公开(公告)号：US4320355A

公开(公告)日：1982-03-16

申请号：US135730

申请日：1980-03-31

申请人： Katsuaki Kawagoe ,  Hideki Kawaji

发明人： Katsuaki Kawagoe ,  Hideki Kawaji

IPC分类号： H03B1/00 ,  H03B23/00 ,  H03L7/12

CPC分类号： H03B23/00 ,  H03B2201/0241

摘要： A sweep signal generation system for producing an output sweep signal of very high frequency includes a circuit for generating an input sweep signal, and a phase locked loop which includes a phase detector, a voltage controlled oscillator and a harmonic frequency mixer. The output sweep signal is applied to the harmonic mixer together with a local oscillator signal of fixed frequency, the output from the harmonic frequency mixer being applied to the phase detector together with the input sweep signal. The output from the phase detector is applied to the voltage controlled oscillator to cause the frequency of the output thereof to be swept in accordance with variation of the input sweep signal.

摘要翻译： 用于产生非常高频率的输出扫描信号的扫描信号产生系统包括用于产生输入扫描信号的电路和包括相位检测器，压控振荡器和谐波混频器的锁相环。 输出扫频信号与固定频率的本地振荡器信号一起施加到谐波混频器，谐波混频器的输出与输入扫描信号一起施加到相位检测器。 来自相位检测器的输出被施加到压控振荡器，以根据输入扫描信号的变化使其输出的频率被扫描。

公开(公告)号：US20110312371A1

公开(公告)日：2011-12-22

申请号：US12818244

申请日：2010-06-18

申请人： Hideki Kawaji

发明人： Hideki Kawaji

IPC分类号： H04W88/02 ,  H04M1/00

CPC分类号： H04W24/00 ,  H04B15/00 ,  H04W88/02

摘要： A mis-function protection method for mobile phones from RF noise interference includes the steps of: a signal detection circuit provided in a mobile phone, the signal detection circuit being operated to periodically detect a RF signal with a predetermined time period to determine outputting a signal; when firstly detecting no RF signal, no signal output from the signal detection circuit, alternatively when firstly detecting a RF signal, the signal detection circuit being operated to secondly detect the firstly-detected RF signal after a predetermined time; and when secondly detecting none of the firstly-detected RF signal, no signal output from the signal detection circuit, alternatively when secondly detecting the firstly-detected RF signal, the signal detection circuit being operated to output the signal.

摘要翻译： 用于移动电话的RF噪声干扰的误功能保护方法包括以下步骤：设置在移动电话中的信号检测电路，所述信号检测电路被操作以周期性地检测具有预定时间段的RF信号，以确定输出信号 ; 当首先检测到无RF信号时，没有信号从信号检测电路输出，或者当首先检测到RF信号时，信号检测电路被操作以在预定时间之后二次检测第一检测到的RF信号; 当第二检测到的第一检测到的RF信号没有信号时，没有信号从信号检测电路输出，或者当二次检测到首先检测到的RF信号时，信号检测电路被操作以输出信号。

公开(公告)号：US4935698A

公开(公告)日：1990-06-19

申请号：US318265

申请日：1989-03-03

申请人： Hideki Kawaji ,  Peter J. Gilbert

发明人： Hideki Kawaji ,  Peter J. Gilbert

IPC分类号： G01B7/14 ,  H03K17/95

CPC分类号： H03K17/9517 ,  G01B7/14

摘要： A Hall elements and magnet assembly for use as a proximity detector includes a magnet, a pole piece mounted to one pole end of the magnet and an integrated circuit having two side-by-side Hall elements, an amplifier, interconnecting wiring providing the difference voltage between the two Hall output voltages at the input of the amplifier, and a Schmitt trigger circuit. The integrated circuit is mounted to the pole piece at the pole end of the magnet. The pole piece is a ferromagnetic member which is thinner in the center than at the periphery for achieving a highly uniform field strength across the surface of the magnet pole end toward reducing the criticality of the position of mounting of the integrated circuit in manufacturing and for extending the range of gap dimensions between a passing ferromagnetic article and the assembly for which proper detection of the passing article can be made to occur. The term "ferromagnetic" as used herein means any material with a relative permeability greater than unity and preferably greater than 100.

摘要翻译： 用作接近检测器的霍尔元件和磁体组件包括磁体，安装到磁体的一个极端的极片和具有两个并排霍尔元件的集成电路，放大器，提供差分电压的互连布线 放大器输入端的两个霍尔输出电压和施密特触发电路之间。 集成电路安装在磁铁极端的极片上。 极片是一个铁磁构件，其中心比外围薄，以便在磁极端部的表面上实现高度均匀的场强，从而降低集成电路在制造中的安装位置的关键性并延长 通过的铁磁制品与通过制品的适当检测的组件之间的间隙尺寸可以进行。 本文所用的术语“铁磁”是指相对磁导率大于1，优选大于100的任何材料。

公开(公告)号：US4751463A

公开(公告)日：1988-06-14

申请号：US56167

申请日：1987-06-01

申请人： Jacob K. Higgs ,  Hideki Kawaji ,  Ravi Vig

发明人： Jacob K. Higgs ,  Hideki Kawaji ,  Ravi Vig

IPC分类号： G05F3/26

CPC分类号： G05F3/265

摘要： An integrated circuit voltage regulator is of the kind having a pass transistor connected collector-to-emitter between the input V.sub.CC conductor and the regulated-voltage output conductor, a current source circuit supplying a base bias current to the pass transistor and a voltage reference and feedback regulator circuit connected between the output voltage conductor and the base of the pass transistor. A protective circuit against high voltage transients adding to V.sub.CC voltage comprises a transistor connected collector-to-emitter between the pass-transistor base and ground has a resistor paralleling the base-emitter junction, which resistor is resistively coupled to the input V.sub.CC line to shunt away the pass-transistor bias current whenever the V.sub.CC voltage level exceeds a value just under the latch-back breakdown voltage of the pass transistor. A zener diode directly connected across the DC input voltage conduction renders the regulator even more tolerant of high voltage transients.

摘要翻译： 集成电路电压调节器是在输入VCC导体和调节电压输出导体之间具有集电极到发射极的通过晶体管的类型，向传输晶体管提供基极偏置电流的电流源电路和电压基准， 反馈调节器电路连接在输出电压导体和传输晶体管的基极之间。 一个保护电路可以防止高电压瞬变增加VCC电压，包括在通过晶体管基极和地之间的集电极到发射极之间的晶体管连接有一个与基极 - 发射极并联的电阻，该电阻电阻耦合到输入VCC线分流 每当VCC电压电平超过传输晶体管的闭锁回击击穿电压以下的值时，传送晶体管偏置电流。 直流输入电压直接连接的齐纳二极管使调节器更容忍高电压瞬变。