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1. 发明专利

JP2014081978A Inspection device and inspection method 审中-公开
标题翻译：检查装置和检查方法
公开(公告)号：JP2014081978A
公开(公告)日：2014-05-08
申请号：JP2012229816
申请日：2012-10-17
申请人： Pioneer Electronic Corp , パイオニア株式会社
发明人： YANAGAWA NAOHARU
IPC分类号： G11B20/18 , G11B7/24097
摘要： PROBLEM TO BE SOLVED: To inspect a recording medium and a record reproducing device.SOLUTION: An inspection device (200) inspects a recording medium (100) recording first information (110) which is recorded so that a first error amount belonging to a range of a first error is detected when reproduced with a predetermined reproducing condition, and a record reproducing device (300). The inspection device includes: first detection means (210) for detecting a second error amount detected when the first information is reproduced by the record reproducing device with a first reproducing condition; second detection means (210) for detecting a third error amount detected when the first information is reproduced by the record reproducing device with a second reproducing condition; and discrimination means (220) which discriminates respective deterioration of the recording medium and the record reproducing device on the basis of the second error amount and the third error amount.
摘要翻译：要解决的问题：检查记录介质和记录再现装置。解决方案：检查装置（200）检查记录第一信息（110）的记录介质（100），其被记录为使得属于范围的第一错误量当以预定的再现条件再现时检测到第一错误，以及记录再现装置（300）。检查装置包括：第一检测装置（210），用于检测由第一再现条件由记录再现装置再现第一信息时检测到的第二误差量; 第二检测装置（210），用于检测由第二再现条件由记录再现装置再现第一信息时检测到的第三错误量; 以及基于第二误差量和第三误差量鉴别记录介质和记录再现装置的各种劣化的鉴别装置（220）。

2. 发明专利

JP2008021341A Optical pickup and information apparatus 审中-公开
标题翻译：光学拾取和信息设备
公开(公告)号：JP2008021341A
公开(公告)日：2008-01-31
申请号：JP2006189701
申请日：2006-07-10
申请人： Pioneer Electronic Corp , パイオニア株式会社
发明人： YANAGAWA NAOHARU , IZAWA MASATAKA
IPC分类号： G11B7/135 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To enhance accuracy in reproducing or recording an information signal while reducing an effect of stray light, e.g. in an information recording medium such as a multi-layer optical disk. SOLUTION: The optical pickup (100) is equipped with (i) a light source (101) for irradiating a laser beam, (ii) an optical system (105, etc.) for guiding laser beam to one recording layer among a plurality of recording layers, (iii) an optical functional element (104) for changing a phase of a wave surface in the laser beam for each minute area included in an area irradiated by the laser beam for every position of the minute area, (iv) and a photodetecting means (PD0, etc.) for at least receiving the laser beam. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提高再现或记录信息信号的精度，同时减少杂散光的影响，例如，在诸如多层光盘的信息记录介质中。光拾取器（100）配备有（i）用于照射激光束的光源（101），（ii）用于将激光束引导到一个记录层的光学系统（105等）多个记录层，（iii）用于在每个微小区域的每个位置处改变由激光束照射的区域中的每个微小区域的激光束中的波面的相位改变的光学功能元件（104） iv）和用于至少接收激光束的光电检测装置（PD0等）。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2004227653A Tracking servo control device, tracking servo control method, and program for controlling tracking servo 有权
公开(公告)号：JP2004227653A
公开(公告)日：2004-08-12
申请号：JP2003013615
申请日：2003-01-22
申请人： Pioneer Electronic Corp , パイオニア株式会社
发明人： YANAGAWA NAOHARU , YONE TATSUHIRO , KATO MASAHIRO , SHIROTA AKIRA , HORIKAWA KUNIHIKO , MURAMATSU EIJI
IPC分类号： G11B7/007 , G11B7/09
CPC分类号： G11B7/0945 , G11B7/00736 , G11B7/00745 , G11B7/0901 , G11B7/094 , G11B7/24085
摘要： PROBLEM TO BE SOLVED: To reduce the error rate caused by the influence of a pre-pit out of the data obtained from a read signal at the time of reproducing information. SOLUTION: This device is a tracking servo control device for irradiating a groove track on a recording medium on which a groove track and a pre-pit are formed previously, with a light beam. An off-set value in tracking servo control control is made minimum by using a first reproducing signal based on reflected light from the recording medium in the case of that at least one part of pre-pit is formed within an irradiation range of the light beam and a second reproducing signal based on the reflected light in the case of that the pre-pit is formed at other than the irradiation range. COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2000113497A OPTICAL PICKUP DEVICE 失效
公开(公告)号：JP2000113497A
公开(公告)日：2000-04-21
申请号：JP28381498
申请日：1998-10-06
申请人： PIONEER ELECTRONIC CORP
发明人： YANAGAWA NAOHARU
IPC分类号： G11B7/09 , G11B7/095 , G11B7/125 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To remove the noise component occurring in double refraction from a focus error signal by setting the optical axis of an objective lens at an inclination position with respect to the optical axis of an irradiation optical system in order to minimize the unnecessary astigmatism applied to the optical elements of an irradiation optical system and a detecting optical system. SOLUTION: The angle position of an objective lens unit 50 is set at an angle θT and angle θR in a tangent and radial direction with respect to a main body unit 50 and the objective lens 4 is fixed at the inclination position of the prescribed angle θby rotating the screws of tangent and radial direction through-parts 41 and 42 so as to minimize the deviation in the focus error signal by the inclination position regulation of the objective lens 4. The angle θof the optical axis of the objective lens 4 for setting the image height of the objective lens 4 with respect to the optical axis is regulated to determine θin such a manner that the astigmatism occurring in consequence of the image height of the objective lens 4 and the astigmatism by the factor of the optical system exclusive thereof are negated with each other, by which the astigmatism possessed by the optical system may be minimized.

