Log converter utilizing offset and method of use thereof
    1.
    发明授权
    Log converter utilizing offset and method of use thereof 失效
    利用偏移的对数转换器及其使用方法

    公开(公告)号:US6065031A

    公开(公告)日:2000-05-16

    申请号:US853616

    申请日:1997-05-09

    CPC分类号: H03M7/50 G06F1/035 G06F7/556

    摘要: A digital log converter is provided which includes a comparator (10) and a log signal generator (20). Upon receiving a digital input signal (12), the comparator (10) determines whether an upper bit-slice of the input signal (12) equals zero. If the upper bit-slice is zero, the log signal generator (20) subtracts an offset from at least one parameter to generate a log signal (16); otherwise, the log signal generator (20) interpolates the at least one parameter and a lower bit-slice of the input signal (12) to generate the log signal (16).

    摘要翻译: 提供了一种数字对数转换器,其包括比较器(10)和对数信号发生器(20)。 在接收到数字输入信号(12)时,比较器(10)确定输入信号(12)的高位位元是否等于零。 如果高位位置为零,则对数信号发生器(20)从至少一个参数减去偏移量以产生对数信号(16); 否则,对数信号发生器(20)内插输入信号(12)的至少一个参数和较低位片,以产生对数信号(16)。

    Method and system for performing an L.sub.11 norm operation
    2.
    发明授权
    Method and system for performing an L.sub.11 norm operation 失效
    执行L11标准运算的方法和系统

    公开(公告)号:US6000835A

    公开(公告)日:1999-12-14

    申请号:US898645

    申请日:1997-07-22

    摘要: A method and system for an L.sub.1 norm operation are provided. A sequence of input signals is distributed through a data pipeline to a programmable accumulator. The accumulator sums the input signals to generate an output signal. The L.sub.1 norm operation can be performed using the distance between two vectors.

    摘要翻译: 提供了L1范数运算的方法和系统。 输入信号序列通过数据流水线分配到可编程累加器。 累加器对输入信号进行求和以产生输出信号。 可以使用两个向量之间的距离来执行L1范数操作。

    Signal processor and method for Fourier Transformation
    3.
    发明授权
    Signal processor and method for Fourier Transformation 失效
    傅立叶变换的信号处理器和方法

    公开(公告)号:US5968112A

    公开(公告)日:1999-10-19

    申请号:US923845

    申请日:1997-09-04

    IPC分类号: G06F17/14

    CPC分类号: G06F17/142

    摘要: Parallel signal processor (10) (FIG. 2) performs a Fourier Transformation of an input signal; The transformation coefficients are converted once to logarithmic form and stored in a cache memory. The input data is converted serially to logarithmic form, and fed to all processing units in parallel. The processing units compute their respective products as additions in the logarithmic domain. Then, the products are converted back to the normal domain. The products with the correct sign are summed by an accumulator of the respective processing element. After the last signal data point has run through the processing elements and the last products are added to their respective sums, all complex output signal data points are complete simultaneously.

    摘要翻译: 并行信号处理器(10)(图2)执行输入信号的傅里叶变换; 变换系数一次转换为对数形式并存储在高速缓冲存储器中。 输入数据被串行转换成对数形式,并且并行地馈送到所有处理单元。 处理单元计算它们各自的产物作为对数域中的添加。 然后,产品转换回正常域。 具有正确符号的产品由相应处理元件的累加器相加。 在最后一个信号数据点已经通过处理元件并且最后的产品被添加到它们各自的和之后,所有复杂的输出信号数据点都是同时完成的。

    Method and system for digital beam forming
    4.
    发明授权
    Method and system for digital beam forming 失效
    数字波束成形的方法和系统

    公开(公告)号:US5917447A

    公开(公告)日:1999-06-29

    申请号:US654946

    申请日:1996-05-29

    CPC分类号: H01Q3/26

    摘要: A digital beam forming system includes an array of computing units (60-76) for weighting incoming signals and a plurality of summing processors (80-84) for generating output signals that represent weighted sums corresponding to rows within the array. The digital beam forming system can be incorporated in either a transmitter or receiver used in a radio frequency communications system.

    摘要翻译: 数字波束形成系统包括用于加权输入信号的计算单元阵列(60-76)和多个求和处理器(80-84),用于产生表示对应于阵列内的行的加权和的输出信号。 数字波束形成系统可以结合在射频通信系统中使用的发射机或接收机中。

    Video system performing non-uniform interpolation of color space signals
and method of using same
    5.
    发明授权
    Video system performing non-uniform interpolation of color space signals and method of using same 失效
    执行彩色空间信号的非均匀插值的视频系统及其使用方法

    公开(公告)号:US5742350A

    公开(公告)日:1998-04-21

    申请号:US496641

    申请日:1995-06-29

    摘要: A real-time video system which performs non-uniform interpolation between adjacent vertical scan lines is presented. The video system includes a converter, a memory, an enhanced-video circuit, and a sync generator. The video system decodes and digitizes an analog composite video signal, such as an NTSC, PAL, or SECAM signal, and generates a digital video signal having a greater number of horizontal scan lines than the analog video signal. The video system is programmable to allow a different number of scan lines in the output digital video signal.

