发明名称 |
OPTICAL PICK-UP APPARATUS FOR MULTI RECODING/REPRODUCING |
摘要 |
<p>An optical pickup apparatus is provided for use in a recording/reproducing apparatus to record/reproduce information on/from recording media having different formats. Such an optical pickup apparatus comprises a dual wavelength laser diode; a hologram module arranged to split a light which is incident to a recording medium into a plurality of beams; and a photo-detector arranged to receive a light beam reflected from the recording medium and detect an information signal and a signal for servo control. Each of the split beams is focused on a predetermined position corresponding to a format of the recording medium. The light beams reflected from the recording medium are detected by the photo-detector to generate a focus error signal and a tracking error signal. Thus, the optical pickup apparatus records and reproduces information on and from recording media having different formats by using a hologram of a simple pattern. The optical structure of the optical pickup apparatus is simple which enables easy assembly and manufacture and provides signal regeneration when operating in a high temperature.</p> |
申请公布号 |
KR20050047162(A) |
申请公布日期 |
2005.05.20 |
申请号 |
KR20030080924 |
申请日期 |
2003.11.17 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
HEOR, TAE YOUN;KIM, BONG GI;PARK, CHUN SEONG;PARK, SEONG SU;PARK, SOO HAN |
分类号 |
G11B7/00;G11B7/12;G11B7/125;G11B7/13;G11B7/135;(IPC1-7):G11B7/135 |
主分类号 |
G11B7/00 |
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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