Storage at M bits/cell density in N bits/cell analog memory cell devices, M>N
    31.
    发明授权
    Storage at M bits/cell density in N bits/cell analog memory cell devices, M>N 有权
    在N位/单元模拟存储单元器件中以M位/单元密度存储,M> N

    公开(公告)号:US08208304B2

    公开(公告)日:2012-06-26

    申请号:US12618732

    申请日:2009-11-15

    IPC分类号: G11C16/04

    摘要: A method for data storage includes accepting data for storage in a memory that includes multiple analog memory cells and supports a set of built-in programming commands. Each of the programming commands programs a respective page, selected from a group of N pages, in a subset of the memory cells. The subset of the memory cells is programmed to store M pages of the data, M>N, by performing a sequence of the programming commands drawn only from the set.

    摘要翻译: 一种用于数据存储的方法包括接收用于存储在包括多个模拟存储器单元的存储器中的数据,并且支持一组内置的编程命令。 每个编程命令在存储器单元的子集中编写从一组N页中选择的相应页面。 存储器单元的子集被编程为通过执行仅从集合中绘制的编程命令的序列来存储数据的M页M> N。

    Efficient readout schemes for analog memory cell devices using multiple read threshold sets
    32.
    发明授权
    Efficient readout schemes for analog memory cell devices using multiple read threshold sets 有权
    使用多个读取阈值集的模拟存储器单元器件的高效读出方案

    公开(公告)号:US08174857B1

    公开(公告)日:2012-05-08

    申请号:US12649360

    申请日:2009-12-30

    IPC分类号: G11C27/00

    CPC分类号: G11C11/5642

    摘要: A method for data readout includes storing two or more candidate sets of read thresholds for reading from a memory device that includes a plurality of analog memory cells. A group of the memory cells from which data is to be read is identified. An order is defined among the candidate sets of the read thresholds responsively to a criterion defined over the group of the memory cells. Data readout from the group of the memory cells is attempted by iterating over the candidate sets according to the order, until the data is read successfully.

    摘要翻译: 一种用于数据读出的方法包括从包括多个模拟存储器单元的存储器件存储用于读取的两个或更多个用于读取的候选读取阈值组。 识别要从中读取数据的一组存储单元。 响应于在存储器单元组上定义的标准,在读取阈值的候选组中定义顺序。 通过根据顺序迭代候选集来尝试来自存储器单元组的数据读取,直到数据被成功读取。

    Methods and arrangements to determine a reception of a signal
    33.
    发明授权
    Methods and arrangements to determine a reception of a signal 有权
    确定信号接收的方法和装置

    公开(公告)号:US07843872B2

    公开(公告)日:2010-11-30

    申请号:US11796956

    申请日:2007-04-30

    IPC分类号: H04W4/00

    摘要: Methods and arrangements for wireless communications are described. Embodiments include transformations, code, state machines or other logic to receive from a transmitter a signal representing a known sequence of symbols. The signal may be transmitted over a plurality of sub channels. The embodiments may also include determining channel responses at the sub channels and determining a reception of the known sequence. The determining may include treating the channel responses at the sub channels in a differential manner to cancel out channel phase responses and obtain channel amplitudes. In some embodiments, the cancelling may be performed by multiplying frequency domain values representing reception of a sub channel by the complex conjugate of frequency domain values of a neighboring sub channel. Many embodiments may also include calculating a carrier to interference and noise ratio (CINR) of the signal. In several embodiments, the signal may represent the preamble of a wireless frame.

