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    • 13. 发明授权
    • Refraction delay error correction using agile beamformer
    • 使用敏捷波束形成器的折射延迟误差校正
    • US06443897B1
    • 2002-09-03
    • US09750869
    • 2000-12-28
    • David T. DubbersteinSteven C. Miller
    • David T. DubbersteinSteven C. Miller
    • A61B0800
    • G10K11/346
    • A method and an apparatus for correcting refraction delay errors on curved probes for all ranges using cordic rotation. The angle &phgr; from the normal of an element to the focus is determined as a function of the angle of cordic rotation. Then a delay error correction is indexed using this angle &phgr;. The angular correction method is efficient in that it uses the inherent property of cordic rotation to calculate the only range-dependent variable required for the correction. Thus the additional hardware required to calculate the corrections is minimal, as the remaining correction variables are vector and range independent.
    • 一种用于校正所有范围的弯曲探针上的折射延迟误差的方法和装置,其使用线性旋转。 从元件的法线到焦点的角度phi被确定为帘线旋转角度的函数。 然后使用该角度phi对延迟误差校正进行索引。 角度校正方法是有效的,因为它使用线性旋转的固有属性来计算校正所需的唯一的范围因变量。 因此,计算校正所需的附加硬件是最小的,因为剩余的校正变量是向量和范围无关的。
    • 14. 发明授权
    • Packetized data transmissions in a switched router architecture
    • 交换式路由器架构中的分组化数据传输
    • US06282195B1
    • 2001-08-28
    • US08780785
    • 1997-01-09
    • Steven C. MillerJames E. Tornes
    • Steven C. MillerJames E. Tornes
    • H04L1256
    • H04L49/253H04L49/30
    • A switched router for transmitting packetized data concurrently between a plurality of devices coupled to the switched router. The devices are coupled to the I/O ports of the switched router. The switched router is then programmed to route packets of data from various source ports to several destination ports. Different packets may be transmitted concurrently through the switched router. The packets are comprised of a command word containing information corresponding to packet routing, data format, size, and transaction identification. Furthermore, the command word may include a destination identification number for routing the packet to a destination device, a source identification number used by a destination device to send back responses, a transaction number to tag requests that require a response, and a packet type value indicating a particular type of packet. In addition, there may be bits within a packet used to indicate a coherent transaction, guarantee bandwidth, an error during transmission, or a sync barrier for write ordering. Other types of packets may include a fetch and operation packet with increment by one, a fetch and operation packet with decrement by one, a fetch and operation packet with clear, a store and operation packet with increment by one, a store and operation packet with decrement by one, a store and operation packet with a logical OR, and a store and operation packet with a logical AND.
    • 一种用于在耦合到所述交换路由器的多个设备之间并发地发送分组化数据的交换路由器。 这些设备耦合到交换路由器的I / O端口。 然后将交换路由器编程为将数据包从各种源端口路由到多个目的端口。 可以通过交换路由器同时发送不同的分组。 分组由包含对应于分组路由,数据格式,大小和事务标识的信息的命令字组成。 此外,命令字可以包括用于将分组路由到目的地设备的目的地标识号,目的地设备用于发送回应用的源标识号,用于标记需要响应的请求的事务号,以及分组类型值 指示特定类型的数据包。 此外,在用于指示相干事务,保证带宽,传输期间的错误或用于写入顺序的同步屏障中的分组中可能存在位。 其他类型的分组可以包括递增1的获取和操作分组,递减1的获取和操作分组,具有清除的获取和操作分组,具有递增1的存储和操作分组,具有递增1的存储和操作分组, 递减1,具有逻辑OR的存储和操作分组以及具有逻辑AND的存储和操作分组。
    • 15. 发明授权
    • Method and apparatus for adaptive B-mode image enhancement
    • 用于自适应B模式图像增强的方法和装置
    • US5961461A
    • 1999-10-05
    • US966376
    • 1997-11-07
    • Larry Y. L. MoSteven C. Miller
    • Larry Y. L. MoSteven C. Miller
    • A61B8/00G06T1/00G06T5/20
    • G06T5/20
    • A method and an apparatus for adaptively enhancing the B-mode image during post-detection image processing in an ultrasound imaging system. A low pass filter which smooths out speckle and a high pass filter which enhances edges are placed in parallel signal paths connected to the output of an envelope detector in a B-mode processor. The signals in the high pass filter path are logarithmically compressed before high pass filtering. The signals in the low pass filter path are logarithmically compressed after low pass filtering. Respective weighting factors are applied to the low- and high-pass-filtered signals by an adaptive weighting device, which may take the form of a processor or a look-up table. The weighted low- and high-pass-filtered signals are then summed and optionally input to an anti-aliasing low pass filter before decimation and scan conversion.