5. 发明专利

JP2000076684A Information recorder 审中-公开
标题翻译：信息记录器
公开(公告)号：JP2000076684A
公开(公告)日：2000-03-14
申请号：JP24697098
申请日：1998-09-01
申请人： Pioneer Electronic Corp , パイオニア株式会社
发明人： SHIMODA YOSHITAKA , YOSHIDA MASAYOSHI , YANAGAWA NAOHARU
IPC分类号： G11B7/0045 , G11B7/125 , G11B19/28
CPC分类号： G11B7/126 , G11B7/0045 , G11B19/28
摘要： PROBLEM TO BE SOLVED: To provide an information recorder which properly controls a laser power, records at a constant turning angle velocity onto an optical disk corresponding to CLV(contact linear velocity) system, and is able to search at a high-speed in a record sequence.
SOLUTION: On an information recorder, a DVD-R 1 is driven to rotate by a spindle motor 17, etc., with a constant turning angle velocity. A wobbling signal is obtained by a wobbling signal generating part 22 from a push-pull signal based on the reflected light of a light beam emitted by an optical pickup, and is binarized by a binarizing circuit 23, and then, the wobbling frequency is detected by a frequency detecting part 24 and outputted to a CPU 11. Based on this, the CPU calculates the optimal recording power of semiconductor laser 14a corresponding to the linear velocity of the DVD-R 1, and instructs a power control part 16 for a laser driving circuit 15 to drive the semiconductor laser 14a with this optimal recording power. Consequently, it is possible to perform a laser power control accurately following up the variation in the linear velocity of the DVD-R 1 when written, and also to perform a high speed search even in a record sequence.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：为了提供适当地控制激光功率的信息记录器，以恒定的转角速度记录到对应于CLV（接触线速度）系统的光盘上，并且能够以高速搜索记录顺序。解决方案：在信息记录器上，通过主轴电机17等驱动DVD-R 1以恒定的转角速度旋转。基于由光学拾取器发射的光束的反射光，通过摆动信号产生部22从推挽信号获得摆动信号，并由二值化电路23二值化，然后检测摆动频率通过频率检测部分24并输出到CPU 11.基于此，CPU根据DVD-R 1的线速度计算半导体激光器14a的最佳记录功率，并且指示功率控制部分16用于激光驱动电路15以这种最佳记录功率驱动半导体激光器14a。因此，可以在写入DVD-R 1的线速度的变化时精确地执行激光功率控制，并且即使在记录顺序中也执行高速搜索。

6. 发明专利

JPH10198983A OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH10198983A
公开(公告)日：1998-07-31
申请号：JP494597
申请日：1997-01-14
申请人： PIONEER ELECTRONIC CORP
发明人： YANAGAWA NAOHARU , SANO FUMIHIKO , SUZUKI HIROSHI , SUZUKI SHINJI , SUZUKI YASUMITSU , NAKAHARA YOSHINORI
IPC分类号： G11B11/10 , G11B7/003 , G11B7/0033 , G11B7/09 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To make a light beam accurately followable to a code track even if such a tracking deviation is generated that cannot be followed only by driving an objective lens, in an optical information recording and reproducing device using an optical memory card, etc. SOLUTION: Firstly, in a rotary type optical information recording and reproducing device, when a tracking error is generated which cannot be corrected at a tracking control by driving an objective lens, a piezoelectric element PD is provided which moves an optical memory card 1 constraining a code track TR with an entire tray 1A in a direction perpendicular to a transport direction of this optical memory card 1, and the piezo-electric element PD is driven by a piezo-electric element drive signal Stss taken out of a tracking error signal as its low frequency component. Secondly, in an optical information recording and reproducing device of a reciprocal method, and the device is arranged so that the code track on the optical card 1 is always correctly irradiated with the light beam, by turning the entire tray, on which an optical memory card is mounted, centering one point extended in a moving direction of the optical memory card 1.

