Two transistor wordline decoder output driver
    42.
    发明授权
    Two transistor wordline decoder output driver 失效
    两个晶体管字线解码器输出驱动

    公开(公告)号:US07583559B2

    公开(公告)日:2009-09-01

    申请号:US11756419

    申请日:2007-05-31

    IPC分类号: G11C8/00

    CPC分类号: G11C8/10 G11C8/12

    摘要: A wordline decoder scheme for a memory device is generally described. In one example, a memory device includes a distributed logical NOR gate to decode addressing signals to generate wordline selection signals within a block of memory wherein the distributed logical NOR gate comprises a wordline decoder output driver, the wordline decoder output driver comprising two transistors coupled with a wordline signal.

    摘要翻译: 通常描述用于存储器件的字线解码器方案。 在一个示例中,存储器件包括分布式逻辑“或”门,用于解码寻址信号以在存储器块内产生字线选择信号,其中分布逻辑或非门包括字线解码器输出驱动器,字线解码器输出驱动器包括与 字线信号。

    System and method for multiple signal carrier time domain channel estimation
    43.
    发明授权
    System and method for multiple signal carrier time domain channel estimation 失效
    多载波时域信道估计的系统和方法

    公开(公告)号:US07580467B2

    公开(公告)日:2009-08-25

    申请号:US11402597

    申请日:2006-04-12

    申请人: Hemanth Sampath

    发明人: Hemanth Sampath

    IPC分类号: H04K1/10 H04L27/28

    摘要: The present invention provides a method of characterizing a frequency response of a transmission channel between a transceiver and a subscriber unit. The method includes once per predetermined interval of time, the transceiver transmitting a signal including multiple carriers, a plurality of the carriers including training symbols, a plurality of the carriers including information symbols. The subscriber unit generates frequency response estimates at the frequencies of the carriers including training symbols, each interval of time. The frequency response estimates are converted into a time domain response generating an impulse response once per interval of time. The impulse responses are filtered over a plurality of intervals of time. A channel profile is determined from the filtered impulse responses. The channel profile is converted to the frequency domain generating a channel interpolator. The characterized frequency response is generated from the channel interpolator and the frequency response estimates. The filtering can include averaging the impulse responses over a plurality of intervals of time, accumulating the impulse responses over a plurality of intervals of time, or weighted averaging of the impulse responses over a plurality of intervals of time. The weighted averaging can be dependent upon a phase error between the impulse responses, and/or an amplitude error between the impulse responses.

    摘要翻译: 本发明提供了一种表征收发机与用户单元之间的传输信道的频率响应的方法。 该方法包括每个预定时间间隔一次,收发信机发送包括多载波的信号,多个载波包括训练符号,多个载波包括信息符号。 用户单元在载波的频率上生成频率响应估计,包括训练符号,每个时间间隔。 频率响应估计被转换成时域响应,每个时间间隔产生一次脉冲响应。 在多个时间间隔内对脉冲响应进行滤波。 从滤波的脉冲响应确定信道分布。 信道简档被转换成产生通道内插器的频域。 特征频率响应是从通道内插器和频率响应估计产生的。 滤波可以包括在多个时间间隔内对脉冲响应进行平均,在多个时间间隔内累积脉冲响应,或者在多个时间间隔内脉冲响应的加权平均。 加权平均可以取决于脉冲响应之间的相位误差和/或脉冲响应之间的振幅误差。

    Compensated comparator for use in lower voltage, higher speed non-volatile memory
    44.
    发明授权
    Compensated comparator for use in lower voltage, higher speed non-volatile memory 失效
    补偿比较器用于低电压,高速度非易失性存储器

    公开(公告)号:US07498850B2

    公开(公告)日:2009-03-03

    申请号:US11767227

    申请日:2007-06-22

    IPC分类号: H03K5/22

    CPC分类号: H03K5/22

    摘要: Briefly, in accordance with one or more embodiments, an offset compensated comparator is capable of being utilized for higher speed, lower voltage use. The comparator comprises a cross-coupled latch comprising n type devices and p type devices. The threshold mismatch between n type devices is captured on capacitors coupled to the gates of the n type devices to capture the mismatch between the devices. After the threshold mismatch is captured, the comparator can be used as a typical cross coupled latch.

