专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06961583B2 Wireless network system selection mechanism within a mobile station 失效
标题翻译：移动台内的无线网络系统选择机制
公开(公告)号：US06961583B2
公开(公告)日：2005-11-01
申请号：US09317336
申请日：1999-05-24
申请人： Bryan Jeffery Moles , Nim Keung Leung , Sing-Wai Wu
发明人： Bryan Jeffery Moles , Nim Keung Leung , Sing-Wai Wu
IPC分类号： H04W24/00 , H04W36/14 , H04W48/18 , H04W88/06 , H04Q7/20
CPC分类号： H04W36/30 , H04W36/14 , H04W88/06
摘要： A multi-mode mobile station independently determines the radio signal quality of a serving mobile system by evaluating the error rate associated with the received forward-link-channel messages. In response to a determination that the calculated error rate is greater than an acceptable threshold level, the mobile station then attempts to access an alternative service system capable of providing better and more reliable telecommunications service.
摘要翻译：多模式移动台通过评估与所接收的前向链路信道消息相关联的错误率来独立地确定服务移动系统的无线电信号质量。响应于所计算的错误率大于可接受的阈值水平的确定，移动台然后尝试访问能够提供更好和更可靠的电信服务的替代服务系统。

2. 发明授权

US5721543A System and method for modeling discrete data sequences 失效
标题翻译：用于离散数据序列建模的系统和方法
公开(公告)号：US5721543A
公开(公告)日：1998-02-24
申请号：US497546
申请日：1995-06-30
申请人： Steven Andrew Johnson , Li-Zhe Tan , Sing-Wai Wu
发明人： Steven Andrew Johnson , Li-Zhe Tan , Sing-Wai Wu
IPC分类号： G06T9/00 , G06T5/00 , G03K9/36
CPC分类号： G06T9/001
摘要： An encoder and decoder system for compressing discrete data sequences is disclosed. The encoder includes a self-affine map generator and a backward adaptive map generator which model source vectors formed from a discrete data sequence. The self-affine map generator uses known modeling techniques to determine map parameters for mapping functions. The mapping functions are evaluated by computing a collage error and the mapping function corresponding to the smallest collage error is selected. The backward adaptive map generator determines map parameters for mapping functions which map vectors previously generated to represent the discrete data sequence to the source vector. A distance measurement is computed for each target vector/mapping function combination and the mapping function corresponding to the smallest distance measurement is selected. A map evaluator determines whether the mapping function generated by the self-affine map generator or the backward adaptive map generator best represents the discrete data sequence. The inventive decoder includes an iterative decoder and a backward decoder. The iterative decoder uses a deterministic or random iteration algorithm to generate a synthesized vector from a mapping function received from an encoder. The backward decoder retrieves a vector from a sample buffer at the decoder which corresponds to the vector used to generate the mapping function. The sample buffer contains previously decoded vectors. The mapping function is applied to the retrieved vector once to generate the synthesized vector representing a source vector at the encoder. The decoder selects the affine decoder or the backward decoder based upon a token from the encoder which identifies the process which generated the mapping function.
摘要翻译：公开了一种用于压缩离散数据序列的编码器和解码器系统。编码器包括自偏振地图生成器和向后自适应地图生成器，其对从离散数据序列形成的源矢量进行建模。自我仿射地图生成器使用已知的建模技术来确定映射函数的映射参数。通过计算拼贴错误来评估映射函数，并选择对应于最小拼贴错误的映射函数。反向自适应地图生成器确定用于映射函数的映射参数，其映射先前生成的用于表示离散数据序列的向量到源向量。为每个目标矢量/映射函数组合计算距离测量，并选择与最小距离测量对应的映射函数。地图评估器确定自拟映射生成器或后向自适应映射生成器生成的映射函数是否最好地表示离散数据序列。本发明的解码器包括迭代解码器和反向解码器。迭代解码器使用确定性或随机迭代算法从编码器接收的映射函数生成合成向量。反向解码器从对应于用于生成映射函数的向量的解码器处的采样缓冲器中检索向量。样本缓冲区包含先前解码的向量。将映射函数应用于检索向量一次，以生成表示编码器处的源向量的合成向量。解码器基于来自编码器的识别生成映射函数的处理的令牌来选择仿射解码器或反向解码器。

3. 发明授权

US5822721A Method and apparatus for fractal-excited linear predictive coding of digital signals 失效
$Method and apparatus for fractal-excited linear predictive coding of digital signals$
标题翻译：数字信号分形激励线性预测编码方法与装置
公开(公告)号：US5822721A
公开(公告)日：1998-10-13
申请号：US577540
申请日：1995-12-22
申请人： Steven A. Johnson , Sing-Wai Wu
发明人： Steven A. Johnson , Sing-Wai Wu
IPC分类号： G06T9/00 , G10L19/08 , G10L19/12 , G10L9/14 , H03M7/50
CPC分类号： G10L19/08 , G06T9/001 , G10L19/12 , G10L25/36
摘要： A method for encoding and decoding digital signals, particularly speech signals, by separating the original signal into a linear and nonlinear portions, the nonlinear portion may have linear aspects. The linear portion is encoded by LPC techniques and the nonlinear portion is encoded by use of a fractal transform. The encoded signal consists of LPC filter coefficients and fractal transform coefficients. The encoded signal is decoded by separating the LPC coefficients and fractal coefficients, using the LPC coefficients to generate an LPC filter, decoding the fractal coefficients using a fractal transform decoding method to obtain an error signal, and exciting the LPC filter with the decoded error signal to obtain decoded digital signals.
摘要翻译：一种通过将原始信号分离为线性和非线性部分来对数字信号，特别是语音信号进行编码和解码的方法，非线性部分可以具有线性方面。线性部分由LPC技术编码，非线性部分通过使用分形变换进行编码。编码信号由LPC滤波器系数和分形变换系数组成。通过使用LPC系数分离LPC系数和分形系数来对编码信号进行解码，以生成LPC滤波器，使用分形变换解码方法对分形系数进行解码以获得误差信号，并用解码的误差信号激励LPC滤波器以获得解码的数字信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式