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PLACE ORGANISATION AND PLACE-LIKE SPECIAL MEDICINAL PRODUCT.

机译:地方性组织和地方性特殊药品。

摘要

The optical disc (1) has a record track (2), on which servo signal regions (3) and address signal regions (4) are formed alternately along the circumference. Two or more records using different physical changes are provided for the address signal regions (4), yet each region has only one means of physical change. For instance, one region is recorded in the form of pits and the next one is recorded opto-magnetically. switching between the two units is made when the pick-up is in the servo signal region, so leaving enough time margin for the operation.
机译:光盘(1)具有记录轨道(2),在其上沿圆周交替形成伺服信号区域(3)和地址信号区域(4)。为地址信号区域(4)提供了使用不同物理变化的两个或更多记录,但是每个区域只有一种物理变化方式。例如,一个区域以凹坑的形式记录,而下一个区域则以光磁方式记录。当拾取器位于伺服信号区域时,在两个单元之间进行切换,因此为操作留出了足够的时间余量。

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