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1. 发明授权

US5953049A Adaptive audio delay control for multimedia conferencing 失效
标题翻译：用于多媒体会议的自适应音频延迟控制
公开(公告)号：US5953049A
公开(公告)日：1999-09-14
申请号：US691737
申请日：1996-08-02
申请人： David N. Horn , Amir M. Mane , Pierre David Wellner
发明人： David N. Horn , Amir M. Mane , Pierre David Wellner
IPC分类号： H04N7/15 , H04N21/2368 , H04N21/434 , H04N7/14
CPC分类号： H04N21/2368 , H04N21/242 , H04N21/4307 , H04N21/4341 , H04N7/15
摘要： In an illustrative embodiment, an audio/video conferencing system comprises two or more audio/video terminals, in which the transmitted and/or received audio is automatically adjusted to provide synchronization between audio and video during periods of monologue (i.e., single talker active for significant duration). During interactive periods in which more than one talker is active, the audio delay is automatically adjusted to be less than the video delay, thus improving audio conference quality.
摘要翻译：在说明性实施例中，音频/视频会议系统包括两个或更多个音频/视频终端，其中发送和/或接收的音频被自动调整以在独白期间提供音频和视频之间的同步（即，对于显着持续时间）。在多个讲话者活动的交互期间，音频延迟自动调整为小于视频延迟，从而提高音频会议质量。

2. 发明授权

US4835737A Method and apparatus for controlled removal and insertion of circuit modules 失效
标题翻译：用于控制拆卸和插入电路模块的方法和装置
公开(公告)号：US4835737A
公开(公告)日：1989-05-30
申请号：US888498
申请日：1986-07-21
申请人： Hanz W. Herrig , David N. Horn , Daniel V. Peters , Randy D. Pfeifer , Wayne R. Wilcox
发明人： Hanz W. Herrig , David N. Horn , Daniel V. Peters , Randy D. Pfeifer , Wayne R. Wilcox
IPC分类号： G06F1/18 , G06F3/00 , G06F13/40 , H05K7/14
CPC分类号： H05K7/1414 , G06F13/4081
摘要： An electronic circuit board electrically connected to other circuits of a data processing system by means of a bus, may be removed and re-inserted in the system without the necessity of disabling other circuits connected to the bus. A latch actuated switch provides a control signal in anticipation of circuit board removal. The control signal activates a finite state machine which seizes control of the bus after completion of any current bus communications and stops the generation of clock pulses normally required in bus communications. When contact is physically broken between the board and its corresponding connector, the finite state machine restores the bus clock pulses and relinquishes control of the bus. When a board is to be inserted in an open connector, contact between the board and the connector is sensed by the finite state machine which causes the bus to be seized and the bus clock pulses to be temporarily inhibited. When the board is fully inserted, the finite state machine restores the bus clock pulses and relinquishes control of the bus.
摘要翻译：通过总线电连接到数据处理系统的其他电路的电子电路板可以被去除并重新插入系统中，而不需要禁用连接到总线的其他电路。闩锁致动开关提供控制信号，预期电路板移除。控制信号激活一个有限状态机，在完成任何当前的总线通信之后占用总线的控制，并停止在总线通信中通常需要的时钟脉冲的产生。当板与其相应的连接器之间的接触物理断开时，有限状态机恢复总线时钟脉冲并放弃总线的控制。当一个电路板插入一个开放的连接器时，板和连接器之间的接触由有限状态机检测到，这导致总线被占用，并且总线时钟脉冲被暂时禁止。当板完全插入时，有限状态机恢复总线时钟脉冲并放弃总线的控制。

3. 发明授权

US06178237B1 Teleconferencing audio bridge 失效
标题翻译：电话会议音频桥
公开(公告)号：US06178237B1
公开(公告)日：2001-01-23
申请号：US08997975
申请日：1997-12-24
申请人： David N. Horn
发明人： David N. Horn
IPC分类号： H04M356
CPC分类号： H04M3/564 , H04M3/40 , H04M3/56 , H04M3/567 , H04M3/568 , H04M2201/38
摘要： An arrangement for a teleconferencing bridge allows one or more users to control at least one characteristic of at least some of the input signals received by the bridge, such that the output signals received by each user in a teleconference is a user-controlled combination of all the input signals, including the changed input signals. The arrangement allows a rich set of audio bridging features to be provided cost-effectively. Those features include subconferencing, monitoring, whispering, muting, complex gain control, and pseudo stereo.
摘要翻译：用于电话会议桥的布置允许一个或多个用户控制由桥接收到的至少一些输入信号的至少一个特性，使得由电话会议中的每个用户接收的输出信号是用户控制的所有组合输入信号，包括改变的输入信号。该布置允许经济高效地提供丰富的音频桥接功能。这些功能包括子会议，监听，耳语，静音，复杂增益控制和伪立体声。

