公开(公告)号：US06714499B2

公开(公告)日：2004-03-30

申请号：US09769961

申请日：2001-01-26

申请人： Koji Katayama

发明人： Koji Katayama

IPC分类号： G11B390

CPC分类号： G11B7/1387 ,  G11B7/0937 ,  G11B7/122 ,  G11B11/10554 ,  G11B11/10576 ,  G11B11/1058

摘要： A flying optical recording/playback head for near-field optical recording/playback, which is capable of keeping the flying height of an optical lens to be constant and obtaining a stable playback signal, is provided. In the flying optical recording/playback head, a device for controlling the relative position between a slider and the optical lens based on a thermal expansion or a piezoelectric effect of an optical lens supporting member for holding the optical lens on the slider, or a thermal expansion of a portion of the optical lens.

摘要翻译： 提供了一种用于近场光学记录/重放的飞行光学记录/重放头，其能够将光学透镜的飞行高度保持恒定并获得稳定的重放信号。 在飞行光学记录/重放头中，基于用于将光学透镜保持在滑块上的光学透镜支撑构件的热膨胀或压电效应来控制滑块和光学透镜之间的相对位置的装置，或热 光学透镜的一部分的扩展。

公开(公告)号：US06700844B2

公开(公告)日：2004-03-02

申请号：US09758364

申请日：2001-01-12

申请人： Hyeung Chull Na

发明人： Hyeung Chull Na

IPC分类号： G11B390

CPC分类号： G11B7/0953 ,  G11B7/0941 ,  G11B7/0945

摘要： A method and apparatus for measuring the eccentricity of an optical disk. The method for measuring the eccentricity of an optical disk in accordance with the present invention comprises the steps of activating tracking servo while the optical disk is rotating, detecting the center value of tracking error signal and setting the center value as a reference value, and detecting the eccentricity of the optical disk by comparing the center value and the tracking error signal received right after the reference value is set. The method in accordance with the present invention precisely measures the eccentricity of an optical disk and adjusts focus and track servo gains and disk rotation speed based upon the measured disk eccentricity, which provides stable data reproduction performance.

摘要翻译： 一种用于测量光盘的偏心度的方法和装置。 根据本发明的用于测量光盘的偏心率的方法包括以下步骤：在光盘旋转时激活跟踪伺服，检测跟踪误差信号的中心值并将中心值设置为参考值，并且检测 通过比较设定参考值之后的中心值和跟踪误差信号，光盘的偏心度。 根据本发明的方法精确地测量光盘的偏心率，并且基于所测量的盘偏心率来调节聚焦并跟踪伺服增益和盘旋转速度，这提供了稳定的数据再现性能。

公开(公告)号：US06628589B2

公开(公告)日：2003-09-30

申请号：US09816073

申请日：2001-03-26

申请人： Masayuki Iwasaki ,  Masakazu Ogasawara

发明人： Masayuki Iwasaki ,  Masakazu Ogasawara

IPC分类号： G11B390

CPC分类号： G11B7/13925 ,  G11B7/1369 ,  G11B2007/0006

摘要： An apparatus and a method are provided for compensating an aberration occurring in a reflected light beam from a recording medium. The apparatus includes a liquid crystal unit including a first electrode layer having divisional electrodes and a second electrode layer, and a liquid crystal element which provides a light beam with a phase change when an electric field is applied; a detector for receiving the reflected light beam through the liquid crystal unit to generate a detection signal; a voltage generator for generating voltages to be applied to the divisional electrodes; and a controller for performing aberration compensation control by changing the applied voltages to each of the divisional electrodes with reference to an applied reference voltage to a predetermined divisional electrode. The controller determines the applied reference voltage based on an amplitude change of the detection signal when the applied voltages to the divisional electrodes are changed.

