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second pit string

Translation of "second pit string" in Chinese

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第二槽串

Instead of the second pit string portion, it may be possible to arrange grooves.

也可设置凹槽，代替第二槽串部分。

For example, the second pit string portion is configured so that a high RF signal level of, e.g., about 0.7, can be obtained, with the settings of the spatial frequency, the pit string depth, the duty, and the like.

例如，所述第二槽串部分配置为，可通过空间频率、槽串深度、占空比等的设置获取高RF信号电平，例如，约0.7。

It is to be understood that, in the case of manufacture of the optical disk according to the third embodiment of Fig. 12, the laser is also emitted even in the portion corresponding to the high reflection rate region HA, and the second pit string portion is formed.

应理解的是，在制造根据图12的第三实施例的光盘的情况下，与高反射率区域HA对应的部分内也发出激光，形成第二槽串部分。

As shown in Fig. 12(b), a sufficient difference in the RF signal level is ensured between the first pit string portion and the second pit string portion.

如图12（b）所示，确保第一槽串部分与第二槽串部分之间的RF信号电平存在充分差别。

In the low reflection rate region LA, the same pit strings as those of the first embodiment are formed (first pit string portion). In the high reflection rate region HA, pit strings different from the first pit string portion are formed (second pit string portion).

在低反射率区域LA中，形成与第一实施例相同的槽串（第一槽串部分）。在高反射率区域HA中，形成与第一槽串部分不同的槽串（第二槽串部分）。

This gives an advantage in that it is possible to avoid a situation where the focal servo of the reproduction device becomes unstable because the RF signal level is too high. More specifically, when the RF signal level is high, a focus error signal may not be obtained appropriately depending on the reproduction device. When such situation is to be avoided, it is effective to somewhat reduce the RF signal level with the high reflection rate region HA being the second pit string portion like the present example.

其优点在于，可避免复制装置的聚焦伺服机构由于RF信号电平过高而变得不稳定的情况出现。更特别地，RF信号电平高时，可能不会依靠复制装置正确地获得聚焦错误信号。要避免这种情况，有效的方法是，在某种程度上降低RF信号电平，将高反射率区域HA作为与当前示例相同的第二槽串部分。

Manufacturing steps of the optical disk according to the embodiment will be explained. More specifically, it is the manufacturing steps when, in the BCA, the low reflection rate region LA is formed with the pit strings, or the high reflection rate region HA is formed as the mirror portion (or second pit string portion).

下文将对根据实施例的光盘的制造步骤进行说明。更特别地，制造步骤为：在BCA中，低反射率区域LA形成有槽串，或高反射率区域LA形成镜面部分（或第二槽串部分）。

As described above, even when both of the low reflection rate region LA and the high reflection rate region HA are formed with the pit strings, the appropriate BCA can be achieved if the sufficient difference in the RF signal level is ensured between the first pit string portion and the second pit string portion.

如上所述，即使低反射率区域LA和高反射率区域HA都形成有槽串，如果确保第一槽串部分与第二槽串部分之间的RF信号电平存在充分差别，仍可获得适当BCA。