RECORDING AND REPRODUCING DEVICE, RECORDING AND REPRODUCING METHOD, RECORDING DEVICE, RECORDING METHOD, REPRODUCING DEVICE AND REPRODUCING METHOD
    1.
    发明公开
    RECORDING AND REPRODUCING DEVICE, RECORDING AND REPRODUCING METHOD, RECORDING DEVICE, RECORDING METHOD, REPRODUCING DEVICE AND REPRODUCING METHOD 审中-公开
    记录和再现装置,记录和回放,录音设备,记录方法,重放设备和回放

    公开(公告)号:EP2180380A1

    公开(公告)日:2010-04-28

    申请号:EP08740992.6

    申请日:2008-05-01

    申请人: Sony Corporation

    IPC分类号: G03H1/04 G03H1/26

    摘要: A recording technique for performing data recording onto a hologram recording medium in accordance with information on phases by performing spatial light phase modulation as spatial light modulation corresponding to recording data, and a reproducing technique for reproducing recorded data by properly reading information on phases recorded as described above are suggested. A signal beam having a phase modulation pattern provided thereto corresponding to recording data and a reference beam having a specific phase modulation pattern provided thereto are applied to the hologram recording medium. Thus, recording data can be recorded onto the hologram recording medium in accordance with information on phases. In addition, at the time of reproduction, a reference beam and a DC beam having the entire phase whose phase difference with respect to a reference phase within the reference beam is π/2 are applied to the hologram recording medium. By providing a phase difference based on π/2 as described above, the phase of a reproduction beam obtained from the hologram recording medium in accordance with application of the reference beam and the phase of the DC beam can be set to be the same. Thus, the DC beam can be added as a component of an amplitude of "1" to the reproduction beam. By reading the reproduction beam to which the DC beam is added as described above, recorded information on phases can be correctly read, and recorded data can be reproduced in accordance with the phase information.

    摘要翻译: 用于通过执行空间光相位调制作为空间光调制对应于在数据记录到在与相位信息雅舞蹈的全息记录介质进行数据记录的记录技术,以及用于如所描述的在记录阶段通过适当地读出信息的再现记录的数据的再生技术 以上提出了建议。 具有与其对应的记录数据,并具有提供给它施加到全息图记录介质的特定相位调制图案的参考光束提供的相位调制模式的信号光束。 因此,记录的数据可以被记录在与上阶段的信息雅舞全息记录介质。 此外,在再现时,参考光束和具有整个相位的相位差相对于所述参考光束内的参考相位的DC束是/ 2被施加到全息图记录介质。 如上所述,通过提供基于A / 2的相位差,从雅舞蹈全息图记录介质上与所述参考光束的应用和DC光束的相位而得到的再现光束的相位可以被设置为是相同的。 因此,DC束可以被添加为“1”的再现光束的振幅的一个组件。 通过读取到其中如上所述添加了DC光束重放光束,记录在相信息可以被正确地读出,并且记录的数据可以与相位信息雅舞蹈被再现。

    METHOD FOR REPRODUCING SIGNAL IN OPTICALLY RECORDING MEDIUM
    4.
    发明公开
    METHOD FOR REPRODUCING SIGNAL IN OPTICALLY RECORDING MEDIUM 失效
    VERFAHREN ZUR WIEDERGABE EINES SIGNALS AUS EINEM OPTISCHEN AUFZEICHNUNGSMEDIUM。

    公开(公告)号:EP0536404A1

    公开(公告)日:1993-04-14

    申请号:EP91917831.9

    申请日:1991-10-19

    申请人: SONY CORPORATION

    IPC分类号: G11B11/10

    摘要: A method for reproducing signals in an optically recording medium of the type in which recording pits are erased or embossed by the temperature rise of the medium caused through projecting a light beam for reading out signals, or of the type in which the reflection factors of recording pits are changed by the temperature rise of the medium caused through projecting a light beam. The change of the substantial size of a reproducing region because of the change of the linear velocity of the medium is prevented. For this prevention, for example, a sensing means (17) for sensing the position of the reproducing region in a radial direction of the magneto-optical disc (11) during the rotation of the disc (11) at a constant speed is provided. By controlling the laser power and the external magnetic field according to the output of the sensing means (17), the substantial size of the reproducing region is so controlled as to be constant always independently of the linear velocity in each reproducing position.

    摘要翻译: 一种在光记录介质中再现信号的方法,其中记录凹坑由于通过投射用于读出信号的光束引起的介质的温度升高而被擦除或压印,或者其中记录的反射因子的类型 凹坑由于通过投射光束而引起的介质的温度升高而改变。 由于介质的线速度的变化,防止再现区域的实际尺寸的变化。 为了防止这种情况,例如,提供了用于在盘(11)以恒定速度旋转期间感测磁光盘(11)的径向方向上的再现区域的位置的感测装置(17)。 通过根据感测装置(17)的输出来控制激光功率和外部磁场,重放区域的实际尺寸被控制为在每个再现位置中始终独立于线速度而恒定。

    INFORMATION RECORDING METHOD AND APPARATUS
    6.
    发明公开
    INFORMATION RECORDING METHOD AND APPARATUS 失效
    方法和设备,用于记录信息。

