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50 条记录 (耗时 0.016 秒)

    Optical information recording apparatus
    2.
    发明公开
    Optical information recording apparatus 审中-公开
    该光学信息记录装置

    公开(公告)号：EP1156482A3

    公开(公告)日：2004-01-28

    申请号：EP01111245.5

    申请日：2001-05-15

    申请人： Pioneer Corporation

    发明人： Yamaguchi, Atsushi ,  Kato, Masahiro

    IPC分类号： G11B7/125

    CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B11/1053 ,  G11B11/10595

    摘要： A drive pulse for writing is generated based on a data pulse signal to be recorded, a light source element is driven with this drive pulse to obtain a beam of light, and this beam of light is irradiated onto an optical recording medium to record the data pulse signal on the optical recording medium. When the drive pulse is generated, a write pulse is generated based on the data pulse signal, and compared with a beam intensity signal representing intensity of the beam of light to optimally control a pulse width of the drive pulse.

    Pre-pit detecting apparatus for optical recording medium
    3.
    发明公开
    Pre-pit detecting apparatus for optical recording medium 审中-公开
    Prepitdetektorfüroptisches Speichermedium

    公开(公告)号：EP1229533A3

    公开(公告)日：2003-09-17

    申请号：EP02002572.2

    申请日：2002-02-04

    申请人： Pioneer Corporation

    发明人： Kato, Masahiro ,  Yanagawa, Naoharu ,  Yone, Tatsuhiro ,  Muramatsu, Yuko ,  Suzuki, Shinji

    IPC分类号： G11B19/12 ,  G11B7/00 ,  G11B7/013 ,  G11B7/007 ,  G11B27/19 ,  G11B27/24

    CPC分类号： G11B19/12 ,  G11B7/005 ,  G11B7/00745

    摘要： A pre-pit detecting apparatus which, when a light beam is radiated onto an optical recording medium having a recording surface with pre-pits repeatedly formed between tracks, receives light reflected by the recording surface with first and second light receiving faces, obtains the push-pull signal corresponding to the light receiving signals for the first and second light receiving faces, and binarizes the push-pull signal by using a threshold value to generate a pre-pit detection signal. It is judged which area of a plurality of areas including at least a not-yet-recorded area corresponds to a position of the recording surface where the light beam is radiated is performed to judge. Then the threshold value is set in accordance with the judgement result.

    摘要翻译： 一种预凹坑检测装置，当将光束照射到具有在轨迹之间重复形成的预凹坑的记录表面的光记录介质上时，接收由第一和第二光接收面反射的记录表面的光，获得推 - 对应于第一和第二光接收面的光接收信号的 - 空信号，并且通过使用阈值来二值化推挽信号以产生预凹坑检测信号。 判断包括至少未记录区域的多个区域的哪个区域对应于执行光束的记录表面的位置进行判断。 然后根据判断结果设定阈值。

    Rewritable optical recording medium and manufacturing method and apparatus therefor
    4.
    发明公开
    Rewritable optical recording medium and manufacturing method and apparatus therefor 有权
    Wiederbeschreibbares眼科Aufzeichnungsmedium，Verfahren undGerätzu seiner Herstellung

    公开(公告)号：EP1170733A3

    公开(公告)日：2003-01-15

    申请号：EP01115652.8

    申请日：2001-07-03

    申请人： Pioneer Corporation

    发明人： Sasaki, Yoshio ,  Maruyama, Toshihiko ,  Muramatsu, Eiji ,  Kato, Masahiro ,  Oshima, Seiro ,  Tagiri, Takao

    IPC分类号： G11B7/007 ,  G11B7/013

    CPC分类号： G11B7/261 ,  G11B7/007

    摘要： A rewritable optical recording medium includes a segmented groove area (12A) in which the groove track is segmented along a rotating direction of the recording medium by groove non-forming portions to form a plurality of groove portions; and a continuous groove area (12B) in which a continuous groove is formed, the continuous groove having a groove width smaller than a groove width in the segmented groove area.

