公开(公告)号：US06483799B1

公开(公告)日：2002-11-19

申请号：US09490024

申请日：2000-01-21

申请人： Zu-Wen Chao ,  Guo-Zua Wu ,  Der-Ray Huang ,  Wei-Cheng Chen

发明人： Zu-Wen Chao ,  Guo-Zua Wu ,  Der-Ray Huang ,  Wei-Cheng Chen

IPC分类号： G11B2300

CPC分类号： G11B31/006

摘要： A rewritable DVD-RAM disc. By changing the location or dimension of the lead-out area of the DVD-RAM disc, the data area of the disc can be enlarged. The enlarged area of the disc can be flexibly applied to the user area, the main spare area, or the backup spare area.

摘要翻译： 可重写DVD-RAM光盘。 通过改变DVD-RAM光盘的导出区域的位置或尺寸，可以扩大光盘的数据区域。 盘的放大区域可以灵活地应用于用户区域，主备用区域或备用备用区域。

公开(公告)号：US06415400B1

公开(公告)日：2002-07-02

申请号：US09434863

申请日：1999-11-04

申请人： Guo-Zua Wu ,  Zu-Wen Chao ,  Wei-Cheng Chen

发明人： Guo-Zua Wu ,  Zu-Wen Chao ,  Wei-Cheng Chen

IPC分类号： G11C2900

CPC分类号： G11B20/1883 ,  G11B20/18 ,  G11B2220/20

摘要： A method is proposed for managing defect areas on an erasable optical disc in a dynamic manner. By this method, a main spare area including a plurality of logical blocks is used to provide substitution logic blocks for any bad logical blocks in the user read/write area; and when all the logical blocks in the main spare area are used up, a supplementary spare area is defined from a continuous unused storage area in the user read/write area; and further, when all the logical blocks in this supplementary spare area are used up, an additional supplementary spare area is defined from another continuous unused storage area in the user read/write area; and so forth. The method allows the use of a comprehensive set of commands and data message for the communication between the file system and the optical drive when performing this management method. This method allows the optical drive to move over a shorter distance from a bad logical block to the substitution logic block so that access time to the optical disc can be enhanced. Moreover, this method allows all the bad logical blocks to have substitutions as long as the unused storage space in the formatted area is sufficient, so that this method can offer a much longer time of service than the prior art.

摘要翻译： 提出了以动态方式管理可擦除光盘上的缺陷区域的方法。 通过该方法，使用包括多个逻辑块的主备用区域来为用户读/写区域中的任何不良逻辑块提供替换逻辑块; 并且当主备用区中的所有逻辑块用完时，从用户读/写区中的连续未使用的存储区定义辅助备用区; 此外，当该辅助备用区域中的所有逻辑块用完时，从用户读/写区域中的另一连续未使用的存储区域定义附加补充备用区域; 等等。 该方法允许在执行该管理方法时使用一组全面的命令和数据消息来进行文件系统与光驱之间的通信。 该方法允许光驱从不良逻辑块到替代逻辑块的较短距离移动，从而可以提高对光盘的访问时间。 此外，只要格式化区域中的未使用的存储空间足够，该方法允许所有不良逻辑块具有替换，使得该方法可以提供比现有技术更长的服务时间。

公开(公告)号：US5715102A

公开(公告)日：1998-02-03

申请号：US778350

申请日：1997-01-03

申请人： Zu-Wen Chao ,  Tsung-Ming Yang ,  Jau-Jiu Ju ,  Shin-Ter Tsai

发明人： Zu-Wen Chao ,  Tsung-Ming Yang ,  Jau-Jiu Ju ,  Shin-Ter Tsai

IPC分类号： G02B27/09 ,  G11B7/135 ,  G02B5/04

CPC分类号： G02B27/0972 ,  G02B27/09 ,  G02B27/0911 ,  G02B27/0977 ,  G11B7/1359 ,  G11B7/1362 ,  G11B7/1398

摘要： A beam shaper device for an optical read/write head on an optical disc drive is provided. This beam shaper device is particularly useful for shaping a laser beam originally emitted with an elliptical cross section, into having a substantially circular cross section. The beam shaper device includes only one prism and one plane mirror. The shape of the prism and the orientation of the plane mirror are specifically devised in such a way as to allow the output beam shaper device to have a circular cross section and to have its propagation axis orthogonal to that of the input laser beam.

摘要翻译： 提供了一种用于在光盘驱动器上的光读/写头的光束整形器装置。 该光束整形器装置特别适用于将原来以椭圆形横截面发射的激光束成形为具有基本上圆形的横截面。 光束整形器装置仅包括一个棱镜和一个平面镜。 棱镜的形状和平面镜的取向特别设计成使得输出光束整形器具有圆形横截面并使其传播轴与输入激光束的轴正交。

公开(公告)号：US07376342B2

公开(公告)日：2008-05-20

申请号：US10838251

申请日：2004-05-05

申请人： Guo-Zua Wu ,  Chien-Hsin Huang ,  Jian-Ru Li ,  Zu-Wen Chao ,  Der-Ray Huang

发明人： Guo-Zua Wu ,  Chien-Hsin Huang ,  Jian-Ru Li ,  Zu-Wen Chao ,  Der-Ray Huang

IPC分类号： H04N5/00

CPC分类号： G11B19/125 ,  G11B27/034 ,  G11B27/329 ,  G11B27/36 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2545

摘要： This specification disclosed a method of determining the disc type for a disc burner to determine the type of an unfinalized disc. By checking the special bit data in the first and second tracks, the discs can be classified into different types. This avoids the trouble of manually keeping track of the type of each disc.

