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1. 发明专利

DE69020773D1 未知
公开(公告)号：DE69020773D1
公开(公告)日：1995-08-17
申请号：DE69020773
申请日：1990-04-03
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MORIYA MITSURO , SHIBANO MASAYUKI , YAMAGUCHI HIROYUKI , YAMADA SHINICHI , WATANABE KATSUYA
IPC分类号： G11B7/085 , G11B21/08
摘要： In an apparatus for searching desired track by transferring and controlling the reproduction position of the pickup for reproducing the signal recorded on a recording carrier (1) on the basis of reference transfer information, the traveling load is measured, and the value of the reference transfer information is corrected according to this measured value, so that the desired track may be searched stably. The transfer motor (13) is driven so that the reproduction position may move at a constant velocity, and the traveling load is measured (36). The transfer motor is driven so that the moving speed of the reproduction position or the time for moving a specified distance may be predetermined specific value, and by this driving signal, the value corresponding to the traveling load is determined.

2. 发明专利

DE69020773T2 未知
公开(公告)号：DE69020773T2
公开(公告)日：1996-03-14
申请号：DE69020773
申请日：1990-04-03
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MORIYA MITSURO , SHIBANO MASAYUKI , YAMAGUCHI HIROYUKI , YAMADA SHINICHI , WATANABE KATSUYA
IPC分类号： G11B7/085 , G11B21/08
摘要： In an apparatus for searching desired track by transferring and controlling the reproduction position of the pickup for reproducing the signal recorded on a recording carrier (1) on the basis of reference transfer information, the traveling load is measured, and the value of the reference transfer information is corrected according to this measured value, so that the desired track may be searched stably. The transfer motor (13) is driven so that the reproduction position may move at a constant velocity, and the traveling load is measured (36). The transfer motor is driven so that the moving speed of the reproduction position or the time for moving a specified distance may be predetermined specific value, and by this driving signal, the value corresponding to the traveling load is determined.

3. 发明专利

DE68913619T2 未知
公开(公告)号：DE68913619T2
公开(公告)日：1994-06-16
申请号：DE68913619
申请日：1989-08-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： WATANABE KATSUYA , MORIYA MITSURO , YAMADA SHINICHI , SHIBANO MASAYUKI
IPC分类号： G11B7/09 , G11B7/085
摘要： In an apparatus which focuses a light beam (6) on a rotating recording medium (10) in order to record and/or reproduce information, the light beam on the recording medium is controlled of its focus so that a prescribed focusing condition is accomplished. By storing a relation between a target position of focus control and the amplitude of a reproduced signal and by obtaining an optimum target position of focus control in accordance with such stored information, the target position of the focus control can be precisely and quickly adjusted, thereby properly controlling the light beam to focus on the recording medium.

4. 发明专利

DE68913619D1 未知
公开(公告)号：DE68913619D1
公开(公告)日：1994-04-14
申请号：DE68913619
申请日：1989-08-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： WATANABE KATSUYA , MORIYA MITSURO , YAMADA SHINICHI , SHIBANO MASAYUKI
IPC分类号： G11B7/09 , G11B7/085
摘要： In an apparatus which focuses a light beam (6) on a rotating recording medium (10) in order to record and/or reproduce information, the light beam on the recording medium is controlled of its focus so that a prescribed focusing condition is accomplished. By storing a relation between a target position of focus control and the amplitude of a reproduced signal and by obtaining an optimum target position of focus control in accordance with such stored information, the target position of the focus control can be precisely and quickly adjusted, thereby properly controlling the light beam to focus on the recording medium.