摘要翻译： 提供了一种用于补偿从记录介质反射的光束中发生的像差的装置和方法。 该装置包括：液晶单元，包括具有分隔电极的第一电极层和第二电极层;以及液晶元件，其在施加电场时提供具有相变的光束; 用于接收通过液晶单元的反射光束以产生检测信号的检测器; 用于产生施加到分电极的电压的电压发生器; 以及控制器，用于通过参考施加的参考电压将预定的分割电极的施加电压改变到每个分割电极来执行像差补偿控制。 当施加到分割电极的电压改变时，控制器基于检测信号的幅度变化来确定所施加的参考电压。

公开(公告)号：US06577572B2

公开(公告)日：2003-06-10

申请号：US09321081

申请日：1999-05-27

申请人： Rüdiger Brunheim ,  Michael Grimm ,  Steffen Lehr ,  Heinrich Schemmann

发明人： Rüdiger Brunheim ,  Michael Grimm ,  Steffen Lehr ,  Heinrich Schemmann

IPC分类号： G11B390

CPC分类号： G11B20/10009 ,  G11B7/0943

摘要： The invention relates to an apparatus for the reproduction or recording of data or information with a photodetector and digital error signal and evaluation signal processing. The object of the invention is to provide an apparatus for the reproduction or recording of data or information which requires little outlay despite digital evaluation signal processing and a considerable capability of adaptation to different scanning speeds. The invention is based on the principle of enabling digital evaluation signal generation with an analog-to-digital converter known from audio technology, even though the data rate of the data or high-frequency signal requires an analog-to-digital converter for the radio-frequency or for the video signal band. An analog-to-digital converter for the audio frequency band can be used to generate a digital evaluation signal by the analog-to-digital converter having fed to it not the high-frequency signal directly but rather at least one envelope of the high-frequency signal. An envelope detector is also proposed, which envelope detector is advantageously suitable both for the purpose of providing an upper envelope and for the purpose of providing a lower envelope. The invention can preferably be used in apparatuses for the reproduction or recording of data or information with a photodetector and digital error signal and evaluation signal processing by means of which data or information are read from the data tracks of a recording medium or of different recording media or are recorded in tracks.

摘要翻译： 本发明涉及一种用于利用光电检测器和数字误差信号和评估信号处理再现或记录数据或信息的装置。本发明的目的是提供一种用于再现或记录数据或信息的装置，其需要很少的费用 尽管数字评估信号处理和相当的适应不同扫描速度的能力。 本发明基于使用从音频技术已知的模数转换器来产生数字评估信号的原理，即使数据或高频信号的数据速率需要用于无线电的模拟 - 数字转换器 频率或视频信号频带。 用于音频频带的模拟 - 数字转换器可以用于通过模拟数字转换器产生数字评估信号，该模数转换器不是直接馈送高频信号，而是高频信号的至少一个包络线， 频率信号。 还提出了一种包络检测器，该包络检测器有利地适用于提供上部信封和用于提供下部信封的目的。本发明可以优选地用于再现或记录数据或信息的装置中 光电检测器和数字误差信号和评估信号处理，通过该处理，从记录介质或不同记录介质的数据轨道读取数据或信息，或记录在轨道中。

公开(公告)号：US06560181B1

公开(公告)日：2003-05-06

申请号：US09705769

申请日：2000-11-06

申请人： Hideki Takahashi

发明人： Hideki Takahashi

IPC分类号： G11B390

CPC分类号： G11B20/1883 ,  G11B20/1217 ,  G11B20/1258 ,  G11B20/18 ,  G11B20/1813 ,  G11B2020/10888 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1278 ,  G11B2020/1285 ,  G11B2020/183 ,  G11B2020/1893 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/2537 ,  G11B2220/2562 ,  G11B2220/2575

摘要： An information recording medium of this invention has a plurality of sector fields that record data, and each sector field has an identification information area (recording type area). The identification information area records one of first identification information indicating that data recorded in the sector field has high integrity, and second identification information indicating that data has low integrity.

