公开(公告)号：WO1993024888A1

公开(公告)日：1993-12-09

申请号：PCT/US1993004961

申请日：1993-05-21

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  HERRMANN, Frederick, P. ,  SODINI, Charles, G.

IPC: G06F13/14

CPC classification number: G06F13/37 ,  G06F13/14

Abstract: A logic circuit for a content-addressable-memory or parallel-processor array cell implements both prioritizing and counting functions for response resolution. It includes a means for receiving from a prior cell a response-resolution token and a means for receiving the positive or negative response of the current cell to a pattern to be matched. It also includes a means for deriving as a function of the prior cell's response-resolution token a response-resolution token for the current cell that implements prioritization and counting response-resolution functions for positive or negative pattern-matching responses of the current cell. Finally, it includes a means for selecting for the current cell the appropriate response-resolution token based on the cell's positive or negative pattern-matching response and a means for sending that response-resolution token to a subsequent cell. In a preferred embodiment of the invention, the means for selecting the current cell's response-resolution token for a positive or negative pattern-matching response uses a simple pass-transistor switching circuit.

Abstract translation: 用于内容寻址存储器或并行处理器阵列单元的逻辑电路实现了用于响应分辨率的优先级和计数功能。 它包括用于从先前小区接收响应分辨率令牌的装置和用于将当前小区的正或负响应接收到要匹配的模式的装置。 它还包括用于根据先前单元的响应分辨率令牌来导出用于对当前单元的正或负模式匹配响应进行优先级排序和计数响应分辨率函数的当前单元的响应分辨率令牌的装置。 最后，它包括用于基于小区的正或负模式匹配响应为当前小区选择适当的响应分辨率令牌的装置，以及用于将该响应分辨率令牌发送到后续小区的装置。 在本发明的优选实施例中，用于选择正或负模式匹配响应的当前单元的响应分辨率令牌的装置使用简单的通过晶体管切换电路。

公开(公告)号：WO1993023902A1

公开(公告)日：1993-11-25

申请号：PCT/US1993003037

申请日：1993-03-31

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  EGLASH, Stephen, J. ,  CHOI, Hong, K.

IPC: H01S03/19

CPC classification number: B82Y20/00 ,  H01S5/343 ,  H01S5/34306

Abstract: A GaInAsSb quantum-well laser for highly efficient conversion of input energy to output infrared light is described. The laser consists of an MBE grown active region formed of a plurality of GaInAsSb quantum-well layers separated by AlGaAsSb barrier layers. The active region is sandwiched between AlGaAsSb cladding layers in which the Al content is greater than the Al content in the barrier layers.

公开(公告)号：WO1993018578A1

公开(公告)日：1993-09-16

申请号：PCT/US1993002445

申请日：1993-03-12

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  KUSHNER, Lawrence, J.

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY

IPC: H03C03/00

CPC classification number: H03C3/40 ,  G06J1/00 ,  H03C1/52 ,  H04L27/122 ,  H04L27/2092

Abstract: A low-power digital frequency synthesizer combining direct digital frequency synthesis techniques with serrodyne frequency translation principles to produce a wideband frequency response with high spectral purity. A conventional direct digital synthesizer is used to generate a high-resolution analog carrier signal from a low-speed digital clock signal. The carrier signal is phase modulated by a low-resolution signal generated from a high-speed digital clock signal. The modularity signal is a higher frequency signal than the carrier signal. The phase modulation is accomplished by exact decoded gain elements. The spectral purity of the resulting high-resolution output signal is unobtainable by conventional direct digital synthesizers, while providing significant power savings.

公开(公告)号：WO1993013570A1

公开(公告)日：1993-07-08

申请号：PCT/US1992011176

申请日：1992-12-23

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  LEE, Joseph, C.

IPC: H01Q13/06

CPC classification number: H01Q13/065 ,  H01Q19/08

Abstract: The widebeam antenna includes a tapered dielectric waveguide (18, 20) having a radiating end (14) and an end for coupling electromagnetic energy into and out of the dielectric waveguide. A conducting sleeve (16) surrounds the dielectric waveguide. A corrugated flange (26) surrounds the sleeve (16) near the radiating end (14) of the waveguide and a dielectric ring (32) also surrounds the radiating end (14) of the waveguide. It is preferred that the dielectric ring (32) has a dielectric constant in the range of 2.0 to 4.0. The structure of the invention provides substantially uniform hemispherical coverage for the transmission and reception of electromagnetic energy.

公开(公告)号：WO1993011568A1

公开(公告)日：1993-06-10

申请号：PCT/US1992010369

申请日：1992-12-02

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  REICH, Robert, K. ,  KOSICKI, Bernard, B. ,  SAVOYE, Eugene, D.

