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    • 2. 发明授权
    • Decoding multi-block product code
    • 解码多块产品代码
    • US06898757B1
    • 2005-05-24
    • US10117388
    • 2002-04-04
    • Yan ZhongLin Yang
    • Yan ZhongLin Yang
    • H03M13/25H03M13/29H04L1/00H04L27/34H03M13/03
    • H04L1/0057H03M13/251H03M13/2909H04L1/0045H04L27/3488
    • A method for efficient decoding of block product code format signals, using a (22p)QAM signal constellation for mapping of a received signal, with p=2, 3, 4, 5, . . . A received signal value rx, corresponding to an x=I or x=Q coordinate, is converted to a p-tuple (B(p-1)x, . . . , B0x) corresponding to a “closest” I-coordinate or Q-coordinate numerical value, and a p-stage algorithm is applied to the signal values rx and to the p-tuples (B(p-1)x, . . . , B0x) to determine a p-tuple (r(p-1)x, . . . , r0x) representing a decoded p-bit value for the received signal value rx. Depending upon a communication channel parameter Eb/N0 and the bit error ratio BER associated with each of the p bits, the received signal values rx may be suitable for some or all communications activities (e.g., HDTV, SDTV, mobile comm).
    • 使用用于映射接收到的信号的(2≤Pp)QAM信号星座来对块产品码格式信号进行有效解码的方法,其中p = 2,3,4,5,...。 。 。 对应于x = I或x = Q坐标的接收信号值r x x x被转换成p元组(B(p-1)x)。 对应于“最接近”的I坐标或Q坐标数值的P阶算法,并且将p级算法应用于信号值r x1 / 以及p元组(B>(p-1)x,...,B×0x))来确定p元组(r∈(p-1) 1)表示用于接收信号值r x x的解码的p位值的x,...,r 。 根据通信信道参数Eb / N0和与每个p位相关联的比特误差BER,接收信号值r x x可适用于一些或所有通信活动(例如,HDTV, SDTV,手机通讯)。
    • 4. 发明授权
    • Trellis construction based on parity check matrix for BCH code
    • 基于BCH码奇偶校验矩阵的网格构建
    • US07266749B1
    • 2007-09-04
    • US10186128
    • 2002-06-27
    • Yan ZhongLin Yang
    • Yan ZhongLin Yang
    • H04L1/14
    • H03M13/152H03M13/3944H04L1/0058
    • A method for constructing a simplified trellis diagram for BCH-encoded information is disclosed. BCH-encoded information is received, having a corresponding parity check matrix H. The parity check matrix H is expressed as an ordered sequence of columns of matrices. A sequence of sub-code words is provided, corresponding to one or more code words, each satisfying a given condition. A matrix Hcp, having columns that are generated as a selected permutation of the columns of the matrix H through a column-permutation-for-binary-matching process, is provided, and a sequence of sub-matrices and a corresponding sequence of permuted sub-code words is provided. A trellis diagram, representing an ordered sequence of code word transitions in the received information and symmetric about a central location, is provided for each code word c, connecting n+1 stages, numbered i=0, 1, . . . , n, in an ordered sequence.
    • 公开了一种用于构建BCH编码信息的简化网格图的方法。 BCH编码信息被接收,具有对应的奇偶校验矩阵H.奇偶校验矩阵H表示为矩阵列的有序序列。 提供一个子代码字序列,对应于一个或多个代码字,每个代码字都满足给定条件。 提供了具有通过列置换二进制匹配处理作为矩阵H的列的选择排列生成的列的矩阵H pc, 提供矩阵和相应的排列子码字序列。 对于每个代码字c,提供了连接n + 1个阶段(编号为i = 0,1)的格子图,表示接收到的信息中的码字转换的有序序列并且关于中心位置对称的格状图。 。 。 ,n,有序序列。
    • 5. 发明授权
    • Low complexity multiple bits matched filter
    • 低复杂度多位匹配滤波器
    • US06426982B1
    • 2002-07-30
    • US09398939
    • 1999-09-17
    • Lin YangYan ZhongKevin Hwang
    • Lin YangYan ZhongKevin Hwang
    • H03D100
    • G06F17/15H04B1/707H04B7/195H04B2201/70707H04L27/2278H04L2027/0065
    • Method and system for efficiently and quickly forming a sequence of convolution values from an over-sampled digital signal sequence. Convolution value differences are computable from a set of digital signal values that is smaller than the original set of signal values by a factor of R, the over-sampling rate. The number of adders and the associated time delay for computation of the convolution differences are reduced by at least a factor R and by at least a factor approximately proportional to log2(R), respectively, as compared to conventional computation of a convolution value. This approach is used to estimate a time value for which the convolution attains a largest magnitude or value.