摘要翻译： 本发明的信息记录介质具有记录数据的多个扇区，并且每个扇区具有识别信息区（记录类型区）。 识别信息区记录指示记录在扇区中的数据具有高完整性的第一识别信息之一，以及指示数据具有低完整性的第二识别信息。

公开(公告)号：US06522611B2

公开(公告)日：2003-02-18

申请号：US10022358

申请日：2001-12-20

申请人： Eiji Nakajima

发明人： Eiji Nakajima

IPC分类号： G11B390

CPC分类号： G11B19/12 ,  G11B19/04

摘要： A laser beam reflected on a storage surface of a DVD is detected with a light-receiving device to allow a matrix circuit to generate a push-pull signal. The push-pull signal is converted into a binary signal, and a base-n counter, having an upper-limit count which is set to a certain value, counts the resulting signal. A count circuit 8e having a prescribed count time period counts a carry signal which is delivered by the base-n counter. Then, a detection factor is determined from the ratio of the count of the carry signal to the count time period. When the detection factor is below a prescribed value, the upper-limit count of the base-n counter or the count time period is adjusted to control the detection sensitivity. A judgment portion compares a plurality of detection factors with a prescribed threshold to find a determination rate or the ratio of the number of detection factors to be compared with to the number of detection factors which exceed the prescribed threshold. When the determination rate exceeds the prescribed determination threshold, the process determines that wobbles are formed on the information read and/or write media. The determination threshold is adjusted when the determination rate does not exceed the determination threshold.

公开(公告)号：US06400667B1

公开(公告)日：2002-06-04

申请号：US09414090

申请日：1999-10-07

申请人： Yoshimasa Utsumi ,  Yasuaki Maeda ,  Hideki Nagashima ,  Tsutomu Harada

发明人： Yoshimasa Utsumi ,  Yasuaki Maeda ,  Hideki Nagashima ,  Tsutomu Harada

IPC分类号： G11B390

CPC分类号： G11B27/105 ,  G11B20/00086 ,  G11B20/10527 ,  G11B20/12 ,  G11B27/034 ,  G11B27/036 ,  G11B27/3027 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/2529

摘要： A reproduction apparatus and method a recording apparatus and method by which two different kinds of data can be reproduced and recorded efficiently are disclosed. When main data are intermittently read in from a recording medium, periods within which reading in of the main data is not performed appear inevitably, and the periods are made use of to read in sub data from the recording medium, thereby allowing synchronized reproduction of the main data and the sub data which relate to the main data. On the other hand, when main data are intermittently written onto a recording medium, periods within which writing of the main data is not performed appear inevitably, and the periods are made use of to write sub data onto the recording medium, thereby allowing parallel recording of the main data and the sub data.

摘要翻译： 公开了一种能够高效地再现和记录两种不同种类的数据的记录装置和方法的再现装置和方法。 当从记录介质间歇地读入主数据时，不可避免地出现主数据读入的周期，并且利用从记录介质读取子数据的周期，从而允许同步再现 主数据和与主数据相关的子数据。 另一方面，当将主数据间歇地写入记录介质时，不可避免地出现主数据写入的周期，并且使用这些周期将子数据写入到记录介质上，从而允许并行记录 的主数据和子数据。

公开(公告)号：US06377530B1

公开(公告)日：2002-04-23

申请号：US09249182

申请日：1999-02-12

申请人： Michael Burrows

发明人： Michael Burrows

IPC分类号： G11B390

CPC分类号： G11B31/02 ,  G11B31/003

摘要： A portable audio player stores a large amount of compressed audio data on an internal disk drive, and loads a portion of this into an internal random access memory (RAM) which requires less power and less time to access. The audio player plays the data stored in RAM and monitors the amount of unplayed data. When the amount of unplayed data falls below a threshold, additional data is copied from the disk drive into RAM. When the portable audio player is turned off, a predetermined amount of audio data is stored in a fast-access non-volatile flash memory unit. When the audio player is turned back on, and play is resumed, a suitable portion of this data can be played while data is being loaded from the disk drive into RAM, thus reducing the amount of time a user must wait before receiving data in response to a play request.

