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Chinese Physics, 2006, Vol. 15(8): 1788-1792    DOI: 10.1088/1009-1963/15/8/026
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Multilevel read-only optical recording methods

Song Jie(宋洁), Xu Duan-Yi(徐端颐), Qi Guo-Sheng(齐国生), Hu Hua(胡华), Zhang Qi-Cheng(张启程), and Xiong Jian-Ping(熊剑平)
Optical Memory National Engineering Research Center, Department of Precision Instrument and Mechanics,Tsinghua University, Beijing 100084, China
Abstract  The advantages of read-only storage is the predominance of optical recording relative to magnetic and other rewritable methods. Multilevel (ML) read-only technology has been a trend to improve the data capacity and transfer rate. Based on the principle and coding method of ML, this paper demonstrates some ML read-only recording methods, of which a new ML read-only recording is developed. This recording method integrates amplitude modulation achieved by the reaction mechanism of physics and chemistry of photoresist with the run-length-limited technology. The discs can be achieved using standard photoresist mastering and replication techniques with great compatibility to conventional binary read-only discs.
Keywords:  multilevel optical recording      read-only      amplitude modulation  
Received:  29 November 2005      Revised:  08 May 2006      Accepted manuscript online: 
PACS:  42.79.Vb (Optical storage systems, optical disks)  
  42.82.Cr (Fabrication techniques; lithography, pattern transfer)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60577035).

Cite this article: 

Song Jie(宋洁), Xu Duan-Yi(徐端颐), Qi Guo-Sheng(齐国生), Hu Hua(胡华), Zhang Qi-Cheng(张启程), and Xiong Jian-Ping(熊剑平) Multilevel read-only optical recording methods 2006 Chinese Physics 15 1788

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