公开(公告)号：US06621777B2

公开(公告)日：2003-09-16

申请号：US09836060

申请日：2001-04-16

申请人： Suk-jung Lee

发明人： Suk-jung Lee

IPC分类号： G11B509

CPC分类号： G11B20/10527 ,  G11B7/0037 ,  G11B19/125 ,  G11B20/1262 ,  G11B2020/00057 ,  G11B2020/10972

摘要： An optical disc player system for reproducing optical discs is provided. The system includes a digital signal processor for processing a data signal having a format read from an optical disc and reproducing the optical disc. The system includes a plurality of decoders for decoding data of different formats. The system includes a data output unit which selects the data output from the digital signal processor or the decoded data output from the decoders. The data output unit converts the selected data into an analog signal and outputs the converted signal to a corresponding channel. A controller enables one of the decoders depending on the data format of the optical disc and controls the selection operation of the data output unit, and a buffer memory for storing data output from the plurality of decoders depending to the data format or operation mode of the optical disc.

公开(公告)号：US06611485B2

公开(公告)日：2003-08-26

申请号：US09902311

申请日：2001-07-10

申请人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee

发明人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee

IPC分类号： G11B576

CPC分类号： G11B20/10009 ,  G11B7/005

摘要： In an apparatus and a method for correcting asymmetry in an optical disk reproduction system, an analog RF signal is received from an optical diode and an asymmetry-corrected signal is output as a digital EFM signal. The apparatus includes envelope detectors for detecting upper and lower envelopes of the RF signal, a level controller for controlling the level of the sum of the upper envelope and the lower envelope and for outputting signal having the controlled level, and a comparator for comparing the level of the signal output from the level controller with the level of the RF signal and for outputting the comparison result as the digital EFM signal.

公开(公告)号：US07616537B2

公开(公告)日：2009-11-10

申请号：US10677192

申请日：2003-10-02

申请人： Je-kook Kim ,  Suk-jung Lee ,  Young-wook Jang

发明人： Je-kook Kim ,  Suk-jung Lee ,  Young-wook Jang

IPC分类号： G11B7/095

CPC分类号： G11B7/08511

摘要： Provided are a focus search apparatus and method for performing a focus search after moving an optical pickup to a focus-on point according to a signal output from a sine wave generator so that a stable and smooth focus search is performed. In the focus search method, a sine wave is generated in response to a focus search command. The focus search is performed using an optical pickup in response to the sine wave. The optical pickup is driven in response to an amplitude of the sine wave during the focus search and in response to a filtered focus error signal during a focus servo.

摘要翻译： 提供了一种聚焦搜索装置和方法，用于根据从正弦波发生器输出的信号将光学拾取器移动到聚焦点之后进行聚焦搜索，从而进行稳定和平滑的焦点搜索。 在聚焦搜索方法中，响应于焦点搜索命令产生正弦波。 使用光学拾取器响应于正弦波执行焦点搜索。 在聚焦搜索期间响应于正弦波的幅度并且响应于聚焦伺服期间的滤波的聚焦误差信号来驱动光学拾取器。

公开(公告)号：US06680891B2

公开(公告)日：2004-01-20

申请号：US10429422

申请日：2003-05-05

申请人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee

发明人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee

IPC分类号： G11B390

CPC分类号： G11B20/10009 ,  G11B7/005

摘要： In an apparatus and a method for correcting asymmetry in an optical disk reproduction system, an analog RF signal is received from an optical diode and an asymmetry-corrected signal is output as a digital EFM signal. The apparatus includes envelope detectors for detecting upper and lower envelopes of the RF signal, a level controller for controlling the level of the sum of the upper envelope and the lower envelope and for outputting signal having the controlled level, and a comparator for comparing the level of the signal output from the level controller with the level of the RF signal and for outputting the comparison result as the digital EFM signal.

