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1. 发明授权

US07782940B2 Methods for encoding or decoding in a videoconference system to reduce problems associated with noisy image acquisition 有权
标题翻译：在视频会议系统中进行编码或解码的方法，以减少与噪声图像采集相关的问题
公开(公告)号：US07782940B2
公开(公告)日：2010-08-24
申请号：US10633137
申请日：2003-08-01
申请人： Mohammad Athar Shah , Michael J. Horowitz
发明人： Mohammad Athar Shah , Michael J. Horowitz
IPC分类号： H04N7/18
CPC分类号： H04N7/15 , H04N19/105 , H04N19/132 , H04N19/134 , H04N19/136 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/198 , H04N19/507 , H04N19/587 , H04N19/61
摘要： Disclosed herein in one embodiment is an adaptive coding threshold algorithm for a videoconference system which alleviates problems due to the erroneous recoding of stationary areas of images caused by image noise. The algorithm, which is preferably implementable on a videoconference encoder, assesses the coding parameters for a current macroblock and the coding parameters for that same macroblock the last time it was coded. If for both macroblocks the coding was non-intra, with a [0,0] motion vector, and with a low quantization parameter, a determination is made that the current macroblock depicts a stationary image. Accordingly, the algorithm increases the coding threshold (T1) for the blocks within that macroblock, so that it becomes more difficult for those particular blocks to be recoded. This renders the block with stationary content less susceptible to erroneous recoding, while preserving system bandwidth and improving image quality. Additionally, related noise assessment techniques can be employed at the encoder or decoder without the adjustment of the coding threshold T1.
摘要翻译：这里在一个实施例中公开了一种用于视频会议系统的自适应编码阈值算法，其减轻了由图像噪声引起的图像的静止区域的错误重新编码的问题。优选地在视频会议编码器上可实现的算法评估当前宏块的编码参数以及上次编码时相同宏块的编码参数。如果对于两个宏块，编码是非内部的，具有[0,0]运动矢量，并且在低量化参数下，确定当前宏块描绘静止图像。因此，该算法增加了该宏块内的块的编码阈值（T1），使得这些特定块变得更加难以重新编码。这使得具有固定内容的块不太容易被错误的重新编码，同时保持系统带宽并提高图像质量。此外，相关的噪声评估技术可以在编码器或解码器处采用，而不需要调整编码阈值T1。

2. 发明授权

US08004575B2 Methods and systems for detecting bright objects and/or adaptively modifying video camera exposure 有权
标题翻译：用于检测亮物体和/或自适应地修改摄像机曝光的方法和系统
公开(公告)号：US08004575B2
公开(公告)日：2011-08-23
申请号：US11416786
申请日：2006-05-03
申请人： Joseph M. Justiss , Michael J. Horowitz
发明人： Joseph M. Justiss , Michael J. Horowitz
IPC分类号： H04N5/228
CPC分类号： H04N5/2351
摘要： Methods and systems for automatically detecting the presence or absence of a bright object in the field of view of a video camera and/or for adaptively modifying video camera exposure level. A video camera system may be configured to enter and exit an adaptive exposure modification mode upon detection of the presence of a bright object in the field of view of a video camera.
摘要翻译：用于在视频摄像机的视野中自动检测亮物体的存在或不存在的方法和系统和/或用于自适应地修改摄像机曝光水平的方法和系统。摄像机系统可以被配置为在检测到摄像机的视野中的亮物体的存在时进入和退出自适应曝光修改模式。

