公开(公告)号：US5438386A

公开(公告)日：1995-08-01

申请号：US175642

申请日：1993-12-30

申请人： Zu-Wen Chao

发明人： Zu-Wen Chao

IPC分类号： G02B7/28 ,  G03B13/36 ,  G03B13/02

CPC分类号： G02B7/28

摘要： A coaxial master-slave lens system is provided. The coaxial master-slave lens system can be either fixed-focus type or zoom type, and can be equipped to any camera equipment. In such a coaxial master-slave lens system, a slave lens is provided as an additional attachment to the master lens. The slave lens is provided with a center hollowed portion for accommodating the master lens in such a manner that the slave optical axis is in coincidence with the master optical axis; the slave front lens plane is in coincidence with the master front lens plane; the slave rear lens plane is in coincidence with the master rear lens plane; the slave front focus point is in coincidence with the master front focus point; and the slave rear focus point is in coincidence with the master rear focus point.

摘要翻译： 提供同轴主从透镜系统。 同轴主从镜头系统可以是固定焦距型或变焦型，可以配备任何相机设备。 在这种同轴主从透镜系统中，作为与主透镜的附加附件提供从镜头。 从镜头设置有中心空心部分，用于容纳主镜片，使得从光轴与主光轴重合; 从前镜头平面与主镜头平面重合; 从属后透镜平面与主后透镜平面重合; 从动前焦点与主前焦点重合; 从机后焦点与主后焦点重合。

公开(公告)号：US07383585B2

公开(公告)日：2008-06-03

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： H04L9/00

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： A method controls the access times of an optical disc end 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 4KB data is reduced, and the medium key signal is extracted to be confirmed if it is recognizable to restate the main data.

摘要翻译： 一种方法控制其光盘端盘的访问时间。 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，4KB数据中的可识别的访问次数减少，并且如果可识别的主键信息被重新标识，则提取中等密钥信号以被确认。

公开(公告)号：US07197163B2

公开(公告)日：2007-03-27

申请号：US10700549

申请日：2003-11-05

申请人： Guo-Zua Wu ,  Yi-Jung Wang ,  Zu-Wen Chao ,  Chwan-Chang Chen

发明人： Guo-Zua Wu ,  Yi-Jung Wang ,  Zu-Wen Chao ,  Chwan-Chang Chen

IPC分类号： G06K9/00

CPC分类号： G06T1/005 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061

摘要： A watermark embedding method based on DCT subband image characters is disclosed. An original image is converted into a frequency image using a discrete cosine transformation. The watermark information is then embedded into a specific embedding block in each macro-block of the frequency image. The method has the following advantages: (1) the image embedded by watermark is resistant from distortion and damages from compressions; (2) the watermark image can be extracted without employing the original image; and (3) the quality of the image embedded with the watermark image can remain intact.

摘要翻译： 公开了一种基于DCT子带图像字符的水印嵌入方法。 使用离散余弦变换将原始图像转换成频率图像。 然后将水印信息嵌入到频率图像的每个宏块中的特定嵌入块中。 该方法具有以下优点：（1）水印嵌入图像不受扭曲破坏和压缩损坏; （2）可以在不使用原始图像的情况下提取水印图像; 和（3）嵌入水印图像的图像的质量可以保持不变。

公开(公告)号：US20050018872A1

公开(公告)日：2005-01-27

申请号：US10700549

申请日：2003-11-05

申请人： Guo-Zua Wu ,  Yi-Jung Wang ,  Zu-Wen Chao ,  Chwan-Chang Chen

发明人： Guo-Zua Wu ,  Yi-Jung Wang ,  Zu-Wen Chao ,  Chwan-Chang Chen

IPC分类号： G06K9/00 ,  G06T1/00

CPC分类号： G06T1/005 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061

摘要： A watermark embedding method based on DCT subband image characters is disclosed. An original image is converted into a frequency image using a discrete cosine transformation. The watermark information is then embedded into a specific embedding block in each macro-block of the frequency image. The method has the following advantages: (1) the image embedded by watermark is resistant from distortion and damages from compressions; (2) the watermark image can be extracted without employing the original image; and (3) the quality of the image embedded with the watermark image can remain intact.

摘要翻译： 公开了一种基于DCT子带图像字符的水印嵌入方法。 使用离散余弦变换将原始图像转换成频率图像。 然后将水印信息嵌入到频率图像的每个宏块中的特定嵌入块中。 该方法具有以下优点：（1）水印嵌入图像不受扭曲破坏和压缩损坏; （2）可以在不使用原始图像的情况下提取水印图像; 和（3）嵌入水印图像的图像的质量可以保持不变。

公开(公告)号：US06370104B1

公开(公告)日：2002-04-09

申请号：US09376668

申请日：1999-08-16

申请人： Zu-Wen Chao ,  Yuan-Chin Lee

发明人： Zu-Wen Chao ,  Yuan-Chin Lee

IPC分类号： G11B712

CPC分类号： G11B7/127 ,  G02B27/283 ,  G11B7/004 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1374 ,  G11B2007/0006

摘要： This invention relates to a DVD reading-writing pickup head employing multiple wavelengths for data access on an optical record medium. With the configuration of the pickup head of the present invention, the number of the used optical elements is minimized. The pickup head of the present invention includes a cemented birefringent prism, a plurality of objective lenses, quarter-wavelength plates and laser sources and a photo detector. The cemented birefringent prism is used to refract the laser beams generated by the laser sources into an incident branch and split the laser beams and a reflected branch reflected from the optical record medium.

