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公开(公告)号：US5957846A
公开(公告)日：1999-09-28
申请号：US971938
申请日：1997-11-17
CPC分类号： G01S7/003 , A61B8/4236 , A61B8/463 , A61B8/546 , A61B8/56 , G01S15/8915 , G01S15/8934 , G01S15/8979 , G01S7/52023 , G01S7/52053 , G01S7/52063 , G01S7/52073 , G01S7/5208 , G01S7/52082 , A61B2560/045 , A61B7/04 , A61B8/00 , A61B8/12 , A61B8/4209 , A61B8/4427 , A61B8/4455 , A61B8/4472 , A61B8/4488 , G01S15/899 , G01S7/52025 , G01S7/52026 , G01S7/52046
摘要： A portable ultrasound imaging system includes a scan head coupled by a cable to a portable battery-powered data processor and display unit. The scan head enclosure houses an array of ultrasonic transducers and the circuitry associated therewith, including pulse synchronizer circuitry used in the transmit mode for transmission of ultrasonic pulses and beam forming circuitry used in the receive mode to dynamically focus reflected ultrasonic signals returning from the region of interest being imaged.
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公开(公告)号：US5839442A
公开(公告)日：1998-11-24
申请号：US496805
申请日：1995-06-29
CPC分类号： G01S15/8918 , A61B8/546 , A61B8/56 , G01S7/52053 , G01S7/52063 , G01S7/52073 , G01S15/8979 , G01S15/899 , G01S7/52025 , G01S7/52026 , G01S7/52046
摘要： A portable ultrasound imaging system includes a hand-held scan head coupled by a cable to a portable battery-powered data processor and display unit, preferably in the form of a lap-top computer. The scan head enclosure houses an array of ultrasonic transducers and the circuitry associated therewith, including pulse synchronizer circuitry used in the transmit mode to time transmission of ultrasonic pulses and beam forming circuitry used in the receive mode to dynamically focus reflected ultrasonic signals returning from the region of interest being imaged. Because the pulse synchronizer and beam forming circuits are integrated on small chips, they can be included in the scan head, resulting in a portable low-power system. Also, since the beam forming and summation functions are performed in the scan head in proximity to the transducer elements, signal loss is substantially reduced, resulting in much higher image quality. In addition, the focused summed signal is transferred to the data processor and display unit by a cable which is far less sophisticated and expensive than the cables used in prior systems to transfer all of the transducer signals to a console signal processing unit.
摘要翻译： 便携式超声成像系统包括手持扫描头，其通过电缆耦合到便携式电池供电的数据处理器和显示单元，优选地以膝上型计算机的形式。 扫描头外壳包含一组超声波换能器和与之相关联的电路，包括在发射模式中使用的脉冲同步器电路，用于在接收模式下使用超声波脉冲和波束形成电路的时间传输，以动态聚焦从该区域返回的反射超声波信号 感兴趣的被成像。 因为脉冲同步器和波束形成电路集成在小芯片上，所以它们可以包括在扫描头中，从而产生便携式低功率系统。 此外，由于在扫描头中靠近换能器元件执行波束形成和求和功能，所以信号损耗显着降低，导致高得多的图像质量。 此外，聚焦的和信号通过电缆传送到数据处理器和显示单元，该电缆远远低于用于将所有传感器信号传送到控制台信号处理单元的现有系统中使用的电缆的复杂和昂贵。
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公开(公告)号：US5126962A
公开(公告)日：1992-06-30
申请号：US551871
申请日：1990-07-11
申请人： Alice M. Chiang
发明人： Alice M. Chiang
CPC分类号： G06F17/147 , H04N19/62 , H04N19/649
摘要： A three dimensional (3D) discrete cosine transform (DCT) uses one dimensional DCT networks for transforming and inverse-transforming blocks of data, such as image data. The 3D DCT configuration uses DCT transform coding to remove both the spatial and temporal redundancy of a sequence of image frames to achieve high bandwidth compression.
