公开(公告)号：US07095681B2

公开(公告)日：2006-08-22

申请号：US10890274

申请日：2004-07-14

申请人： Jung-Bae Park ,  Won Bae Joo ,  Sang Woon Suh

发明人： Jung-Bae Park ,  Won Bae Joo ,  Sang Woon Suh

IPC分类号： G11B7/00 ,  G11B5/09

CPC分类号： G11B7/0053 ,  G11B7/24082 ,  G11B20/10009 ,  G11B20/1403

摘要： An apparatus and method for detecting a wobble signal read from an optical disc. The wobble signal detection apparatus comprises an analog/digital (A/D) converter for A/D-converting an analog wobble signal, read from the optical disc and then band pass filtered, a slope detector for detecting a slope of the A/D-converted wobble signal according to a variation thereof, and a wobble signal detector for detecting a peak point of the A/D-converted wobble signal using the detected wobble signal slope, and detecting/outputting a square-wave wobble signal with a high level or low level transition at the detected peak point. The slope detector calculates variations of data values of the A/D-converted wobble signal sampled within a predetermined period on the basis of predetermined different weights, accumulates the calculated values and detects the slope of the A/D-converted wobble signal on the basis of the accumulated value. The predetermined period is an interval where at least two wobble signal data samples are obtained. Therefore, a stable wobble signal can be detected even though a low-frequency fluctuation component and DC offset component are introduced into the analog wobble signal read from the optical disc or the analog wobble signal varies in amplitude.

公开(公告)号：US07352674B2

公开(公告)日：2008-04-01

申请号：US10295948

申请日：2002-11-18

申请人： Jung Bae Park ,  Won Bae Joo ,  Sang Woon Suh

发明人： Jung Bae Park ,  Won Bae Joo ,  Sang Woon Suh

IPC分类号： G11B7/00

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/24082 ,  G11B7/26 ,  G11B20/10 ,  G11B20/1403 ,  G11B27/19 ,  G11B27/3027 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B2220/2575

摘要： Herein disclosed are an apparatus and method for encoding a wobble signal to be recorded on an optical disc, and an apparatus and method for decoding a wobble signal read from the optical disc. The encoding apparatus performs a minimum shift keying modulation operation for a wobble signal to be recorded as physical address information on a writable optical disc, by adjusting a first frequency f1 and second frequency f2 of the wobble signal with coherence. Therefore, a peak point of the wobble signal is formed at a point of time that the frequencies change. The decoding apparatus band pass filters an analog wobble signal read from the optical disc, converts the filtered wobble signal into a digital wobble signal, detects a peak point of the converted digital wobble signal, outputs a peak detection signal with a level transition at the detected peak point, and detects/outputs original wobble data on the basis of the outputted peak detection signal. Therefore, the decoding apparatus is able to accurately decode the wobble signal in a simple manner.

摘要翻译： 这里公开了一种用于编码要记录在光盘上的摆动信号的装置和方法，以及用于对从光盘读取的摆动信号进行解码的装置和方法。 编码装置通过调整第一频率f 1 1和第二频率f 2 2，对可记录的摆动信号作为物理地址信息对可写入光盘执行最小移位键控调制操作， / SUB>摆动信号。 因此，在频率变化的时刻形成摆动信号的峰值点。 解码装置带通滤波从光盘读取的模拟摆动信号，将经滤波的摆动信号转换为数字摆动信号，检测转换的数字摆动信号的峰值点，输出检测到的电平转换的峰值检测信号 并且基于输出的峰值检测信号检测/输出原始摆动数据。 因此，解码装置能够以简单的方式准确地解码摆动信号。

公开(公告)号：US06809997B2

公开(公告)日：2004-10-26

申请号：US10294818

申请日：2002-11-15

申请人： Jung Bae Park ,  Won Bae Joo ,  Sang Woon Suh

发明人： Jung Bae Park ,  Won Bae Joo ,  Sang Woon Suh

IPC分类号： G11B700

CPC分类号： G11B7/0053 ,  G11B7/24082 ,  G11B20/10009 ,  G11B20/1403

摘要： An apparatus and method for detecting a wobble signal read from an optical disc. The wobble signal detection apparatus comprises an analog/digital (A/D) converter for A/D-converting an analog wobble signal, read from the optical disc and then band pass filtered, a slope detector for detecting a slope of the A/D-converted wobble signal according to a variation thereof, and a wobble signal detector for detecting a peak point of the A/D-converted wobble signal using the detected wobble signal slope, and detecting/outputting a square-wave wobble signal with a high level or low level transition at the detected peak point. The slope detector calculates variations of data values of the A/D-converted wobble signal sampled within a predetermined period on the basis of predetermined different weights, accumulates the calculated values and detects the slope of the A/D-converted wobble signal on the basis of the accumulated value. The predetermined period is an interval where at least two wobble signal data samples are obtained. Therefore, a stable wobble signal can be detected even though a low-frequency fluctuation component and DC offset component are introduced into the analog wobble signal read from the optical disc or the analog wobble signal varies in amplitude.

摘要翻译： 一种用于检测从光盘读取的摆动信号的装置和方法。 摆动信号检测装置包括一个模拟/数字（A / D）转换器，用于A / D转换模拟摆动信号，从光盘读取，然后进行带通滤波;斜率检测器，用于检测A / D的斜率 转换摆动信号，以及摆动信号检测器，用于使用检测到的摆动信号斜率检测A / D转换的摆动信号的峰值点，并且检测/输出具有高电平的方波摆动信号 或在检测到的峰值点处的低电平转换。 斜率检测器基于预定的不同权重来计算在预定周期内采样的A / D转换的摆动信号的数据值的变化，累加所计算的值，并基于A / D转换的摆动信号的斜率检测 的累计值。 预定周期是获得至少两个摆动信号数据样本的间隔。 因此，即使在从光盘读取的模拟摆动信号中引入低频波动分量和DC偏移分量，也可以检测到稳定的摆动信号，或者模拟摆动信号的幅度变化。