Format programmable hardware packetizer
    1.
    发明授权
    Format programmable hardware packetizer 失效
    格式可编程硬件打包器

    公开(公告)号:US06577640B2

    公开(公告)日:2003-06-10

    申请号:US09920974

    申请日:2001-08-01

    IPC分类号: H04L1254

    CPC分类号: H04N21/226 H04N21/236

    摘要: A format programmable hardware packetizer (110) receives real-time raw input data (125) from a multimedia data source (103) via an analog to digital converter (105) and a data encoder (120) gated by encoder interrupts (127). The real-time raw input data is buffered in an internal byte collector of the packetizer (110). A main CPU interrupt (117) is issued to the main processor (130) when a packet boundary code is received. The packetizer (110) formats the data according to a desired format selected on line (115) for dump to the main memory (140) while providing a managed, much lower level of interrupts to the main processor (130) on the CPU interrupt line (117). A plurality of hardware packetizers (110) can be deployed according to alternative constructions for efficient real time packetizing in various selected formats.

    摘要翻译: 格式可编程硬件分组器(110)经由模数转换器(105)和由编码器中断(127)门控的数据编码器(120)从多媒体数据源(103)接收实时原始输入数据(125)。 实时原始输入数据被缓存在打包器(110)的内部字节收集器中。 当接收到分组边界码时,主CPU中断(117)被发送到主处理器(130)。 打包器(110)根据在线(115)上选择的期望格式将数据格式化,以转储到主存储器(140),同时向CPU中断线上的主处理器(130)提供被管理的,低得多的中断级别 (117)。 可以根据替代结构部署多个硬件打包器(110),以便以各种选择的格式进行有效的实时打包。

    Filter co-processor
    2.
    发明授权
    Filter co-processor 失效
    过滤协处理器

    公开(公告)号:US5905757A

    公开(公告)日:1999-05-18

    申请号:US725871

    申请日:1996-10-04

    CPC分类号: H04L25/03178 G06F7/5443

    摘要: A filter co-processor within a Digital Signal Processor (DSP) takes advantage of the orthogonal nature of modulated signals during the equalization process. Since, after reception, only certain real/imaginary values of the received signal are useful for demodulation, the filter co-processor only processes those values to estimate the transmitted signal. By processing only those values useful for demodulation, the filter co-processor is able to process more information in a given amount of time, leading to increased processing when compared to the prior art.

    摘要翻译: 数字信号处理器(DSP)中的滤波器协处理器在均衡处理期间利用调制信号的正交特性。 由于在接收之后,仅接收信号的某些实数/虚数值对于解调是有用的,所以滤波器协处理器仅处理这些值以估计发射信号。 通过只处理那些对于解调有用的值,滤波器协处理器能够在给定的时间量内处理更多的信息,导致与现有技术相比增加的处理。

    Method and apparatus for detecting interference in a receiver for use in
a wireless communication system
    3.
    发明授权
    Method and apparatus for detecting interference in a receiver for use in a wireless communication system 失效
    用于检测在无线通信系统中使用的接收机中的干扰的方法和装置

    公开(公告)号:US5715282A

    公开(公告)日:1998-02-03

    申请号:US643430

    申请日:1996-05-08

    IPC分类号: H04B1/10 H04B7/005

    CPC分类号: H04B7/005 H04B1/1027

    摘要: An apparatus for use in a receiver (100) of a wireless communication system is provided. The apparatus comprises a first filter (340) having a first cutoff frequency, a second filter (350) having a second cutoff frequency, a first data bit estimator (360) coupled to the first filter (340), a second data bit estimator (361) coupled to the second filter (350), a third data bit estimator (363), and decision logic (370) dynamically selecting one of the first and second filters based on a first bit count from the first data bit estimator (360), a second bit count from the second data bit estimator (361), and a third bit count from the third data bit estimator (363).

    摘要翻译: 提供一种在无线通信系统的接收机(100)中使用的装置。 该装置包括具有第一截止频率的第一滤波器(340),具有第二截止频率的第二滤波器(350),耦合到第一滤波器(340)的第一数据比特估计器(360),第二数据比特估计器 361),第三数据位估计器(363)和决定逻辑(370),基于来自第一数据位估计器(360)的第一位计数动态地选择第一和第二滤波器之一, ,来自第二数据位估计器(361)的第二位计数,以及来自第三数据位估计器(363)的第三位计数。