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    • 1. 发明授权
    • High speed device emulation computer system tester
    • 高速设备仿真计算机系统测试仪
    • US06571357B1
    • 2003-05-27
    • US09563006
    • 2000-04-29
    • Matthew A. MartinEverett BashamChristopher D. Price
    • Matthew A. MartinEverett BashamChristopher D. Price
    • H02H305
    • G06F11/261
    • The application discloses a system and method for providing a compact and high speed mechanism for emulating an ASIC or other chip operating within a large computing system environment for diagnostic purposes. A two step process is disclosed for generating data patterns for fully exercising a chip and to then transmit these data patterns at a high frequency to a system under test. In phase one, a pattern generator preferably transmits test pattern data at a first frequency to a memory storage device. In phase two, the memory storage device is enabled to transmit the stored test pattern data at a high frequency to a system under test. Buffering the test pattern data in this manner enables the inventive system to bypass the data transmission speed limitation of the pattern generator while still employing the test patterns created by the pattern generator and to thereby test the system under test under high speed operating conditions.
    • 本申请公开了一种系统和方法,用于提供用于仿真用于诊断目的的大型计算系统环境中运行的ASIC或其他芯片的紧凑且高速的机制。 公开了一种用于产生用于完全运动芯片并且然后以高频将这些数据模式传送到被测系统的数据模式的两步过程。 在第一阶段中,图案生成器优选地将测试图案数据以第一频率发送到存储器存储设备。 在第二阶段中,存储器存储装置能够将存储的测试模式数据以高频率发送到被测系统。 以这种方式缓冲测试图案数据使得本发明的系统能够绕过图案发生器的数据传输速度限制,同时仍然采用由图案发生器产生的测试图案,从而在高速运行条件下测试被测系统。
    • 2. 发明授权
    • Stencil device for accurately applying solder paste to a printed circuit board
    • 模板装置,用于将印刷电路板精确地焊接到印刷电路板上
    • US07412923B2
    • 2008-08-19
    • US10654066
    • 2003-09-03
    • Ian P. ShaefferEverett BashamChristopher D. Price
    • Ian P. ShaefferEverett BashamChristopher D. Price
    • B05C17/06
    • H05K3/3484H01R31/08H05K1/0293H05K3/1216H05K2201/0305H05K2203/043H05K2203/173
    • A stencil device ensures that solder paste is accurately applied to a printed circuit board to create a substantially zero signal degradation solder bridge electrical connection. The printed circuit board is defined by a dielectric structure core having a first surface which further includes a first conducting pad having an edge and a second conducting edge having an edge separated from and adjacent to the edge of the first conducting pad. The edges of the first and second conducting pads define therebetween a surface area of the first surface. The stencil device includes a stencil plate member defining a first opening sized to substantially correspond to the first conducting pad, a second opening sized to substantially correspond to the second conducting pad, and a third opening. The third opening links the first opening to the second opening at a size to correspond to a partial portion of the surface area of the first surface between the edges of the first and second conducting pads. The stencil device ensures that solder paste flows through the first, second, and third openings onto the first and second conducting pads and the first surface of the dielectric structure core to form a substantially zero signal degradation electrical connection between the first and second conducting pads.
    • 模板装置确保焊膏精确地施加到印刷电路板上以产生基本为零的信号劣化焊接桥电连接。 印刷电路板由具有第一表面的电介质结构芯限定,该第一表面还包括具有边缘的第一导电焊盘和具有与第一导电焊盘的边缘分离并与其相邻的边缘的第二导电边缘。 第一和第二导电垫的边缘在其间界定第一表面的表面积。 模板装置包括模板板构件,其限定尺寸适于基本上对应于第一导电垫的第一开口,尺寸设定为基本对应于第二导电垫的第二开口和第三开口。 第三开口以与第一和第二导电焊盘的边缘之间的第一表面的表面积的部分部分相对应的尺寸将第一开口连接到第二开口。 模板装置确保焊膏通过第一,第二和第三开口流动到第一和第二导电焊盘和介电结构芯的第一表面上,以在第一和第二导电焊盘之间形成基本为零的信号劣化电连接。