14 January 1987 On-Land Composite Pregroove Method For High Track Density Recording
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Abstract
In optical disk systems using push-pull tracking method, there have been problems of tracking offset errors caused by a disk skew and low signal-to-noise ratio due to a surface noise of the pregrooved area. In order to achieve higher track density recording, these problems have to be solved. We have developed a new type of on-land composite pregroove method for higher track density recording. In this method, the header data and the user data are recorded on the land area between two pregrooves on the disk. Each pregroove has 10-20 of tracking offset detection flags once per sector at each header area.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yoshito Tsunoda, Yoshito Tsunoda, Toshimitsu Kaku, Toshimitsu Kaku, Shigeru Nakamura, Shigeru Nakamura, Takeshi Maeda, Takeshi Maeda, } "On-Land Composite Pregroove Method For High Track Density Recording", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936841; https://doi.org/10.1117/12.936841
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