    摘要翻译: 简而言之,根据一个或多个实施例,偏移补偿比较器能够用于更高速度,更低电压的使用。 该比较器包括一个交叉耦合的锁存器,其包括n型装置和p型装置。 n型器件之间的阈值失配在与n型器件的栅极耦合的电容器上捕获,以捕获器件之间的失配。 在捕获阈值失配之后,比较器可以用作典型的交叉耦合锁存器。

    Multi-level cell serial-parallel sense scheme for non-volatile flash memory
    45.
    发明授权
    Multi-level cell serial-parallel sense scheme for non-volatile flash memory 有权
    用于非易失性闪存的多级单元串行并行检测方案

    公开(公告)号:US07463514B1

    公开(公告)日:2008-12-09

    申请号:US11766248

    申请日:2007-06-21

    申请人: Rezaul Haque

    发明人: Rezaul Haque

    IPC分类号: G11C11/34

    摘要: A method of sensing data in a multi-level cell memory using two or less sense operations and adjusting column load is provided. A sensing circuit implementing a serial-parallel sense scheme is also provided. The column loads are re-configurable based on the sensing circuit and the serial-parallel sense scheme.

    摘要翻译: 提供了使用两个或更少的感测操作和调整列负载来感测多电平单元存储器中的数据的方法。 还提供了实现串并行感测方案的感测电路。 基于感测电路和串行 - 并行感测方案,列负载可重新配置。

    Resistor-based Σ-ΔDAC
    47.
    发明授权
    Resistor-based Σ-ΔDAC 有权
    基于电阻和电阻的DAC

    公开(公告)号:US08941520B2

    公开(公告)日:2015-01-27

    申请号:US13995156

    申请日:2011-09-30

    摘要: An inverter-driven resistor-ladder digital-to-analog (DAC) converter includes a resistor-ladder network that comprises a resistor for each bit signal of a multi-bit input signal. Each resistor of the resistor-ladder network comprises an input end and an output end. The input end of each resistor is coupled to a corresponding bit signal of the multi-bit input signal, and the output end of each resistor is coupled to an output node of the resistor-ladder network. An output voltage is generated at the output node that is based on the multi-bit input signal. In one exemplary embodiment, the multi-bit input signal is a sigma-delta (ΣΔ) modulated multi-bit input signal. In another exemplary embodiment, resistance values of the resistors of the resistor-ladder network are related by a binary weighting. In still another exemplary embodiment, resistance values of the resistors of the resistor-ladder network are substantially equal.

    摘要翻译: 逆变器驱动的电阻梯形数模(DAC)转换器包括一个电阻梯形网络,包括一个多位输入信号的每个位信号的电阻。 电阻梯形网络的每个电阻器包括输入端和输出端。 每个电阻器的输入端耦合到多位输入信号的对应位信号,并且每个电阻器的输出端耦合到电阻梯形网络的输出节点。 在输出节点处产生基于多位输入信号的输出电压。 在一个示例性实施例中,多比特输入信号是Σ-Δ(&Sgr& Dgr)调制的多位输入信号。 在另一示例性实施例中,电阻梯形网络的电阻器的电阻值通过二进制加权相关。 在又一示例性实施例中,电阻梯形网络的电阻器的电阻值基本相等。

    Intelligent location tagging for deterministic device behavior
    48.
    发明授权
    Intelligent location tagging for deterministic device behavior 有权
    用于确定性设备行为的智能位置标记

    公开(公告)号:US08923891B2

    公开(公告)日:2014-12-30

    申请号:US13530451

    申请日:2012-06-22

    IPC分类号: H04W24/00 H04W4/00 H04W28/02

    摘要: Briefly, in accordance with one or more embodiments, a deterministic device behavior system detects if a device is entering a sensitive location. The sensitive location may be a movie theater, hospital, law enforcement agency, public restroom or locker room, meeting room, factory, or similar location. If the device enters the sensitive location, the device is triggered to query a location database to obtain one or more policies related to deterministic behavior. The policies are transmitted to the device to execute the deterministic behavior while the device is in the sensitive location. The deterministic behavior may include disabling one or more modules of the device such as the camera, microphone, speaker, annunciator, vibrator, and so on, where the use of such modules may be inappropriate or prohibited in the sensitive location. The policies may be implemented manually by the user or automatically by the device.

