公开(公告)号：US4532522A

公开(公告)日：1985-07-30

申请号：US408678

申请日：1982-08-16

申请人： Yoshito Tsunoda ,  Takeshi Maeda ,  Shigeru Nakamura ,  Toshimitsu Kaku

发明人： Yoshito Tsunoda ,  Takeshi Maeda ,  Shigeru Nakamura ,  Toshimitsu Kaku

IPC分类号： G02B27/42 ,  G11B7/00 ,  G11B7/004 ,  G11B7/08 ,  G11B7/09 ,  G11B7/095 ,  G11B7/125 ,  G11B21/10

CPC分类号： G11B7/09 ,  G11B7/0903 ,  G11B7/125

摘要： An optical recording apparatus wherein in front and rear of a first light spot for recording predetermined information along a guide groove provided in a recording medium beforehand, two second light spots and two third light spots are arranged along the guide groove and in a manner to mutually deviate from the center of the guide groove; the second light spots are arranged in an area with no information recorded therein, while the third light spots are arranged in an area with the information recorded therein; and the position of the first light spot is controlled on the basis of the difference between the quantities of light of the second light spots and the difference between the quantities of light of the third light spots, so as to track the information.

摘要翻译： 一种光学记录装置，其特征在于，在预先在设置于记录介质中的引导槽记录预定信息的第一光点的前方和后方，沿引导槽配置两个第二光点和两个第三光点， 偏离导槽的中心; 第二光点被布置在没有记录信息的区域中，而第三光点被布置在其中记录有信息的区域中; 并且基于第二光点的光量与第三光点的光量之差的差来控制第一光点的位置，以便跟踪信息。

公开(公告)号：US4731771A

公开(公告)日：1988-03-15

申请号：US829024

申请日：1986-02-13

申请人： Takeshi Maeda ,  Kazuo Shigematsu ,  Shigeru Nakamura ,  Yoshito Tsunoda ,  Masuo Kasai

发明人： Takeshi Maeda ,  Kazuo Shigematsu ,  Shigeru Nakamura ,  Yoshito Tsunoda ,  Masuo Kasai

IPC分类号： G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08529 ,  G11B7/08517 ,  G11B7/0901

摘要： This invention relates to a track setting method for a tracking servo system in an optical disk device and a device therefor. According to this invention the track passage velocity when the light spot moves across the track is detected and setting of the light spot onto the track is performed under the condition that the passage velocity thus detected is lower than a predetermined velocity. In the case where the passage velocity is greater than the predetermined velocity, the light spot is forced to move so that the passage velocity is lower than the predetermined velocity and the light spot is set up thereafter.

摘要翻译： 本发明涉及一种用于光盘装置中的跟踪伺服系统的轨道设置方法及其装置。 根据本发明，检测到光点移动通过轨迹时的轨迹通过速度，并且在由此检测到的通过速度低于预定速度的条件下执行光点到轨道上的设置。 在通过速度大于预定速度的情况下，迫使光斑移动，使得通过速度低于预定速度，此后设定光斑。

公开(公告)号：US4563760A

公开(公告)日：1986-01-07

申请号：US401020

申请日：1982-07-22

申请人： Takeshi Maeda ,  Kazuo Shigematsu ,  Masahiro Takasago ,  Yasumitsu Mizoguchi ,  Zenji Tsutsumi ,  Yoshito Tsunoda ,  Motoo Uno

发明人： Takeshi Maeda ,  Kazuo Shigematsu ,  Masahiro Takasago ,  Yasumitsu Mizoguchi ,  Zenji Tsutsumi ,  Yoshito Tsunoda ,  Motoo Uno

IPC分类号： G02B7/28 ,  G11B7/08 ,  G11B7/09 ,  G11B7/00

CPC分类号： G11B7/08 ,  G11B7/09 ,  G11B7/0901 ,  G11B7/0941

摘要： A method of detecting a light spot control signal is disclosed in which, when information is reproduced from an optical disk for optically recording information, a signal level obtained at a high-reflectivity portion of the optical disk is taken out of a signal reproduced from the optical disk, and is used as a control signal, which controls a light spot so that it tracks information stored in the optical disk.