摘要翻译： 本说明书公开了一种确定盘式燃烧器的盘类型以确定未通气盘的类型的方法。 通过检查第一和第二轨道中的特殊位数据，盘可以分为不同类型。 这避免了手动跟踪每个光盘类型的麻烦。

公开(公告)号：US20060140071A1

公开(公告)日：2006-06-29

申请号：US11188904

申请日：2005-07-26

申请人： Yu-Tasang Hwang ,  Zu-Wen Chao

发明人： Yu-Tasang Hwang ,  Zu-Wen Chao

IPC分类号： G11B7/00

CPC分类号： G11B7/1374

摘要： The present invention relates to an objective lens optical part for an optical pickup device and a focusing method using the same. The focusing method at least includes the steps of providing a first optical member and a second optical member corresponding to the first optical member, dividing a light source into a first optical beam and a second optical beam via the first optical member and the second optical member, and applying a random dithering mechanism to the second optical beam, such that respective pickup optical spot and tracking optical spot can be achieved, wherein the pickup spot picks up more data and the tracking optical spot facilitates tracking operation, thus improving tracking and accuracy of the picked up data.

摘要翻译： 本发明涉及一种用于光学拾取装置的物镜光学部件和使用该物镜的聚焦方法。 聚焦方法至少包括以下步骤：提供对应于第一光学构件的第一光学构件和第二光学构件，通过第一光学构件和第二光学构件将光源分成第一光束和第二光束 并且对第二光束施加随机抖动机制，使得可以实现各个拾取光点和跟踪光点，其中拾取点拾取更多数据，并且跟踪光点有助于跟踪操作，从而提高跟踪和精度 拾取数据。

公开(公告)号：US06343059B1

公开(公告)日：2002-01-29

申请号：US09376669

申请日：1999-08-16

申请人： Yuan-Chin Lee ,  Zu-Wen Chao

发明人： Yuan-Chin Lee ,  Zu-Wen Chao

IPC分类号： G11B712

CPC分类号： G11B7/1359

摘要： This invention concerns a reading-writing pickup head for data access on optical record media. The pickup head of the present invention includes a birefringent prism and a quarter-wave plate where the birefringent prism is made of double-refraction material with different refraction indices on different polarizations, and it is used to split the incident and reflection beams of the pickup head. According to the present invention, the prism and the polarized beam splitter of a pickup head of the related art are replaced with the birefringent prism. Consequently, the number of optical elements of the pickup head according to the present invention is reduced.

摘要翻译： 本发明涉及用于在光学记录介质上进行数据访问的读写头拾取头。 本发明的拾取头包括双折射棱镜和四分之一波长板，其中双折射棱镜由不同折射率的不同折射率的双折射材料制成，并且用于将拾取器的入射和反射光束分离 头。 根据本发明，现有技术的拾取头的棱镜和偏振分束器被双折射棱镜代替。 因此，根据本发明的拾取头的光学元件的数量减少。

公开(公告)号：US5278811A

公开(公告)日：1994-01-11

申请号：US909778

申请日：1992-07-07

申请人： Zu-Wen Chao

发明人： Zu-Wen Chao

IPC分类号： G11B11/105 ,  G11B11/00

CPC分类号： G11B11/10543

摘要： A magneto-optic reading apparatus includes a laser light source for generating a linearly polarized light beam and a quarter-wave plate which converts the linearly polarized light beam into a circularly polarized light beam. A beam splitter separates the circularly polarized light beam into a first beam which passes therethrough and a second beam which is reflected. An objective lens converges the first beam so as to scan one of the data tracks of a magneto-optic recording element. The information written along the scanned data track causes the polarization of the first beam to be modulated as the first beam is reflected by the recording element toward the first beam splitter. The first beam splitter further separates the first beam into a third beam which passes therethrough and a fourth beam which is reflected. The quarter-wave plate converts the third beam into a linearly polarized light beam which has a polarization that is substantially transverse to the polarization of the light beam from the laser light source. A polarizing beam splitter prevents the third beam from reaching the laser light source. An optical signal detecting system receives the fourth beam from the first beam splitter and generates a magnetization signal corresponding to the information along the scanned data track.