摘要翻译： 便携式音频播放器将大量的压缩音频数据存储在内部磁盘驱动器上，并将其一部分加载到需要更少功率和更少访问时间的内部随机存取存储器（RAM）中。 音频播放器播放存储在RAM中的数据，并监视未播放数据的数量。 当未播放数据量低于阈值时，附加数据将从磁盘驱动器复制到RAM中。 当便携式音频播放器关闭时，预定量的音频数据被存储在快速访问非易失性闪存单元中。 当音频播放器被重新打开并且播放被恢复时，可以在将数据从磁盘驱动器加载到RAM中的同时播放该数据的适当部分，从而减少用户在接收数据之前必须等待的时间量 播放请求。

公开(公告)号：US06337838B1

公开(公告)日：2002-01-08

申请号：US09421856

申请日：1999-10-20

申请人： Hiroshi Hikima ,  Junji Tanaka

发明人： Hiroshi Hikima ,  Junji Tanaka

IPC分类号： G11B390

CPC分类号： G11B7/005

摘要： A prepit detection unit for detecting prepits in an optical recording and reproducing apparatus for recording and reproducing information on a recordable, optical record medium including preinformation such as address information in a prepit form. In the prepit detection unit, for first and second divisional RF signals output from a pickup being divided into a first divisional light reception part and a second divisional light reception part by a division line optically parallel to the tangential direction of an information track for receiving reflected light from the optical record medium, mark sections and space sections are clamped by potential correction circuits and a difference is found by a radial push-pull circuit.

摘要翻译： 一种用于在光学记录和再现装置中检测预凹坑的预凹坑检测单元，用于在可记录的光学记录介质上记录和再现信息，包括诸如预制图形的地址信息之类的预信息。 在预处理检测单元中，对于从拾取器输出的第一和第二分频RF信号，通过与用于接收反射的信息轨迹的切线方向光学平行的划分线分成第一分光接收部分和第二分光接收部分 来自光学记录介质的光，标记部分和空间部分被电位校正电路钳位，并且通过径向推挽电路发现差异。

公开(公告)号：US06282161B1

公开(公告)日：2001-08-28

申请号：US09369127

申请日：1999-08-05

申请人： Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

发明人： Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

IPC分类号： G11B390

CPC分类号： G11B7/0956

摘要： An optical recording and reproducing apparatus for adjusting a tilt of an optical pickup in accordance with an amount of jitter of a reproduction signal, a tilt adjusting method therefor, and a recording control method. The optical recording and reproducing apparatus includes an optical pickup having an object lens, a tilt adjusting unit for adjusting a tilt angle of the object lens, a jitter detecting unit for detecting an amount of jitter of a reproducing signal generated by the optical pickup from a disk, and a tilt controlling unit for minimizing the amount of jitter by feeding the amount of jitter detected by the jitter detecting unit back to the tilt adjusting unit. According to the optical recording and reproducing apparatus, there is no need for a space in which a displacement sensor detecting the tilt angle of the optical pickup faces the disk.

摘要翻译： 一种用于根据再现信号的抖动量，其倾斜调整方法和记录控制方法来调整光学拾取器的倾斜的光学记录和再现装置。 光学记录和再现装置包括具有物镜的光学拾取器，用于调节物镜的倾斜角度的倾斜调节单元，用于检测由光学拾取器产生的再现信号的抖动量的抖动检测单元， 盘和倾斜控制单元，用于通过将由抖动检测单元检测到的抖动量馈送回倾斜调节单元来最小化抖动量。 根据光学记录和再现装置，不需要用于检测光学拾取器的倾斜角度的位移传感器面对盘的空间。