    摘要翻译: 描述无线通信的方法和布置。 实施例包括转换,代码,状态机或用于从发射机接收表示已知符号序列的信号的其他逻辑。 信号可以在多个子信道上发送。 实施例还可以包括确定子信道处的信道响应并确定已知序列的接收。 确定可以包括以差分方式处理子信道处的信道响应以消除信道相位响应并获得信道幅度。 在一些实施例中,可以通过将表示子信道的接收的频域值乘以相邻子信道的频域值的复共轭来执行抵消。 许多实施例还可以包括计算信号的载波与干扰和噪声比(CINR)。 在几个实施例中,信号可以表示无线帧的前同步码。

    Methods and arrangements to determine a reception of a signal
    34.
    发明申请
    Methods and arrangements to determine a reception of a signal 有权
    确定信号接收的方法和装置

    公开(公告)号:US20080267059A1

    公开(公告)日:2008-10-30

    申请号:US11796956

    申请日:2007-04-30

    摘要: Methods and arrangements for wireless communications are described. Embodiments include transformations, code, state machines or other logic to receive from a transmitter a signal representing a known sequence of symbols. The signal may be transmitted over a plurality of sub channels. The embodiments may also include determining channel responses at the sub channels and determining a reception of the known sequence. The determining may include treating the channel responses at the sub channels in a differential manner to cancel out channel phase responses and obtain channel amplitudes. In some embodiments, the cancelling may be performed by multiplying frequency domain values representing reception of a sub channel by the complex conjugate of frequency domain values of a neighboring sub channel. Many embodiments may also include calculating a carrier to interference and noise ratio (CINR) of the signal. In several embodiments, the signal may represent the preamble of a wireless frame.

    摘要翻译: 描述无线通信的方法和布置。 实施例包括转换,代码,状态机或用于从发射机接收表示已知符号序列的信号的其他逻辑。 信号可以在多个子信道上发送。 实施例还可以包括确定子信道处的信道响应并确定已知序列的接收。 确定可以包括以差分方式处理子信道处的信道响应以消除信道相位响应并获得信道幅度。 在一些实施例中,可以通过将表示子信道的接收的频域值乘以相邻子信道的频域值的复共轭来执行抵消。 许多实施例还可以包括计算信号的载波与干扰和噪声比(CINR)。 在几个实施例中,信号可以表示无线帧的前同步码。

    EFFICIENT RE-READ OPERATIONS IN ANALOG MEMORY CELL ARRAYS

    公开(公告)号:US20120272122A1

    公开(公告)日:2012-10-25

    申请号:US13523421

    申请日:2012-06-14

    IPC分类号: H03M13/05 G06F11/10

    摘要: A method for data storage includes storing data, which is encoded with an Error Correction Code (ECC), in a group of analog memory cells by writing respective first storage values to the memory cells in the group. After storing the data, respective second storage values are read from the memory cells in the group, and the read second storage values are processed so as to decode the ECC. Responsively to a failure in decoding the ECC, one or more of the second storage values that potentially caused the failure are identified as suspect storage values. Respective third storage values are re-read from a subset of the memory cells that includes the memory cells holding the suspect storage values. The ECC is re-decoded using the third storage values so as to reconstruct the stored data.

    Database of memory read thresholds
    37.
    发明授权
    Database of memory read thresholds 有权
    内存读取阈值数据库

    公开(公告)号:US08259506B1

    公开(公告)日:2012-09-04

    申请号:US12728296

    申请日:2010-03-22

    IPC分类号: G11C16/04

    摘要: A method for data storage includes storing multiple sets each including one or more read thresholds for use in reading data from a plurality of analog memory cells. The memory cells are arranged in multiple erasure blocks each including multiple pages, and each set of read thresholds is associated with a respective page in one of the erasure blocks. A first page, which belongs to a given erasure block and is not associated with any of the stored sets of read thresholds, is read by retrieving a stored set of read thresholds that is associated with a second page in the given erasure block, adapting the retrieved set of read thresholds to match the first page, and reading the first page using the adapted set of read thresholds.