    摘要翻译: 提出了一种在相邻垂直扫描线之间执行不均匀插值的实时视频系统。 视频系统包括转换器,存储器,增强型视频电路和同步发生器。 视频系统对诸如NTSC,PAL或SECAM信号的模拟复合视频信号进行解码和数字化,并且生成具有比模拟视频信号更多数量的水平扫描线的数字视频信号。 视频系统是可编程的,以允许输出数字视频信号中的不同数量的扫描线。

    Computer Processor utilizing logarithmic conversion and method of use
thereof
    6.
    发明授权
    Computer Processor utilizing logarithmic conversion and method of use thereof 失效
    利用对数转换的计算机处理器及其使用方法

    公开(公告)号:US5685008A

    公开(公告)日:1997-11-04

    申请号:US403158

    申请日:1995-03-13

    摘要: A computer processor for performing mathematical operations includes a logarithm converter which generates log values on a data bus, a plurality of processing elements connected to the data bus, an inverse-logarithm converter which receives values from the processing elements, an accumulator which sums converted values from the inverse-logarithm converter, and a control unit for configuring the accumulator to perform various summing operations. The computer processor also includes a switch for providing processor outputs as feedback. An instruction, selected from a set of instructions, is decoded by the control unit to configure the computer processor to perform operations on a data stream.

    摘要翻译: 用于执行数学运算的计算机处理器包括对数转换器,其在数据总线上生成对数值,连接到数据总线的多个处理元件,从对该处理元件接收值的反对数转换器,将转换值相加的累加器 以及用于配置所述累加器以执行各种求和操作的控制单元。 计算机处理器还包括用于提供处理器输出作为反馈的开关。 由一组指令选择的指令由控制单元解码以配置计算机处理器对数据流执行操作。

    Method and apparatus for controlling power during a dispatch group call
    7.
    发明授权
    Method and apparatus for controlling power during a dispatch group call 失效
    在调度组呼叫期间控制电力的方法和装置

    公开(公告)号:US06748231B2

    公开(公告)日:2004-06-08

    申请号:US09944468

    申请日:2001-08-31

    IPC分类号: H04B100

    摘要: Preferred embodiments of a method and an apparatus for controlling power during a dispatch group call in a wireless communication system are described. A base station (142) monitors for a transmission from a plurality of mobile stations (270) via a first communication resource during a time period. The base station (142) adjusts transmission power associated with a second communication resource based on the transmission from the plurality of mobile stations (270) via the first communication resource. Further, the base station (142) determines whether the transmission power associated with the second communication resource is above a transmission power threshold. In response to a failure to receive the transmission from the plurality of mobile stations (270) via the first communication resource during the time period and a failure to detect the transmission power associated with the second communication resource being above the power threshold, the base station (142) terminates transmissions to the plurality of mobile stations (270) via the second communication resource.

    摘要翻译: 描述了在无线通信系统中的调度组呼叫期间控制电力的方法和装置的优选实施例。 基站(142)在一段时间内经由第一通信资源来监视来自多个移动站(270)的传输。 基站(142)基于来自多个移动站(270)的经由第一通信资源的传输来调整与第二通信资源相关联的发送功率。 此外,基站(142)确定与第二通信资源相关联的发送功率是否高于发送功率阈值。 响应于在该时间段期间不经由第一通信资源从多个移动站(270)接收传输,并且检测到与第二通信资源相关联的发送功率高于功率阈值的故障,基站 (142)经由第二通信资源终止对多个移动站(270)的传输。

    Method and apparatus for producing wide null antenna patterns
    8.
    发明授权
    Method and apparatus for producing wide null antenna patterns 失效
    用于生成宽无效天线图案的方法和装置

    公开(公告)号:US6061023A

    公开(公告)日:2000-05-09

    申请号:US963485

    申请日:1997-11-03

    摘要: An enhanced digital beamformer (EDBF) (210, FIG. 2) is provided for use in a transceiver subsystem (200, FIG. 2) for mitigating interference and increasing the frequency reuse factor in communication systems. The EDBF is used to produce wide nulls (520, FIG. 5) in at least one steerable antenna beam pattern. By directing wide nulls at undesired signals, the EDBF provides a more efficient processing of antenna beam patterns in communication systems. The EDBF is used in geostationary satellites, non-geostationary satellites, and terrestrial communication devices. The EDBF combines a unique algorithm, a special processor, and an array antenna to significantly improve the capacity of current and future communication systems, while remaining compatible with existing modulation techniques.

    摘要翻译: 增强数字波束形成器(EDBF)(210,图2)被提供用于收发器子系统(图2中的200),用于减轻干扰并增加通信系统中的频率重用因子。 EDBF用于在至少一个可导向天线波束图案中产生宽空值(520,图5)。 通过在不期望的信号处引导宽的零点,EDBF在通信系统中提供更有效的天线波束图案的处理。 EDBF用于对地静止卫星,非对地静止卫星和地面通信设备。 EDBF结合了独特的算法,特殊处理器和阵列天线,以显着提高当前和未来通信系统的容量,同时保持与现有调制技术的兼容性。

    Method and system for compressing a video signal using dynamic frame
recovery
    10.
    发明授权
    Method and system for compressing a video signal using dynamic frame recovery 失效
    使用动态帧恢复压缩视频信号的方法和系统

    公开(公告)号:US5831872A

    公开(公告)日:1998-11-03

    申请号:US496122

    申请日:1995-06-27

    摘要: A video signal is converted into a coefficient signal for each frame in a video image. Each coefficient signal comprises block coefficient signals which represent the pixels in a pixel map block (420) in a pixel map (410) with the coefficients in a hybrid polynomial. The coefficient signal for only selected frames is transmitted to a receiving computer (130). The coefficient signals are selected based on a number of coefficients in the coefficient signal for a current frame that vary from corresponding coefficients in the coefficient signal for a sequentially previous frame.

    摘要翻译: 视频信号被转换为视频图像中的每个帧的系数信号。 每个系数信号包括块系数信号,其表示像素图(410)中的像素映射块(420)中具有混合多项式中的系数的像素。 只有选择的帧的系数信号被发送到接收计算机(130)。 系数信号是根据当前帧的系数信号中的一系列系数来选择的,该系数信号随着前一帧的系数信号中的相应系数而变化。