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1. 发明授权

US07403458B2 Compatible optical pickup and light output amount detecting method performed in the compatible optical pickup 有权
标题翻译：兼容的光学拾取和光输出量检测方法在兼容光学拾取器中执行
公开(公告)号：US07403458B2
公开(公告)日：2008-07-22
申请号：US10766328
申请日：2004-01-29
申请人： Ji-hwan Lim , Ju-hyung Lee , Pyong-yong Seong , Eun-goo Kim , Chun-gi Kim , Kyoung-hwan Park
发明人： Ji-hwan Lim , Ju-hyung Lee , Pyong-yong Seong , Eun-goo Kim , Chun-gi Kim , Kyoung-hwan Park
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/123 , G11B7/1275 , G11B2007/0006
摘要： A compatible optical pickup, including first and second light sources for emitting lights with different wavelengths and first and second photodetectors for detecting an information signal and/or an error signal, and a method of detecting the amount of output light using the compatible optical pickup. The first and second photodetectors monitor the amount of light output from the second and first light sources respectively such that no extra front photodetectors are required. Thus, the number of optical component parts included in the optical pickup can be reduced, thereby lowering the manufacturing costs for the optical pickup. Also, there is no need to secure a space in a base where a front photodetector is to be installed, so the base is simplified. Thus, inferior moldings are reduced, and the durability of a mold can be prolonged.
摘要翻译：一种兼容的光学拾取器，包括用于发射具有不同波长的光的第一和第二光源以及用于检测信息信号和/或误差信号的第一和第二光电检测器，以及使用兼容光学拾取器检测输出光量的方法。第一和第二光电检测器分别监测从第二和第一光源输出的光量，使得不需要额外的前光检测器。因此，可以减少包括在光学拾取器中的光学部件的数量，从而降低光学拾取器的制造成本。此外，不需要固定要安装前光电检测器的基座中的空间，因此基座被简化。因此，较差的模制品减少，并且可以延长模具的耐久性。

2. 发明授权

US07420895B2 Signal detection method and apparatus and optical recording and/or reproducing apparatus using the same 有权
标题翻译：信号检测方法及装置以及使用其的光学记录和/或再现装置
公开(公告)号：US07420895B2
公开(公告)日：2008-09-02
申请号：US10746147
申请日：2003-12-29
申请人： Eun-goo Kim , Chun-gi Kim , Kyoung-hwan Park , Ji-hwan Lim
发明人： Eun-goo Kim , Chun-gi Kim , Kyoung-hwan Park , Ji-hwan Lim
IPC分类号： G11B7/00
CPC分类号： G11B7/0903
摘要： A method and apparatus for detecting a signal to determine on-track/off-track and/or a track cross direction, using a detection signal corresponding to a reflected main light beam and detection signals respectively corresponding to reflected first and second sub light beams, and an optical recording and/or reproducing apparatus using the same are provided. When detection signals respectively corresponding to one side portions, in a direction corresponding to a radial direction of the optical information storage medium, of the respective main light beam and first and second sub light beams are referred to as a first main signal, a first sub signal, and a second sub signal, respectively, the method and apparatus include obtaining a first operational signal, which is used to determine on-track/off-track and/or a track cross direction, by performing a subtraction on the combination of the first and second sub signals, and the first main signal.
摘要翻译：一种用于使用与反射的主光束相对应的检测信号和分别对应于反射的第一和第二子光束的检测信号来检测信号以确定轨道上/离开轨道和/或轨道横向的方法和装置，并提供使用其的光学记录和/或再现装置。当分别对应于相应于主光束和第一和第二子光束的与光学信息存储介质的半径方向相对应的一个侧面的检测信号被称为第一主信号时，第一子信号信号和第二子信号，所述方法和装置包括获得用于确定轨道/离轨和/或轨道横向的第一操作信号，通过对第一和第二子信号，以及第一主信号。

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