发明名称 |
Method and apparatus for detecting burst cutting area on optical disc |
摘要 |
An apparatus for detecting burst cutting areas on optical discs includes an optical pickup head, a front-end processing unit, a sync pattern detector, a channel clock recovery device, and a data demodulator. The front-end processing unit generates a BCA signal in response to a radio frequency signal. The sync pattern detector counts the BCA signal according to a reference clock, detects a sync pattern of the BCA signal and outputs a channel bit length counting value. The channel clock recovery device generates a channel clock according to the reference clock and the channel bit length counting value. The data demodulator transfers the BCA signal into a BCA data according to the channel clock. The sync pattern detector continuously counts the BCA signal and continuously outputs a plurality of counting values, so that the sync pattern of the BCA signal can be determined according to at least three sequential counting values. |
申请公布号 |
US8130607(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20090565357 |
申请日期 |
2009.09.23 |
申请人 |
CHANG CHIA-MING;LIU CHUN-NAN;YANG PING-CHIANG;SUNPLUS TECHNOLOGY CO., LTD. |
发明人 |
CHANG CHIA-MING;LIU CHUN-NAN;YANG PING-CHIANG |
分类号 |
G11B5/58;G11B5/09;G11B15/00;G11B20/14;G11B20/18 |
主分类号 |
G11B5/58 |
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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