公开(公告)号：US06777657B2

公开(公告)日：2004-08-17

申请号：US10114027

申请日：2002-04-03

Applicant: Yoshimichi Nishio ,  Yoshihiro Hashizuka ,  Kazunori Matsuo ,  Takeshi Sato ,  Morio Nozaki ,  Hitoshi Yamazaki ,  Kazuhiko Oogami ,  Yoshitaka Makino ,  Hideaki Yoshimura

Inventor： Yoshimichi Nishio ,  Yoshihiro Hashizuka ,  Kazunori Matsuo ,  Takeshi Sato ,  Morio Nozaki ,  Hitoshi Yamazaki ,  Kazuhiko Oogami ,  Yoshitaka Makino ,  Hideaki Yoshimura

IPC: G11B709

CPC classification number: G11B7/08511 ,  G11B7/08529 ,  G11B2007/0013

Abstract: A focusing controller executes an appropriate focus jump even in a multilayer disk having layers of characteristics greatly different from each other. The focusing controller has an optical pickup including an objective lens for converging the light beam and a detector for receiving reflected light from the multilayer recording medium; an error signal generator for generating a focus error signal of the irradiated light beam from a detecting signal of the detector; an actuator for operating the objective lens; and a controller for controlling a focusing position of the light beam by operating the actuator based on the focus error signal. The controller calculates intensities of the reflected lights of two layers based on the detecting signal of the detector, and thus controls the timings of acceleration and deceleration signals of a focus jump between these two layers.

Abstract translation: 即使在具有彼此极大不同的特征层的多层盘中，聚焦控制器执行适当的聚焦跳跃。 聚焦控制器具有包括用于会聚光束的物镜的光学拾取器和用于接收来自多层记录介质的反射光的检测器; 误差信号发生器，用于根据检测器的检测信号产生照射光束的聚焦误差信号; 用于操作物镜的致动器; 以及控制器，用于通过基于聚焦误差信号操作致动器来控制光束的聚焦位置。 控制器基于检测器的检测信号计算两层反射光的强度，从而控制这两层之间的聚焦跳跃的加速和减速信号的定时。

公开(公告)号：US06606284B1

公开(公告)日：2003-08-12

申请号：US09444571

申请日：1999-11-19

Applicant: Masato Sakamoto ,  Katsunori Tamamura ,  Kazuhiko Oogami ,  Norikazu Tada ,  Atsushi Kusaka ,  Akihito Fujiwara ,  Mayumi Takahashi

Inventor： Masato Sakamoto ,  Katsunori Tamamura ,  Kazuhiko Oogami ,  Norikazu Tada ,  Atsushi Kusaka ,  Akihito Fujiwara ,  Mayumi Takahashi

IPC: G11B7095

CPC classification number: G11B7/126 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0941 ,  G11B7/0945 ,  G11B20/10009

Abstract: A gain controlling apparatus includes a pre-amplifier for roughly adjusting a gain of a generation signal, which is generated on the basis of a reception signal from an optical disc; a variable amplifier for finely adjusting the gain on the basis of the roughly adjusted gain by the pre-amplifier; a memory for storing a plurality of values for adjusting the gain generated during a previous occasion of gain adjustment in time series; and a controlling device for controlling the pre-amplifier at a current occasion of gain adjustment on the basis of the respective stored values for adjusting the gain and controlling the variable amplifier, wherein the controlling device comprises a predicting device for predicting a current adjustment value, namely an adjusted value for the gain roughly adjusted at the current occasion by the pre-amplifier, and the controlling device controls the pre-amplifier on the basis of the predicted current adjustment value.

Abstract translation: 增益控制装置包括：前置放大器，用于粗略地调整基于来自光盘的接收信号产生的发生信号的增益; 一个可变放大器，用于根据前置放大器粗略调节的增益来精细调整增益; 存储器，用于存储用于调整在先前的时间序列增益调整期间产生的增益的值; 以及控制装置，用于根据用于调节增益的各个存储值和控制可变放大器，在当前增益调整的情况下控制前置放大器，其中控制装置包括用于预测当前调整值的预测装置， 即通过前置放大器在当前情况下大致调整的增益的调整值，并且控制装置根据预测的电流调整值来控制前置放大器。

公开(公告)号：US20070133376A1

公开(公告)日：2007-06-14

申请号：US10594624

申请日：2005-03-30

Applicant: Shinichiro Abe ,  Hiroyuki Enomoto ,  Kazuhiko Oogami ,  Kazushige Kawana ,  Teruo Takahashi

Inventor： Shinichiro Abe ,  Hiroyuki Enomoto ,  Kazuhiko Oogami ,  Kazushige Kawana ,  Teruo Takahashi

IPC: G11B7/00

CPC classification number: G11B20/1816 ,  G11B7/00375 ,  G11B7/0945 ,  G11B7/1263 ,  G11B2020/1869

Abstract: For providing a read apparatus and a method of detecting deterioration of a disk, which can detect the deterioration of the disk securely at a low cost, when focus adjust and tracking adjust of an optical pick-up 3 can be acted normally within adjustable range by a servo DSP 5, the deterioration of the disk is detected based on a focus adjust value and a tracking adjust value.