    • 一种用于在超声成像系统中的后检测图像处理期间自适应地增强B模式图像的方法和装置。 平滑斑点的低通滤波器和增强边缘的高通滤波器被放置在与B模式处理器中的包络检测器的输出端连接的并行信号路径中。 在高通滤波之前,高通滤波器路径中的信号是对数压缩的。 低通滤波器中的信号在低通滤波后对数压缩。 通过自适应加权装置将相应的加权因子应用于低通滤波信号和高通滤波信号,该自适应加权装置可以采取处理器或查找表的形式。 然后将加权的低通滤波和高通滤波信号相加,并可选地在抽取和扫描转换之前输入到抗混叠低通滤波器。
    • 16. 发明授权
    • High bandwidth PCI to packet switched router bridge having minimized
memory latency
    • 高带宽PCI到分组交换路由器桥,具有最小的内存延迟
    • US5915104A
    • 1999-06-22
    • US780781
    • 1997-01-09
    • Steven C. Miller
    • Steven C. Miller
    • G06F13/40G06F13/42
    • G06F13/4022
    • In a computer system, a mechanism for minimizing memory latencies. An improved, high-speed packet switched router is used to route packets quickly and efficiently between the microprocessor and the main memory. The computer system also supports PCI devices by implementing a bridge which acts as an interface between the PCI bus and the packet switched router. In order to minimize the memory latencies for PCI based memory accesses through the bridge, a plurality of read and write buffers are implemented. Write gathering is used to gather a plurality of write transactions on the PCI bus into the write buffers and sent by the bridge as one cache line sized transfer to the routing mechanism. For PCI based read operations, data is pre-fetched from the main memory and stored in the read buffers. Thereby, PCI devices can access the read buffers multiple times to retrieve the requested data.
    • 在计算机系统中,用于最小化内存延迟的机制。 改进的高速分组交换路由器用于在微处理器和主存储器之间快速高效地路由分组。 计算机系统还通过实现作为PCI总线和分组交换路由器之间的接口的桥来支持PCI设备。 为了最小化通过桥接器的基于PCI的存储器访问的存储器延迟,实现了多个读取和写入缓冲器。 写集合用于将PCI总线上的多个写事务收集到写缓冲区中,并由桥作为一个高速缓存线大小传送到路由机制。 对于基于PCI的读取操作,数据从主存储器中预取并存储在读缓冲器中。 因此,PCI设备可以多次访问读取缓冲区以检索所请求的数据。
    • 20. 发明授权
    • Serialized chip enables
    • 序列化芯片使能
    • US08081526B1
    • 2011-12-20
    • US12238935
    • 2008-09-26
    • Scott WestbrookSteven C. Miller
    • Scott WestbrookSteven C. Miller
    • G11C7/10
    • G11C8/10
    • A method and system for serializing an enable signal designating an electronic device such as a chip to enable or disable in order to reduce the number of pins and physical signal traces required to provide connections for enable signals of multiple electronic devices, such as memory, e.g. Flash and DRAM, is described. The enable signal can be encoded to reduce the number of clock cycles to send the serialized enable signal. A device controller can serialize, encode, and send the enable signal to a decoding module using reduced number of pins and physical connections. Then the decoding module can send a decoded enable signals to individual electronic devices or chips to enable or disable.
    • 串行化指示诸如芯片的电子设备的使能信号的方法和系统,以使能或禁用,以便减少为多个电子设备(例如存储器)的启用信号提供连接所需的引脚数量和物理信号迹线。 描述了Flash和DRAM。 可以编码使能信号以减少发送串行化使能信号的时钟周期数。 设备控制器可以使用减少数量的引脚和物理连接将序列化,编码和发送使能信号发送到解码模块。 然后,解码模块可以将解码的使能信号发送到各个电子设备或芯片以启用或禁用。