摘要翻译： 在用于校正光盘再现系统中的不对称性的装置和方法中，从光二极管接收模拟RF信号，并且输出不对称校正的信号作为数字EFM信号。 该装置包括用于检测RF信号的上下包络的包络检测器，用于控制上包络和下包络的和的电平并用于输出具有受控电平的信号的电平控制器，以及用于比较电平的比较器 从电平控制器输出的信号与RF信号的电平，并输出比较结果作为数字EFM信号。

公开(公告)号：US5535356A

公开(公告)日：1996-07-09

申请号：US942059

申请日：1992-09-09

申请人： Suk-ki Kim ,  Hyeong-keon An ,  Tae-sik Joo ,  Suk-jung Lee

发明人： Suk-ki Kim ,  Hyeong-keon An ,  Tae-sik Joo ,  Suk-jung Lee

IPC分类号： G10L19/00 ,  G06F3/06 ,  G11B20/00 ,  G11B20/18 ,  G11C7/00 ,  G11C27/00 ,  G06F12/00 ,  H01J3/00

CPC分类号： G06F3/0601 ,  G11B20/00007 ,  G11B20/1813 ,  G11C7/00 ,  G06F2003/0694

摘要： A digital data storage system which does not require the use of moving, mechanical components, and which utilizes semiconductor memory elements. In one embodiment, the digital data storage system includes a ROM, a system control microcomputer, a digital signal processor (DSP), and a D/A converter. In operation, the DSP is responsive to control signals generated by the system control microcomputer for reading out digital data, e.g., digital audio data, stored in the ROM, and decoding the read-out digital data. The D/A converter functions to convert the decoded read-out digital data into an analog output signal, e.g., an analog audio signal, and to supply the analog output signal to an output terminal. The digital data storage system of this embodiment is a playback-only system. In another embodiment, the digital data storage system includes all of the elements of the above-described embodiment, and further includes an A/D converter and an EEPROM, to facilitate the recording of digital data. In operation, during a record mode of operation, the A/D converter functions to convert an input analog signal, e.g., an analog audio signal, into an input digital data signal, and the DSP functions, in response to the control signals, to write the input digital data signal into the EEPROM. The digital data storage device of this embodiment functions as a record/playback system.

摘要翻译： 数字数据存储系统，其不需要使用移动的机械部件，并且其利用半导体存储器元件。 在一个实施例中，数字数据存储系统包括ROM，系统控制微计算机，数字信号处理器（DSP）和D / A转换器。 在操作中，DSP响应于由系统控制微机产生的控制信号，用于读出存储在ROM中的数字数据，例如数字音频数据，以及对读出的数字数据进行解码。 D / A转换器用于将解码的读出的数字数据转换成模拟输出信号，例如模拟音频信号，并将模拟输出信号提供给输出端。 该实施例的数字数据存储系统是只播放系统。 在另一个实施例中，数字数据存储系统包括上述实施例的所有元件，并且还包括A / D转换器和EEPROM，以便于记录数字数据。 在操作中，在记录操作模式下，A / D转换器用于将输入模拟信号（例如，模拟音频信号）转换为输入数字数据信号，并且DSP响应于控制信号而起作用 将输入的数字数据信号写入EEPROM。 本实施例的数字数据存储装置用作记录/重放系统。

公开(公告)号：US07289405B2

公开(公告)日：2007-10-30

申请号：US10706819

申请日：2003-11-12

申请人： Je-koonk Kim ,  Young-wook Jang ,  Suk-jung Lee

发明人： Je-koonk Kim ,  Young-wook Jang ,  Suk-jung Lee

IPC分类号： G11B7/0005

CPC分类号： G11B7/0945 ,  G11B19/12 ,  G11B2007/0006

摘要： Provided are an apparatus and method for detecting a type of an optical disc inserted into an optical disc system and/or adjusting a track balance in the optical disc system by detecting voltages of a focus error signal and a tracking error signal. For detecting a type of an optical disc inserted into an optical disc system, the apparatus comprising: an analog-to-digital converter that converts a focus error signal into n-bit voltage data; and a duty measurer that compares the n-bit voltage data with a positive noise voltage level and a negative noise voltage level, upcounts by a predetermined value if the n-bit voltage data is higher than the positive noise voltage level or lower than the negative voltage level, and outputs the upcounted result as a duty of the focus error signal.

