Wireless communication for fume hood control
    11.
    发明授权
    Wireless communication for fume hood control 有权
    无线通信通风柜控制

    公开(公告)号:US06935943B2

    公开(公告)日:2005-08-30

    申请号:US10838409

    申请日:2004-05-04

    申请人: Mehul Desai

    发明人: Mehul Desai

    IPC分类号: B01L1/00 B08B15/02

    摘要: A method and apparatus for controlling a fume hood. A containment condition, i.e., a condition that may affect containment of potentially harmful substances in the hood, may be detected, and information regarding the detected condition sent by wireless signal. A fume hood controller may control at least airflow in the hood based on the information contained in the wireless signal.

    摘要翻译: 一种用于控制通风橱的方法和装置。 可以检测到容纳条件,即可能影响罩中潜在有害物质容纳的状况,以及关于通过无线信号发送的检测条件的信息。 通风柜控制器可基于包含在无线信号中的信息至少控制罩中的气流。

    High speed four-to-two carry save adder
    12.
    发明授权
    High speed four-to-two carry save adder 失效
    高速四对二进位保存加法器

    公开(公告)号:US06266757B1

    公开(公告)日:2001-07-24

    申请号:US09074019

    申请日:1998-05-06

    IPC分类号: G06F1206

    摘要: A circuit for adding two or more numbers and generating a sum and carry output is disclosed. The adder circuit receives two or more numbers to be added together. The adder circuit includes a number of exclusive-or logic circuits that generate intermediate outputs. The intermediate outputs are input to a domino multiplexer. The domino multiplexer includes a multiplexer gate and an exclusive-or gate connected in parallel. The domino multiplexer circuit outputs a sum value and a carry value for the input numbers. A clock signal drives the multiplexer gate and the exclusive-or gate in the domino multiplexer circuit. This clock signal synchronizes the input of the numbers to be added together and the addition operation in the domino multiplexer circuit.

    摘要翻译: 公开了一种用于添加两个或多个数字并产生和和携带输出的电路。 加法器电路接收两个或多个要相加的数字。 加法器电路包括产生中间输出的多个异或逻辑电路。 中间输出输入到多米诺骨牌多路复用器。 多米诺骨牌多路复用器包括多路复用器门和并联连接的异或门。 多米诺骨牌多路复用器电路输出输入号码的和值和进位值。 时钟信号驱动复用器门和多米诺多路复用器电路中的异或门。 该时钟信号将要加到一起的数字的输入和多米诺多路复用器电路中的相加操作同步。