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1. 发明授权

US4696031A Signal detection and discrimination using waveform peak factor 失效
标题翻译：使用波形峰值因子的信号检测和鉴别
公开(公告)号：US4696031A
公开(公告)日：1987-09-22
申请号：US815424
申请日：1985-12-31
申请人： Richard L. Freudberg , Marshall B. Garrison
发明人： Richard L. Freudberg , Marshall B. Garrison
IPC分类号： H04M1/26 , H04M1/00 , H04M1/27 , H04M11/00 , H04Q1/448 , H04Q1/457 , H04M3/22
CPC分类号： H04Q1/448 , H04Q1/457
摘要： Apparatus and method for detecting and discriminating among various signals indicative of progress while making a telephone connection. A particular waveform parameter known as peak factor is advantageously employed in a call progress analyzer. The illustrative call progress analyzer uses the average magnitude peak factor (ratio of the peak of the waveform to the average of the absolute value of the waveform) to distinguish among single-tone signals (e.g., special service information tones), double-tone signals (e.g., dial tone, audible ring, and busy), and speech. Waveform ON and OFF times (duration above and below an energy threshold) are combined with signal-type determinations (made using peak factor) to automatically determine the status of a call.
摘要翻译：用于在进行电话连接时检测和区分指示进度的各种信号的装置和方法。在呼叫进程分析器中有利地采用称为峰值因子的特定波形参数。说明性呼叫进程分析器使用平均幅度峰值因子（波形的峰值与波形的绝对值的平均值的比）来区分单音信号（例如，特殊服务信息音调），双音信号（例如拨号音，听筒和忙音）和演讲。波形ON和OFF时间（持续时间高于和低于能量阈值）与信号类型确定（使用峰值因子进行组合）以自动确定呼叫的状态。

2. 发明授权

US5841763A Audio-video conferencing system 失效
标题翻译：音视频会议系统
公开(公告)号：US5841763A
公开(公告)日：1998-11-24
申请号：US489742
申请日：1995-06-13
申请人： Arthur P. Leondires , Bruce S. Allen , Marshall B. Garrison , Philip J. Baun, Jr.
发明人： Arthur P. Leondires , Bruce S. Allen , Marshall B. Garrison , Philip J. Baun, Jr.
IPC分类号： H04J3/00 , H04M3/56 , H04N7/15 , H04L12/16 , H04Q11/00
CPC分类号： H04M3/563 , H04M3/56 , H04N7/15 , H04M3/42161
摘要： A processor unit for a multipoint audio-video conferencing system, wherein the processor unit includes a host processor for controlling operation of the audio-video conferencing system. Controlling operation includes controlling the performance of a plurality of functions associated with servicing each of a plurality of communications connections, each of the connections being between a conferee terminal and the audio-video conferencing system. The processor unit also includes a plurality of digital signal processors, in communication with each other over a first bus and in communication with and controlled by the host processor over a second bus. Each digital signal processor includes an associated configuration element for adaptively configuring a selected digital signal processor to perform processing required by a selected one of the functions associated with servicing a selected one of the communications connections. The processing required by the conferencing functions is distributed between the plurality of digital signal processors.
摘要翻译：一种用于多点音频 - 视频会议系统的处理器单元，其中所述处理器单元包括用于控制所述音频 - 视频会议系统的操作的主机处理器。控制操作包括控制与维护多个通信连接中的每一个相关联的多个功能的性能，每个连接位于与会者终端和音频 - 视频会议系统之间。处理器单元还包括多个数字信号处理器，其通过第一总线彼此通信并且通过第二总线与主处理器通信并由主机处理器控制。每个数字信号处理器包括相关联的配置元件，用于自适应地配置所选择的数字信号处理器以执行与服务所选择的一个通信连接相关联的所选功能所需的处理。会议功能所需的处理分布在多个数字信号处理器之间。

3. 发明授权

US5495522A Method and apparatus for audio teleconferencing a plurality of phone channels 失效
标题翻译：音频电话会议多个电话频道的方法和装置
公开(公告)号：US5495522A
公开(公告)日：1996-02-27
申请号：US335270
申请日：1994-11-07
申请人： Bruce S. Allen , Marshall B. Garrison , Philip S. Brodsky , Richard LeBlanc , Philip J. Baun, Jr. , Gary R. McCarthy , Arthur P. Leondires
发明人： Bruce S. Allen , Marshall B. Garrison , Philip S. Brodsky , Richard LeBlanc , Philip J. Baun, Jr. , Gary R. McCarthy , Arthur P. Leondires
IPC分类号： H04M3/42 , H04M3/487 , H04M3/51 , H04M3/53 , H04M3/56
CPC分类号： H04M3/56 , H04M2201/38 , H04M3/42221 , H04M3/42365 , H04M3/487 , H04M3/51 , H04M3/53 , H04M3/568
摘要： An improved system for connecting and processing a plurality of phone user in a teleconference on a common digital bus. The apparatus includes a plurality of digital processing units (DSPs) associated with selective phone lines and in communication with each other. Each DSP determines an activity status for each associated phone line and transmits that status to the other DSPs, The DSPs create and update respective identical "talk-lists" which reflect the active conferees whose voice data is currently being output on the phone channels. The system thus provides scaleable teleconferencing in a real-time configuration without switching between the various signals on the common bus such that each incoming caller or even a plurality of conferences has equal priority.
摘要翻译：一种用于在公共数字总线上的电话会议中连接和处理多个电话用户的改进的系统。该装置包括与选择性电话线相关联并彼此通信的多个数字处理单元（DSP）。每个DSP确定每个相关联的电话线的活动状态，并将该状态发送到其他DSP。DSP创建并更新各自相同的“通话列表”，其反映其电话频道上当前正在其语音数据输出的活动参与者。因此，该系统在实时配置中提供可扩展的电话会议，而不在公共总线上的各种信号之间切换，使得每个来电者或甚至多个会议具有相同的优先级。

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