公开(公告)号：US07003106B2

公开(公告)日：2006-02-21

申请号：US10005291

申请日：2001-12-04

申请人： Jing Zheng Ouyang

发明人： Jing Zheng Ouyang

IPC分类号： H04L9/28

CPC分类号： G06F7/724

摘要： The improved AES processing method provides an efficient alternative to both Mips intensive multiplication and to conventional table lookup, used to multiply terms over a Galois field (GF). The improved method takes advantage of the fact that in the GF, any non zero element X can be represented by a power of a primitive element P. The improved method thereby results in a 2 by 256 table. The log base P of the terms being multiplied are looked up and summed, and the anti-log of the sum is looked up in the same table.

公开(公告)号：US06898568B2

公开(公告)日：2005-05-24

申请号：US09904999

申请日：2001-07-13

申请人： Kai Wa Ng ,  Nan Sheng Lin ,  Jing Zheng Ouyang

发明人： Kai Wa Ng ,  Nan Sheng Lin ,  Jing Zheng Ouyang

IPC分类号： G10L17/00

CPC分类号： G10L17/06 ,  G10L25/27

摘要： A identity of a remote speaker is verified by receiving compressed audio formants from a remote Internet telephony client and comparing the compressed audio formants with sample compressed audio formants known to represent the person the remote speaker purports to be. The compressed audio formants include energy and pitch data characterizing the residue of the speaker uttering a predetermined pass phrase and a plurality of formant coefficients characterizing the resonance of the speaker.

摘要翻译： 远程扬声器的身份通过从远程互联网电话客户端接收压缩音频共享器并且将压缩音频共享器与已知代表远程扬声器所声称的人的示例压缩音频共享器进行比较来验证。 压缩音频共振峰包括能量和音调数据，其表征说话者的残余物发出预定的通行短语，以及表征说话者共振的多个共振峰系数。

公开(公告)号：US06321357B1

公开(公告)日：2001-11-20

申请号：US09320165

申请日：1999-05-26

申请人： Jing Zheng Ouyang

发明人： Jing Zheng Ouyang

IPC分类号： H03M1317

CPC分类号： H03M13/271 ,  H03M13/17

摘要： A method and apparatus for improving burst error correction. The method and apparatus involve transmitting block codes with interleaving, and predicting a burst error in the received block codes. Burst error prediction includes decoding received block codes and determining if the decoding is successful. The method includes receiving a code having an error correction capability, an erasure detection capability and a burst error length associated with it. A decoding step is performed to find an error in the code. The error has a length associated with it. The decoding is successful if the error length found is less than twice the error correction capability. If an initial decode attempt is not successful, then a burst error length is associated with the code and another decode is performed. The burst error length has an initial value that is less than the error correction capability. The burst error length is incremented by a predetermined amount after each unsuccessful decode until the burst error length exceeds twice the error correction capability, at which point the decode is assumed to have failed.

摘要翻译： 一种用于改善突发错误校正的方法和装置。 该方法和装置涉及以交织方式传输块码，并预测接收到的块码中的突发错误。 突发错误预测包括解码接收的块码并确定解码是否成功。 该方法包括接收具有纠错能力的代码，擦除检测能力和与其相关联的突发错误长度。 执行解码步骤以发现代码中的错误。 该错误具有与之相关联的长度。 如果找到的错误长度小于纠错能力的两倍，则解码成功。 如果初始解码尝试不成功，则突发错误长度与代码相关联，并执行另一解码。 突发错误长度具有小于纠错能力的初始值。 在每个不成功解码之后，突发错误长度增加预定量，直到突发错误长度超过纠错能力的两倍，此时解码被认为已经失败。

公开(公告)号：US06178405B1

公开(公告)日：2001-01-23

申请号：US08751876

申请日：1996-11-18

申请人： Jing-Zheng Ouyang ,  Nan-Sheng Lin

发明人： Jing-Zheng Ouyang ,  Nan-Sheng Lin

IPC分类号： G10L2104

CPC分类号： H03M7/48

摘要： A data signal compression technique for real-time voice and data processing where the digitized signal is first compressed to obtain a first compressed signal, and the first compressed signal is then compressed again to obtain a second compressed signal. Within a digital signal processor, digital signals first undergo time scale compression after which the compressed signals undergo audio compression to achieve multiple-compressed signals. Upon reception in a second digital signal processor, the multiple-compressed signals are correspondingly decompressed to achieve a high-quality estimation of the original digital signals.

摘要翻译： 一种用于实时语音和数据处理的数据信号压缩技术，其中首先压缩数字化信号以获得第一压缩信号，然后再次压缩第一压缩信号以获得第二压缩信号。 在数字信号处理器中，数字信号首先进行时标压缩，之后压缩信号进行音频压缩以实现多压缩信号。 在第二数字信号处理器中接收时，相应地对多个压缩信号进行解压缩，以实现原始数字信号的高质量估计。