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    • 89. 发明申请
    • Apparatus and method for time-to-digital conversion and jitter-measuring apparatus using the same
    • 用于时间 - 数字转换的装置和方法以及使用该方法的抖动测量装置
    • US20060132340A1
    • 2006-06-22
    • US11305168
    • 2005-12-19
    • Chun Lin
    • Chun Lin
    • H03M1/10
    • G04F10/005
    • A time-to-digital conversion apparatus reduces the pulse width of a signal to be tested by introducing the signal through a plurality of shrinking cells cascaded until the reduced pulse width cannot drive the next shrinking cell, to generate a group of digital output codes representative of a binary code. The apparatus operates with a clock signal and comprises a shrinking cell group converting the signal to be tested to a plurality of first digital output codes, and a latch cell group receiving the first digital output codes and generating a plurality of second digital output codes which can be converted to a binary code. The time-to-digital conversion apparatus could be utilized in a jitter-measuring apparatus, which converts the jitter of a signal of analog form to a group of digital codes. The digital codes represent a time width of cycle-to-cycle jitter of the signal.
    • 时间数字转换装置通过级联的多个收缩单元引入信号来减小要测试的信号的脉冲宽度,直到减小的脉冲宽度不能驱动下一个收缩单元,以产生一组数字输出代码 的二进制代码。 该装置利用时钟信号进行工作,并且包括将要测试的信号转换成多个第一数字输出代码的收缩单元组,以及接收第一数字输出代码并产生多个第二数字输出代码的锁存单元组, 转换为二进制代码。 时间数字转换装置可以用在抖动测量装置中,抖动测量装置将模拟形式的信号的抖动转换成一组数字代码。 数字代码表示信号的周期到周期抖动的时间宽度。
    • 90. 发明申请
    • Portable blackbody furnace
    • 便携式黑体炉
    • US20060081598A1
    • 2006-04-20
    • US11250386
    • 2005-10-17
    • John LinChau ChenChun HsuHui TaiHsin KoChun LinChuen Liou
    • John LinChau ChenChun HsuHui TaiHsin KoChun LinChuen Liou
    • F27B14/00
    • F27B17/0016F27D19/00F27D21/0014
    • The present invention discloses a portable blackbody furnace comprising a metallic body, a cylindrical cavity with a tapered end in the metallic body, a shielding plate positioned at an open end of the cylindrical cavity, at least a first heaters positioned in the shielding plate, a plurality of second heaters positioned around the metallic body, and a plurality of thermometers positioned in the metallic body. Preferably, the heat capacity of the metallic body is larger than 200 Joules/K, and has radial thickness larger than 5 mm. There are grooves formed on the outer wall of the metallic body, and the second heaters are heating wires embedded inside the grooves. In addition, the flow direction of the current between two adjacent heating wires is opposite to eliminate the magnetic field generated from the current flow.
    • 本发明公开了一种便携式黑体炉,它包括金属体,在金属体中具有锥形端的圆柱形空腔,位于圆柱形空腔的开口端的屏蔽板,至少位于屏蔽板中的第一加热器, 围绕金属体定位的多个第二加热器和位于金属体中的多个温度计。 优选地,金属体的热容量大于200焦耳/ K,并且径向厚度大于5mm。 在金属体的外壁上形成有凹槽,第二加热器是嵌入槽内的加热丝。 此外,两个相邻加热丝之间的电流的流动方向是相反的,以消除由电流产生的磁场。