-
公开(公告)号：US06335637B1
公开(公告)日：2002-01-01
申请号：US09541196
申请日：2000-04-03
IPC分类号： H03K190175
CPC分类号： H03K19/00315 , H03K19/09429
摘要： The protection circuit of the present invention addresses the problem of indeterminate logic levels caused by loss of one of the power supplies in a two-power-supply CMOS integrated circuit. The circuit of the present invention replaces the typical scheme of power supply sequencing to fix the problem. The circuit disclosed herein detects the state of the core voltage and disables the output drivers when the core voltage is detected as being off. The disabled drivers are put into a high impedance state, thereby eliminating the potential for damage and eliminating the need for power supply sequencing. The invention also protects against the sudden loss of the integrated circuit core voltage, VDD, power supply during normal operation.
摘要翻译： 本发明的保护电路解决了由两电源CMOS集成电路中的一个电源的损耗引起的不确定的逻辑电平的问题。 本发明的电路取代了电源排序的典型方案来解决问题。 本文所公开的电路检测核心电压的状态，并且当核心电压被检测为关闭时，禁用输出驱动器。 禁用的驱动器处于高阻抗状态，从而消除了损坏的可能性，并消除了对电源排序的需要。 本发明还可以防止在正常工作期间集成电路核心电压VDD，电源的突然损失。
-
公开(公告)号：US08375882B1
公开(公告)日：2013-02-19
申请号：US12871845
申请日：2010-08-30
申请人： David W. Stout
发明人： David W. Stout
IPC分类号： A63F3/00
CPC分类号： A63B71/06 , A63B2071/0602 , A63B2243/007
摘要： A system and method for ascertaining field position for the game of American football has first and second wheels, each being substantially planar and round. The first wheel is relatively smaller than the second wheel and the two are rotatably mounted coaxially with respect to each other to allow rotation. The wheels are marked with various notches, numbers, and arrows to allow quick and easy calculation of yards gained or lost on a given play in accordance with the described operation.
摘要翻译： 用于确定美式足球比赛的场地的系统和方法具有第一和第二轮，每个轮基本上是平面和圆形的。 第一轮相对小于第二轮，并且两者相对于彼此同轴地可旋转地安装以允许旋转。 轮子被标记有各种凹口，数字和箭头，以便根据所描述的操作来快速和容易地计算在给定游戏中获得或丢失的场地。
-
搜索结果
2 条记录 (耗时 0.017 秒)
