公开(公告)号：US20090003150A1

公开(公告)日：2009-01-01

申请号：US12003977

申请日：2008-01-04

申请人： Miller Yang ,  Wei-Ting Huang ,  Shih-Jung Huang

发明人： Miller Yang ,  Wei-Ting Huang ,  Shih-Jung Huang

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0908

摘要： A method for calibrating focus balance of an optical disk drive includes the steps of: zeroing a reference value; presetting a variable and a direction for calibrating the focus balance; generating a new C1C2 signal according to the preset variable for calibrating the focus balance; determining whether the value of the new C1C2 signal is larger than the value of a previous C1C2 signal or not by way of comparing, and changing the direction if yes or otherwise keeping the direction; and checking whether the value of the new C1C2 signal is larger than a threshold value C1C2T or not, and continuing calibrating the focus balance if yes or otherwise ending calibrating so that the focus balance can be rapidly achieved.

摘要翻译： 用于校准光盘驱动器的聚焦平衡的方法包括以下步骤：使参考值归零; 预设一个变量和校准对焦平衡的方向; 根据用于校准聚焦平衡的预设变量产生新的C1C2信号; 通过比较来确定新的C1C2信号的值是否大于先前的C1C2信号的值，并且如果是或保持方向则改变方向; 并且检查新的C1C2信号的值是否大于阈值C1C2T，并且如果是，则继续校准焦距平衡，或者否则结束校准，从而可以快速实现焦距平衡。

公开(公告)号：US20090003158A1

公开(公告)日：2009-01-01

申请号：US12003987

申请日：2008-01-04

申请人： Miller Yang ,  Shih-Jung Huang

发明人： Miller Yang ,  Shih-Jung Huang

IPC分类号： G11B5/09

CPC分类号： G11B20/1879 ,  G11B7/00458 ,  G11B19/041 ,  G11B20/1883 ,  G11B2020/1099 ,  G11B2020/183 ,  G11B2020/1893 ,  G11B2220/20 ,  G11B2220/2575

摘要： A writing method for an optical disk drive includes the following steps. First, a write command and to-be-written data are received from a host. Next, a speed down flag is checked. If the speed down flag is true, a writing speed is decreased; or otherwise the to-be-written data is written into a data area. Next, the written data is read, and accuracy of the written data is verified. If the written data is not accurate, accurate data is re-written into a spare area, and the number of times of re-writing is counted and checked. If the number of times of re-writing is greater than a predetermined threshold value, the speed down flag is changed to true; or otherwise the procedure goes back to the data-writing step to repeat the above-mentioned steps. If the written data is read and verified as accurate, a write-end status is reported back to the host.

摘要翻译： 光盘驱动器的写入方法包括以下步骤。 首先，从主机接收写入命令和被写入的数据。 接下来，检查减速标志。 如果减速标志为真，则写入速度降低; 否则将被写入的数据被写入数据区。 接下来，读取写入的数据，并且验证写入的数据的准确性。 如果写入的数据不准确，则将准确的数据重新写入备用区，并对重写次数进行计数和检查。 如果再写入次数大于预定阈值，则降档标志变为真; 或者否则该过程返回到数据写入步骤以重复上述步骤。 如果读取和验证书面数据的准确性，写入状态将被报告回主机。