5. 发明专利

JP2006155859A Optical disk device 有权
标题翻译：光盘设备
公开(公告)号：JP2006155859A
公开(公告)日：2006-06-15
申请号：JP2005305915
申请日：2005-10-20
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： WATANABE KATSUYA , YOSHIKAWA AKIRA , YAMADA SHINICHI , MINAMINO JUNICHI
IPC分类号： G11B7/004 , G11B7/085 , G11B7/09
CPC分类号： G11B7/0948 , G11B7/0941 , G11B2007/0013
摘要： PROBLEM TO BE SOLVED: To provide an optical disk device capable of preventing the flaw and contamination of a disk surface and obtaining a high-quality RF signal.
SOLUTION: This device is capable of reading data from an optical disk 102 having a plurality of information recording layers including a first information recording layer having a relatively small distance from a disk surface, and a second information recording layer having a relatively large distance from the disk surface. The device is provided with a focus control unit 117 for positioning the converging point of optical beams on the optional information recording layer of an optical disk 102, a tracking control unit 118 for positioning the converging point of the optical beams on the predetermined track on the information recording layer, and a gain switching unit 108 capable of changing gain characteristics of at least one of the focus control unit 117 and the tracking control unit 118. The gain switching unit 108 sets a gain cross-over frequency for reading data from the first information recording layer at a value lower than that for reading data from the second information recording layer.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够防止盘表面的缺陷和污染并获得高质量RF信号的光盘装置。解决方案：该装置能够从具有多个信息记录层的光盘102读取数据，该多个信息记录层包括距离盘表面相对较小距离的第一信息记录层，以及具有相对大的第二信息记录层距磁盘表面的距离。该装置设置有用于将光束的会聚点定位在光盘102的可选信息记录层上的聚焦控制单元117，用于将光束的会聚点定位在光盘102上的预定轨道上的跟踪控制单元118 信息记录层，以及能够改变焦点控制单元117和跟踪控制单元118中的至少一个的增益特性的增益切换单元108.增益切换单元108设置用于从第一个数据读取数据读取数据的增益交叉频率信息记录层，其值低于从第二信息记录层读取数据的值。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005158228A Optical disk system and spherical aberration correction control unit 有权
标题翻译：光盘系统和球形校正校正控制单元
公开(公告)号：JP2005158228A
公开(公告)日：2005-06-16
申请号：JP2004247694
申请日：2004-08-27
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KUZE YUICHI , WATANABE KATSUYA , KONDO KENJI , YAMADA SHINICHI
IPC分类号： G11B7/095 , G11B7/125 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To overcome deterioration of recording and reproduction performance of an optical disk due to spherical aberration, which appears due to tilt of an objective lens for canceling coma aberration appearing in an optical beam spot with a warp of the disk. SOLUTION: The optical disk system has a lens tilt section which tilts an objective lens such that the coma aberration appearing in an optical beam spot focused on a data surface is corrected; a spherical aberration correction section for correcting the spherical aberration appearing in the optical beam spot focused on the data surface; and a control section of correction of lens tilt spherical-aberration for controlling the spherical aberration correction section such that a correction level of the spherical aberration corrected by the spherical aberration correction section depending on tilt of the objective lens tilted by the lens tilt section. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了克服由于球面像差导致的光盘的记录和再现性能的劣化，这是由于用于消除出现在光束斑点中的彗形像差的物镜的倾斜，其具有盘的翘曲。解决方案：光盘系统具有倾斜物镜的透镜倾斜部分，使得聚焦在数据表面上的光束光斑中出现的彗形像差被校正; 球面像差校正部，用于校正聚焦在数据表面上的光束斑中出现的球面像差; 以及用于控制球面像差校正部分的透镜倾斜球面像差的校正控制部分，使得根据由透镜倾斜部分倾斜的物镜的倾斜度由球面像差校正部分校正的球面像差的校正水平。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004348935A Device and method for generating tracking error signal, optical disk drive, and tracking controlling method 审中-公开
公开(公告)号：JP2004348935A
公开(公告)日：2004-12-09
申请号：JP2004035820
申请日：2004-02-12
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： YAMADA SHINICHI , KUZE YUICHI , WATANABE KATSUYA , KONDO KENJI , YOSHIKAWA AKIRA
IPC分类号： G11B7/09
摘要： PROBLEM TO BE SOLVED: To generate a tracking error signal on the basis of displacement amount from a reference value of a main beam push-pull signal.
SOLUTION: A tracking error signal generating device 20 is provided with a main beam push-pull signal generating means 300 for generating a main beam push-pull signal, a side beam push-pull signal generating means 301 for generating a side beam push-pull signal, a displacement amount detecting means 40 for detecting the displacement magnitude from the reference value of the main beam push-pull signal on the basis of the main beam push-pull signal and the side beam push-pull signal, and a tracking error signal generating means 50 for generating a tracking error signal by correcting either the main beam push-pull signal or the side beam push-pull signal on the basis of the displacement amount detected by the displacement amount detecting means 40.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2004164830A Optical disk controller and optical disk device 有权
标题翻译：光盘控制器和光盘设备
公开(公告)号：JP2004164830A
公开(公告)日：2004-06-10
申请号：JP2003359469
申请日：2003-10-20
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： YAMAMOTO TAKEHARU , FUJIUNE KENJI , YAMADA SHINICHI , WATANABE KATSUYA
IPC分类号： G11B19/28 , G11B7/095
摘要： PROBLEM TO BE SOLVED: To provide an optical disk controller which realizes recording and reproducing at high multiple-speed, and which has less power consumption.
SOLUTION: This optical disk controller 150 is a controller for servocontrolling an optical disk device 101 provided with a disk motor 402 for rotating an optical disk, and an optical head 403 to emit the light beam for recording data on the optical disk and/or reproducing data from the optical disk. This controller is further provided with an adjustable clock output section 123 to output a plurality of clock signals with different frequencies, and a control section 112 to calculate and output signals which shows a controlled variable, by receiving signals from the optical head which shows the amount of deflection from a predetermined target value, and by calculating based on the signals which shows the amount of deflection, in order to servocontrol the light beam of the optical disk device. Based on recording multiple-speed and/or reproducing multiple-speed when the recording and/or reproducing operation of the optical disk device is performed, the adjustable clock output section 123 modifies the frequencies of the clock signals, and the control section 112 calculates synchronizing with the clock signals of the adjustable clock output section.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种以高速多速实现记录和再现并且具有较少功耗的光盘控制器。解决方案：该光盘控制器150是用于伺服控制设置有用于旋转光盘的光盘电机402的光盘装置101的控制器，以及用于发射用于在光盘上记录数据的光束的光学头403， /或从光盘再现数据。该控制器还设置有可调时钟输出部分123以输出具有不同频率的多个时钟信号，以及控制部分112，通过从光学头接收信号来计算和输出显示受控变量的信号，该信号显示量并且通过基于表示偏转量的信号进行计算，以便伺服控制光盘装置的光束。当执行光盘装置的记录和/或再现操作时，基于记录多速和/或再现多个速度，可调节时钟输出部分123修改时钟信号的频率，并且控制部分112计算同步与可调时钟输出部分的时钟信号。版权所有（C）2004，JPO

