公开(公告)号：US20030095488A1

公开(公告)日：2003-05-22

申请号：US10256244

申请日：2002-09-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong-jin Ahn ,  In-sik Park ,  Kyung-geun Lee ,  Chang-jin Yang ,  Tatsuhiro Otsuka ,  Du-seop Yoon ,  Seong-sue Kim

IPC: G11B007/0045

CPC classification number: G11B7/126 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/00456 ,  G11B7/0062 ,  G11B2007/0006

Abstract: A method of and apparatus for recording data on an optical recording medium form a mark or a space by using a recording waveform having an erase pattern containing a multi-pulse. The method and the apparatus prevent distortion of the mark or the space and improve a mark shape such that a recording/reproducing characteristic of the optical recording medium is improved.

公开(公告)号：US20040184372A1

公开(公告)日：2004-09-23

申请号：US10805360

申请日：2004-03-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jung-Wan Ko ,  In-Sik Park ,  Kyung-Geun Lee ,  Du-Seop Yoon ,  Seong-Sin Joo ,  Jae-Seong Shim ,  Byoung-Ho Choi ,  Byung-In Ma ,  Yong-Jin Ahn ,  Tatsuhiro Otsuka

IPC: G11B007/00

CPC classification number: G11B27/24 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/26 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1278 ,  G11B2020/1279 ,  G11B2020/1287 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575

Abstract: A physical identification data (PID) addressing method using a wobble signal, a wobble address encoding circuit, a method and circuit for detecting the wobble address and a recording medium therefor. Groove tracks are classified into odd groove tracks and even groove tracks. Address information indicating physical identification information is phase modulated using wobble signals having a predetermined phase difference between two adjacent groove tracks, and recorded in each groove track so that address information modulated using the wobble signals having the phase difference of 90null between adjacent two groove tracks can be a quadrature phase shift keying (QPSK) signal. Accordingly, a larger amount of data can be recorded on the recording medium, and since an interval in which a wobble signal disappears is not caused, recovery of a wobble clock signal can be advantageously performed.

公开(公告)号：US20040160874A1

公开(公告)日：2004-08-19

申请号：US10684837

申请日：2003-10-15

Applicant: SAMSUNG Electronics Co., Ltd.

Inventor： Wook-Yeon Hwang ,  Yong-Jin Ahn ,  Tatsuhiro Otsuka ,  In-sik Park

IPC: G11B007/00

CPC classification number: G11B7/1267 ,  G11B7/0062 ,  G11B7/00736

Abstract: A method of optimizing recording conditions of an optical recording medium and an apparatus using the method. The method includes recording a test write pattern in a plurality of tracks of the optical recording medium; and checking a quality of a radio frequency signal reproduced from one of the plurality of tracks in which the predetermined write pattern is recorded and which is effected by writing in adjacent tracks to determine the optimized recording conditions.

Abstract translation: 一种优化光记录介质的记录条件的方法和使用该方法的装置。 该方法包括在光学记录介质的多个轨道中记录测试写入模式; 并且检查从其中记录了预定写入模式的多个磁道之一再现的射频信号的质量，并通过在相邻磁道中写入来实现，以确定优化的记录条件。

公开(公告)号：US20030218954A1

公开(公告)日：2003-11-27

申请号：US10372675

申请日：2003-02-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong-Jin Ahn ,  In-sik Park ,  Kyung-geun Lee ,  Chang-jin Yang ,  Tatsuhiro Otsuka ,  Seong-sue Kim ,  Jung-wan Ko ,  Du-seop Yoon

IPC: G11B007/0045

CPC classification number: G11B7/00456 ,  G11B7/00454 ,  G11B7/00557

Abstract: A method and apparatus to record data on an optical recording medium include generating a recording waveform having an erase pattern comprising a predetermined pulse having a high level which is higher than an erase power level and having a low level which is lower than the erase power level.

Abstract translation: 一种在光学记录介质上记录数据的方法和装置包括：生成具有擦除图案的记录波形，该擦除图案包括具有高于擦除功率电平并且具有低于擦除功率电平的低电平的高电平的预定脉冲 。

公开(公告)号：US20030063533A1

公开(公告)日：2003-04-03

申请号：US10233569

申请日：2002-09-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jong-Bae Kim ,  Young-Man Ahn ,  Tatsuhiro Otsuka

IPC: G11B007/00

CPC classification number: G11B7/13927 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1369

Abstract: An optical pickup apparatus includes a detection unit detecting a light beam reflected/diffracted by the recording medium and passing through the objective lens by dividing the light beam into a plurality of light areas, and a signal processor detecting a difference between widths T1 and T2 indicating that first and second focusing signals are greater than a predetermined threshold value and a thickness signal of the recording medium by using the detected difference when an S-curve of a focus error signal detected by using detection signals of the light areas output from the detection unit is obtained by subtracting a second detecting signal from a first detecting signal or by subtracting the first focusing signal from the second signal. Thus, a spherical aberration due to a change in thickness of the recording medium can be corrected by driving a spherical aberration correcting device according to a thickness signal corresponding to the change in thickness of the recording medium.

