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1. 发明授权

US07471621B2 Method and apparatus for dynamic adjustment of orthogonal frequency-division multiplexing during congested conditions 有权
标题翻译：在拥塞条件下正交频分复用的动态调整方法和装置
公开(公告)号：US07471621B2
公开(公告)日：2008-12-30
申请号：US11399630
申请日：2006-04-06
申请人： David T. Chen , Kadathur S. Natarajan , Ivan N. Vukovic
发明人： David T. Chen , Kadathur S. Natarajan , Ivan N. Vukovic
IPC分类号： H04J11/00
CPC分类号： H04W16/10 , H04W72/0426
摘要： A base station has a transmission element to wirelessly transmit at least one data frame. The at least one data frame has a predetermined uplink allocation and a predetermined downlink allocation. A detection element detects a congestion condition. When the congestion condition is detected, the transmission element transmits a request to at least one neighboring base station for an expansion of the predetermined uplink allocation or the predetermined downlink allocation. A reception element receives a signal from the at least one neighboring base station. A processing element expand the one of the predetermined uplink allocation or the predetermined downlink allocation by a specified amount in response to the signal indicating the specified amount for a mutually agreed time, or number of symbols or frames.
摘要翻译：基站具有无线发送至少一个数据帧的传输元件。所述至少一个数据帧具有预定的上行链路分配和预定的下行链路分配。检测元件检测到拥塞状况。当检测到拥塞状况时，传输单元向至少一个相邻基站发送用于扩展预定上行链路分配或预定下行链路分配的请求。接收元件从至少一个相邻基站接收信号。响应于表示相互同意的时间或符号或帧数的指定量的信号，处理元件将预定上行链路分配或预定下行链路分配中的一个扩展指定量。

2. 发明申请

US20080285473A1 ACCESS AND BACKHAUL FRAME INTERLACING FROM TIME DIVISION DUPLEX WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：来自时分双工无线通信系统的访问和后台帧
公开(公告)号：US20080285473A1
公开(公告)日：2008-11-20
申请号：US11747939
申请日：2007-05-14
申请人： David T. Chen , Philip J. Fleming , Fan Wang
发明人： David T. Chen , Philip J. Fleming , Fan Wang
IPC分类号： H04J3/14
CPC分类号： H04B7/2656
摘要： A method, base station, and wireless communications system for interlacing Access and Backhaul frames in a Time Division Duplex wireless communication system. The method includes monitoring Access traffic and Backhaul traffic (604). Access traffic characteristics, Backhaul traffic characteristics, and corresponding frame control overhead information are determined in response to the monitoring (606). The method also includes determining an amount of time required to deliver a substantially equal amount of bearer Access traffic and Backhaul traffic (608). A frame interlacing ration is determined (608) in response to determining the amount of time required to deliver a substantially equal amount of bearer Access traffic and Backhaul traffic. A set of Access frames (302) and a set of Backhaul frames (304) are interlaced on a frequency band using the determined frame interlacing ratio.
摘要翻译：一种用于在时分双工无线通信系统中交织接入和回程帧的方法，基站和无线通信系统。该方法包括监视访问流量和回程流量（604）。响应于监视（606）确定接入业务特性，回程业务特性和相应的帧控制开销信息。该方法还包括确定递送基本相等量的承载接入业务和回程业务所需的时间量（608）。响应于确定递送基本相等数量的承载接入业务和回程业务所需的时间量，确定帧隔行比（608）。一组接入帧（302）和一组回程帧（304）在使用所确定的帧交织比的频带上隔行扫描。

