DIGITAL INFORMATION REPRODUCING METHOD

摘要: PROBLEM TO BE SOLVED: To provide a data reproduction method for identifying characteristic error patterns and using parity check codes in conformity with run-length limited coding to carry out efficient reliable correction, order solve the problem that an optical disc super-resolution effects achieves higher-density recording exceeding resolution suffers from signal-quality degradation caused by normal component included signal. SOLUTION: Error crosstalk are localized leading edges of mark following long space trailing mark. Whether exists is determined use codes. When occurs, pattern which most likely occur selected above taking account edge shift direction, then therein corrected. COPYRIGHT: (C)2009,JPO&INPIT