Analysis of Signal-to-Noise Ratio in Photochromic Super-Resolution Readout |
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| Authors: | Tsuyoshi Tsujioka Minoru Kume Masahiro Irie |
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| Institution: | (1) New Materials Research Center, SANYO Electric Co., Ltd., 1-18-13, Hashiridani, Hirakata-City, Osaka 573, Japan;(2) Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 6-10-1, Hakosaki, Higashi-ku, Fukuoka 812, Japan |
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| Abstract: | The signal-to-noise ratio (SNR) in the photochromic super-resolution readout of optical disks was theoretically analyzed. The shot noise limited SNR, such as that in magnetooptical disks, was improved only for the short recorded mark. However, the media noise limited SNR, such as that in phase change disks, was greatly improved for both short and long recorded marks. |
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| Keywords: | optical disk photochromism high-density recording super-resolution signal-to-noise ratio shot noise media noise |
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