7. 发明专利

JP2578203B2 失效
公开(公告)号：JP2578203B2
公开(公告)日：1997-02-05
申请号：JP11202589
申请日：1989-05-02
申请人： PIONEER ELECTRONIC CORP
发明人： SATO KATSUHARU , YANAGAWA NAOHARU
IPC分类号： G11B11/10 , G11B11/105

8. 发明专利

JPH07220280A CALIBRATION METHOD FOR DRAW TYPE OPTICAL DISK RECORDING DEVICE AND DEVICE THEREFOR 失效
公开(公告)号：JPH07220280A
公开(公告)日：1995-08-18
申请号：JP694394
申请日：1994-01-26
申请人： PIONEER ELECTRONIC CORP
发明人： INOUE AKIMASA , TANIGUCHI TERUSHI , KAWANO EISAKU , YANAGAWA NAOHARU , SUZUKI HIROSHI
IPC分类号： G11B5/596 , G11B7/00 , G11B7/0045 , G11B7/125 , G11B7/126
摘要： PURPOSE:To optimize a video signal by detecting a carrier level and an error rate and determining an optimal recording power so that the carrier error rate becomes larger than a first prescribed value and the error rate becomes smaller than a second prescribed value. CONSTITUTION:Recording and reproducing are performed in a PCA region and whether an evaluation standard A is satisfied or not is judged. In order that the evaluation standard A is satisfied it is required that a reproducing error rate is smaller than a prescribed value. Next, whether a recording power Pw is a settable maximum value Pmax or not is judged. When Pw is not the maximum value, a recording duty is decreased by a prescribed amount and the above steps is repeated. Based on a figure showing the changes of the error rate and the carrier level due to the change of recording power and the changes of the error rate and the carrier level due to the change of a recording duty (DUTY), the optimal recording power and recording duty are determined. Consequently, a video signal is made the optimal state.

9. 发明专利

JPH06314465A OPTICAL DISK DEVICE 失效
公开(公告)号：JPH06314465A
公开(公告)日：1994-11-08
申请号：JP10392493
申请日：1993-04-30
申请人： PIONEER ELECTRONIC CORP
发明人： YANAGAWA NAOHARU
IPC分类号： G11B7/00 , G11B7/004 , G11B7/095 , G11B19/12
摘要： PURPOSE:To prevent an erroneous recording by discriminating whether the disk is not recorded yet or already recorded in the manner that the kind of the disk is decided by detecting reflectances of two or more lights having different wavelengths against the optical disk. CONSTITUTION:One of the output signals of a tilt sensor 2 is supplied to an output terminal through an operational amplifier 7 as the use for detecting the tilt of the disk. Another output of the sensor 2 is supplied to an arithmetic circuit 17 through an operational amplifier 8 as a DC output signal 1 (circled mark) for detecting the kind of the disk. One of the output signals from an optical pickup 3 is supplied to an output terminal 14 through an operational amplifier 9. Another output signal is supplied to the circuit 17 through an operational amplifier 10 as a DC output signal 2 (circled mark) for detecting the disk. The reflecting light of the disk 1 is detected by a PD and inputted to the circuit 17 through an operational amplifier 11 as a DC signal 3 (circled mark) for detecting the kind of the disk. The reflectances of three kinds of lights are calculated by the circuit 17, and from these outputs, the kind of the disk is discriminated by a detection circuit 18.

10. 发明专利

JPH06309778A REPRODUCING DEVICE FOR OPTICAL INFORMATION 失效
公开(公告)号：JPH06309778A
公开(公告)日：1994-11-04
申请号：JP10064793
申请日：1993-04-27
申请人： PIONEER ELECTRONIC CORP
发明人： YANAGAWA NAOHARU
IPC分类号： G11B7/00 , G11B7/005 , G11B19/12
摘要： PURPOSE:To prevent a recordable disk from being recorded by reproducing power by discriminating a kind of a disk by a reflection factor of light for a disk and controlling a disk device in accordance with a kind of a disk. CONSTITUTION:When an output of a tilt sensor 3 is larger than a prescribed value, a detecting circuit 8 discriminates it as an exclusive reproducing disk based on an output of a differential amplifier 7, when an output of the tilt sensor 3 is smaller than the prescribed value, the circuit 8 discriminates it as a recordable disk. When it is discriminated as a recordable disk, each servo gain is adjusted to a recording disk. Next, in order to prevent disappearance of information written in the disk, after the disk is rotated, a semiconductor laser LD is turned on, and a focus servo routine is performed.

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