Open AccessMulti-level read-only recording using signal waveform modulation
Author(s) -
Yi Tang,
Jing Pei,
Yi Ni,
Longfa Pan,
Hua Hu,
Buqing Zhang
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.006156
Subject(s) - waveform , modulation (music) , signal (programming language) , computer science , amplitude , pulse amplitude modulation , frequency modulation , amplitude modulation , signal processing , replication (statistics) , optics , electronic engineering , acoustics , telecommunications , bandwidth (computing) , physics , digital signal processing , computer hardware , pulse (music) , engineering , mathematics , radar , detector , programming language , statistics
A novel multi-level read-only recording using signal waveform modulation (SWM) is presented. The SWM is realized by inserting a sub-pit/sub-land to the original land/pit. Numerical simulation provides a helpful tool for the write strategy optimization. This method is experimentally validated on the DVD platform. Comparing with 2-level recording, an increase of 50% in capacity can be expected. It shows superiority over signal amplitude modulation (SAM) multi-level in replication processing, capacity increase and servo performance.