Bit Shift Measurement and Overwriting in a Sampled Servo Format Magneto-Optical Recording

K. Kataoka; N. Ohta; S. Yonezawa

doi:10.1117/12.952775

19 May 1989 Bit Shift Measurement and Overwriting in a Sampled Servo Format Magneto-Optical Recording

K. Kataoka, N. Ohta, S. Yonezawa

Proceedings Volume 1078, Optical Data Storage Topical Meeting; (1989) https://doi.org/10.1117/12.952775
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

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.

Citation Download Citation

K. Kataoka, N. Ohta, and S. Yonezawa "Bit Shift Measurement and Overwriting in a Sampled Servo Format Magneto-Optical Recording", Proc. SPIE 1078, Optical Data Storage Topical Meeting, (19 May 1989); https://doi.org/10.1117/12.952775

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