摘要翻译： 本发明涉及一种在光学记录介质上采用多个波长进行数据存取的DVD读写头拾取头。 利用本发明的拾取头的结构，所使用的光学元件的数量被最小化。 本发明的拾取头包括胶合双折射棱镜，多个物镜，四分之一波长板和激光源以及光电检测器。 胶结双折射棱镜用于将由激光源产生的激光束折射成入射分支，并将激光束和从光学记录介质反射的反射分支分开。

公开(公告)号：US20050141883A1

公开(公告)日：2005-06-30

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： G11B19/12 ,  G11B27/034 ,  G11B27/32 ,  G11B27/36 ,  H04N5/781

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：US20050141386A1

公开(公告)日：2005-06-30

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： G11B5/09 ,  G11B7/0045

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：US5748602A

公开(公告)日：1998-05-05

申请号：US763437

申请日：1996-12-11

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

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

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G11B7/1369 ,  G11B2007/0006

摘要： A single-lens optical pick-up head has a laser diode, a beam splitter, a collimator, a polarizing light converter, a polarization controller, a polarizing beam splitter, a first quarter-wavelength plate, a mirror, a second quarter-wavelength plate, a convex mirror, an objective lens and a photodetector, for use in accessing DVD and CD discs by switching its optical property between two states.

摘要翻译： 单透镜光学拾取头具有激光二极管，分束器，准直仪，偏振光转换器，偏振控制器，偏振光束分离器，第一四分之一波长板，反射镜，第二四分之一波长 板，凸面镜，物镜和光电检测器，用于通过在两种状态之间切换其光学性质来访问DVD和CD光盘。

公开(公告)号：US5748574A

公开(公告)日：1998-05-05

申请号：US843471

申请日：1997-04-16

申请人： Zu-Wen Chao

发明人： Zu-Wen Chao

IPC分类号： G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G11B11/10543

摘要： A double focal-point magneto-optic pick-up head is provided. This magneto-optic pick-up head reads data from an optical disc by using a diffraction grating to diffract a laser beam into two diffracted beams of equal intensity which are focused on the optical disc at two focal points. One focal point is pinpointed on one groove portion of the optical disc, and the other focal point is pinpointed on one neighboring land portion of the same. This allows the two reflected beams to have a difference in propagation length equal to twice the depth of the land portion. The reflected beams are subsequently diffracted again by the diffraction grating into four beams, two of which are directed to interfere with each other to thereby produce an interference beam representative of a read signal from the optical disc. Since the depth is fixed by manufacture, the difference in propagation length between the two reflected beams from the two focal points on the optical disc can always be maintained at a constant. The interference between the two beams for the read signal is thus precise, allowing the output data from the magneto-optic pick-up head to be reliable.

摘要翻译： 提供双焦点磁光拾取头。 该磁光拾取头通过使用衍射光栅从光盘读取数据，以将激光束衍射成两个相等强度的衍射光束，其聚焦在两个焦点上的光盘上。 一个焦点被精确地定位在光盘的一个凹槽部分上，另一个焦点被精确地定位在该光盘的一个相邻的陆部上。 这允许两个反射光束的传播长度差等于接地部分的深度的两倍。 反射光束随后被衍射光栅再次衍射成四个光束，其中两个光束相互干涉，从而产生表示来自光盘的读取信号的干涉光束。 由于深度通过制造固定，所以来自光盘上的两个焦点的两个反射光束之间的传播长度差可以始终保持恒定。 因此，用于读取信号的两个光束之间的干涉是精确的，允许来自磁光拾取头的输出数据是可靠的。

公开(公告)号：US5712843A

公开(公告)日：1998-01-27

申请号：US774361

申请日：1996-12-27

申请人： Zu-Wen Chao ,  Jau-Jiu Ju

发明人： Zu-Wen Chao ,  Jau-Jiu Ju

IPC分类号： G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1365 ,  G11B11/10543

摘要： A miniature optical head for optical disk drive units is disclosed. The head assembly comprises a polarization light-splitter means having a block-shaped body. A laser light source generates a laser light beam at a predetermined wavelength and illuminating into the block body of the polarization light-splitter means. A first quarter-wavelength light plate means arranged at a side surface of the block-shaped body of the polarizing light-splitter means is placed opposite the laser light source. A reflective diffraction grating arranged further external to the first quarter-wavelength light plate means is used for reflectively diffracting the laser light beam. A second quarter-wavelength light plate means is arranged to a surface of the block-shaped polarizing light-splitter means in a plane perpendicular to the first quarter-wavelength light plate means. A holographic optical element is arranged on a side surface of the block-shaped body opposite the second quarter-wavelength light plate means. A light sensor array is arranged further next to the holographic optical element along the path of the light beams returned by the surface of the optical disk being accessed, the returning light beams being received by the array for detecting data conveyed therein. The physical dimensioning of the optical head is suitable for head assembly miniaturization, the light energy involved in the data access operation is used without substantial loss and the light source is free from feedback noise.

摘要翻译： 公开了一种用于光盘驱动单元的微型光学头。 头组件包括具有块状体的偏振光分离器装置。 激光源产生预定波长的激光束并照射到偏振光分离装置的块体中。 布置在偏振光分离装置的块状体的侧面的第一四分之一波长的光板装置设置在与激光光源相对的位置。 在第一四分之一波长的光板装置的外侧布置的反射衍射光栅被用于反射衍射激光束。 第二四分之一波长的光板装置在垂直于第一四分之一波长的光板装置的平面中布置在块状偏振光分离装置的表面上。 全息光学元件布置在与第二四分之一波长的光板装置相对的块状体的侧表面上。 光传感器阵列沿着被所访问的光盘的表面返回的光束的路径进一步布置在全息光学元件的旁边，返回的光束被阵列接收，用于检测在其中传送的数据。 光头的物理尺寸适用于头部组件的小型化，使用数据存取操作所涉及的光能没有实质的损耗而光源没有反馈噪声。