    摘要翻译: 一种用于数据存储的方法包括存储多个集合,每个集合包括一个或多个读取阈值,用于从多个模拟存储器单元读取数据。 存储器单元被布置在多个擦除块中,每个擦除块包括多个页面,并且每组读取阈值与擦除块之一中的相应页面相关联。 通过检索与给定擦除块中的第二页相关联的存储的一组读取阈值来读取属于给定擦除块并且不与所存储的读取阈值集合相关联的第一页面, 检索到的一组读取阈值以匹配第一页,并且使用适应的读取阈值集读取第一页。

    Method and apparatus for frame control header decoding using cyclic shifting of bits
    38.
    发明授权
    Method and apparatus for frame control header decoding using cyclic shifting of bits 失效
    用于使用位的循环移位的帧控制头解码的方法和装置

    公开(公告)号:US08132085B2

    公开(公告)日:2012-03-06

    申请号:US11858471

    申请日:2007-09-20

    IPC分类号: H03M13/03

    CPC分类号: H04L69/22

    摘要: A method and apparatus for decoding a frame control header message in a wireless communication transmission are disclosed. The method comprises assuming at least some of the bits comprising the frame control header message are constant across multiple frames or are known a priori and generating metrics at least from the bits of the frame control header message that are assumed to be constant or are known a priori. The method further comprises decoding the metrics, for example, with a Viterbi decoder or using chase combining, to yield the decode frame control header message.

    摘要翻译: 公开了一种在无线通信传输中对帧控制报头消息进行解码的方法和装置。 该方法包括假设包括帧控制报头消息的至少一些比特在多个帧中是恒定的,或者是先验已知的,并且至少从帧控制报头消息的比特中产生度量,该比特被假定为恒定的或已知的 先验的 该方法还包括例如使用维特比解码器或使用追踪合并来解码度量,以产生解码帧控制报头消息。

    Programming analog memory cells for reduced variance after retention
    39.
    发明授权
    Programming analog memory cells for reduced variance after retention 有权
    编程模拟存储单元,保留后减少方差

    公开(公告)号:US07864573B2

    公开(公告)日:2011-01-04

    申请号:US12390522

    申请日:2009-02-23

    IPC分类号: G11C11/34 G11C16/04 G11C16/06

    摘要: A method includes defining a nominal level of a physical quantity to be stored in analog memory cells for representing a given data value. The given data value is written to the cells in first and second groups of the cells, which have respective first and second programming responsiveness such that the second responsiveness is different from the first responsiveness, by applying to the cells in the first and second groups respective, different first and second patterns of programming pulses that are selected so as to cause the cells in the first and second groups to store respective levels of the physical quantity that fall respectively in first and second ranges, such that the first range is higher than and the second range is lower than the nominal level. The given data value is read from the cells at a later time.

    摘要翻译: 一种方法包括定义要存储在模拟存储器单元中以表示给定数据值的物理量的标称电平。 将给定数据值写入第一和第二组单元中的单元,其具有相应的第一和第二编程响应性,使得第二响应性与第一响应性不同,通过向第一组和第二组中的单元施加相应的 选择的不同的第一和第二编程脉冲模式,以使得第一和第二组中的单元分别存储分别落在第一和第二范围内的物理量的相应水平,使得第一范围高于和/ 第二范围低于标称水平。 稍后从单元读取给定的数据值。

    OFDM signal acquisition
    40.
    发明授权
    OFDM signal acquisition 有权
    OFDM信号采集

    公开(公告)号:US07826544B2

    公开(公告)日:2010-11-02

    申请号:US11824600

    申请日:2007-06-29

    IPC分类号: H04K1/10

    摘要: In general, in one aspect, the disclosure describes a method defining order and means in which physical parameters of a received OFDM signal may be detected. A fractional frequency offset is determined for the OFDM signal and is used to determine a coarse location for received signal preamble. A symbol boundary is determined based on the coarse location and the course location is used to determine preamble location. A preamble sequence and integer frequency offset is determined based on the preamble location.

    摘要翻译: 通常,在一个方面,本公开描述了定义可以检测接收的OFDM信号的物理参数的顺序和装置的方法。 确定OFDM信号的分数频偏,并用于确定接收信号前同步码的粗略位置。 基于粗略位置确定符号边界,并且使用路线位置来确定前导码位置。 基于前导码位置确定前导码序列和整数频率偏移。