公开(公告)号：US4672600A

公开(公告)日：1987-06-09

申请号：US835927

申请日：1986-03-04

申请人： Neil K. Balston ,  Keith D. Anderson ,  Herman W. Willemsen

发明人： Neil K. Balston ,  Keith D. Anderson ,  Herman W. Willemsen

IPC分类号： G06K7/10 ,  G11B7/24 ,  G11B23/30 ,  G11B27/19 ,  G11B23/00 ,  G11B7/00

CPC分类号： G06K7/10861 ,  G11B23/30 ,  G11B27/19 ,  G11B7/0901 ,  G11B7/24056

摘要： An optical disc assembly has an optical disc and a protective cover. The optical disc has a surface adapted to have optically recorded thereon data consisting of a series of laser ablated pits recorded as a series of concentric data tracks. The pits have small size and high surface density. The protective cover has a permanent optical recording at one surface thereof consisting of a series of visible marks. The marks are an order of magnitude larger than the pits and have a much lower surface density. Memory data is recorded on the optical disc and positional data, comprising a map of the memory data surface, is recorded on the cover. This allows the use of separate positional data and memory data monitoring channels which facilitates the recording of a blank optical disc and subsequent memory data access.

摘要翻译： 光盘组件具有光盘和保护盖。 光盘具有适于在其上光学记录的数据，其由记录为一系列同心数据轨道的一系列激光烧蚀凹坑组成。 凹坑具有小尺寸和高表面密度。 保护盖在其一个表面上具有由一系列可见标记组成的永久光学记录。 标记比凹坑大一个数量级，并且具有低得多的表面密度。 存储器数据被记录在光盘上，并且包括存储器数据表面的映射的位置数据被记录在盖上。 这允许使用分开的位置数据和存储器数据监视通道，便于记录空白光盘和随后的存储器数据存取。