摘要翻译： 三维（3D）离散余弦变换（DCT）使用一维DCT网络来变换和逆变换诸如图像数据的数据块。 3D DCT配置使用DCT变换编码来去除图像帧序列的空间和时间冗余以实现高带宽压缩。
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公开(公告)号：US4464726A
公开(公告)日：1984-08-07
申请号：US300219
申请日：1981-09-08
申请人： Alice M. Chiang
发明人： Alice M. Chiang
CPC分类号： G06J1/00
摘要： A charge domain parallel processing network. The network includes a floating gate CCD tapped delay line and an array of CCD signal processors each including a charge domain digital-analog multiplier. The delay line holds and shifts analog sampled data in the form of charge packets. At each stage of the delay line a floating gate sensing electrode is coupled to an analog input of an associated one of the CCD signal processors. The sampled data in the respective delay line stages are transferred and subsequently processed in parallel in the processors. Within each processor, the computation functions are performed in the charge domain. In some forms, local charge domain accumulating memories accumulate and store the processed signals, for example, providing a matrix-matrix product network or providing a triple-matrix product network.
摘要翻译： 电荷域并行处理网络。 该网络包括一个浮动栅极CCD抽头延迟线和一组CCD信号处理器，每个包括一个电荷域数模转换器。 延迟线保持并且以电荷分组的形式移位模拟采样数据。 在延迟线的每个阶段，浮动栅极感测电极耦合到相关联的一个CCD信号处理器的模拟输入端。 在各个延迟线级中的采样数据被传送并随后在处理器中并行处理。 在每个处理器中，计算功能在电荷域中执行。 在一些形式中，局部电荷域累积存储器累积并存储经处理的信号，例如提供矩阵矩阵乘积网络或提供三矩阵产品网络。
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公开(公告)号：US4458324A
公开(公告)日：1984-07-03
申请号：US294633
申请日：1981-08-20
摘要： A charge domain digital-analog multiplier device. The device has one analog input, M-parallel digital inputs, and one analog output. An M-bit digital word signal is applied to the digital inputs and an analog signal is applied to the analog input. The output is a charge packet which is proportional to the product of the analog input signal and the digital word.
摘要翻译： 电荷域数模转换器。 该器件具有一个模拟输入，M个并行数字输入和一个模拟输出。 M位数字字信号被施加到数字输入，模拟信号被施加到模拟输入端。 输出是与模拟输入信号和数字字的乘积成比例的电荷分组。
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公开(公告)号：US4237473A
公开(公告)日：1980-12-02
申请号：US972298
申请日：1978-12-22
申请人： Alice M. Chiang
发明人： Alice M. Chiang
IPC分类号： H01L21/761 , H01L27/144 , H01L27/146 , H01L29/20 , H01L29/808 , H01L29/812 , H01L29/161
CPC分类号： H01L21/761 , H01L27/1443 , H01L27/14643 , H01L29/20 , H01L29/808 , H01L29/812
摘要： A gallium phosphide metal semiconductor field-effect transistor (MESFET) or a junction field-effect transistor (JFET) exhibits very low leakage current, is radiation hard, and is capable of high operating temperatures.
摘要翻译： 磷化镓金属半导体场效应晶体管（MESFET）或结场效应晶体管（JFET）表现出非常低的漏电流，是辐射硬的，并且能够具有高的工作温度。
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公开(公告)号：US4009516A
公开(公告)日：1977-03-01
申请号：US671913
申请日：1976-03-29
CPC分类号： G01J5/34 , H01L37/02 , H01L2224/48091 , Y10T29/42 , Y10T29/49002 , Y10T29/49812
摘要： Pyroelectric detectors are mounted on a substrate having a plurality of wax-filled cavities. The wax is then dissolved to provide a low thermal loss mounting structure for the detectors.
摘要翻译： 热电检测器安装在具有多个蜡填充腔的基底上。 然后将蜡溶解以提供用于检测器的低热损失安装结构。
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