    摘要翻译: 简而言之,根据一个或多个实施例,确定性设备行为系统检测设备是否正在进入敏感位置。 敏感地点可能是电影院,医院,执法机构,公共厕所或更衣室,会议室,工厂或类似地点。 如果设备进入敏感位置,则触发设备查询位置数据库以获得与确定性行为相关的一个或多个策略。 在设备处于敏感位置时,将策略传输到设备以执行确定性行为。 确定性行为可能包括禁用设备的一个或多个模块,例如相机,麦克风,扬声器,信号器,振动器等,其中在敏感位置可能不适当或禁止使用这些模块。 策略可以由用户手动实现或由设备自动实现。

    System and method for protecting MAC control messages
    49.
    发明授权
    System and method for protecting MAC control messages 有权
    用于保护MAC控制消息的系统和方法

    公开(公告)号:US08856883B2

    公开(公告)日:2014-10-07

    申请号:US13094387

    申请日:2011-04-26

    摘要: A system to protect MAC control messages is presented. In one embodiment, the system comprises a processor, a memory coupled to the processor, and a communication device coupled to the processor to communicate wirelessly over multiple sub-channels in an orthogonal frequency division multiple access (OFDMA) wireless network. The communication device is operable to determine that a MAC control message is protected if an indicator within the MAC control message is set. The communication device validates, if the indicator is set, integrity of the MAC control message in conjunction with a CMAC (cipher-message authentication code) tuple concatenated with the MAC control message.

    摘要翻译: 提出了一种保护MAC控制消息的系统。 在一个实施例中,系统包括处理器,耦合到处理器的存储器和耦合到处理器的通信设备,以在正交频分多址(OFDMA)无线网络中的多个子信道上进行无线通信。 如果MAC控制消息中的指示符被设置,则通信设备可操作以确定MAC控制消息被保护。 通信装置如果指示符被设置,则与MAC控制消息连接的CMAC(密码消息认证码)元组一起确认MAC控制消息的完整性。

    Recursive reduction of channel state feedback
    50.
    发明授权
    Recursive reduction of channel state feedback 有权
    通道状态反馈递归减少

    公开(公告)号:US08743857B2

    公开(公告)日:2014-06-03

    申请号:US13532969

    申请日:2012-06-26

    IPC分类号: H04B7/216 H04B7/06 H04B7/04

    摘要: A method and a system that multiplies a beamforming matrix by a unitary matrix that does not change the subspace of the beamforming matrix for form a converted matrix having a lower left triangle of zeros. A first column vector having a fewest number of elements of the converted matrix is quantized using a codebook and represented by a first codebook index. A Householder matrix is determined from the quantized first column vector and the converted matrix is multiplied by the Householder matrix. Quantizing, determining a Householder matrix from further column vectors of the converted matrix using a codebook and representing each respective column vector by further corresponding codebook index, and multiplying the converted matrix on the left by the determined Householder matrix for each respective column vector are recursively repeated. The first codebook index and further codebook indices are transmitted to a remote station for use in beamforming.

    摘要翻译: 一种方法和系统,其将波束形成矩阵乘以不改变波束形成矩阵的子空间的单一矩阵,以形成具有零的左下三角形的转换矩阵。 具有转换矩阵的元素数目最少的第一列矢量使用码本量化,并由第一码本索引表示。 从量化的第一列向量确定一个Householder矩阵,并将该矩阵乘以Householder矩阵。 使用码本从转换矩阵的其他列向量中量化,确定房主矩阵,并通过进一步的相应码本索引表示每个相应的列向量,并且将每个相应列向量的左侧的转换矩阵乘以所确定的Householder矩阵递归地重复 。 第一码本索引和其他码本索引被发送到远程站以用于波束成形。