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Proceedings Paper

Bit Shift Measurement and Overwriting in a Sampled Servo Format Magneto-Optical Recording
Author(s): K. Kataoka; N. Ohta; S. Yonezawa
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Paper Abstract

A new direct overwrite method, which uses oscillating laser pulses and magnetic field pulses modulated by code data, is demonstrated and the characteristics of bit shifts are discussed. A bit shift correction method is also demonstrated. In this method, preamble pits are written in the open space of the header area when data pits are recorded. In reconstruction, the phase of PLL clocks is adjusted automatically using the signal from the preamble pits.

Paper Details

Date Published: 19 May 1989
PDF: 8 pages
Proc. SPIE 1078, Optical Data Storage Topical Meeting, (19 May 1989); doi: 10.1117/12.952775
Show Author Affiliations
K. Kataoka, Hitachi Co., Ltd. (Japan)
N. Ohta, Hitachi Co., Ltd. (Japan)
S. Yonezawa, Hitachi Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 1078:
Optical Data Storage Topical Meeting
Gordon R. Knight; Clark N. Kurtz, Editor(s)

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