摘要翻译： 提供了一种用于通过检测聚焦误差信号和跟踪误差信号的电压来检测插入到光盘系统中的光盘的类型和/或调整光盘系统中的轨道平衡的装置和方法。 为了检测插入到光盘系统中的光盘的类型，该装置包括：将聚焦误差信号转换成n位电压数据的模数转换器; 以及将n位电压数据与正噪声电压电平和负噪声电压电平进行比较的负载测量器，如果n位电压数据高于正噪声电压电平或低于负电平，则向上计数预定值 电压电平，并输出计数结果作为聚焦误差信号的占空比。

公开(公告)号：US06396787B1

公开(公告)日：2002-05-28

申请号：US09476567

申请日：2000-01-03

申请人： Suk-jung Lee ,  Soowoong Lee

发明人： Suk-jung Lee ,  Soowoong Lee

IPC分类号： G11B509

CPC分类号： G11B20/1426 ,  G11B2020/1461

摘要： An apparatus and method for generating an eight-to-fourteen modulation (EFM) signal in an optical disk reproducing system, capable of accurately generating the EFM signal regardless of the kinds of defects of a disk. The apparatus for generating an EFM signal from a radio frequency (RF) signal reproduced from an optical disk, includes a data slicing unit for selecting, in response to a selection signal, a first slice reference level generated by correcting the asymmetry of the RF signal, or a second slice reference signal generated using peak and bottom envelopes of the RF signal and the first slice reference level, to be a third slice reference level. The data slicing unit slices the RF signal based on the third slice reference level and outputs the slicing result as the EFM signal. A selection signal generating unit generates the selection signal in response to the number of occurrences of error correction flags or EFM flags. An EFM flag generating unit generates the EFM flags in accordance with bit pattern which is not used in demodulating the EFM signal. The error correction flags are generated in accordance with the amount of error which is present in the demodulated EFM signal.

摘要翻译： 一种用于在光盘再现系统中产生八到十四调制（EFM）信号的装置和方法，能够精确地产生EFM信号，而不管盘的缺陷的种类。 用于从光盘再现的射频（RF）信号产生EFM信号的装置包括：数据限制单元，用于响应于选择信号，选择通过校正RF信号的不对称度而产生的第一限幅基准电平 或者使用RF信号和第一切片参考电平的峰值和底部包络产生的第二切片参考信号成为第三切片参考水平。 数据分片单元基于第三切片参考电平对RF信号进行分片，并将切片结果作为EFM信号输出。 选择信号生成单元响应于纠错标志或EFM标志的出现次数生成选择信号。 EFM标志生成单元根据在解调EFM信号中未使用的位模式生成EFM标志。 根据存在于解调的EFM信号中的误差量来生成纠错标志。

公开(公告)号：US20050068872A1

公开(公告)日：2005-03-31

申请号：US10706819

申请日：2003-11-12

申请人： Je-kook Kim ,  Young-wook Jang ,  Suk-jung Lee

发明人： Je-kook Kim ,  Young-wook Jang ,  Suk-jung Lee

IPC分类号： G11B5/58 ,  G11B7/00 ,  G11B7/09 ,  G11B19/12

CPC分类号： G11B7/0945 ,  G11B19/12 ,  G11B2007/0006

摘要： Provided are an apparatus and method for detecting a type of an optical disc inserted into an optical disc system and/or adjusting a track balance in the optical disc system by detecting voltages of a focus error signal and a tracking error signal. For detecting a type of an optical disc inserted into an optical disc system, the apparatus comprising: an analog-to-digital converter that converts a focus error signal into n-bit voltage data; and a duty measurer that compares the n-bit voltage data with a positive noise voltage level and a negative noise voltage level, upcounts by a predetermined value if the n-bit voltage data is higher than the positive noise voltage level or lower than the negative voltage level, and outputs the upcounted result as a duty of the focus error signal.