3. 发明授权

US5495528A Digital telephone control interface system 失效
标题翻译：数字电话控制接口系统
公开(公告)号：US5495528A
公开(公告)日：1996-02-27
申请号：US348287
申请日：1994-11-30
申请人： Tave P. Dunn , Elie A. Jreij , Jack D. Collins , Michael J. Horowitz
发明人： Tave P. Dunn , Elie A. Jreij , Jack D. Collins , Michael J. Horowitz
IPC分类号： H04M1/247 , H04M1/253 , H04M1/00
CPC分类号： H04M1/2473 , H04M1/253 , Y10S379/915
摘要： The present invention is a digital telephone control interface system that provides a programmable control to the keys of a digital feature telephone. The programmable control selectively masks the keys present on a telephone and prevents masked keys from being directly responded to by the telephone or routed to the telephone switching network. While the keys are masked, the programmable control can suppress, delay, modify or enhance the key events produced by the masked keys as directed by the application software being run by the programmable control.
摘要翻译：本发明是一种数字电话控制接口系统，其向数字电话机的键提供可编程控制。可编程控制器选择性地屏蔽存在于电话上的键，并防止屏蔽的键被电话直接响应或路由到电话交换网络。当密钥被屏蔽时，可编程控制可以按照由可编程控制器运行的应用软件的指示来抑制，延迟，修改或增强由掩蔽密钥产生的密钥事件。

4. 发明授权

US5581608A Method and apparatus for masking the reporting of network telephony events to a computer 失效
标题翻译：用于屏蔽向计算机报告网络电话事件的方法和装置
公开(公告)号：US5581608A
公开(公告)日：1996-12-03
申请号：US405614
申请日：1995-03-15
申请人： Elie A. Jreij , Tave P. Dunn , Michael J. Horowitz , Peter E. Gersing , Robert D. Whittington , Werner Huber
发明人： Elie A. Jreij , Tave P. Dunn , Michael J. Horowitz , Peter E. Gersing , Robert D. Whittington , Werner Huber
IPC分类号： H04Q11/04 , H04M1/00
CPC分类号： H04Q11/0457 , H04Q2213/056 , H04Q2213/093 , H04Q2213/107 , H04Q2213/176 , H04Q2213/216
摘要： A method apparatus for selectively passing various types of telephony information between a data communications port on a digital telephone and a computer run application program. In one embodiment, the application program can select a subset of telephony events by way of a telephony command to the telephone's data communication port. This command is processed by a telephony command processor within the data communications controller which, in turn, sets a programmable event mask within the telephone. In response to the event mask being set, only the selected telephony events are spontaneously reported to the host computer and application program.
摘要翻译：一种用于在数字电话上的数据通信端口和计算机运行应用程序之间选择性地传送各种类型的电话信息的方法装置。在一个实施例中，应用程序可以通过电话命令对电话的数据通信端口选择电话事件的子集。该命令由数据通信控制器内的电话命令处理器处理，而该电话命令处理器又在电话机内设置可编程事件掩码。响应于设置事件掩码，仅将所选择的电话事件自发地报告给主计算机和应用程序。

5. 发明授权

US07885535B2 Methods and systems for estimation of visible light amount in a light source 有权
标题翻译：用于估计光源中可见光量的方法和系统
公开(公告)号：US07885535B2
公开(公告)日：2011-02-08
申请号：US11416787
申请日：2006-05-03
申请人： Michael J. Horowitz , Joseph M. Justiss
发明人： Michael J. Horowitz , Joseph M. Justiss
IPC分类号： G03B7/26 , G03B7/099
CPC分类号： G03B7/099 , G01J1/0492 , G01J1/4228 , G01J1/4257 , H04N5/2254 , H04N5/238 , H04N9/045
摘要： Methods and systems for estimating the amount of visible light in a light source using an image sensor, e.g., such as an image sensor of the type commonly found in color video cameras. The methods and systems may be implemented to use information about the normalized differences of three color components contained in a light source in conjunction with a measure of total light energy of the light source in order to estimate the amount of visible light present in light received by the image sensor from a light source.
摘要翻译：用于使用图像传感器估计光源中的可见光量的方法和系统，例如通常在彩色摄像机中发现的类型的图像传感器。该方法和系统可以被实现为使用包含在光源中的三个颜色分量的归一化差异的信息结合光源的总光能的量度来估计由光接收的光中存在的可见光的量来自光源的图像传感器。

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