical Aberration Effect in Holographic Data Storage System |
Authors: | Ou-Yang, Mang Chen, Yu-Ta 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
Keywords: | Alignment method;fiducial point;gravity center;holographic data storage |
Issue Date: | 1-Mar-2011 |
Abstract: | An alignment method for holographic data storage system (HDSS) is proposed in this paper. Due to several types of noises encountered in the HDSS, the signal-to-noise ratio (SNR) is degraded. Errors can be corrected using a channel code for some sorts of noise, while it may require a high quality optical system to reduce the error probability for the other types of noise. A checkerboard pattern is proposed using intensity weighting to find the fiducial points, which could work in a lower SNR system and thus reduce the error likelihood effectively. Reed-solomon (RS) code and oversampling are both made available in the HDSS. As a consequence, the aberration effects are eliminated using the fiducial points, leading to a low SNR system clear of errors after performing decoding. The lowest SNR system is out of error-free recovery condition, so that all the alignment methods proposed in this paper could not reduce the aberration effects to restore the images into the original data. |
URI: | http://dx.doi.org/10.1109/TMAG.2010.2096462 http://hdl.handle.net/11536/463 |
ISSN: | 0018-9464 |
DOI: | 10.1109/TMAG.2010.2096462 |
Journal: | IEEE TRANSACTIONS ON MAGNETICS |
Volume: | 47 |
Issue: | 3 |
Begin Page: | 546 |
End Page: | 550 |
Appears in Collections: | Conferences Paper |
Files in This Item:
If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.