    • 用于从过采样数字信号序列有效且快速地形成卷积值序列的方法和系统。 卷积值差异可以从一组数字信号值计算,该组数字信号值小于原始信号值集合乘以R的倍数,即过采样率。 与卷积值的常规计算相比,用于计算卷积差的加法器的数量和相关联的时间延迟分别减少至少一个因子R和至少一个与log 2(R)成比例的因子。 该方法用于估计卷积达到最大幅度或值的时间值。
    • 7. 发明授权
    • Method and apparatus for decoding a LDPC code
    • 用于对LDPC码进行解码的方法和装置
    • US07996752B2
    • 2011-08-09
    • US11744860
    • 2007-05-05
    • Abhiram PrabhakarYan Zhong
    • Abhiram PrabhakarYan Zhong
    • G06F11/00
    • H03M13/1105H03M13/6516
    • In a decoder for decoding a low density parity check (LDPC) code suitable for decoding multi-rated LDPC codes, a method is provided. The method comprises the steps of: providing a memory for the decoding with the memory dependent on a parity check matrix H with maximum number of “1”s; using a number of column updating units, updating columns parallely and simultaneously producing messages; and using a number of row updating units, updating rows parallely and simultaneously producing messages. Whereby an improved architecture in a logic and the memory is provided such that an improved throughput, power consumption, and memory area is achieved.
    • 在用于解码适用于解码多等级LDPC码的低密度奇偶校验(LDPC)码的解码器中,提供了一种方法。 该方法包括以下步骤:依赖于具有最大数量“1”的奇偶校验矩阵H提供用于使用存储器进行解码的存储器; 使用多个列更新单元,更新列并行并同时生成消息; 并使用多个行更新单元,并行地并行地生成消息。 由此提供了逻辑和存储器中的改进的架构,使得实现了改进的吞吐量,功耗和存储器区域。
    • 8. 发明授权
    • Lamp ballast having filament heating apparatus for gas discharge lamp
    • 具有气体放电灯灯丝加热装置的灯具镇流器
    • US09013106B2
    • 2015-04-21
    • US13242170
    • 2011-09-23
    • Weiqiang ZhangQi ZhangYan ZhongChing-Ho ChouJianping Ying
    • Weiqiang ZhangQi ZhangYan ZhongChing-Ho ChouJianping Ying
    • H01J13/32H05B41/295
    • H05B41/295
    • Provided is a lamp ballast having a filament heating apparatus for gas discharge lamp, including a PFC converter for receiving an AC input voltage and converting the AC input voltage into a DC bus voltage; an inverter connected to an output end of the PFC converter for converting the DC bus voltage into an AC output voltage for driving gas discharge lamps; and a filament heating apparatus connected to the output end of the PFC converter. The filament heating apparatus includes an auxiliary heating circuit for converting the DC bus voltage into a heating power for pre-heating the filaments of the gas discharge lamps; and a control circuit connected to the inverter and the auxiliary heating circuit for generating an auxiliary voltage according to the heating power to activate the PFC converter. After the auxiliary heating circuit has been operating for a predetermined period of time, the auxiliary heating circuit is turned off first and then the inverter is turned on; or otherwise the inverter is turned on first and then the auxiliary heating circuit is turned off.
    • 提供一种具有用于气体放电灯的灯丝加热装置的灯镇流器,包括用于接收AC输入电压并将AC输入电压转换成DC总线电压的PFC转换器; 连接到PFC转换器的输出端的逆变器,用于将DC总线电压转换成用于驱动气体放电灯的AC输出电压; 以及连接到PFC转换器的输出端的灯丝加热装置。 灯丝加热装置包括辅助加热电路,用于将直流母线电压转换成用于对气体放电灯的细丝进行预热的加热功率; 以及连接到逆变器和辅助加热电路的控制电路,用于根据加热功率产生辅助电压以激活PFC转换器。 在辅助加热电路已经运行预定时间段之后,首先关闭辅助加热电路,然后使逆变器接通; 否则逆变器首先接通,然后辅助加热电路关闭。
    • 10. 发明授权
    • Electronic ballast
    • 电子镇流器
    • US08742670B2
    • 2014-06-03
    • US13530380
    • 2012-06-22
    • Yan ZhongWeiqiang ZhangJianPing Ying
    • Yan ZhongWeiqiang ZhangJianPing Ying
    • H05B41/36H01J61/52
    • H05B41/2828H05B41/3927
    • The electronic ballast includes: a square wave generator that includes a plurality of switching elements to convert a DC input voltage to an AC square wave output voltage; a transformer that includes a driving winding, a plurality of control windings, at least one inductive winding and at least one control driving circuit. The control windings controls the plurality of switching elements to turn on alternately; a resonant circuit that constitutes a resonant loop together with the driving winding is electrically connected with an output terminal of the square wave generator to drive the light emitting element. The control driving circuit is connected with two terminals of the inductive winding in parallel and receives a control signal to control a voltage across the inductive winding so as to control conducting time of at least one of the switching elements.
    • 电子镇流器包括:方波发生器,其包括将DC输入电压转换为AC方波输出电压的多个开关元件; 包括驱动绕组,多个控制绕组,至少一个感应绕组和至少一个控制驱动电路的变压器。 控制绕组控制多个开关元件交替地接通; 与驱动绕组一起构成谐振回路的谐振电路与方波发生器的输出端电连接,驱动发光元件。 控制驱动电路并联连接电感线圈的两个端子,并接收控制信号以控制感应绕组两端的电压,以控制至少一个开关元件的导通时间。