摘要翻译： 公开了一种检测光点控制信号的方法，其中当从用于光学记录信息的光盘再现信息时，从从光盘中再现的信号中取出在光盘的高反射率部分获得的信号电平 光盘，并且被用作控制信号，其控制光点，使得其跟踪存储在光盘中的信息。

公开(公告)号：US4364118A

公开(公告)日：1982-12-14

申请号：US160199

申请日：1980-06-17

申请人： Takeshi Maeda ,  Kazuo Shigematsu ,  Seiji Yonezawa

发明人： Takeshi Maeda ,  Kazuo Shigematsu ,  Seiji Yonezawa

IPC分类号： G11B7/004 ,  G11B7/09 ,  G11B7/12 ,  G11B20/14 ,  G11B7/00 ,  G11B21/04

CPC分类号： G11B7/004 ,  G11B20/1426 ,  G11B7/0938 ,  G11B7/12

摘要： An optical disk for accumulating information in the form in which an information signal can be optically read, wherein to the end of additionally recording information, a line of pits are arrayed at periodical intervals on an information recording carrier and are recorded in a manner to minutely wobble in the rotating direction of the disk at a fixed period.

摘要翻译： 一种用于以可光学读取信息信号的形式累积信息的光盘，其中，在附加地记录信息的结束时，在信息记录载体上以周期性间隔排列凹坑线，并且以微小的方式记录 以固定的时间在盘的旋转方向摆动。

公开(公告)号：US4646103A

公开(公告)日：1987-02-24

申请号：US832887

申请日：1986-02-26

申请人： Hisataka Sugiyama ,  Kazuo Shigematsu ,  Takeshi Maeda ,  Atsushi Saitoh ,  Wasao Takasugi

发明人： Hisataka Sugiyama ,  Kazuo Shigematsu ,  Takeshi Maeda ,  Atsushi Saitoh ,  Wasao Takasugi

IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B20/10 ,  G11B20/14 ,  G01D15/14 ,  G11B7/00 ,  G11B21/10

CPC分类号： G11B7/126 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/1053 ,  G11B20/10009 ,  G11B20/1403 ,  G11B7/0045 ,  G11B7/24085

摘要： In an optical recording system wherein the intensity of a laser beam is modulated with an input modulation signal so as to record information on a recording medium, the intensity modulation of the laser beam is performed after the pulse waveform of the input modulation signal is converted into two pulses which express the front edge and rear edge of the pulse waveform respectively.

摘要翻译： 在其中利用输入调制信号调制激光束的强度以将信息记录在记录介质上的光学记录系统中，在将输入调制信号的脉冲波形转换成 两个脉冲分别表示脉冲波形的前沿和后沿。

公开(公告)号：US4241240A

公开(公告)日：1980-12-23

申请号：US954869

申请日：1978-10-26

申请人： Kazuo Shigematsu ,  Keizo Kato ,  Toshimitsu Miyauchi ,  Seiji Yonezawa ,  Fumiyuki Inose ,  Kimio Tatsuno ,  Takeshi Maeda

发明人： Kazuo Shigematsu ,  Keizo Kato ,  Toshimitsu Miyauchi ,  Seiji Yonezawa ,  Fumiyuki Inose ,  Kimio Tatsuno ,  Takeshi Maeda

IPC分类号： H04N5/85 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/095 ,  G11B17/00 ,  G11B27/02 ,  H04N5/76 ,  G11B7/12

CPC分类号： G11B17/005 ,  G11B27/02 ,  G11B7/0953

摘要： An optical information recording and reproducing apparatus is disclosed in which a predetermined signal is recorded on a track of a rotating recording medium by a recording light beam and the recorded information is reproduced by a reproducing light beam. The information recorded on the last record track is reproduced by the recording beam and the reproducing beam and radiating position of the recording beam on the recording medium is displaced by a predetermined distance from the last record track.

摘要翻译： 公开了一种光信息记录和再现装置，其中通过记录光束将预定信号记录在旋转记录介质的轨道上，并且通过再现光束再现记录信息。 记录在最后记录轨道上的信息由记录光束再现，并且记录光束的再现光束和记录光束的照射位置离开最后的记录轨道一预定的距离。

公开(公告)号：US07057996B2

公开(公告)日：2006-06-06

申请号：US11002895

申请日：2004-12-03

申请人： Hidehiko Kando ,  Takeshi Maeda ,  Hiroyuki Minemura ,  Tsuyoshi Toda ,  Yasushi Miyauchi ,  Mitsuhide Miyamoto

发明人： Hidehiko Kando ,  Takeshi Maeda ,  Hiroyuki Minemura ,  Tsuyoshi Toda ,  Yasushi Miyauchi ,  Mitsuhide Miyamoto

IPC分类号： G11B5/76

CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/00736

摘要： An information recording apparatus having an energy beam generator for generating an energy beam, a power adjusting mechanism for setting a power level of the energy beam to a first power level state and a second power level state which is higher than the first power level state and a circuit for generating a basic recording pattern to record a recording medium. When a period of a recording timing generating clock in a recording mode is T, and a relative velocity of the energy beam and the recording medium is v, the circuit forming a sequence of the first and second power level states so as to effect recording.

