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公开(公告)号：US06570509B2
公开(公告)日：2003-05-27
申请号：US09795584
申请日：2001-02-28
IPC分类号： H03M700
CPC分类号： G10L19/005 , G10L19/18 , H03M13/23 , H04L1/0006
摘要： In a data transmitter having a data encoder, an encoder mode is detected. Thereafter, an excluded codeword output by the encoder operating in the encoder mode is identified. Next, a selected bit in the excluded codeword caused to have a predetermined value to produce a non-excluded codeword. Finally, the excluded codeword is substituted with the non-excluded codeword, wherein the non-excluded codeword is selected to mitigate effects of a decoding error in a receiver associated with the excluded codeword.
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公开(公告)号：US07003045B2
公开(公告)日：2006-02-21
申请号：US09774893
申请日：2001-01-31
CPC分类号： H03M13/6516 , H03M13/23 , H03M13/2707 , H03M13/41 , H03M13/413 , H04L1/0054
摘要： A convolutional encoder (112) comprises a controller (201), having a transmission rate (e.g. frame rate) as an input. The controller (201) initializes the encoder (112) to an initial state based on a transmission rate currently being utilized. When decoding, a decoder (300) utilizes a Trellis diagram having an initial and final state based upon the frame rate.
摘要翻译： 卷积编码器（112）包括具有作为输入的传输速率（例如帧速率）的控制器（201）。 控制器（201）基于当前使用的传输速率将编码器（112）初始化为初始状态。 当解码时，解码器（300）利用具有基于帧速率的初始状态和最终状态的网格图。
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公开(公告)号：US06285682B1
公开(公告)日：2001-09-04
申请号：US09563767
申请日：2000-05-01
IPC分类号： H04L1256
CPC分类号： H04L25/0262 , H04L1/0046 , H04L41/5009 , H04W28/22
摘要： Because prior-art rate determination algorithms are prone to falsing, a sub-rate discrimination metric generator (160) is provided herein. The generator (160) correlates a received frame with known characteristics of sub-rate frames to generate additional metrics useful in rate determination. These metrics are passed to a modified rate determination algorithm (150).
摘要翻译： 因为现有技术的速率确定算法易于伪造，本文提供了子速率鉴别度量发生器（160）。 发生器（160）使接收到的帧与子速率帧的已知特征相关联，以产生用于速率确定的附加度量。 这些度量被传递到修改的速率确定算法（150）。
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公开(公告)号：US07395202B2
公开(公告)日：2008-07-01
申请号：US11148902
申请日：2005-06-09
IPC分类号： G10L19/00
CPC分类号： G10L19/005
摘要： Upon receiving (101) a vocoded voice frame and detecting (102) that the received vocoded voice frame comprises an erased frame, one automatically replaces (103) the erased frame with a valid frame having at least one error condition. In a preferred approach this error condition is one that is known to cause a receiving target platform to invoke a corresponding erasure process with respect to the valid frame when received.
摘要翻译： 在接收（101）声码语音帧并且检测（102）所接收的声码语音帧包括被擦除的帧时，一个用具有至少一个错误条件的有效帧自动替换（103）已擦除的帧。 在优选的方法中，该错误条件是已知的，以使得接收目标平台在接收时相对于有效帧调用相应的擦除过程。
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公开(公告)号：US06859456B1
公开(公告)日：2005-02-22
申请号：US09524066
申请日：2000-03-13
CPC分类号： H04L1/1841
摘要： An apparatus (18) and method (100) provide RLP data checking. The apparatus (10) includes a frame serialization stage (20) and a bad frame filter (22) that detects possible bad frames and reclassifies these bad frames as erasures. In this manner, bad frame data are not passed to the RLP layer (16), and unnecessary resetting and resynchronization steps are avoided.
摘要翻译： 设备（18）和方法（100）提供RLP数据检查。 装置（10）包括帧序列化级（20）和坏帧滤波器（22），其检测可能的坏帧并将这些不良帧重新分类为擦除。 以这种方式，坏帧数据不被传递到RLP层（16），并且避免了不必要的重置和再同步步骤。
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