摘要翻译： 提供了一种用于通过检测聚焦误差信号和跟踪误差信号的电压来检测插入到光盘系统中的光盘的类型和/或调整光盘系统中的轨道平衡的装置和方法。 为了检测插入到光盘系统中的光盘的类型，该装置包括：将聚焦误差信号转换成n位电压数据的模数转换器; 以及将n位电压数据与正噪声电压电平和负噪声电压电平进行比较的负载测量器，如果n位电压数据高于正噪声电压电平或低于负电平，则向上计数预定值 电压电平，并输出计数结果作为聚焦误差信号的占空比。

公开(公告)号：US06324135B1

公开(公告)日：2001-11-27

申请号：US09182358

申请日：1998-10-29

申请人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee

发明人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee

IPC分类号： G11B509

CPC分类号： G11B20/10009 ,  G11B7/005

摘要： In an apparatus and a method for correcting asymmetry in an optical disk reproduction system, an analog RF signal is received from an optical diode and an asymmetry-corrected signal is output as a digital EFM signal. The apparatus includes envelope detectors for detecting upper and lower envelopes of the RF signal, a level controller for controlling the level of the sum of the upper envelope and the lower envelope and for outputting signal having the controlled level, and a comparator for comparing the level of the signal output from the level controller with the level of the RF signal and for outputting the comparison result as the digital EFM signal.

摘要翻译： 在用于校正光盘再现系统中的不对称性的装置和方法中，从光二极管接收模拟RF信号，并且输出不对称校正的信号作为数字EFM信号。 该装置包括用于检测RF信号的上下包络的包络检测器，用于控制上包络和下包络的和的电平并用于输出具有受控电平的信号的电平控制器，以及用于比较电平的比较器 从电平控制器输出的信号与RF信号的电平，并输出比较结果作为数字EFM信号。

公开(公告)号：US06282157B1

公开(公告)日：2001-08-28

申请号：US09189192

申请日：1998-11-10

申请人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee ,  Jeong-Cheol Shin

发明人： Je-Kook Kim ,  Young-Wook Jang ,  Suk-Jung Lee ,  Jeong-Cheol Shin

IPC分类号： G11B700

CPC分类号： G11B7/0908 ,  G11B7/0901 ,  G11B7/0941 ,  G11B7/0948

摘要： A tracking servo control apparatus for muting a tracking error signal when a mirror signal is generated, in an optical disk system, such as a compact disk player or a digital video disk, compensates for tracking gain and phase according to the tracking error signal. The apparatus includes a mirror setting unit for receiving the generated mirror signal and for generating a mirror signal by defining the mirror signal to predetermined minimum and maximum time intervals, a switch for outputting a muted tracking error signal while the defined mirror signal is activated, and otherwise, outputting the tracking error signal, and a tracking gain/phase compensator for receiving the output signal from the switch and compensating for the tracking gain and phase. Thus, the system can be stabilized by muting a tracking servo loop according to a mirror signal whose pulse width is defined to a predetermined window section.

摘要翻译： 一种跟踪伺服控制装置，用于在诸如光盘播放器或数字视频盘之类的光盘系统中产生镜像信号时使跟踪误差信号静音，根据跟踪误差信号补偿跟踪增益和相位。 该装置包括：反射镜设置单元，用于接收生成的镜像信号，并通过将镜像信号定义为预定的最小和最大时间间隔来产生镜像信号;开关，用于在定义的镜像信号被激活时输出静音跟踪误差信号;以及 否则输出跟踪误差信号，以及用于从开关接收输出信号并补偿跟踪增益和相位的跟踪增益/相位补偿器。 因此，可以根据将脉冲宽度定义为预定窗口部分的镜像信号使跟踪伺服环路静音来使系统稳定。