3. 发明授权

US5825908A Anatomical visualization and measurement system 失效
标题翻译：解剖可视化和测量系统
公开(公告)号：US5825908A
公开(公告)日：1998-10-20
申请号：US581055
申请日：1995-12-29
申请人： Steven D. Pieper , Michael A. McKenna , David T. Chen
发明人： Steven D. Pieper , Michael A. McKenna , David T. Chen
IPC分类号： G06T7/60
CPC分类号： G06T7/606 , G06T7/602 , G06T2207/30004
摘要： The present invention provides an anatomical visualization and measurement system including a first database of 2-D slice images and a second database including a 3-D computer model defining a first software object. Apparatus is provided for selecting a 2-D slice image from the first database. Apparatus is also provided for inserting a second software object into the 3-D computer model. The second software object includes a planar surface and is inserted into the 3-D computer model at the position which corresponds to the position of the selected 2-D slice image relative to the scanned structure. Apparatus is also provided for texture mapping the 2-D slice image onto the planar surface. Display apparatus is provided for displaying an image which simultaneously provides a view of the first software object and the 2-D slice image texture mapped onto the planar surface. An apparatus and method are also provided for determining structural dimensions and volumes using appropriate scanned 2-D slice image information. The present invention permits an appropriate set of scanned 2-D images to be assembled into a 3-D database, information regarding selected structural features to be segmented out of the 3-D database, and measurements to be made based on these structural features. In addition, the present invention permits a set of oblique images to be generated based on these structural features, which oblique images may themselves be used for measurement purposes.
摘要翻译：本发明提供一种解剖学可视化和测量系统，其包括2-D切片图像的第一数据库和包括定义第一软件对象的3-D计算机模型的第二数据库。提供了用于从第一数据库中选择2-D切片图像的装置。还提供了用于将第二软件对象插入到三维计算机模型中的装置。第二软件对象包括平面，并且在与所选择的2-D切片图像相对于扫描结构的位置对应的位置插入到3D计算机模型中。还提供了用于将2D图像图像纹理映射到平面表面上的装置。提供显示装置，用于显示同时提供映射到平面上的第一软件对象和二维切片图像纹理的图像的图像。还提供了一种用于使用适当的扫描的2-D切片图像信息来确定结构尺寸和体积的装置和方法。本发明允许将适当的扫描的2-D图像组合成3-D数据库，关于要从3-D数据库中分割的所选择的结构特征的信息，以及基于这些结构特征进行的测量。此外，本发明允许基于这些结构特征产生一组倾斜图像，这些倾斜图像本身可以用于测量目的。

4. 发明申请

US20120219698A1 Fabrication of Non-Homogeneous Articles Via Additive Manufacturing Using Three-Dimensional Voxel-Based Models 有权
标题翻译：通过使用三维体素模型的添加制造制造非均匀制品
公开(公告)号：US20120219698A1
公开(公告)日：2012-08-30
申请号：US13462503
申请日：2012-05-02
申请人： Robert Steingart , David T. Chen
发明人： Robert Steingart , David T. Chen
IPC分类号： A61C13/00 , B05D1/36
CPC分类号： A61C13/0019 , B33Y30/00 , B33Y50/00 , B33Y80/00
摘要： The invention provides systems and methods for manufacture of a non-homogeneous article using a 3D voxel-based model of the article and a rapid prototyping device. Use of a voxel-based model provides processing advantages and offers improved realism of the manufactured object with regard to non-homogeneous (i) color, (ii) translucency, and/or (iii) hardness, for example.
摘要翻译：本发明提供了使用基于3D体素的文章模型和快速原型设备来制造非均匀制品的系统和方法。使用基于体素的模型提供加工优点，并且例如提供对非均匀（i）颜色，（ii）半透明度和/或（iii）硬度）的制造对象的改进的现实性。

5. 发明申请

US20120179281A1 SYSTEMS FOR DENTURE PREPARATION 审中-公开
标题翻译：牙齿准备系统
公开(公告)号：US20120179281A1
公开(公告)日：2012-07-12
申请号：US13208987
申请日：2011-08-12
申请人： Robert Steingart , Yakov Epelbaum , Larry Bodony , David T. Chen , John Orfanidis , Russell Giordano, II , Alain D. Carballeyra , Peter Waksman
发明人： Robert Steingart , Yakov Epelbaum , Larry Bodony , David T. Chen , John Orfanidis , Russell Giordano, II , Alain D. Carballeyra , Peter Waksman
IPC分类号： G06G7/60 , G06F19/00
CPC分类号： A61C13/0004 , A61C5/77 , A61C13/01 , A61C13/10 , G06F17/50
摘要： Embodiments of the invention generally relate to systems and methods for designing and manufacturing dentures. More particularly, in certain embodiments, the invention relates to a system for preparing a denture base plate. The system includes a user interface and a design application for creating a virtual model, and a manufacturing apparatus for fabricating a denture base plate corresponding to the virtual model. In other embodiments, an apparatus is provided that includes a graphical interface and a design application for selecting a set of virtual denture teeth and placing and adjusting the virtual denture teeth in relation to each other and a virtual denture base plate.
摘要翻译：本发明的实施例一般涉及用于设计和制造假牙的系统和方法。更具体地，在某些实施例中，本发明涉及一种用于制备假牙基板的系统。该系统包括用于创建虚拟模型的用户界面和设计应用程序，以及用于制造对应于虚拟模型的义齿底板的制造装置。在其他实施例中，提供了一种装置，其包括图形界面和设计应用程序，用于选择一组虚拟假牙，以及相对于彼此放置和调整虚拟假牙，以及虚拟假牙基板。