摘要翻译： 磁光读取装置包括用于产生线偏振光束的激光光源和将线偏振光束转换为圆偏振光束的四分之一波片。 分束器将圆偏振光束分离成通过其中的第一光束和被反射的第二光束。 物镜会聚第一光束以扫描磁光记录元件的数据轨道之一。 沿着扫描的数据轨道写入的信息导致当第一光束被记录元件朝向第一分束器反射时，第一光束的偏振被调制。 第一分束器进一步将第一光束分离成通过其中的第三光束和被反射的第四光束。 四分之一波片将第三光束转换为线偏振光束，其具有基本上横向于来自激光光源的光束的偏振的偏振。 偏振分束器防止第三光束到达激光光源。 光信号检测系统接收来自第一分束器的第四光束，并产生对应于扫描数据轨迹的信息的磁化信号。

公开(公告)号：US07190654B2

公开(公告)日：2007-03-13

申请号：US10838255

申请日：2004-05-05

申请人： Guo-Zua Wu ,  Chien-Hsin Huang ,  Zu-Wen Chao ,  Chwan-Chan Chen

发明人： Guo-Zua Wu ,  Chien-Hsin Huang ,  Zu-Wen Chao ,  Chwan-Chan Chen

IPC分类号： G11B7/00

CPC分类号： G11B7/00456

摘要： A disc burner and its control method applicable to high speed disc burner, to solve disc burning failure problem due to burning speed exceeding encoding speed. A buffer is inserted to store the encoded data in groups, and these data groups are used in sequence for disc burning purpose. Therefore, the waiting time of the writing laser is spread out and does not exceed the threshold waiting time, and there is no disc burning failure problem.

摘要翻译： 光盘刻录机及其控制方法适用于高速光盘刻录机，解决由于烧录速度超过编码速度而造成的光盘刻录故障问题。 插入缓冲器以将编码的数据分组存储，并且这些数据组按顺序用于光盘刻录目的。 因此，写入激光器的等待时间分散，不超过阈值等待时间，没有光盘刻录失败问题。

公开(公告)号：US20050094500A1

公开(公告)日：2005-05-05

申请号：US10806123

申请日：2004-03-23

申请人： Guo-Zua Wu ,  Zu-Wen Chao ,  Yi-Jung Wang ,  Nai-Heng Tseng ,  Shu-Ching Chen

发明人： Guo-Zua Wu ,  Zu-Wen Chao ,  Yi-Jung Wang ,  Nai-Heng Tseng ,  Shu-Ching Chen

IPC分类号： G11B5/09 ,  G11B7/00 ,  G11B7/005 ,  G11B20/00

CPC分类号： G11B20/0021 ,  G11B7/005 ,  G11B20/00086 ,  G11B20/00224 ,  G11B20/00246 ,  G11B20/00326 ,  G11B20/00362 ,  G11B20/00528 ,  G11B20/00536 ,  G11B20/00695 ,  G11B20/00746

摘要： The specification disclosed a method that controls the access times of an optical disc and discs of the same. The method includes the following steps. First, an optical disc drive obtains the addresses of a life flag and a medium key block (MKB) by reading a private flag of an optical disc. The life flag and the MKB are used to control the access times of the optical disc. After confirming the addresses of the life flag and the MKB, the optical disc drive obtains an optical power signal to determine the power that should be used to read the MKB. When the optical disc drive uses the appropriate reading power to access the MKB, the recognizable number of access times in the MKB data is reduced, and the medium key signal is extracted to be confirmed if it is recognizable to restore the main data.

摘要翻译： 本说明书公开了一种控制光盘的访问时间和其光盘的方法。 该方法包括以下步骤。 首先，光盘驱动器通过读取光盘的专用标志来获得生命标记和中密钥块（MKB）的地址。 寿命标志和MKB用于控制光盘的访问时间。 在确认生命标志和MKB的地址之后，光盘驱动器获得光功率信号，以确定应该用于读取MKB的功率。 当光盘驱动器使用适当的读取功率来访问MKB时，MKB数据中的可识别的访问次数减少，并且如果可识别恢复主数据，则提取媒体密钥信号以被确认。

公开(公告)号：US5745465A

公开(公告)日：1998-04-28

申请号：US786330

申请日：1997-01-23

申请人： Shin-Ter Tsai ,  Zu-Wen Chao

发明人： Shin-Ter Tsai ,  Zu-Wen Chao

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G11B7/1378 ,  G11B7/1369 ,  G11B7/13922 ,  G11B2007/0006

摘要： A digital video disc optical pick-up head system has a laser light source, a beam splitter, a collimating len, a polarization changer, a deflecting mirror, an optical crystal assembly, an objective len and a photosensor assembly. These optical components together constitute an optical pick-up head system that generates only a single focus at any one time. When an alternative focus is required, polarized light of an alternative polarization is used for generating a detectable opto-electrical signal for the photosensor.

摘要翻译： 数字视盘光学拾取头系统具有激光光源，分束器，准直灯，偏光改变器，偏转镜，光学晶体组件，物镜和光电传感器组件。 这些光学部件一起构成在任何一个时刻仅产生单个焦点的光学拾取头系统。 当需要替代焦点时，使用替代极化的偏振光来产生用于光电传感器的可检测的光电信号。