Abstract translation: 为了提供读取装置和检测盘的劣化的方法，其可以以低成本可靠地检测盘的劣化，当光学拾取器3的焦点调整和跟踪调节可以通过正常的方式在可调整范围内作用 伺服DSP5，基于焦点调整值和跟踪调整值来检测盘的劣化。

公开(公告)号：US20060008258A1

公开(公告)日：2006-01-12

申请号：US11138316

申请日：2005-05-27

Applicant: Kazushige Kawana ,  Akihiro Hashimoto ,  Kazuhiko Oogami ,  Hideyasu Iwano ,  Hiroyuki Enomoto ,  Shinichiro Abe ,  Hiroyuki Akama ,  Masakazu Takahashi

Inventor： Kazushige Kawana ,  Akihiro Hashimoto ,  Kazuhiko Oogami ,  Hideyasu Iwano ,  Hiroyuki Enomoto ,  Shinichiro Abe ,  Hiroyuki Akama ,  Masakazu Takahashi

IPC: H04N5/781

CPC classification number: G11B27/34 ,  G11B27/3027 ,  H04N5/7805 ,  H04N9/8205

Abstract: An information reproducing device includes a setting unit that sets priority for displaying appended data appended to compressed data in a compressed data file, such as an MP3 file. The appended data is appended at various positions to the compressed data. A reading unit reads a compressed data file, an extracting unit extracts appended data from the compressed data file based on the priority set, and a display unit displays the extracted appended data. A reproducing unit reproduces the compressed data.

Abstract translation: 信息再现装置包括设置单元，该设置单元设置在压缩数据文件（例如MP3文件）中显示附加到压缩数据的附加数据的优先级。 附加数据被附加到压缩数据的各个位置。 读取单元读取压缩数据文件，提取单元基于优先级设置从压缩数据文件中提取附加数据，并且显示单元显示所提取的附加数据。 再现单元再现压缩数据。

公开(公告)号：US06510112B1

公开(公告)日：2003-01-21

申请号：US09443438

申请日：1999-11-19

Applicant: Masato Sakamoto ,  Katsunori Tamamura ,  Kazuhiko Oogami ,  Norikazu Tada ,  Atsushi Kusaka ,  Akihito Fujiwara ,  Mayumi Takahashi

Inventor： Masato Sakamoto ,  Katsunori Tamamura ,  Kazuhiko Oogami ,  Norikazu Tada ,  Atsushi Kusaka ,  Akihito Fujiwara ,  Mayumi Takahashi

IPC: G11B700

CPC classification number: G11B7/0948 ,  G11B7/0903

Abstract: An apparatus for driving an optical pickup for a tracking servo control. The apparatus includes an emitting device disposed in the optical pickup for emitting a main beam to a first position on an information track of a recording medium and emitting at least two subsidiary beams to a second position and a third position on the information track of the recording medium, respectively. The positions of the main beam and the subsidiary beams are determined appropriately for a three beam method. The apparatus further includes: a tracking error signal generating device for generating a tracking error signal using returned light beams of the subsidiary beams from the recording medium; a driving device for moving the first position of the main beam and the second position and the third position of the subsidiary beams with respect to the recording medium; a tracking control device for outputting a driving signal based on the tracking error signal to the driving device; and a detecting device for detecting a damaged part on the recording medium. The tracking control device generates a pulse signal having a polarity opposite to a disturbance part of the driving signal generated due to at least one of the subsidiary beams passing on the damaged part, and uses this pulse signal as a part of the driving signal.

Abstract translation: 一种用于驱动用于跟踪伺服控制的光学拾取器的装置。 该装置包括设置在光学拾取器中的发射装置，用于将主光束发射到记录介质的信息轨道上的第一位置，并将至少两个辅助光束发射到记录的信息轨道上的第二位置和第三位置 中等。 主波束和辅助波束的位置适用于三波束法。 该装置还包括：跟踪误差信号发生装置，用于使用从记录介质返回的辅助光束的光束产生跟踪误差信号; 用于使主光束的第一位置和辅助光束的第二位置和第三位置相对于记录介质移动的驱动装置; 跟踪控制装置，用于将驱动信号基于跟踪误差信号输出到驱动装置; 以及用于检测记录介质上的损坏部分的检测装置。 跟踪控制装置产生与通过损坏部分的至少一个辅助光束所产生的驱动信号的干扰部分相反极性的脉冲信号，并将该脉冲信号用作驱动信号的一部分。