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    • 76. 发明授权
    • Focus control apparatus in multi-layered disk reading apparatus
utilizing acceleration, deceleration and focus error signals to switch
between layers of the disk
    • 多层盘读取装置中的聚焦控制装置,利用加速度,减速度和聚焦误差信号在盘的层之间切换
    • US5999503A
    • 1999-12-07
    • US698797
    • 1996-08-16
    • Kiyoshi TateishiMasakazu Ogasawara
    • Kiyoshi TateishiMasakazu Ogasawara
    • G11B7/00G11B7/085G11B7/095
    • G11B7/08511G11B2007/0013
    • Focus control apparatus in a reading apparatus for reading a multi-layered disk having information recorded on a plurality of recording surfaces thereof. The focus control apparatus includes a signal generating system for generating an acceleration signal for forcing the objective lens to move in the optical axis direction of the light beam and a deceleration signal for braking the objective lens which has been forced to move. The apparatus further includes control circuit for supplying a lens driving system with the acceleration signal and the deceleration signal as the driving signal in response to a switching instruction for switching a recording surface from which information is to be read, and for supplying the driving system with the focus error signal as the driving signal after the generation of the deceleration signal, to focus the light beam on a target recording surface. The deceleration signal has a parameter which is a function of distance between the recording surface which has been read before the switching instruction is issued and the target recording surface. Preferably, either of the acceleration signal and the deceleration signal is a signal which is compensated for the influence of gravity acting on the objective lens.
    • 用于读取具有记录在其多个记录表面上的信息的多层盘的读取装置中的聚焦控制装置。 该聚焦控制装置包括:信号发生系统,用于产生用于迫使物镜在光束的光轴方向上移动的加速度信号;以及用于制动被迫移动的物镜的减速信号。 该装置还包括控制电路,用于响应于用于切换要从其读取信息的记录表面的切换指令,向镜头驱动系统提供加速度信号和减速信号作为驱动信号,并且用于向驱动系统提供 聚焦误差信号作为减速信号生成后的驱动信号,将光束聚焦在目标记录面上。 减速信号具有作为在切换指令被读出的记录面与目标记录面之间的距离的函数的参数。 优选地,加速度信号和减速信号中的任一个是补偿作用在物镜上的重力的影响的信号。
    • 77. 发明授权
    • Aberration correction device, aberration correction method and optical pickup
    • 畸变校正装置,像差校正方法和光学拾取器
    • US08018814B2
    • 2011-09-13
    • US11587935
    • 2005-04-14
    • Masakazu OgasawaraShinichi Fujinoki
    • Masakazu OgasawaraShinichi Fujinoki
    • G11B7/135G11B7/00
    • G02F1/061G02F1/134309G02F2203/18G11B7/0948G11B7/0956G11B7/1369G11B7/13927
    • The present invention is to provide an improved aberration correction device formed by inserting an electro-optic panel such as a liquid crystal panel in an image-formation optical system to correct aberrations in the image-formation optical system, characterized in that such a correction device is capable of correcting three or more kinds of aberrations using only one electro-optic panel.Divided areas concerning coma aberration correction and divided areas concerning astigmatism correction are formed in one of the transparent electrodes of the electro-optic panel, while the rest of divided areas concerning coma aberration correction and divided areas concerning spherical aberration correction are formed in the other of the transparent electrodes. In this way, it is possible to form divided areas divided into electrode patterns suitable for correcting various aberrations, simplify as much as possible the electrode structure of the transparent electrodes consisting of the divided areas, thereby simplifying a control of voltages to be applied to the divided areas.