Abstract translation: 一种光学拾取装置，包括：检测单元，用于检测由记录介质反射/衍射的光束，并将光束分成多个光区域;以及信号处理器，检测宽度T1和T2之间的差异，指示 当通过使用从检测单元输出的光区域的检测信号检测到的聚焦误差信号的S曲线时，通过使用检测到的差异，第一和第二聚焦信号大于预定阈值和记录介质的厚度信号 通过从第一检测信号减去第二检测信号或从第二信号中减去第一聚焦信号获得。 因此，可以通过根据与记录介质的厚度变化相对应的厚度信号驱动球面像差校正装置来校正由于记录介质的厚度变化引起的球面像差。

公开(公告)号：US20010048696A1

公开(公告)日：2001-12-06

申请号：US09903529

申请日：2001-07-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tatsuhiro Otsuka

IPC: H01S003/13

CPC classification number: G11B7/126

Abstract: A temperature compensation apparatus for controlling an output power of a laser diode according to a temperature variation of the laser diode, and a method therefor. An error voltage between a voltage corresponding to the output power of the laser diode and a reference voltage is generated. The error voltage is output as a control voltage corrected based on the output power and is applied to the laser diode. When the level of the error voltage overflows or underflows in a first up/down counter, the control voltage based on the luminous efficiency of the laser diode is output by applying the corrected control voltage to the laser diode while interlocking the first up/down counter with a second up/down counter. Accordingly, it is possible to stabilize the luminous efficiency and reduce control error of the laser diode.

公开(公告)号：US20040264360A1

公开(公告)日：2004-12-30

申请号：US10845513

申请日：2004-05-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-geun Lee ,  Tatsuhiro Otsuka ,  Wook-yeon Hwang

IPC: G11B007/24 ,  G11B005/55

CPC classification number: G11B7/00736 ,  G11B7/24038

Abstract: An information storage medium includes BCA marks, having unique information, formed near the outer edge of the information storage medium. The BCA marks may be formed at the outermost edge of the information storage medium. This new layout enables miniaturization of the information storage medium so that the information storage medium is applicable to portable information recording and reproduction apparatuses.

Abstract translation: 信息存储介质包括在信息存储介质的外边缘附近形成的具有唯一信息的BCA标记。 BCA标记可以形成在信息存储介质的最外边缘处。 这种新的布置使得信息存储介质的小型化，使得信息存储介质可应用于便携式信息记录和再现设备。

公开(公告)号：US20040240362A1

公开(公告)日：2004-12-02

申请号：US10806318

申请日：2004-03-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong-jin Ahn ,  In-sik Park ,  Kyung-geun Lee ,  Chang-jin Yang ,  Tatsuhiro Otsuka ,  Du-seop Yoon ,  Seong-sue Kim

IPC: G11B005/09

CPC classification number: G11B7/126 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/00456 ,  G11B7/0062 ,  G11B2007/0006

Abstract: A method of and apparatus for recording data on an optical recording medium form a mark or a space by using a recording waveform having an erase pattern containing a multi-pulse. The method and the apparatus prevent distortion of the mark or the space and improve a mark shape such that a recording/reproducing characteristic of the optical recording medium is improved.

公开(公告)号：US20040218489A1

公开(公告)日：2004-11-04

申请号：US10861404

申请日：2004-06-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tatsuhiro Otsuka ,  Seong-sin Joo ,  Chong-sam Chung ,  Young-man Ahn ,  In-sik Park ,  Hea-jung Suh ,  Byung-in Ma ,  Byoung-ho Choi

IPC: G11B007/00

CPC classification number: G11B20/10009 ,  G11B7/005

Abstract: A method of and a circuit for providing a playback signal, which is compensated for time delay, from a photodetector having a plurality of outputs. A time difference between a first signal corresponding to a part of the outputs of the photodetector and a second signal corresponding to another part of the outputs of the photodetector is detected and one of the first and second signals is temporally shifted to compensate for a time delay between different outputs of the photodetector. The temporally shifted signal is summed with the other signal to provide a playback signal. Accordingly, the time delay between the outputs of the photodetector is compensated, thereby increasing the degree of modulation of the data playback signal. In addition, distortion or degradation of the signal is suppressed and occurrence of errors in the playback signal is minimized, thereby improving the reliability of the playback signal.

Abstract translation: 一种用于从具有多个输出的光电检测器提供补偿时间延迟的重放信号的方法和电路。 检测对应于光电检测器的输出的一部分的第一信号与对应于光电检测器的输出的另一部分的第二信号之间的时间差，并且第一和第二信号中的一个被时间偏移以补偿时间延迟 在光电检测器的不同输出之间。 时间偏移的信号与另一个信号相加以提供重放信号。 因此，补偿了光检测器的输出之间的时间延迟，从而增加了数据重放信号的调制度。 此外，抑制了信号的失真或劣化，并且重放信号中的错误的发生被最小化，从而提高了重放信号的可靠性。