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    • 4. 发明授权
    • Defect detector for holographic storage systems
    • 全息存储系统缺陷探测器
    • US08819500B1
    • 2014-08-26
    • US14047491
    • 2013-10-07
    • Marvell International Ltd.
    • Shaohua YangZining Wu
    • G06F11/00G06F11/07
    • G06F11/0751G11B20/1816G11B2020/1823G11B2220/2504G11B2220/2516G11B2220/2562
    • A system including a reconstruction module and a correlation module. The reconstruction module is configured to reconstruct data bits detected from first signals, and to generate second signals based on the reconstruction of the data bits detected from the first signals. The correlation module is configured to generate first correlation values by correlating (i) the first signals and (ii) the second signals, and to generate second correlation values by self-correlating the second signals. In response to one or more of (i) the first signals and (ii) the second signals including a floating number having (i) a plurality of bits and (ii) a sign bit, the correlation module is configured to generate one or more of (i) the first correlation values and (ii) the second correlation values based on (i) a plurality of most significant bits of the floating number and (ii) the sign bit of the floating number.
    • 一种包括重建模块和相关模块的系统。 重建模块被配置为重建从第一信号检测到的数据位,并且基于从第一信号检测到的数据位的重建来生成第二信号。 相关模块被配置为通过将(i)第一信号和(ii)第二信号相关联来产生第一相关值,并且通过对第二信号进行自相关来产生第二相关值。 响应于(i)第一信号和(ii)第二信号中的一个或多个,包括具有(i)多个位和(ii)符号位的浮动数字的第二信号,相关模块被配置为产生一个或多个 (i)第一相关值和(ii)基于(i)浮动数的多个最高有效位和(ii)浮动数的符号位的第二相关值。
    • 6. 发明申请
    • APPARATUS AND METHOD FOR PROCESSING OPTICAL INFORMATION USING LOW
DENSITY PARITY CHECK CODE
    • 使用低密度奇偶校验代码处理光信息的装置和方法
    • US20130121125A1
    • 2013-05-16
    • US13665748
    • 2012-10-31
    • WI LAN Inc.
    • Bi-Woong Chung
    • G11B20/18
    • G11B20/1833G11B7/0065G11B2220/2504H03M13/1102
    • An apparatus and method for processing optical information using a low density parity check code are suggested. An optical information recording method includes the steps of encoding data to record into a low density parity check code; representing the data, which is encoded into the low density parity check code, to a spatial light modulator in the unit of a data page; and modulating a recording beam into the data page representing the spatial light modulator to be recorded in the form of hologram in a recording medium. By blocking inexact probability information from being concentrated in the LDPC code block, by achieving exact probability information through effective allocation of a mark, and by improving average accuracy of the pixel, which corresponds to the LDPC code, failure rate of decoding can be minimized so that decoding performance can be improved.
    • 提出了一种使用低密度奇偶校验码处理光信息的装置和方法。 光信息记录方法包括以下步骤:将数据编码成低密度奇偶校验码; 将编码为低密度奇偶校验码的数据表示为以数据页为单位的空间光调制器; 并将记录光束调制成表示在记录介质中以全息图形式记录的空间光调制器的数据页。 通过阻止不精确的概率信息集中在LDPC码块中,通过通过有效分配标记来获得准确的概率信息,并且通过提高对应于LDPC码的像素的平均精度,可以使解码的故障率最小化 可以提高解码性能。
    • 9. 发明授权
    • Hologram decoding apparatus, hologram decoding method and computer readable medium
    • 全息解码装置,全息图解码方法和计算机可读介质
    • US07982932B2
    • 2011-07-19
    • US12112054
    • 2008-04-30
    • Jiro Minabe
    • Jiro Minabe
    • G03H1/16
    • G11B7/0065G03H1/16G11B7/128G11B20/10G11B2220/2504
    • A hologram decoding apparatus includes: an imaging device that receives a reproduced image obtained by reading an encoded image from a hologram recording medium in which a Fourier transform image of the encoded image with n pixels representing digital information is recorded, n being an integer of 2 or more, and that outputs the reproduced image with k resolution pixel numbers, k being an integer more than n; a storing unit that stores decoding patterns and digital information corresponding to the decoding patterns, wherein a decoding pattern from among the decoding patterns corresponds to the reproduced image, which is encoded with m pixels of k≧m>n; and a decoding unit that refers to the decoding patterns to specify the decoding pattern; and that carries out a decoding process to set the digital information corresponding to the specified decoding pattern as digital information of the reproduced image.
    • 全息图解码装置包括:成像装置,其接收通过从全息图记录介质读取编码图像而获得的再现图像,在全息图记录介质中记录了表示数字信息的n个像素的编码图像的傅里叶变换图像,n为2的整数 以上,并以k分辨率像素数输出再生图像,k为大于n的整数; 存储单元,其存储与解码图案对应的解码图案和数字信息,其中来自解码图案的解码图案对应于由m≥m> n的m个像素编码的再现图像; 以及解码单元,其参考所述解码模式以指定所述解码模式; 并且执行解码处理以将与指定的解码模式相对应的数字信息设置为再现图像的数字信息。