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11. 发明授权

US06259252B1 Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles 失效
标题翻译：用于MRI的层叠瓦片极片，制造极片的方法和模具接合极片瓦片
公开(公告)号：US06259252B1
公开(公告)日：2001-07-10
申请号：US09198507
申请日：1998-11-24
申请人： Evangelos T. Laskaris , William D. Barber , Johannes M van Oort , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
发明人： Evangelos T. Laskaris , William D. Barber , Johannes M van Oort , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
IPC分类号： G01V300
CPC分类号： H01F7/0278 , G01R33/383 , Y10S29/001 , Y10T29/4902 , Y10T29/49075 , Y10T29/49078
摘要： A laminate tile pole piece for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
摘要翻译：用于MRI的层压瓦片极片。每个层压砖具有梯形或环形扇形。梯形形状允许瓦片并排连接以形成多个同心环形阵列极片，而不使用填充具有方形瓦片的圆形极片所需的奇怪形状的边缘填充瓦。极片通过将多个瓦片放置在模具中并用粘合剂物质填充模具来制造，以将多个瓦片粘合成整体瓦片体。然后将单一瓦片体从模具中取出并附接到极片基座以形成极片。模腔表面优选具有不均匀的轮廓。整体瓦片体的底面形成模腔表面轮廓的基本上相反的轮廓。

12. 发明授权

US4680551A Method for homogenizing a static magnetic field over an arbitrary volume 失效
标题翻译：在任意体积上均匀化静磁场的方法
公开(公告)号：US4680551A
公开(公告)日：1987-07-14
申请号：US785140
申请日：1985-10-07
申请人： Matthew O'Donnell , Steven G. Karr , William D. Barber , Jish M. Wang , William A. Edelstein
发明人： Matthew O'Donnell , Steven G. Karr , William D. Barber , Jish M. Wang , William A. Edelstein
IPC分类号： A61B5/055 , A61B10/00 , G01R33/20 , G01R33/24 , G01R33/3875 , H01F7/20
CPC分类号： G01R33/3875 , G01R33/24
摘要： A method for minimizing the inhomogeneity of a static magnetic field, produced by a main magnet, over a selected arbitrary volume, by operation of a plurality N of shimming coils each independently producing an associated shimming magnetic field having an associated inhomogeneity which is a function of spatial location over that same volume, uses the steps of: measuring the magnitude of the main magnet field, in the absence of all shimming fields, at a plurality of locations X.sub.i upon the surface of an imaginary sphere enclosing the arbitrary volume; measuring the polarity and magnitude of each of the N shimming fields, with respect to the polarity and magnitude of a D.C. current flowing through the associated shimming coil, at the same plurality of locations X.sub.i upon the imaginary sphere surface; determining the weighted mean-square variation of the total field at each of another plurality of points Y.sub.i within the volume of said imaginary sphere; and (d) selecting the current magnitudes and polarities for each of the N shimming coils to provide each of the N associated shimming fields with magnitude and polarity to minimize the inhomogeneity of the main magnetic field in the arbitrary volume. The set of weighting coefficients may be selected to all be equal, or to emphasize at least one desired region of the arbitrary volume.
摘要翻译：一种用于通过操作多个N个匀场线圈来最小化由主磁体产生的静磁场在选定的任意体积上的不均匀性的方法，每个独立地产生相关联的匀场磁场，其具有相关的不均匀性，该相关的不均匀性是在相同体积上的空间位置使用以下步骤：在包围任意体积的虚拟球体的表面上的多个位置Xi处，在没有所有匀场的情况下测量主磁场的大小; 相对于流过相关联的调色线圈的直流电流的极性和幅度，在虚拟球体表面上相同的多个位置Xi处，测量每个N个匀场的每个的极性和幅度; 确定所述虚拟球体积内的另一多个点Yi中的每个点处的总场的加权均方差; 并且（d）为N个匀场线圈中的每一个选择当前幅度和极性，以提供N个相关联的匀场中的每一个具有大小和极性以最小化任意体积中的主磁场的不均匀性。加权系数集合可以被选择为全部相等，或者强调任意卷的至少一个期望区域。

13. 发明授权

US4339745A Optical character recognition 失效
标题翻译：光学字符识别
公开(公告)号：US4339745A
公开(公告)日：1982-07-13
申请号：US149841
申请日：1980-05-14
申请人： William D. Barber , Thomas M. Cipolla , Joseph L. Mundy
发明人： William D. Barber , Thomas M. Cipolla , Joseph L. Mundy
IPC分类号： G06K7/10 , G06K9/20 , H04N7/18 , G06K9/28
CPC分类号： G06K7/10851 , G06K9/2036
摘要： High contrast image data is acquired from metal and other hard surfaces with varying roughness and reflectivity on which characters are impressed by vibrapeening or laser marking. The optical scanner applies normal illumination and a linear photodiode array detects light reflected normal to the surface and within a narrow acceptance angle, so that characters appear dark and the background light. The detector signal is preprocessed to remove nonuniform background variations and yield image data which can be fed to conventional character recognition equipment.
摘要翻译：从金属和其他硬表面获得高对比度图像数据，其具有不同的粗糙度和反射率，通过振动打印或激光打标印刷字符。光学扫描器应用普通照明，线性光电二极管阵列检测光线正反射到窄的接受角度，使字符看起来暗，背景光。检测器信号被预处理以去除不均匀的背景变化并产生可以馈送到常规字符识别设备的图像数据。

14. 发明授权

US4212082A Method for fabrication of improved storage target and target produced thereby 失效
标题翻译：制造改进的存储目标和由此产生的目标的方法
公开(公告)号：US4212082A
公开(公告)日：1980-07-08
申请号：US898620
申请日：1978-04-21
申请人： William D. Barber , George E. Possin
发明人： William D. Barber , George E. Possin
IPC分类号： G11C11/23 , G11C13/02 , C25D11/32
CPC分类号： G11C11/23
摘要： An improved target for storage of electric charge, in an electron beam addressable memory, utilizes an anodic oxide grown upon a semiconductor layer, forming part of a semiconductor diode structure. The anodic oxide is overlayed with a planar film of conductive material and the target structure is scanned with an electron beam for writing of electric charge storage therein and reading of the electron charge patterns therefrom over relatively greater numbers of erase/write operations relative to a target having a thermally-grown oxide layer.
摘要翻译：在电子束可寻址存储器中，用于存储电荷的改进目标利用在半导体层上生长的阳极氧化物，形成半导体二极管结构的一部分。阳极氧化物覆盖有导电材料的平面膜，并且目标结构用用于写入电荷的电子束扫描，并且通过相对于目标的相对较多数量的擦除/写入操作读取电子电荷模式具有热生长的氧化物层。

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