Multilevel read-only optical recording methods |
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Authors: | Song Jie Xu Duan-Yi Qi Guo-Sheng Hu Hu Zhang Qi-Cheng and Xiong Jian-Ping |
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Institution: | Optical Memory National Engineering Research Center, Department of Precision Instrument and Mechanics,Tsinghua University, Beijing 100084, China |
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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. |
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Keywords: | multilevel optical recording read-only amplitude modulation |
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