IPC: H01L29/796

CPC classification number: H01L29/1091 ,  H01L27/14831

Abstract: A charge-coupled device having an array of pixel elements formed in a substrate (22) which device is operable in a first state to expand (25A) the depletion well regions of each pixel element into the substrate for storing incoming photoelectrons therein and in a second state to contract (25B) the expanded depletion well regions to prevent storage of photoelectrons in the contracted depletion well regions.

Abstract translation: 一种具有形成在衬底（22）中的像素元件阵列的电荷耦合器件，该器件可在第一状态下操作，以将每个像素元件的耗尽阱区扩展（25A）到衬底中，用于存储入射光电子，并且在 第二国承包（25B）扩大的耗尽井区域，以防止光电子在承包的耗尽井区域中储存。

公开(公告)号：WO1993010972A1

公开(公告)日：1993-06-10

申请号：PCT/US1992010276

申请日：1992-11-20

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  TONYAN, Timothy, D. ,  GIBSON, Lorna, J.

IPC: B32B13/02

CPC classification number: C04B38/08 ,  C04B20/002 ,  C04B28/04 ,  C04B2111/00612 ,  Y02W30/94 ,  C04B14/06 ,  C04B18/146 ,  C04B20/0016 ,  C04B20/0048 ,  C04B20/1055 ,  C04B24/24 ,  C04B38/10 ,  C04B40/0028 ,  C04B2103/32

Abstract: A lightweight composite includes aggregate particles (14), a high density phase which surrounds the aggregate particles (14) or forms a thin exterior shell of an aggregate particle (14) and a low density matrix phase (16) which occupies interstitial space between the aggregate particles (14) to produce a cell (24) or sandwich beam microstructure. A lightweight cement composite and a method for producing such a lightweight cement composite are provided as are structural panels including a lightweight composite layer characterized by a sandwich beam microstructure. The low density matrix phase (16) can be cellular concrete characterized by a void (10) surrounded by a more dense material (12), which can be cement.

Abstract translation: 轻质复合材料包括聚集体颗粒（14），围绕聚集颗粒（14）的高密度相或形成聚集颗粒（14）的薄外壳和低密度矩阵相（16），所述低密度相占据第 聚集颗粒（14）以产生电池（24）或夹心梁微结构。 提供了一种轻质水泥复合材料和一种生产这种轻质水泥复合材料的方法，结构面板包括由夹层梁微结构组成的轻质复合层。 低密度基质相（16）可以是多孔混凝土，其特征在于由更致密的材料（12）包围的空隙（10），其可以是水泥。

公开(公告)号：WO1993008850A1

公开(公告)日：1993-05-13

申请号：PCT/US1992009142

申请日：1992-10-28

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  CHILDREN'S MEDICAL CENTER CORPORATION

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  CHILDREN'S MEDICAL CENTER CORPORATION ,  STEIN, James, E. ,  GILBERT, James, C. ,  INGBER, Donald, E. ,  LANGER, Robert, S. ,  VACANTI, Joseph, P.

IPC: A61L27/00

CPC classification number: A61L27/3886 ,  A61F2/02 ,  A61F2/022 ,  A61L27/38 ,  A61L27/3804 ,  A61L27/56 ,  C12N5/00

Abstract: A method is disclosed whereby cells having a desired function are seeded on and into biocompatible, biodegradable or non-degradable polymer scaffolding, previously implanted in a patient and infiltrated with blood vessels and connective tissue, to produce a functional organ equivalent. The resulting organoid is a chimera formed of parenchymal elements of the donated tissue and vascular and matrix elements of the host. The matrix should be a non-toxic, injectable porous template for vascular ingrowth. The pore size, usually between approximately 100 and 300 microns, should allow vascular and connective tissue ingrowth throughout approximately 10 to 90 % of the matrix, and the injection of cells such as hepatocytes without damage to the cells or patient. The introduced cells attach to the connective tissue and are fed by the blood vessels. Immediately prior to polymer implantation portacaval shunts can be created to provide trophic stimulatory factors to the implants to enhance replication and function.

Abstract translation: 公开了一种方法，其中具有期望功能的细胞接种在生物相容性，可生物降解或不可降解的聚合物支架中，其预先植入患者体内并渗入血管和结缔组织以产生功能性器官当量。 所得的有机体是由捐赠的组织的实质元素和宿主的血管和基质元素形成的嵌合体。 基质应是一种无毒，可注射的多孔模板，用于血管向内生长。 通常在约100和300微米之间的孔径应允许血管和结缔组织在基质的约10至90％内向内生长，以及注射细胞如肝细胞而不损伤细胞或患者。 引入的细胞附着于结缔组织并由血管进食。 在聚合物植入之前，可以创建口腔分流术，以向植入物提供营养刺激因子以增强复制和功能。

公开(公告)号：WO1993008067A1

公开(公告)日：1993-04-29

申请号：PCT/US1992009043

申请日：1992-10-23

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  WEST, A., Mark, T.

