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    • 32. 发明公开
    • Coding apparatus and coding method
    • Kodiervorrichtung und Kodierverfahren
    • EP1148651A2
    • 2001-10-24
    • EP01302998.8
    • 2001-03-29
    • SONY CORPORATION
    • Hattori, MasayukiMurayama, JunMiyauchi, ToshiyukiYamatomo, KouheiYokokawa, Takashi
    • H03M13/29H03M13/23H03M13/45
    • H03M13/256H03M13/258H03M13/2972H03M13/3988
    • To carry out error correction coding and decoding according to a serially concatenated coded modulation system with a small circuit scale and high performance. A coding apparatus 1 is designed so that an interleaver 20 interleaves order of bits so that all weights are coded by a convolutional coder 30 with respect to data comprising a series of 3 bits supplied from a convolutional coder 10; the convolutional coder 30 makes as small as possible the total value of the hamming distance of input bit between passes to be the minimum Euclidean distance with respect to data of 3 bits supplied from the interleaver 20; and a multi-value modulation mapping circuit 40 causes the hamming distance of input bits in the convolutional coder 30 as the distance between signal point on the I/Q plane is smaller to subject data of 3 bits supplied from the convolutional coder 30 to mapping.
    • 根据串行级联的编码调制系统进行纠错编码和解码,具有小的电路规模和高性能。 编码装置1被设计成使得交织器20交织比特的顺序,使得所有权重相对于包括从卷积编码器10提供的一系列3比特的数据由卷积编码器30编码; 卷积编码器30相对于从交织器20提供的3比特的数据,尽可能地使输入比特的汉明距离的总值为最小欧几里德距离; 并且多值调制映射电路40使得卷积编码器30中的输入比特的汉明距离随着I / Q平面上的信号点之间的距离变小,从卷积编码器30提供的3比特数据映射。
    • 33. 发明公开
    • Viterbi decoding apparatus and viterbi decoding method
    • 维特比 - 德科迪亚诺
    • EP0924863A2
    • 1999-06-23
    • EP98124034.4
    • 1998-12-17
    • SONY CORPORATION
    • Hattori, MasayukiMiyauchi, Toshiyuki
    • H03M13/00
    • H03M13/6583H03M13/4107H03M13/4123H03M13/4161H03M13/4176
    • A register train is provided in addition to a train of memory cells as many as a cut length which are arranged in correspondence to each state. Outputs of selectors at respective stages in the register train corresponding to state 00 are inputted to a register 1021 in the register train and selectors. Outputs of the registers at the front stages are inputted to those three selectors, respectively. The three selectors switch outputs to the post stages in accordance with a control by a control circuit when a reception word is terminated and in the other cases. Thus, when the reception word is terminated, information stored in the register train is transferred as it is. By such an operation, a path which reaches state 00 can be decoded when a reception word is terminated.
    • 除了与每个状态相对应地布置有与切割长度一样多的存储器单元串之外,还提供了一个寄存器列。 对应于状态00的寄存器列中的各个级的选择器的输出被输入到寄存器列表和选择器中的寄存器1021。 前级寄存器的输出分别输入到这三个选择器。 当接收字终止时,根据控制电路的控制,在其他情况下,三个选择器将输出切换到后级。 因此,当接收字终止时,存储在寄存器列表中的信息被原样传送。 通过这样的操作,当接收字终止时,可以解码达到状态00的路径。
    • 39. 发明公开
    • Viterbi decoding
    • Leistungseffizienter维特比Dekoder
    • EP1739843A2
    • 2007-01-03
    • EP06253258.5
    • 2006-06-23
    • SONY CORPORATION
    • Miyauchi, ToshiyukiMizutani, Yuichi
    • H03M13/41
    • H03M13/4176H03M13/4169H03M13/6502
    • The present invention can reduce power consumption at the time of tracing. The present invention provides a viterbi decoding apparatus for decoding convolution codes, which includes a path memory unit that stores one of two paths toward respective transition states of a convolution code, as a selected path, for a plurality of continuous time points, a tracing unit that traces a selected path stored in the path memory unit in a reversed-time direction, thereby decoding a convolution code at respective time points, each of the time points being prior to a predetermined trace-skipping period, and a control unit that controls the path memory unit, wherein the path memory unit has a storage area designed to store selected paths assuming respective transition states at respective time points, the storage area is divided into sub-areas from the lowest order of transition state, each of the sub-areas corresponding to predetermined number of bits, and reading data can be stopped for each sub-area, and the control unit designates sub-areas from which no selected path needs to be read at respective time points so as to stop reading data from the designated sub-areas.
    • 本发明可以减少跟踪时的功耗。 本发明提供了一种用于对卷积码进行解码的维特比解码装置,该维特比解码装置包括一个路径存储单元,该路径存储单元存储朝向卷积码的各个转换状态的两个路径之一作为多个连续时间点的所选路径,跟踪单元 其沿着反向时间方向跟踪存储在路径存储器单元中的所选择的路径,从而在各个时间点对每个时间点进行解码,每个时间点在预定的跳闸周期之前,以及控制单元, 路径存储单元,其中,所述路径存储单元具有被设计为存储在各个时间点处各自的转变状态的所选择的路径的存储区域,所述存储区域被划分为从所述过渡状态的最低阶的子区域,每个所述子区域 对应于预定数量的比特,并且可以针对每个子区域停止读取数据,并且控制单元指定没有选择的路径n的子区域 在各个时间点读取数据,以停止从指定的子区域读取数据。
    • 40. 发明公开
    • Encoding method and memory apparatus
    • Kodierungsverfahren und Speicheranordnung
    • EP1496519A3
    • 2005-02-09
    • EP04023697.8
    • 1999-01-21
    • Sony Corporation
    • Miyauchi, ToshiyukiHattori, Masayuki
    • G11C29/00G11C11/56
    • G06F11/1008G06F11/1068G06F11/1072G11C7/1006G11C11/56G11C11/5621G11C16/04G11C29/00G11C29/42H03M13/15
    • This invention relates to a memory apparatus or the like adaptable to a multi-value recording flash memory and others. A flash memory 10 is designed for 16-value (4-bit) recording. For a write operation, the encoder (12) converts input data Din into an abbreviated Reed-Solomon code to provide write data WD. The converter (13) converts the write data WD into four-bit parallel data. The converted data are fed and written to the each memory cell constituting cell arrays (11) successively. For a read operation, the converter (14) converts read data RD from the cell arrays (11) into one-byte (8-bit) parallel data and supplies the converted data to the decoder (15) for error correction in units of bytes, whereby output data Dout is obtained. Since the Reed-Solomon code is used, sufficient performance with a limited number of errors to be corrected can be obtained.
    • 本发明涉及适用于多值记录闪存等的存储装置等。 闪存10被设计用于16值(4位)记录。 对于写入操作,编码器(12)将输入数据Din转换为缩写的Reed-Solomon码,以提供写入数据WD。 转换器(13)将写入数据WD转换为四位并行数据。 转换后的数据被依次送入构成单元阵列(11)的各存储单元。 对于读取操作,转换器(14)将来自单元阵列(11)的读取数据RD转换成一个字节(8位)的并行数据,并将转换的数据提供给解码器(15),用于以字节为单位进行纠错 ,从而获得输出数据Dout。 由于使用里德 - 所罗门码,所以可以获得具有有限数量的错误的足够的性能。