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    • 6. 发明授权
    • Apparatus and method of processing bitstream of embedded codec which is received in units of packets
    • 以分组为单位接收的嵌入式编解码器的比特流的处理装置和方法
    • US07773633B2
    • 2010-08-10
    • US11635512
    • 2006-12-08
    • Mi Suk LeeDae Ho KimDo Young Kim
    • Mi Suk LeeDae Ho KimDo Young Kim
    • H04J3/00
    • H04L47/10H04L29/06027H04L47/2416H04L47/34H04L65/604H04L65/607H04L65/80
    • Provided are a packet processing apparatus and method used when an output bitstream of an embedded codec is divided into a plurality of packets and transmitted accordingly, and more particularly, an efficient packet processing apparatus and method which can reduce deterioration of sound quality which may occur when a packet required for the reproduction of a voice signal is not received due to different arrival times of a plurality of packets at a receiving end if an output bitstream of an embedded codec is divided into the packets and transmitted accordingly through a path or a plurality of paths. In particular, an apparatus for processing packets of an embedded codec is provided. The apparatus includes a packet reception unit receiving packets, a layer information unit identifying layer information from received packets, a bitstream determination unit using the received packets, and a bitstream generation unit generating a new bitstream. The apparatus is used to provide a voice and multimedia service using an embedded codec in a packet network.
    • 提供了当嵌入式编解码器的输出比特流被分成多个分组并相应地发送时使用的分组处理装置和方法,更具体地说,提供一种可以降低可能发生的声音质量恶化的有效分组处理装置和方法, 如果嵌入式编解码器的输出比特流被划分成分组并通过路径或多个分组相应地传送,则由于接收端的多个分组的到达时间不同,则不接收再现语音信号所需的分组 路径。 特别地,提供了一种用于处理嵌入式编解码器的分组的装置。 该装置包括接收分组的分组接收单元,从接收分组识别层信息的层信息单元,使用接收到的分组的比特流确定单元,以及生成新比特流的比特流生成单元。 该装置用于在分组网络中使用嵌入式编解码器来提供语音和多媒体服务。
    • 7. 发明授权
    • Apparatus and method for transcoding between CELP type codecs having different bandwidths
    • 用于在具有不同带宽的CELP型编解码器之间进行代码转换的装置和方法
    • US07684978B2
    • 2010-03-23
    • US10697909
    • 2003-10-30
    • Jongmo SungSang Taick ParkDo Young KimBong Tae Kim
    • Jongmo SungSang Taick ParkDo Young KimBong Tae Kim
    • G10L19/12G10L19/14G10L19/06G10L19/00G10L13/00
    • G10L19/173G10L19/12
    • The present invention overcomes problems of tandem coding method such as degradation of speech quality, increased system latency and computations. An apparatus for trans-coding between code excited linear prediction (CELP) type codecs with different bandwidths, includes: a format parameter translating unit for generating output formant parameters by translating formant parameters from input CELP format to output CELP format; a formant parameter quantizing unit for receiving the output format formant parameters and quantizing the output format formant filter coefficients; an excited parameter translating unit for generating output excitation parameters by translating excitation parameters from input CELP format to output CELP format; and an excitation quantizing unit for receiving the output format excitation parameters and quantizing the output format excitation parameters.
    • 本发明克服了语音质量下降,系统延迟和计算增加等串联编码方法的问题。 一种用于在具有不同带宽的码激励线性预测(CELP)型编解码器之间进行转码的装置,包括:格式参数转换单元,用于通过将共振峰参数从输入CELP格式转换为输出CELP格式来产生输出共振峰参数; 共振峰参数量化单元,用于接收输出格式共振峰参数并量化输出格式共振峰滤波器系数; 激励参数转换单元,用于通过将激励参数从输入CELP格式转换为输出CELP格式来产生输出激励参数; 以及激励量化单元,用于接收输出格式激励参数并量化输出格式激励参数。