9. 发明专利

JP2004145965A Optical recording/reproducing device 审中-公开
公开(公告)号：JP2004145965A
公开(公告)日：2004-05-20
申请号：JP2002309329
申请日：2002-10-24
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： SHIOTANI MASAMI , MASAKI KIYOSHI , YAMADA SHINICHI
IPC分类号： G11B7/09 , G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/095
CPC分类号： G11B7/0941 , G11B7/0045 , G11B7/0901 , G11B7/0956
摘要： PROBLEM TO BE SOLVED: To solve the problem of unstable tracking control caused by a reduced AGC output because of the shifting of irradiation power from a proper value on an optical disk depending on recording conditions. SOLUTION: In parallel with the supplying of a signal from a bisected photodetector 19 through a differential amplifier 11 and an address signal processing circuit 30, the signal of a signal detection photodetector 8 is passed through a signal processing circuit 15 to be received by a drive control circuit 15, and output to a driving control circuit 14. The signal of the differential amplifier 11 is output through an ACG circuit 12 and a gain variable amplifier 13 to the driving control circuit 14. By inputting the output of the driving control circuit 14 to a driving circuit 20 for driving an optical beam 4, a light quantity proper for an optical disk 1 is controlled, and tracking control is stabilized. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2003281761A Optical disk apparatus 有权
标题翻译：光盘设备
公开(公告)号：JP2003281761A
公开(公告)日：2003-10-03
申请号：JP2002364029
申请日：2002-12-16
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KONDO KENJI , KUZE YUICHI , FUJIUNE KENJI , YAMADA SHINICHI , WATANABE KATSUYA , ABE MASAYOSHI
IPC分类号： G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide an optical disk apparatus which accurately records and reproduces data by appropriate tilt control. SOLUTION: The optical disk apparatus comprises: a rotating means 101 for rotating an information recording medium; a light source 109 for irradiating the data surface of the information recording medium with a light beam; a converging means for converging the light beam; a focus error detecting means 115 for detecting a deviation between the data surface and the focus of the light beam converged by the converging means; a focus direction transferring means 104 for transferring the converging means in a direction perpendicular to the data surface; a focus controlling means for driving the focus direction transferring means on the basis of the output of the focus error detecting means so that the light beam converges on the data surface in a predetermined state; a tracking direction transferring means for transferring the light source in the radial direction of the information recording medium; and a tilt calculation means for calculating the average value of the output of the focus control means obtained for a period of time being an integral multiple of a period that the information recording medium makes one rotation at two different points in the radial direction, respectively and calculating the tilt of the data surface on the basis of the average values at the two different points. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种通过适当的倾斜控制精确地记录和再现数据的光盘装置。光盘装置包括：用于旋转信息记录介质的旋转装置101; 用于用光束照射信息记录介质的数据表面的光源109; 用于会聚光束的会聚装置; 聚焦误差检测装置115，用于检测由会聚装置收敛的光束的数据表面和焦点之间的偏差; 聚焦方向传送装置104，用于在垂直于数据表面的方向上传送会聚装置; 焦点控制装置，用于根据聚焦误差检测装置的输出驱动聚焦方向传送装置，使得光束在预定状态下会聚在数据表面上; 跟踪方向传送装置，用于在信息记录介质的径向上传送光源; 以及倾斜计算装置，用于计算在一段时间内获得的聚焦控制装置的输出的平均值，该周期是信息记录介质在径向方向上的两个不同点进行一次旋转的周期的整数倍; 基于两个不同点的平均值来计算数据表面的倾斜度。版权所有（C）2004，JPO

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