公开(公告)号：WO9957676A8

公开(公告)日：2000-01-06

申请号：PCT/US9909893

申请日：1999-05-06

Applicant: MICROCHIP TECH INC

Inventor： BRUWER FREDERICK J ,  SMIT WILLEM ,  VAN NIEKERK JOHANNES A

IPC: G06K7/10 ,  G06K17/00 ,  G06K19/07 ,  G07C9/00 ,  G08B25/10 ,  H02J17/00 ,  H04B1/04 ,  H04B5/02 ,  G06K7/00

CPC classification number: G06K19/0701 ,  G06K19/0723 ,  G07C9/00309 ,  G07C2009/00603 ,  G07C2009/00777 ,  G07C2009/00793

Abstract: A wireless security system combines encoded RF and encoded magnetic field operation into a base unit device and a remote unit device, overcoming the limitations of RF only or magnetic field only wireless security devices. The base unit is comprised of a power supply, a base processing unit, an RF receiver and a base inductor-capacitor (LC) transceiver. The base processing unit is capable of controlling both encoded RF and encoded magnetic field operation. The remote unit is comprised of a battery, a remote processing unit, an RF transmitter, a remote magnetic field converter circuit, manual control and an energy storage device. The remote processing unit, which is capable of controlling both encoded RF and encoded magnetic field operation, is implemented on a single, monolithic integrated circuit. The remote unit device can be miniaturized to relative smallness to the extent that it can be embedded, for example, within an automobile key. The remote unit device can convert magnetic field energy to DC electrical energy for the purposes of supplying power to the remote unit device, conserving battery power and re-charging the battery.

Abstract translation: 无线安全系统将编码的RF和编码磁场操作组合到基本单元设备和远程单元设备中，克服仅限RF或仅磁场无线安全设备的限制。 基本单元由电源，基本处理单元，RF接收器和基本电感器 - 电容器（LC）收发器组成。 基本处理单元能够控制编码的RF和编码的磁场操作。 远程单元由电池，远程处理单元，RF发射器，远程磁场转换器电路，手动控制和能量存储装置组成。 能够控制编码RF和编码磁场操作两者的远程处理单元被实现在单个单片集成电路上。 远程单元设备可以相对较小地小型化到可以嵌入在例如汽车钥匙内的程度。 远程单元设备可以将磁场能量转换为直流电能，以便为远程单元设备供电，节省电池电力并对电池重新充电。