发明名称 |
Information recording/reproducing apparatus for writing on and reading from a rewritable optical disk have tracks divided into a plurality of sectors |
摘要 |
An information recording/reproducing apparatus is suitable for writing on and reading from a rewritable optical disk signals having a time-based continuity attribute such as video signals and audio signals. The optical disk has a plurality of tracks each divided into sectors. The apparatus has a RAM for storing data externally supplied, and first and second address counters for generating addresses for writing into and reading from the RAM, respectively. The apparatus also has a track-jump detector circuit for detecting the occurrence of a track jump of an optical head while the head is writing on the disk. When a track jump is detected, a laser driving circuit stops actuating the head such that the writing operation is halted, and a track-jump address latch circuit stores an address of a track-jump occurring sector. Based on the address stored in the track-jump address latch circuit and a track address where the head is actually is, the head is returned to the sector where the track jump occurred. Then, under control of a CPU, the second address counter again generates addresses at which the RAM stores data which should have been written on the track-jump occurring sector from its leading position. Thus, even if a track jump occurs, information having a time-based continuity attribute is recorded without any data loss.
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申请公布号 |
US5214626(A) |
申请公布日期 |
1993.05.25 |
申请号 |
US19910753886 |
申请日期 |
1991.09.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SATOH, ISAC;FUKUSHIMA, YOSHIHISA;TAKAGI, YUJI;AZUMATANI, YASUSHI;HAMASAKA, HIROSHI |
分类号 |
G11B7/085;G11B7/0045;G11B19/02;G11B20/10 |
主分类号 |
G11B7/085 |
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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