    摘要翻译： 可重写光学记录介质包括分段凹槽区域（12A），其中凹槽轨道通过凹槽非成形部分沿着记录介质的旋转方向分割以形成多个凹槽部分; 以及形成连续槽的连续槽区域（12B），所述连续槽的槽宽度小于所述分割槽区域的槽宽度。

    Optical recording medium
    5.
    发明公开
    Optical recording medium 有权
    OptischerAufzeichnungsträger

    公开(公告)号：EP1043714A3

    公开(公告)日：2002-01-30

    申请号：EP00107085.3

    申请日：2000-04-05

    申请人： Pioneer Corporation

    发明人： Takishita, Toshihiko ,  Kato, Masahiro ,  Muramatsu, Eiji ,  Horikawa, Kunihiko ,  Taniguchi, Shoji ,  Yamaguchi, Atsushi

    IPC分类号： G11B7/007

    CPC分类号： G11B7/261 ,  G11B7/007 ,  G11B7/24079 ,  G11B7/24082 ,  G11B7/24085

    摘要： An optical recording medium which can produce a read signal free from waveform distortion during reproduction of information. The optical recording medium comprises groove information tracks on which information pits carrying information data is to be formed, and prepit tracks provided with a plurality of previously formed land prepits connected to the groove information tracks. The groove information tracks and the prepit tracks are arranged in alternation. The groove information track has a track width smaller in at least a part of each of sections in which the land prepit exists than in sections in which no land prepit exists.

    摘要翻译： 一种光学记录介质，其可以在再现信息期间产生没有波形失真的读取信号。 该光记录介质包括凹槽信息轨道，在其上将形成携带信息数据的信息坑，以及预先设有多个预先形成的凹槽信息轨迹的预定凹坑的预凹坑道。 凹槽信息轨道和预凹坑轨迹交替排列。 沟槽信息轨道在存在土地预制品的每个部分的至少一部分中的轨道宽度小于不存在土地预制物的部分中的轨道宽度。

    Data reading device and pre-pit detection circuit
    9.
    发明公开
    Data reading device and pre-pit detection circuit 审中-公开
    数据读取装置和电路，用于检测预凹坑

    公开(公告)号：EP1548712A3

    公开(公告)日：2006-04-05

    申请号：EP04027982.0

    申请日：2004-11-25

    申请人： Pioneer Corporation

    发明人： Yanagawa, Naoharu ,  Kato, Masahiro ,  Yone, Tatsuhiro

    IPC分类号： G11B7/005

    CPC分类号： G11B7/0053 ,  G11B7/0953

    摘要： A data reading device which reads data recorded on a data recording medium on which pre-pits are formed in advance, includes a laser light source that emits a light beam, an objective lens that converges the light beam, an actuator that drives the objective lens, a light-receiving unit having first and second light-receiving regions split in a direction of recording tracks which receive a reflected light beam, an amplitude control unit (41,42) that adjusts an amplitude of an output signal output from at least one of the first and second light-receiving regions, a computing unit (33) that computes the output signal thereby generates a push-pull signal, a pre-pit detection unit (34) that detects a pre-pit signal on basis of the push-pull signal, and an extraction unit (44) that extracts an eccentricity component of the data recording medium. Preferably, the amplitude control unit adjusts the amplitude on basis of the eccentricity component.

    Device and method for controlling tilt servo
    10.
    发明公开
    Device and method for controlling tilt servo 有权

    公开(公告)号：EP1213712A3

    公开(公告)日：2004-09-08

    申请号：EP01128652.3

    申请日：2001-11-30

    申请人： Pioneer Corporation

    发明人： Yanagawa, Naoharu ,  Kato, Masahiro

    IPC分类号： G11B7/095 ,  G11B7/09 ,  G11B7/13

    CPC分类号： G11B7/131 ,  G11B7/0045 ,  G11B7/0956 ,  G11B7/126 ,  G11B7/1267 ,  G11B7/1369 ,  G11B2007/0006

    摘要： A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a split type photo detector and read signal generating means for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device generates a push-pull component signal including a differential component of output signals of respective split portions of the photo detector, generates a tilt error signal representing a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam based on the push-pull component signal, and drives tilt angle adjusting means for adjusting the tilt angle so as to reduce the tilt error signal.