4. 发明授权

US4914653A Inter-processor communication protocol 失效
标题翻译：处理器间通信协议
公开(公告)号：US4914653A
公开(公告)日：1990-04-03
申请号：US941702
申请日：1986-12-22
申请人： Thomas P. Bishop , Mark H. Davis , David N. Horn , Grover T. Surratt , Lawrence A. Welsch
发明人： Thomas P. Bishop , Mark H. Davis , David N. Horn , Grover T. Surratt , Lawrence A. Welsch
IPC分类号： G06F15/16 , G06F9/46 , G06F11/14 , G06F13/00 , G06F13/374 , G06F13/42 , G06F15/177 , H04L12/56 , H04L29/00
CPC分类号： H04L49/901 , G06F13/374 , G06F13/4213 , G06F9/546 , H04L12/5693 , H04L29/00 , H04L47/6215 , H04L49/90 , H04L49/9078 , G06F11/14
摘要： Processors (101) of a multiprocessor system (FIG. 1) communicate across bus (150) via a low-latency packet protocol featuring per-logical channel input queues (143) and output queues (144), different per-processor priorities for sending data packets (FIG. 10) and data packet-acknowledging "quick" messages (FIG. 11), and separate buffers (923; 918) for receiving data packets and "quick" messages, respectively. Transmitted data packets afflicted by error, receive buffer overflow, and input queue-full conditions are discarded by the receiving processor and are retransmitted by the sending processor.

5. 发明授权

US06556670B1 Method for solving the music-on-hold problem in an audio conference 有权
标题翻译：在音频会议中解决音乐保持问题的方法
公开(公告)号：US06556670B1
公开(公告)日：2003-04-29
申请号：US09138001
申请日：1998-08-21
申请人： David N. Horn
发明人： David N. Horn
IPC分类号： H04M342
CPC分类号： H04M3/56 , H04M3/20 , H04M3/4285 , H04M2203/2088 , H04M2203/5027 , H04Q3/625
摘要： A solution to the music-on-hold problem associated with audio conference calls. The music on-hold-problem occurs when a conferee having music-on-hold puts the conference call on hold, resulting in a continuous stream of music being transmitted to the other conferees. Such a conferee is called an offending conferee. The solution presented herein is to prevent music-on-hold signals emanating from an offending conferee from being passed through an audio conference bridge to the other conferees. This is accomplished, in particular embodiments, by directing a merging/summing subsystem of the audio conference bridge to temporarily stop combining audio emanating from the offending conferee from being combined or merged onto audio channels through which the other conferees communicate on the audio conference. Once the music-on-hold is terminated, the offending conferee can rejoin conference call by sending a signal that directs the merging/summing subsystem to resume the combining of audio signals emanating from the offending conferee onto the audio channels of the other conferees.
摘要翻译：与音频电话会议相关的音乐保持问题的解决方案。音乐保持问题发生在具有保持音乐的与会者将会议电话保持为止时，导致连续的音乐流被传送给其他与会者。这样的和会者被称为违规同行。本文提出的解决方案是防止从违规与会者发出的音乐保持信号通过音频会议桥传递给其他与会者。这在特定实施例中通过引导音频会议桥的合并/求和子系统来暂时停止组合或合并来自违规参与者的音频而被合并到另一个与会者在音频会议上进行通信的音频频道上。一旦音乐保持终止，违规与会者可以通过发送指示合并/求和子系统的信号来重新加入会议呼叫，以恢复从违规与会者发出的音频信号到其他与会者的音频频道上的组合。

6. 发明授权

US5113431A Distributed control teleconferencing voice bridge 失效
标题翻译：分布式控制电话会议语音桥
公开(公告)号：US5113431A
公开(公告)日：1992-05-12
申请号：US429579
申请日：1989-10-31
申请人： David N. Horn
发明人： David N. Horn
IPC分类号： H04L12/18 , H04M3/56 , H04M11/00 , H04Q11/04
CPC分类号： H04Q11/04 , H04L12/1813 , H04M3/56
摘要： An arrangement for teleconferencing voice and data is provided through an arrangement that includes a voice bridge that offers individual control of the conferencing setup. The voice bridge comprises a crossbar with crosspoints that include a series connection of two switches and a resistor. One switch of each crosspoint is associated with the row of the crosspoint while the other switch of the crosspoint is associated with the column of the crosspoint. A user, connected to a selected row and column of the crossbar for the "talk" and "listen" functions, respectively, controls the row switches in the crosspoints connected to the user's row and the column switches in the crosspoints connected to the user's column.
摘要翻译：通过包括提供对会议设置的单独控制的语音桥的布置来提供用于电话会议语音和数据的装置。语音桥包括具有交叉点的交叉开关，其包括两个开关和电阻器的串联连接。每个交叉点的一个开关与交叉点的行相关联，而交叉点的另一个开关与交叉点的列相关联。连接到交叉开关的选定行和列的用户分别用于“通话”和“监听”功能，控制连接到用户行的交叉点中的行开关和连接到用户列的交叉点中的列切换。

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