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    • 2. 发明授权
    • Image forming apparatus, method of gamma correction and storage medium storing gamma correction program
    • 图像形成装置,伽马校正方法和存储伽马校正程序的存储介质
    • US08014689B2
    • 2011-09-06
    • US12121237
    • 2008-05-15
    • Akira Nishizawa
    • Akira Nishizawa
    • G03G15/00
    • G03G15/5062G03G15/5041G03G2215/00029
    • An image forming apparatus is configured to control the density of an output image based on an inherent gamma characteristic of the apparatus. The apparatus includes a patch image forming unit that forms patch images having multiple gradation values, a measuring unit that measures the density or lightness of each patch image, a sample point arrangement unit that arranges sample points representative of measured density or lightness values in a descending or ascending order of the gradation values, an inflection point region detecting unit that detects any specific inflection point region, a straight line region detecting unit that detects any specific straight line region, an interpolating unit that interpolates by adding and/or deleting a specific sample point depending upon whether (i) an inflection point region is detected, (ii) a straight line region is detected, or (iii) neither an inflection point region nor a straight line region is detected.
    • 图像形成装置被配置为基于装置的固有伽马特性来控制输出图像的浓度。 该装置包括形成具有多个灰度值的贴片图像的贴片图像形成单元,测量每个贴片图像的浓度或亮度的测量单元,将代表测量的密度或亮度值的样本点排列在降序中的采样点排列单元 或渐变值的升序,检测任何特定拐点区域的拐点区域检测单元,检测任何特定直线区域的直线区域检测单元,通过添加和/或删除特定样品进行内插的内插单元 取决于是否检测到(i)拐点区域,(ii)检测到直线区域,或(iii)也没有检测到拐点区域和直线区域。
    • 9. 发明授权
    • Information signal recording medium electrostatic capacitance type
    • 信息信号记录介质静电电容型
    • US4827466A
    • 1989-05-02
    • US898778
    • 1986-08-19
    • Akira Nishizawa
    • Akira Nishizawa
    • G11B9/06G11B11/08
    • G11B9/06
    • A recording medium of electrostatic capacitance type is recorded with an information signal thereon as variation of geometrical shape of the recording surface part of the recording medium. The signal is reproduced from the recording medium by the variation, in response to the variation of geometrical shape, of the electrostatic capacitance between an electrode of a reproducing stylus tracing relatively the recording surface of the medium and the surface part. At least the surface part of the recording medium having the geometric shape variation is formed by a synthetic resin into which an electroconductive material has been admixed. The synthetic resin forms an outer surface cover of the surface part of the medium thereby to prevent exposure of the electroconductive material to the outside.
    • 作为记录介质的记录表面部分的几何形状的变化,以其信息信号记录静电电容型的记录介质。 响应于几何形状的变化,通过相对于介质的记录表面跟踪的再现触针的电极与表面部分之间的静电电容的变化,从记录介质再现信号。 至少具有几何形状变化的记录介质的表面部分由已经混合了导电材料的合成树脂形成。 合成树脂形成介质的表面部分的外表面覆盖物,从而防止导电材料暴露于外部。
    • 10. 发明申请
    • INFORMATION RECORDING MEDIUM HAVING SUBSTRATE WITH MICROSCOPIC PATTERN AND REPRODUCING APPARATUS THEREFOR
    • 具有显微图案的基板的信息记录介质及其再现装置
    • US20080159110A1
    • 2008-07-03
    • US12034220
    • 2008-02-20
    • Tetsuya KondoAkira Nishizawa
    • Tetsuya KondoAkira Nishizawa
    • G11B7/24G11B7/00
    • G11B27/24G11B7/007G11B7/24079G11B7/24082G11B7/26G11B7/261G11B7/263G11B11/10578G11B11/10584G11B2220/218G11B2220/2562
    • A recording medium includes a substrate having a microscopic pattern, which includes a shape of continuous substance of approximately parallel grooves formed with a convex shaped section and a concave shaped section alternating on a surface of the substrate. A recording layer is formed on the microscopic pattern and a light transmitting layer has a thickness of 0.05 mm to 0.12 mm formed on the recording layer. The microscopic pattern satisfies a relation of P≦λ/NA, wherein P is a pitch of the convex shaped section, λ is a wavelength of a reproducing light beam and NA is a numerical aperture of an objective lens. The microscopic pattern also includes modulated address information formed on both side walls of the convex shaped section viewed from the light transmitting layer as a wobble, both the side walls being parallel to each other, and furthermore wherein the address information is modulated by the phase-shift keying modulation system. A reproducing apparatus is particularly suited for the recording medium.
    • 记录介质包括具有微观图案的基板,其包括形成有凸形截面的大致平行凹槽的形状和在基板的表面上交替的凹形部分的形状。 在微观图案上形成记录层,在记录层上形成厚度为0.05mm〜0.12mm的透光层。 微观图案满足P <=λ/ NA的关系,其中P是凸形部分的间距,λ是再现光束的波长,NA是物镜的数值孔径。 微观图案还包括形成在从光透射层观察的凸形部分的两个侧壁上的调制地址信息作为摆动,两个侧壁彼此平行,此外,地址信息被相位调制, 移位键控调制系统。 再现装置特别适用于记录介质。