IPC: B62D55/08

CPC classification number: B25J5/005 ,  B60L11/1805 ,  B60L15/2036 ,  B60L2220/46 ,  B60L2240/12 ,  B60L2240/421 ,  B60L2260/28 ,  B62D11/00 ,  B62D55/08 ,  B62D55/28 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/72 ,  Y02T10/7275

Abstract: The invention provides controlled omnidirectional relative movement between a device and a selected surface in contact therewith. The device is preferably a vehicle (10) having a first and second track (14A, 14B) mounted thereto, which tracks (14) are parallel and spaced from each other and are independently driven in a first direction. A plurality of spheres (18) are mounted in each of the tracks (14) at intervals spaced in the first direction and the spheres (18) in at least one of the tracks (14) are driven to rotate in a second direction, generally perpendicular to the first direction. By suitably controlling the movements of the tracks (14) in the first direction and of the spheres (18) in the second direction, movement along any desired trajectory may be achieved with three degrees of freedom. By having the device stationary and the surface movable, an omnidirectional platform is provided.

公开(公告)号：WO1993007913A1

公开(公告)日：1993-04-29

申请号：PCT/US1992009038

申请日：1992-10-23

Applicant: CHILDREN'S MEDICAL CENTER CORPORATION ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： CHILDREN'S MEDICAL CENTER CORPORATION ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  ATALA, Anthony ,  VACANTI, Joseph, P. ,  FREEMAN, Michael, R. ,  LANGER, Robert, S.

IPC: A61L27/00

CPC classification number: A61L27/3804 ,  A61F2/062 ,  A61L27/3882 ,  C12N5/0068 ,  C12N2533/40

Abstract: Methods and artificial matrices for the growth and implantation of urological structures and surfaces are disclosed in which urothelial cells are grown in culture on biodegradable, biocompatible, fibrous matrices formed of polymers, such as polyglycolic acid, polylactic acid, or other polymers which degrade over time. The cells can be cultured in vitro until an adequate cell volume and density has developed for the cells to survive and proliferate in vivo. Alternatively, when adequate cell numbers for implantation are available, the cells can be attached to the matrix and implanted directly, without proliferation in vivo. The implants approximate the desired urological structure to be replaced or repaired, such as the kidney, ureter, bladder, urethra, and the like. Implantation is followed by remodeling through cell growth and proliferation in vivo. In another aspect of the inventin, techniques are disclosed for selectively extracting or harvesting urothelial cells either from excised urological tissue in vitro or from intact urological tissue in vivo by treating the tissue with a digestive enzyme, such as collagenase.

Abstract translation: 公开了用于生长和植入泌尿结构和表面的方法和人造基质，其中尿素上皮细胞在可生物降解的生物相容性的生物相容的纤维基质上生长培养，所述生物相容性由聚合物形成，例如聚乙醇酸，聚乳酸或其它随时间降解的聚合物 。 细胞可以在体外培养，直到细胞体积和密度发展得足以使细胞在体内存活和增殖。 或者，当有足够的植入细胞数量可用时，可以将细胞连接到基质上并直接注入，而不会在体内增殖。 植入物近似于要更换或修复的所需泌尿系统结构，例如肾，输尿管，膀胱，尿道等。 植入之后，通过体内细胞生长和增殖重塑。 在本发明的另一方面，公开了用于通过用消化酶（例如胶原酶）处理组织来选择性地从体外来自切除的泌尿组织或从体内的完整泌尿组织中提取或收获尿路上皮细胞的技术。

公开(公告)号：WO1993005208A1

公开(公告)日：1993-03-18

申请号：PCT/US1992007618

申请日：1992-09-09

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  SPIRE CORPORATION

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  SPIRE CORPORATION ,  SMITH, Henry, I. ,  ISMAIL, Khalid, E. ,  KARAM, Nasser

IPC: C30B29/00

CPC classification number: C30B25/02 ,  C30B25/18 ,  C30B29/40 ,  C30B29/42

Abstract: A method for the epitaxial deposition of a substance onto a substrate (20) including providing a sawtooth-profile relief structure (80) on a surface of the substrate and depositing the substance (70) onto the sawtooth-profile relief structure.

Abstract translation: 一种用于将物质外延沉积到衬底（20）上的方法，包括在衬底的表面上提供锯齿形凸起结构（80）并将物质（70）沉积到锯齿形凸起结构上。