Multiplexing octets from a data flow over MPEG packets
    151.
    发明授权
    Multiplexing octets from a data flow over MPEG packets 有权
    通过MPEG数据包从数据流中复用八位字节

    公开(公告)号:US07590145B2

    公开(公告)日:2009-09-15

    申请号:US10881258

    申请日:2004-06-30

    Abstract: Multiplexing of information from a plurality of information flows into fixed-length packets such as, but not limited to, MPEG packets allows efficient utilization of bandwidth and also can be used to reduce transmission latency. In addition, utilizing MPEG packets and transport streams for octet multiplexing allows the packets carrying octet-multiplexed data to easily be integrated with other MPEG packets for other services that are commonly found in cable transmission networks of all coax, hybrid fiber coax, and/or all fiber. Moreover, the multiplexing techniques described herein will work in both wired (or constrained media) and wireless (or free-space propagation) environments. The multiplexing/demultiplexing of octets using MPEG packets generally is described by mappings that specify the use of octets in MPEG packets. Changes to allocations in a map generally should be propagated in a way that reliably ensures that both the transmitter and receiver have a consistent view of the octet mappings.

    Abstract translation: 从多个信息中将信息多路复用到固定长度分组中,例如但不限于MPEG分组,允许有效利用带宽,并且还可以用于减少传输等待时间。 另外,利用MPEG分组和传输流进行八位字节复用允许携带八位字节复用数据的分组容易地与其他所有同轴电缆,混合光纤同轴电缆的有线传输网络中常见的其他服务的其他MPEG分组集成,和/或 所有纤维。 此外,本文描述的复用技术将在有线(或约束介质)和无线(或自由空间传播)环境中起作用。 使用MPEG分组的八位字节的复用/解复用通常由指定在MPEG分组中使用八位字节的映射来描述。 映射中对分配的更改通常应以可靠地确保发送器和接收器都具有八位字节映射的一致视图的方式进行传播。

    Method for Controlling the Shapes of FM-AM Mixed Dots on a Multi-Bit Depth Imaging Apparatus
    153.
    发明申请
    Method for Controlling the Shapes of FM-AM Mixed Dots on a Multi-Bit Depth Imaging Apparatus 有权
    在多位深度成像仪上控制FM-AM混合点形状的方法

    公开(公告)号:US20080285085A1

    公开(公告)日:2008-11-20

    申请号:US12091287

    申请日:2006-04-29

    Inventor: Haifeng Li Bin Yang

    CPC classification number: H04N1/4057 H04N1/4053

    Abstract: Disclosed is a method for controlling the shapes of FM-AM mixed halftone dots on the multi-bit depth imaging apparatus. In the prior art, since the reproduction of the shapes of the dots in various gradations is absolutely based on the theory of random error diffusion and is influenced by the dynamic controlling output mechanism for the multi-bit dots, it is hard to assure the controllability of the shapes of the dots in a certain gradation. Based on the prior art, the dynamic statistic algorithm with adjacent output gray levels is introduced to assure the controllability of the shapes of the dots and solve the problem of random change of the shapes of the dots due to the randomicity of the error diffusion. According to the disclosed method, the features of the multi-bit imaging apparatus can be achieved fully in light of the requirements of the dots on the basis of the original method for multi-bit FM-AM mixed screening using error diffusion based on dual-feedback. The effect of FM-AM mixed halftone screening can be achieved under low resolution with controllable shapes of the dots, The problem of granular sensation can be solved during the practical output of the mixed halftone dots so as to assure the smooth effect of the gradations.

    Abstract translation: 公开了一种用于在多位深度成像装置上控制FM-AM混合网版点的形状的方法。 在现有技术中,由于各种等级的点的形状的再现绝对基于随机误差扩散的理论,并且受到多位点的动态控制输出机制的影响,难以确保可控性 的一些等级的点的形状。 基于现有技术,引入具有相邻输出灰度级的动态统计算法,以确保点的形状的可控性,并解决由于误差扩散的随机性引起的点形状的随机变化的问题。 根据所公开的方法,可以根据基于双位FM-AM混合筛选的原始方法的点的要求,充分实现多比特成像装置的特征, 反馈。 FM-AM混合半色调筛选的效果可以在低分辨率下实现,具有可控形状的点,可以在混合网点的实际输出期间解决颗粒感觉的问题,以确保灰度的平滑效果。

    Manufacturing Process of a Composite Bamboo Board
    154.
    发明申请
    Manufacturing Process of a Composite Bamboo Board 审中-公开
    复合竹板的制造工艺

    公开(公告)号:US20080277055A1

    公开(公告)日:2008-11-13

    申请号:US11996676

    申请日:2006-09-20

    CPC classification number: B27N3/04 B27N3/08

    Abstract: Manufacturing process of a composite bamboo board, comprising assembling and hot-pressing adhesive-coated bamboo fiber bundles, wherein the said adhesive is a composition comprising of adhesive base material, coupling agent and impregnating wetting agent, the said adhesive base material is one or more selected from a group consisting of urea-formaldehyde resin, melamine, phenolic resin, and water based isocyanate; the said coupling agent is agent which can couple the interfaces of bamboo fiber bundles and the adhesive base material; the impregnating wetting agent is one or more surfactant; and the said hot-pressing includes heating by using high-frequency electromagnetic field with frequency being of 1 KHz or higher and compressing the adhesive-coated bamboo fiber bundles.

