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    • 37. 发明申请
    • Multi-level cell memory device and method thereof
    • 多级单元存储装置及其方法
    • US20080137414A1
    • 2008-06-12
    • US11808173
    • 2007-06-07
    • Sung Chung ParkJun Jin KongYoung Hwan LeeDong Ku Kang
    • Sung Chung ParkJun Jin KongYoung Hwan LeeDong Ku Kang
    • G11C7/10
    • G11C11/5621G11C7/1006G11C29/00
    • A Multi-Level Cell (MLC) memory device and method thereof are provided. The example MLC memory device may be configured to perform data operations, and may include an MLC memory cell, a first coding device performing a first coding function, the first coding function being one of an encoding function and a decoding function, a second coding device performing a second coding function, the second coding function being one of an encoding function and a decoding function and a signal module configured to perform at least one of instructing the MLC memory cell to store data output by the second coding device if the first and second coding functions are encoding functions, and generating a demapped bit stream based on data retrieved from the MLC memory cell if the first and second coding functions are decoding functions.
    • 提供了一种多级单元(MLC)存储器件及其方法。 示例MLC存储器件可以被配置为执行数据操作,并且可以包括MLC存储器单元,执行第一编码功能的第一编码装置,作为编码功能和解码功能之一的第一编码功能,第二编码装置 执行第二编码功能,所述第二编码功能是编码功能和解码功能之一;以及信号模块,被配置为执行指令所述MLC存储器单元存储由所述第二编码装置输出的数据中的至少一个,如果所述第一和第二编码功能 编码功能是编码功能,并且如果第一和第二编码功能是解码功能,则基于从MLC存储器单元检索的数据来生成解映射比特流。
    • 39. 发明授权
    • Viterbi detector for optical disk system
    • 维特比检测器用于光盘系统
    • US06799296B2
    • 2004-09-28
    • US09985122
    • 2001-11-01
    • Jun-jin KongSung-han ChoiJae-wook Lee
    • Jun-jin KongSung-han ChoiJae-wook Lee
    • H03M1300
    • H03M13/6343G11B20/10009H03M13/3961H03M13/41H03M13/4107
    • A high speed Viterbi detector for an optical disk system, includes a frequency dividing unit for generating an auxiliary clock at one-third of the main clock frequency, a branch metric calculation unit for calculating each of a plurality of branch metrics, a serial-to-parallel converting unit for outputting each of the branch metrics at the main clock frequency in units of 3 state bits, an addition/comparison/selection unit for adding the branch metrics and previously stored state metrics and for comparing the addition results to select and output the minimum of the addition results as a new state metric, and for outputting a corresponding path selection signal, at the auxiliary clock frequency, a path memory for storing the path selection signal and for outputting parallel data corresponding to the path selection signal, at the auxiliary clock frequency, and a parallel-to-serial converting unit for converting the path memory output into serial data.
    • 一种用于光盘系统的高速维特比检测器,包括用于产生主时钟频率三分之一的辅助时钟的分频单元,用于计算多个分支度量中的每一个的分支量度计算单元, 平行转换单元,用于以3个状态位为单位输出主时钟频率的每个分支度量,用于添加分支度量和先前存储的状态度量的加法/比较/选择单元,并用于比较加法结果以选择和输出 将附加结果的最小值作为新的状态度量,并且在辅助时钟频率处输出用于存储路径选择信号并用于输出与路径选择信号相对应的并行数据的路径存储器的相应路径选择信号, 辅助时钟频率以及用于将路径存储器输出转换为串行数据的并行到串行转换单元。
    • 40. 发明授权
    • Quality calculator apparatus for use with Viterbi-decoded data using
zero-state metrics
    • 使用零状态度量的维特比解码数据使用的质量计算器装置
    • US6029268A
    • 2000-02-22
    • US839
    • 1997-12-30
    • Jun-jin KongSung-han Choi
    • Jun-jin KongSung-han Choi
    • H04L29/14H03M13/23H03M13/35H03M13/41G06F11/10
    • H03M13/6569H03M13/35H03M13/4107H03M13/413
    • A quality calculator apparatus for Viterbi-decoded data using zero-state metrics. The quality calculator for the Viterbi-decoded data includes: a Viterbi decoder which outputs zero-state metrics of input demodulated data according to the four possible transmission rates of FULL, HALF, QUARTER and 1/8; a register which stores respective zero-state metrics output from the Viterbi decoder; and a quality evaluation unit which reads the zero-state metrics stored in the register to evaluate the Viterbi-decoded data based on the zero-state metrics and which determines the actual transmission rate to be the one among the possible transmission rates which has the least zero-state metrics. The zero-state metrics of the demodulated data input to the Viterbi decoder are used as a quality evaluation parameter so that the quality evaluation can be correctly achieved to avoid errors in determining of the transmission rate, as compared to a quality calculator using a bit error ratio as the quality evaluation parameter.
    • 一种使用零状态度量的维特比解码数据的质量计算器装置。 用于维特比解码数据的质量计算器包括:维特比解码器,其根据FULL,HALF,QUARTER和+ E,fra 1/8 + EE的四种可能的传输速率输出输入解调数据的零状态度量; 存储从维特比解码器输出的相应的零状态度量的寄存器; 以及质量评估单元,其读取存储在所述寄存器中的零状态度量,以基于所述零状态量度来评估所述维特比解码数据,并且将所述实际传输速率确定为所述可能传输速率中的最小传输速率 零状态指标。 将输入到维特比解码器的解调数据的零状态量度用作质量评估参数,以便与使用位错误的质量计算器相比,可以正确地实现质量评估以避免确定传输速率的错误 比例作为质量评估参数。