6. 发明申请

US20080260224A1 Using statistical process control (SPC) to demonstrate solution convergence in a technician guided segmentation system 有权
标题翻译：使用统计过程控制（SPC）来展示技术人员引导分割系统中的解决方案融合
公开(公告)号：US20080260224A1
公开(公告)日：2008-10-23
申请号：US12074546
申请日：2008-03-04
申请人： David T. Chen , M. Weston Chapman , Haoning Fu
发明人： David T. Chen , M. Weston Chapman , Haoning Fu
IPC分类号： G06K9/00 , G06K9/34
CPC分类号： G06T7/0012 , G06T7/11 , G06T7/143 , G06T7/155 , G06T7/174 , G06T7/62 , G06T2207/10072 , G06T2207/20092 , G06T2207/20096 , G06T2207/20152 , G06T2207/30004 , G06T2207/30101 , G06T2210/41
摘要： A method and apparatus for generating a computer model from scan data from a patient, comprising: (1) acquiring the scan data from the patient; (2) selecting a plurality of key frames from the scan data; (3) hand segmenting the selected key frames, whereby to identify specific anatomical structures; (4) automatically generating segmented intervening frames for the regions between the key frames using an interpolation process; (5) merging the automatically segmented intervening frames with the hand segmented key frames so as to generate a complete set of segmented frames; (6) obtaining a first measurement of a selected feature of the complete set of segmented frames; (7) hand segmenting at least one additional key frame and replacing a corresponding intervening frame with said one additional key frame within the complete set of segmented frames; (8) re-interpolating the set of segmented frames based upon the updated set of key frames; (9) obtaining a second measurement of the selected feature of the re-computed set of segmented frames; (10) comparing said second measurement with said first measurement; and (11) if the second measurement differs from the first measurement by a statistically significant amount, replacing the first measurement with the second measurement and repeating the process from Step 7.
摘要翻译：一种用于从患者的扫描数据生成计算机模型的方法和装置，包括：（1）从患者获取扫描数据; （2）从扫描数据中选择多个关键帧; （3）手动分割所选择的关键帧，由此识别特定的解剖结构; （4）使用内插处理自动生成关键帧之间的区域的分段中间帧; （5）将自动分段的中间帧与手分割关键帧合并，生成一组完整的分段帧; （6）获得整个分段帧的所选特征的第一测量; （7）手工分割至少一个附加的关键帧，并且在完整的分段帧集合内用所述一个附加关键帧替换相应的中间帧; （8）基于更新的关键帧集合重新插值所述分组帧集合; （9）获得重新计算的分段帧集合的所选特征的第二测量; （10）将所述第二测量与所述第一测量进行比较; 和（11）如果第二测量与第一测量不同于统计学显着的量，则用第二测量代替第一测量并重复步骤7的处理。

7. 发明授权

US06675032B2 Video-based surgical targeting system 有权
公开(公告)号：US06675032B2
公开(公告)日：2004-01-06
申请号：US09746992
申请日：2000-12-21
申请人： David T. Chen , Steven D. Pieper , Michael A. McKenna
发明人： David T. Chen , Steven D. Pieper , Michael A. McKenna
IPC分类号： A61B505
CPC分类号： G09B23/28 , A61B34/20 , A61B34/25 , A61B90/36 , A61B90/361 , A61B2034/102 , A61B2034/105 , A61B2034/2055 , A61B2090/364 , A61B2090/365 , A61B2090/367 , Y10S128/92 , Y10S128/922
摘要： A video-based surgical targeting system for targeting anatomical structures within a patient.