摘要翻译： 一种具有用于产生能量束的能量束发生器的信息记录装置，用于将能量束的功率电平设置为第一功率电平状态的功率调节机构和高于第一功率电平状态的第二功率电平状态，以及 用于产生用于记录记录介质的基本记录图案的电路。 当记录模式的记录定时产生时钟的周期为T时，能量束和记录介质的相对速度为v，该电路形成第一和第二功率电平状态的序列以便进行记录。

公开(公告)号：US06909682B2

公开(公告)日：2005-06-21

申请号：US10655005

申请日：2003-09-05

申请人： Hidehiko Kando ,  Takeshi Maeda ,  Hiroyuki Minemura ,  Tsuyoshi Toda ,  Yasushi Miyauchi ,  Mitsuhide Miyamoto

发明人： Hidehiko Kando ,  Takeshi Maeda ,  Hiroyuki Minemura ,  Tsuyoshi Toda ,  Yasushi Miyauchi ,  Mitsuhide Miyamoto

IPC分类号： G11B7/0045 ,  G11B7/006 ,  G11B7/007 ,  G11B7/125 ,  G11B5/76

CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/00736

摘要： An information recording method using a recording medium having a first state by a first power level of an energy beam and a second state by a second power level of the energy beam higher than the first power level. When a period of a recording time generating clock in a recording mode is T, and a relative velocity of the energy beam and the recording medium is V, the method includes forming a sequence of the second state with length avT (first mark), the first state with length ivT (first space) following the first mark, the second state with length mvT (second mark) following the first space, the first state with length jvT (second space) following the second mark and the second state with length bvT (third mark) following the second space as a first small recording pattern.

摘要翻译： 一种使用具有第一状态的能量束的第一功率电平和第二状态的记录介质的信息记录方法，所述记录介质的能量束的第二功率电平高于所述第一功率电平。 当以记录模式生成时钟的记录时间的周期为T，能量束和记录介质的相对速度为V时，该方法包括形成具有长度avT（第一标记）的第二状态的序列， 在第一标记之后具有长度为ivT（第一空格）的第一状态，跟随第一空格的长度为mvT（第二标记）的第二状态，具有第二标记的长度为jvT（第二空格）的第一状态和具有长度bvT的第二状态 （第三标记）作为第一小记录模式。

公开(公告)号：US06680888B2

公开(公告)日：2004-01-20

申请号：US09971686

申请日：2001-10-09

申请人： Tsuyoshi Toda ,  Shigeru Nakamura ,  Takeshi Maeda

发明人： Tsuyoshi Toda ,  Shigeru Nakamura ,  Takeshi Maeda

IPC分类号： G11B700

CPC分类号： G11B7/126 ,  G11B7/00454 ,  G11B7/006

摘要： An information recording/reproducing apparatus includes a detector circuit for detecting a state of reflection light from the recording medium, a control circuit for calculating a radiation power used for writing the information in the recording medium, in accordance with the reflection light state, a pulse generator circuit for generating record pulse information in accordance with the radiation power, and an optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium. Accordingly, the apparatus records information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and reads the information recorded in the record area.

摘要翻译： 一种信息记录/再现装置，包括用于检测来自记录介质的反射光的状态的检测器电路，用于根据反射光状态计算用于将信息写入记录介质中的辐射功率的控制电路，脉冲 发生器电路，用于根据辐射功率产生记录脉冲信息;以及光驱动器电路，用于根据辐射功率将记录脉冲信息转换成光信息，并驱动光头以将光信息记录到记录介质中。 因此，该装置通过将来自光头的光应用到记录介质的记录区域并改变记录区的状态并读取记录在记录区中的信息来记录信息。

公开(公告)号：US06304533B2

公开(公告)日：2001-10-16

申请号：US09752462

申请日：2001-01-03

申请人： Tsuyoshi Toda ,  Shigeru Nakamura ,  Takeshi Maeda

发明人： Tsuyoshi Toda ,  Shigeru Nakamura ,  Takeshi Maeda

IPC分类号： G11B700

CPC分类号： G11B7/126 ,  G11B7/00454 ,  G11B7/006

摘要： An information recording/reproducing apparatus includes a detector circuit for detecting a state of reflection light from the recording medium, a control circuit for calculating a radiation power used for writing the information in the recording medium, in accordance with the reflection light state, a pulse generator circuit for generating record pulse information in accordance with the radiation power, and an optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium. Accordingly, the apparatus records information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and reads the information recorded in the record area.