公开(公告)号：US07236108B2

公开(公告)日：2007-06-26

申请号：US10976121

申请日：2004-10-28

Applicant: Yuh Cheng ,  Pi-Hai Liu

Inventor： Yuh Cheng ,  Pi-Hai Liu

IPC: H03M7/00

CPC classification number: G11B20/10009 ,  G11B20/1426

Abstract: An apparatus for data recovery includes a multi-level comparison unit, a detection logic unit, and a data composer. The multi-level comparison unit compares an input signal with M different reference signal levels to generate M digital data, the number M being greater than or equal to 2. The detection logic unit is coupled to the multi-level comparison unit, and performs logic operations upon specified lengths over the M digital data obtained from the multi-level comparison unit. The data composer is coupled to the multi-level comparison unit and the detection logic unit. The data composer generates recovered data conforming with a run length encoding constraint based on the M digital data obtained from the multi-level comparison unit and the result obtained from the detection logic unit.

Abstract translation: 用于数据恢复的装置包括多级比较单元，检测逻辑单元和数据编辑器。 多电平比较单元将输入信号与M个不同的参考信号电平进行比较以产生M个数字数据，数字M大于或等于2.检测逻辑单元耦合到多电平比较单元，并执行逻辑 在从多级比较单元获得的M数字数据上指定长度的操作。 数据编辑器耦合到多级比较单元和检测逻辑单元。 数据编辑器基于从多级别比较单元获得的M数字数据和从检测逻辑单元获得的结果，生成符合游程长度编码约束的恢复数据。

公开(公告)号：US20070058764A1

公开(公告)日：2007-03-15

申请号：US11223064

申请日：2005-09-09

Applicant: Yuh Cheng ,  Pi-Hai Liu ,  Meng-Ta Yang

Inventor： Yuh Cheng ,  Pi-Hai Liu ,  Meng-Ta Yang

IPC: H04L7/00 ,  H03D3/24

CPC classification number: H04L7/0334 ,  G11B20/10194 ,  G11B20/10481 ,  H03L7/091 ,  H04L7/0337

Abstract: A phase detection device comprising an analog-digital converter, an interpolator, and a determining unit. The analog-digital converter receives an analog signal and converts the analog signal to a digital signal according to a plurality of digital sampling points. The interpolator generates a plurality of interpolation points according to a predetermined amount of digital sampling points. The determining unit obtains a phase of the ZC point according to the interpolation points or the digital sampling points.

Abstract translation: 一种相位检测装置，包括模拟数字转换器，内插器和确定单元。 模拟数字转换器接收模拟信号，并根据多个数字采样点将模拟信号转换成数字信号。 内插器根据预定量的数字采样点产生多个内插点。 确定单元根据插值点或数字采样点获得ZC点的相位。

公开(公告)号：US07187629B2

公开(公告)日：2007-03-06

申请号：US10707606

申请日：2003-12-23

Applicant: Yuh Cheng

Inventor： Yuh Cheng

IPC: G11B7/095

CPC classification number: G11B7/0906 ,  G11B7/0943

Abstract: A method for deriving a tracking error signal based on a first analog detection signal and a second analog detection signal. The method includes summing the first analog detection signal and the second analog detection signal to generate an analog sum signal. An analog delay device is utilized to delay the analog sum signal to be a delay signal. The delay signal is digitalized into a digital delay signal. The first analog detection signal and the second analog detection signal are respectively transformed into a first digital detection signal and a second digital detect signal. The tracking error signal is then generated utilizing a comparing operation among the digital delay signal, the first digital detect signal, and the first digital detect signal.

公开(公告)号：US20060291345A1

公开(公告)日：2006-12-28

申请号：US11466109

申请日：2006-08-22

Applicant: Yuh Cheng

Inventor： Yuh Cheng

IPC: G11B7/00

CPC classification number: G11B7/0906 ,  G11B7/0943

Abstract: A method for deriving a tracking error signal based on a first analog detection signal and a second analog detection signal. The method includes summing the first analog detection signal and the second analog detection signal to generate an analog sum signal. An analog delay device is utilized to delay the analog sum signal to be a delay signal. The delay signal is digitalized into a digital delay signal. The first analog detection signal and the second analog detection signal are respectively transformed into a first digital detection signal and a second digital detect signal. The tracking error signal is then generated utilizing a comparing operation among the digital delay signal, the first digital detect signal, and the first digital detect signal.

Abstract translation: 一种用于基于第一模拟检测信号和第二模拟检测信号导出跟踪误差信号的方法。 该方法包括对第一模拟检测信号和第二模拟检测信号求和以产生模拟和信号。 使用模拟延迟装置将模拟和信号延迟为延迟信号。 延迟信号被数字化为数字延迟信号。 第一模拟检测信号和第二模拟检测信号分别变换为第一数字检测信号和第二数字检测信号。 然后利用数字延迟信号，第一数字检测信号和第一数字检测信号之间的比较操作产生跟踪误差信号。

公开(公告)号：US20060203631A1

公开(公告)日：2006-09-14

申请号：US11077668

申请日：2005-03-11

Applicant: Gwo-Huei Wu ,  Yuh Cheng ,  Chao-Ming Huang ,  Chih-Yuan Chen ,  Ching-Ning Chiu

Inventor： Gwo-Huei Wu ,  Yuh Cheng ,  Chao-Ming Huang ,  Chih-Yuan Chen ,  Ching-Ning Chiu

IPC: G11B7/00

CPC classification number: G11B7/0903 ,  G11B7/0053 ,  G11B7/00718

Abstract: A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal.

Abstract translation: 检测器跨越具有凹槽轨道和脊迹道的光学存储介质扫描，每个轨道具有摆动结构，以检测从光学存储介质反射的光。 基于检测器的输出产生摆动信号和跟踪误差信号，并且根据跟踪误差信号对摆动信号进行采样。 基于跟踪误差信号和摆动信号的采样值的比较来确定检测器是否位于凹槽轨道或脊迹道。