    • 本发明提供一种改进的像差校正装置,其通过将图像形成光学系统中的诸如液晶面板的电光面板插入以校正图像形成光学系统中的像差而形成,其特征在于,这种校正装置 能够仅使用一个电光面板来校正三种或更多种像差。 在电光面板的一个透明电极中形成有关于彗形像差校正的分割区域和散光校正的分割区域,而关于彗差校正的其余分割区域和关于球面像差校正的分割区域形成在另一个 透明电极。 以这种方式,可以形成分为适合于校正各种像差的电极图案的划分区域,尽可能地简化由分割区域构成的透明电极的电极结构,从而简化对施加到该区域的电压的控制 分区。
    • 78. 发明授权
    • Display apparatus, display method, program and recording medium
    • 显示装置,显示方法,程序和记录介质
    • US07847805B2
    • 2010-12-07
    • US10577373
    • 2004-10-29
    • Masakazu OgasawaraAkira UedaHiroshi Miyai
    • Masakazu OgasawaraAkira UedaHiroshi Miyai
    • G09G5/02
    • G09G3/2003G09G3/2051G09G3/3607G09G5/02G09G2300/0452G09G2320/0242G09G2340/06H04N9/3114
    • A display apparatus, which makes one pixel displayable in four colors, that is, three primary colors and a white color, and inputs and displays chrominance signals corresponding to a mixing ratio of the four colors, includes a color correction instrument which performs first color correction of increasing the saturation of chrominance signals, and a second color correction of decreasing at least the saturation of the chrominance signals, when a predetermined color component exists in the chrominance signals corresponding to a pixel, selection instrument which switches temporally and selects either of first chrominance signals obtained by the first color correction, and second chrominance signals obtained by the second color correction, and a display instrument which displays the chrominance signals, which are selected, in the pixel.
    • 一种显示装置,其使得一个像素可以四种颜色显示,即三原色和白色,并且输入和显示与四种颜色的混合比相对应的色度信号,包括执行第一颜色校正的颜色校正装置 增加色度信号的饱和度,以及当在与像素相对应的色度信号中存在预定颜色分量时,至少降低色度信号的饱和度的第二颜色校正,其在时间上切换并选择第一色度 通过第一颜色校正获得的信号和通过第二颜色校正获得的第二色度信号,以及在像素中显示被选择的色度信号的显示装置。
    • 79. 发明申请
    • FABRICATION METHOD OF MULTILAYER OPTICAL RECORD MEDIUM AND RECORDING APPARATUS FOR MULTILAYERED OPTICAL RECORD MEDIUM
    • 多层光学记录介质的制造方法和多层光记录介质的记录装置
    • US20100046349A1
    • 2010-02-25
    • US12593036
    • 2007-03-29
    • Masaharu NakanoMasakazu OgasawaraMakoto Sato
    • Masaharu NakanoMasakazu OgasawaraMakoto Sato
    • G11B7/00G11B7/0045
    • G11B7/26G11B7/0045G11B7/00745G11B7/0908G11B7/24038
    • A fabrication method of a multilayer optical recording medium having a plurality of recording layers, comprises a step of preparing an optical recording medium having at least one record area; a write-position mark generating step of recording write-position marks in the record area beforehand; a step of preparing an optical system including a common objective lens to focus a data recording beam and a position mark recording beam on different positions in a thickness direction of the record area; a first data writing step of writing data between the write-position marks with following the write-position marks by the data recording beam; a position mark recording step of, in parallel with the first data writing step, recording new write-position marks in the record area by the position mark recording beam; and a second data writing step of writing data between the new write-position marks with following the new write-position marks by the data recording beam.
    • 一种具有多个记录层的多层光学记录介质的制造方法,包括制备具有至少一个记录区域的光学记录介质的步骤; 写入位置标记生成步骤,预先在记录区域中记录写入位置标记; 准备包括用于将数据记录光束和位置标记记录光束聚焦在记录区域的厚度方向上的不同位置上的公共物镜的光学系统的步骤; 第一数据写入步骤,在写入位置标记之间通过数据记录光束跟随写入位置标记来写入数据; 位置标记记录步骤,与第一数据写入步骤并行,通过位置标记记录光束在记录区域中记录新的写入位置标记; 以及第二数据写入步骤,用于通过数据记录光束在新的写入位置标记之间写入新的写入位置标记之间的数据。