Pit phase compensating method for sample servo optical disk drive

Autor:	T. Furukawa, R. Oonishi, K. Nakane, Ryuichirou Arai
Rok vydání:	1989
Předmět:	Materials science Magnetic domain business.industry Phase (waves) Phase detector Electronic Optical and Magnetic Materials Optics Optical recording Demodulation Electrical and Electronic Engineering business Phase modulation Optical disc Servo
Zdroj:	IEEE Transactions on Magnetics. 25:3542-3544
ISSN:	0018-9464
DOI:	10.1109/20.42361
Popis:	A novel recording-reproducing method has been developed to eliminate the phase deviation of reproduced data signals from magnetooptical (MO) pits from the demodulation clock for sampled-servo-format rewritable optical disk drives. The magnitude of the phase shift was found by simulation and confirmed by experiments. The phase error required to keep demodulation error rate below a specific value was also found. The method consists of writing extra MO domains in the leading segment of a sector to be recorded before data are recorded. The domains are reproduced to determine the adequate amount of phase compensation when data are read. An evaluation of the proposed recording-reproducing method showed that the pit phase compensation method is effective for use in MO disk drives. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::41fc03decb82a6d7b662de5b687948ce https://doi.org/10.1109/20.42361 Zobrazit plný text záznamu