    Abstract translation: 一种复合竹板的制造方法,包括组装和热压粘合剂包覆的竹纤维束,其中所述粘合剂是由粘合剂基材,偶联剂和浸渍润湿剂组成的组合物,所述粘合剂基材是一种或多种 选自脲醛树脂,三聚氰胺,酚醛树脂和水基异氰酸酯; 所述偶联剂是可以耦合竹纤维束和粘合剂基材的界面的试剂; 浸渍润湿剂是一种或多种表面活性剂; 并且所述热压包括通过使用频率为1KHz或更高的高频电磁场进行加热并压缩粘合剂涂覆的竹纤维束。

    Method and device for transmitting and identifying a modulation type in digital communication systems by way of a phase rotation factor applied to a training sequence
    155.
    发明授权
    Method and device for transmitting and identifying a modulation type in digital communication systems by way of a phase rotation factor applied to a training sequence 有权
    用于通过应用于训练序列的相位旋转因子来发送和识别数字通信系统中的调制类型的方法和装置

    公开(公告)号:US07313204B2

    公开(公告)日:2007-12-25

    申请号:US10706779

    申请日:2003-11-12

    Applicant: Bin Yang

    Inventor: Bin Yang

    CPC classification number: H04L27/2017 H04L27/0008 H04L27/0012 H04L27/2067

    Abstract: Data symbols in the training sequence are rotated at the transmitter end through a phase rotation factor which is specific for a given modulation type that is used. For blind modulation detection at the receiver end, the data symbols are derotated through different phase rotation factors, and a correlation function is formed between the sequences obtained in this way and the original training sequence. The type of modulation which is used is obtained from the phase rotation factor which produces a maximum for the correlation function.

    Abstract translation: 训练序列中的数据符号在发射机端通过相对于所使用的给定调制类型特有的相位旋转因子旋转。 对于接收端的盲调制检测,通过不同的相位旋转因子对数据符号进行解调,并且在以这种方式获得的序列与原始训练序列之间形成相关函数。 所使用的调制类型是从产生相关函数最大值的相位旋转因子获得的。

    Method and circuit for digitally correcting the frequency of a signal
    156.
    发明授权
    Method and circuit for digitally correcting the frequency of a signal 有权
    用于数字校正信号频率的方法和电路

    公开(公告)号:US07173982B1

    公开(公告)日:2007-02-06

    申请号:US10089805

    申请日:2000-10-11

    Abstract: A method and a circuit for the digital correction of a frequency of a signal, especially for use in a transmitter/receiver circuit include rotating a signal “pointer” (i0, q0) using a CORDIC algorithm, through a predetermined angle in a complex I/Q plane corresponding to a correction frequency. The CORDIC algorithm includes micro-rotation blocks corresponding to N stages, and a character table and a register.

    Abstract translation: 用于数字校正信号的方法和电路,特别是用于发射机/接收机电路中的频率的数字校正包括使用CORDIC算法在复合体I中以预定的角度旋转信号“指针”(i0,q0) / Q平面对应于校正频率。 CORDIC算法包括对应于N个级的微旋转块,以及一个字符表和一个寄存器。

    Method for detection of pilot tones
    160.
    发明授权
    Method for detection of pilot tones 有权
    检测导频音的方法

    公开(公告)号:US06396883B2

    公开(公告)日:2002-05-28

    申请号:US09930411

    申请日:2001-08-15

    CPC classification number: H04B1/76 H04L25/061 H04L27/22

    Abstract: A method identifies a pulse sequence having known values and a known length in a signal. According to this method, the mathematical sign of the phase difference between samples of the signal is used to estimate whether the transmitted pulse is a 1 or a 0. Undersampling, carried out to a selectable extent, produces a relatively insensitive response to adjacent channel interference. The sum of the pulses in a window which is proportional to the length of the pulse sequence and to the extent of the undersampling is determined, with the pulse sequence being regarded as being identified at the point in time at which the sum of the pulses in this search window exceeds a threshold value.

    Abstract translation: 方法识别在信号中具有已知值和已知长度的脉冲序列。 根据该方法,使用信号样本之间的相位差的数学符号来估计所发送的脉冲是1或是0。在可选范围内进行的取样对相邻信道干扰产生相对不敏感的响应 。 确定窗口中与脉冲序列的长度成比例的脉冲与欠采样的范围之间的脉冲之和,其中脉冲序列被认为是在时间上的脉冲之和 该搜索窗口超过阈值。

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