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    • 5. 发明授权
    • Multi-point conference system and multi-point conference device
    • 多点会议系统和多点会议设备
    • US07667729B2
    • 2010-02-23
    • US10599321
    • 2005-03-22
    • Kouichi MatsumotoKazunori Ozawa
    • Kouichi MatsumotoKazunori Ozawa
    • H04N7/15
    • H04N7/147H04N7/152
    • There are provided a multi-point conference system and a multi-point conference device capable of using an SIP terminal as a conference terminal and clearly and smoothly performing speaker switching without requesting a conference terminal to transmit an intra frame when a speaker is detected. The multi-point connection device includes an image processing unit for accumulating in a memory (13), image data from the conference terminal participating in the conference, and decoding the image data on the speaker accumulated in the memory (13) and re-encoding the decoded image upon detection of a speaker in a medium processing unit (15). Upon switching of a speaker, the image processing unit re-encodes the first image as an intra frame and transmits the image data to conference terminals other than that of the speaker, so that the conference terminals other than that of the speaker can perform decoding from the intra frame, thereby clearly and smoothly performing the speaker switching.
    • 提供了一种多点会议系统和能够使用SIP终端作为会议终端的多点会议装置,并且当检测到说话者时,不要求会议终端发送帧内帧,并且清楚和平稳地执行讲话者切换。 多点连接装置包括用于在存储器(13)中累积来自参加会议的会议终端的图像数据的图像处理单元,以及对存储器(13)中积累的扬声器上的图像数据进行解码并重新编码 在介质处理单元(15)中检测到扬声器时的解码图像。 在切换扬声器时,图像处理单元将第一图像重新编码为帧内帧,并将图像数据发送到除扬声器之外的会议终端,使得除扬声器之外的会议终端可以执行解码 内帧,从而清楚而平稳地执行扬声器切换。
    • 6. 发明授权
    • Mobile radiophone apparatus
    • 移动无线电话设备
    • US06198940B1
    • 2001-03-06
    • US09105467
    • 1998-06-26
    • Kouichi Matsumoto
    • Kouichi Matsumoto
    • H04Q720
    • H03M7/50
    • A mobile radiophone apparatus includes an A/D converter for outputting an input analogue voice signal as quantized data and a highly efficient voice encoder for extracting features of the quantized data output from the A/D converter and converting the data to codes of a smaller quantity by a fixed time unit. The number of quantization bits in the A/D converter is established to be larger than the number of quantization bits possible to be input to the highly efficient voice encoder. A bit-number converter is provided for converting the number of bits of the quantized data output at the A/D converter to the number of quantization bits possible to be input to the highly efficient voice encoder corresponding to a maximum amplitude value within the fixed time unit. the conversion parameter for the quantized data in the bit-number converter is transmitted in addition to the codes output at the highly efficient voice encoder.
    • 一种移动无线电电话设备包括用于输出作为量化数据的输入模拟语音信号的A / D转换器和用于提取从A / D转换器输出的量化数据的特征的高效语音编码器,并将该数据转换成较小量的代码 以固定的时间单位。 A / D转换器中的量化比特数被建立为比可能输入到高效语音编码器的量化比特数量大。 提供了一个位数转换器,用于将在A / D转换器输出的量化数据的位数转换为可能输入到与固定时间内的最大幅度值相对应的高效语音编码器的量化位数 单元。 除了在高效语音编码器输出的代码之外,还发送比特数转换器中的量化数据的转换参数。