公开(公告)号：US20040062188A1

公开(公告)日：2004-04-01

申请号：US10674461

申请日：2003-10-01

Applicant: PIONEER CORPORATION

Inventor： Kaoru Yamamoto ,  Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Iida

IPC: G11B007/24

CPC classification number: G11B7/26 ,  G11B7/00745 ,  Y10S425/81

Abstract: Preformatted areas in at least the most distal recording layer from an object lens among a plurality of recording layers in an optical disc include guard areas at both ends of the respective recording layer in the tracing direction. No data is recorded on the guard areas. The guard area length GL is determined to satisfy the following formula:GLnullYLnullTnull(NA/n)/null1null(NA/n)2null1/2where YL is a maximum allowable value of position deviation between the preformatted areas in the most distal recording layer and in another recording layer in the tracing direction; NA is the numerical aperture of the object lens;. T is a distance between the most distal and the another recording layer; and nullnnull is an refraction index of a medium between the most distal and the another recording layers.

Abstract translation: 在光盘中的多个记录层中，来自物镜的至少最远端的记录层中的预格式化区域包括在跟踪方向上的各个记录层的两端的保护区域。 防区没有数据记录。 保护区域长度GL被确定为满足以下公式：GL> = YL + Tx（NA / n）/ [1-（NA / n）2]其中YL是 在最远端记录层中的预格式化区域和跟踪方向上的另一记录层之间的位置偏差; NA是物镜的数值孔径。 T是最远端和另一记录层之间的距离; “n”是最远端和另一个记录层之间介质的折射率。

公开(公告)号：US20040233805A1

公开(公告)日：2004-11-25

申请号：US10793666

申请日：2004-03-05

Applicant: Pioneer Corporation

Inventor： Masayoshi Yoshida ,  Hiroki Kuribayashi ,  Kaoru Yamamoto

IPC: G11B007/00

CPC classification number: G11B7/0948

Abstract: A defect on a DVD-RAM is detected by using a track error signal TE and an RF signal before the decoding thereof, which are used for the position control of an optical pickup. Because the defect detection is performed by using the track error signal TE and the RF signal before the decoding thereof, even if the verification and reproduction of information are not performed, it is possible to make or update a defect list and increase the accuracy of the defect detection. It is possible to extract only information about the defect which is the obstacle of the information recording realistically and collect it on the defect list.

Abstract translation: 在用于光学拾取器的位置控制的解码之前，通过使用轨道误差信号TE和RF信号来检测DVD-RAM上的缺陷。 由于通过在解码之前使用轨道误差信号TE和RF信号来执行缺陷检测，即使不执行信息的验证和再现，也可以制造或更新缺陷列表并提高其精度 缺陷检测。 有可能仅提取作为信息记录的障碍的缺陷的信息，并将其收集到缺陷列表上。

公开(公告)号：US20020064124A1

公开(公告)日：2002-05-30

申请号：US09948785

申请日：2001-09-10

Applicant: Pioneer Corporation

Inventor： Kaoru Yamamoto ,  Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Iida

IPC: G11B007/24

CPC classification number: G11B7/26 ,  G11B7/00745 ,  Y10S425/81

Abstract: Preformatted areas in at least the most distal recording layer from an object lens among a plurality of recording layers in an optical disc include guard areas at both ends of the respective recording layer in the tracing direction. No data is recorded on the guard areas. The guard area length GL is determined to satisfy the following formula:GLnullYLnullTnull(NA/n)/null1null(NA/n)2nullnullwhere YL is a maximum allowable value of position deviation between the preformatted areas in the most distal recording layer and in another recording layer in the tracing direction; NA is the numerical aperture of the object lens; T is a distance between the most distal and the another recording layer; and nullnnull is an refraction index of a medium between the most distal and the another recording layers.

Abstract translation: 在光盘中的多个记录层中，来自物镜的至少最远端的记录层中的预格式化区域包括在跟踪方向上的各个记录层的两端的保护区域。 防区没有数据记录。 保护区域长度GL被确定为满足以下公式：<段落lvl =“0”> GL> = YL + Tx（NA / n）/ [1-（NA / n）2] ½其中YL是最远端记录层中的预格式化区域和跟踪方向上另一记录层之间的位置偏差的最大允许值; NA是物镜的数值孔径; T是最远端和另一记录层之间的距离; “n”是最远端和另一个记录层之间介质的折射率。

公开(公告)号：US20020048242A1

公开(公告)日：2002-04-25

申请号：US09968753

申请日：2001-10-03

Applicant: Pioneer Corporation

Inventor： Kaoru Yamamoto

IPC: G11B007/0045 ,  G11B007/24 ,  G11B007/125

CPC classification number: G11B7/126 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/00745

Abstract: A recording method includes a reading step of detecting a reflection light from a recording layer to which a recording is to be made and converting the detected light into a read signal; a detecting step of detecting a position of a preformatted area of a recording layer which the optical beam transmits therethrough other than the recording layer to which a recording is to be made; and a correcting step of correcting intensity of an irradiation light beam or a reproduced signal on the basis of the read signal and the preformatted area position. An apparatus for carrying out the recording method is also provided.

Abstract translation: 记录方法包括：读取步骤，检测来自记录层的记录层的反射光，并将检测到的光转换成读取信号; 检测步骤，检测除了要进行记录的记录层之外光束透射的记录层的预格式化区域的位置; 以及基于读取信号和预格式化区域位置来校正照射光束的强度或再现信号的校正步骤。 还提供了一种用于执行记录方法的设备。