8. 发明授权

US5547455A Electronically steerable endoscope 失效
标题翻译：电子导向内窥镜
公开(公告)号：US5547455A
公开(公告)日：1996-08-20
申请号：US220367
申请日：1994-03-30
申请人： Michael A. McKenna , Joseph M. Rosen , David T. Chen , Steven D. Pieper , Peter J. Robbie
发明人： Michael A. McKenna , Joseph M. Rosen , David T. Chen , Steven D. Pieper , Peter J. Robbie
IPC分类号： A61B1/05 , A61B8/12 , H04N5/225
CPC分类号： A61B1/00181 , A61B1/0005 , A61B1/00096 , A61B1/05 , A61B8/5238 , H04N5/2253 , A61B8/12 , H04N2005/2255
摘要： A multiple view endoscope for providing "on command" images of a plurality of different fields of view surrounding the distal end of the endoscope without having to move the endoscope from an initially established position in order to access the different fields of view. A multiplicity of image capturing means are disposed in an array on the distal end to permit the operator to select and view either any one of, or any combination of, the multiple views provided by the multiplicity of image capturing means.
摘要翻译：一种多视图内窥镜，用于提供围绕内窥镜的远端的多个不同视场的“开启命令”图像，而不必将内窥镜从最初建立的位置移动，以便进入不同的视场。多个图像捕获装置被设置在远端的阵列中，以允许操作者选择和查看由多个图像捕获装置提供的多个视图中的任何一个或任何组合。

9. 发明授权

US5545120A Endoscopic viewing system for maintaining a surgeon's normal sense of kinesthesia during endoscopic surgery regardless of the orientation of the endoscope vis-a-vis the surgeon 失效
标题翻译：内镜观察系统，用于在内窥镜手术中维持外科医生的正常运动感觉，无论内窥镜相对于外科医生的方向如何
公开(公告)号：US5545120A
公开(公告)日：1996-08-13
申请号：US374126
申请日：1995-01-18
申请人： David T. Chen , Steven D. Pieper , Michael McKenna
发明人： David T. Chen , Steven D. Pieper , Michael McKenna
IPC分类号： A61B17/00 , H04N5/225 , H04N7/18 , A61B1/04 , H04N9/74
CPC分类号： A61B17/00234 , H04N7/183 , H04N2005/2255 , Y10S600/921
摘要： An endoscopic viewing system for maintaining a surgeon's normal sense of kinesthesia during endoscopic surgery regardless of the orientation of the endoscope vis-a-vis the surgeon.
摘要翻译：一种内窥镜观察系统，用于在内窥镜手术期间维持外科医生的正常感觉感觉，而不管内窥镜相对于外科医生的取向如何。

10. 发明申请

US20100122336A1 METHOD AND APPARATUS FOR TWO-WAY TRANSMISSION OF MEDICAL DATA 审中-公开
标题翻译：用于医疗数据两路传输的方法和装置
公开(公告)号：US20100122336A1
公开(公告)日：2010-05-13
申请号：US12271636
申请日：2008-11-14
申请人： Elias Hunt , David T. Chen , M. Weston Chapman
发明人： Elias Hunt , David T. Chen , M. Weston Chapman
IPC分类号： H04L9/00 , H04L9/32 , G06F15/16
CPC分类号： H04L67/26 , H04L63/029 , H04L63/0428 , H04L67/12
摘要： The present invention provides for a secure, two-way transmission of medical data over the Internet and through the hospital's firewall using push and pull mechanisms. More particularly, the present invention utilizes standard SSH technology and the rsync and scp protocols to enable secure, cost-effective data transmission over the Internet. The hospital firewall is traversed through the use of an agent located behind the hospital's firewall. The agent utilizes a push mechanism to push the raw scan data through the firewall and over the Internet to the outside third party; and the agent uses a pull mechanism to reach through the firewall and over the Internet to retrieve the data processed by the outside third party. In other words, the present invention transfers data from the hospital to the third party by initiating a data push mechanism from behind the hospital firewall; and transfers the processed data from the outside third party back into the hospital by initiating a data pull mechanism from behind the hospital firewall. The aforementioned agent acts as a broker for the foregoing data transmission and also encodes how the data should be handled once it is received on the hospital side.
摘要翻译：本发明提供了通过互联网和通过医院的防火墙使用推拉机制的医疗数据的安全双向传输。更具体地说，本发明利用标准的SSH技术和rsync和scp协议来实现通过因特网进行安全，成本有效的数据传输。医院防火墙通过使用位于医院防火墙后面的代理进行穿越。代理利用推送机制将原始扫描数据通过防火墙和互联网推送到外部第三方; 代理使用拉动机制通过防火墙和Internet通过外部第三方处理的数据。换句话说，本发明通过从医院防火墙后面启动数据推送机制，将数据从医院传送到第三方; 并通过从医院防火墙后面启动数据拉动机制将处理后的数据从外部第三方传送回医院。上述代理人作为前述数据传输的代理人，并且还编码在医院侧接收数据之后如何处理数据。

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