发明名称 |
Information recording/reproducing apparatus for handling defective sectors on an optical disk |
摘要 |
Disclosed is an information recording/reproducing apparatus which uses a rewritable recording medium having a sector structure, and in which a data writing gate signal and a data erasing gate signal are reproduced on the basis of an ID detection signal of a target sector, while a data reading gate signal and a marking gate signal are produced on the basis of the ID detection signal of the target sector or on the basis of an ID detection signal of a sector located N sectors before the target one, so that when data is to be renewed in a specific sector from which no ID detection signal can be obtained, marking is performed in the specific sector on the basis of an ID detection signal of a sector located N sectors before the specific sector and new data are rewritten into a substitutive sector, whereby it is possible to perform data erasing and data recording in a target sector with high reliability and high positional accuracy and it is possible to shorten gaps respectively in front and rear of a data field to thereby make it possible to efficiently use a data area.
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申请公布号 |
US4833663(A) |
申请公布日期 |
1989.05.23 |
申请号 |
US19870003820 |
申请日期 |
1987.01.16 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SATOH, ISAO;ICHINOSE, MAKOTO;FUKUSHIMA, YOSHIHISA;KUROKI, YUZURU;TAKAGI, YUJI |
分类号 |
G11B19/04;G11B27/034;G11B27/036;G11B27/30 |
主分类号 |
G11B19/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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