发明名称 |
APPARATUS AND METHOD FOR GENERATING TRACKING ERROR SIGNAL |
摘要 |
<p>An apparatus and method for generating a tracking error signal (TES). A low level TES is prevented from being generated due to noise in an optical disk drive for reproducing a high-density multi-layered optical disk. The apparatus includes: an N-split optical reception element to receive light reflected by a disk loaded in the optical disk drive, a phase difference signal detection module to detect a plurality of phase difference signals using signals output from the N-split optical reception element, a pulse width modulation module to modulate pulse widths of the plurality of phase difference signals so that the pulse widths of the plurality of phase difference signals are magnified, and a difference detector to detect a difference between the plurality of phase difference signals whose pulse widths are modulated and outputting the detected difference as the TES. N may be a positive integer.</p> |
申请公布号 |
WO2008029991(A1) |
申请公布日期 |
2008.03.13 |
申请号 |
WO2007KR03663 |
申请日期 |
2007.07.31 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
OTSUKA, TATSUHIRO;LEE, KYUNG-GEUN;JEONG, AN-SIK;KIM, IN-JOO |
分类号 |
G11B7/09 |
主分类号 |
G11B7/09 |
代理机构 |
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地址 |
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