    公开(公告)号:EP0617830A1

    公开(公告)日:1994-10-05

    申请号:EP93922651.0

    申请日:1993-10-18

    申请人: SONY CORPORATION

    IPC分类号: G02F1 G03B31 G06K1 G11B7

    摘要: L'invention concerne un procédé et un appareil pour l'enregistrement d'informations. Selon ledit procédé, un faisceau laser de faible cohérence et de haute puissance émis par un laser à semi-conducteur (21), présentant une grande surface de rayonnement, vient éclairer la piste son (25b) d'un film cinématographique (25) après avoir subi la modulation effectuée par un modulateur de lumière (23) en fonction de l'effet électro-optique. Le modulateur de lumière (23) se trouve à une profondeur de foyer du faisceau laser qui a son point focal situé entre le modulateur de lumière (23) et une lentille de formation d'image (24). Grâce à l'emploi du faisceau laser, le temps nécessaire pour enregistrer les données vocales peut être raccourci, tandis que le bruit speckle peut être évité et la formation de l'image améliorée par le réglage du point focal du faisceau laser décrit ci-dessus. En outre, étant donné que le faisceau laser est une lumière de faible cohérence, il n'est pas nécessaire d'avoir une plaque de polarisation, ce qui permet de réduire le nombre de composants, donc de simplifier la construction d'un tel appareil et d'abaisser ses coûts de production.

    METHOD FOR REPRODUCING SIGNAL IN OPTICALLY RECORDING MEDIUM
    7.
    发明公开
    METHOD FOR REPRODUCING SIGNAL IN OPTICALLY RECORDING MEDIUM 失效
    Verfahren zur Wiedergabe eines信号aus einem optischen Aufzeichnungsmedium。

    公开(公告)号:EP0526641A1

    公开(公告)日:1993-02-10

    申请号:EP91917827.7

    申请日:1991-10-19

    申请人: SONY CORPORATION

    IPC分类号: G11B11/10 G11B7/00

    摘要: A method for reproducing signals in an optically recording medium of the type in which recording pits are erased or embossed by the temperature rise of the medium caused through projecting a light beam for reading out signals, or of the type in which the reflection factors of recording pits are changed by the temperature rise of the medium caused through projecting a light beam. The variation of the substantial size of the reproducing region because of the change of the temperature of the medium is prevented. For this prevention, for example, a temperature sensor (20) for sensing the temperature of a magnetooptical disc (11) is provided. By controlling the laser power and the external magnetic field according to the temperature sensed by this temperature sensor (20), the substantial size of the reproducing region is kept constant always.

    摘要翻译: 一种在光记录介质中再现信号的方法,其中记录凹坑由于通过投射用于读出信号的光束引起的介质的温度升高而被擦除或压印,或者其中记录的反射因子的类型 凹坑由于通过投射光束而引起的介质的温度升高而改变。 由于介质的温度变化,防止了再现区域的实际尺寸的变化。 为了防止这种情况,例如,提供了用于感测磁光盘(11)的温度的温度传感器(20)。 通过根据由该温度传感器(20)感测的温度控制激光功率和外部磁场,再现区域的实际尺寸始终保持不变。

    POLARIZATION SPLITTING MULTIPLEXING DEVICE, OPTICAL SYSTEM, AND DISPLAY UNIT
    8.
    发明公开
    POLARIZATION SPLITTING MULTIPLEXING DEVICE, OPTICAL SYSTEM, AND DISPLAY UNIT 审中-公开
    POLARISATIONSTEILENDE MULTIPLEXVORRICHTUNG,OPTISCHES SYSTEM UND ANZEIGEINEHEIT

    公开(公告)号:EP2915000A1

    公开(公告)日:2015-09-09

    申请号:EP13798408.4

    申请日:2013-10-25

    申请人: Sony Corporation

    IPC分类号: G02B27/28 G02B27/48 G03B21/14

    摘要: An optical system is provided including a light source configured to emit a light; and a polarizing splitting multiplexing device including a first prism configured to split the light into two polarized light beams having different optical path lengths, and a second prism configured to combine the two polarized light beams. The first prism includes a first reflective surface and a first polarization splitting surface facing the first reflective surface, and the second prism includes a second reflective surface and a second polarization splitting surface facing the second reflective surface.

    摘要翻译: 提供了一种光学系统,包括配置成发光的光源; 以及偏振分束多路复用装置,其包括被配置为将光分成具有不同光程长度的两个偏振光束的第一棱镜和被配置为组合两个偏振光束的第二棱镜。 第一棱镜包括面向第一反射表面的第一反射表面和第一偏振分束表面,并且第二棱镜包括面向第二反射表面的第二反射表面和第二偏振分束表面。

    OPTICAL PICKUP APPARATUS AND OPTICAL REPRODUCING APPARATUS
    10.
    发明授权
    OPTICAL PICKUP APPARATUS AND OPTICAL REPRODUCING APPARATUS 失效
    光学扫描和光学再现设备

    公开(公告)号:EP0453576B1

    公开(公告)日:1996-04-17

    申请号:EP90916799.1

    申请日:1990-11-15

    申请人: SONY CORPORATION

    IPC分类号: G11B11/10 G11B7/12

    摘要: An optical pickup device for reading data signals recorded in an optical recording medium such as a magnetooptical disk. A light beam emitted from a source of light is split by a light-splitting element into two light beams which are linearly polarized to meet at right angles with each other and which propagate in different directions. Then, a converter element changes the phase between the oscillation components of each light beam with respect to two orthogonal axes in a plane perpendicular to the beam path. This enables two differently polarized beams to overlap on the recording medium. Thus, the effective area of irradiation is made smaller than the actual beam spot size to provide high resolution.