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    LOW POWER DIGITAL INPUT CIRCUIT
    1.
    发明专利
    LOW POWER DIGITAL INPUT CIRCUIT 失效

    公开(公告)号：JP2000134085A

    公开(公告)日：2000-05-12

    申请号：JP26117899

    申请日：1999-09-14

    Applicant: MICROCHIP TECH INC

    Inventor： SMIT WILLEM ,  VAN ROOYEN EMILE ,  VAN NIERKERK JOHANNES ALBERTUS

    IPC: H03K19/0175 ,  G11C7/10 ,  H03F1/02 ,  H03K19/00 ,  H03K19/0185 ,  H03K19/0948

    Abstract: PROBLEM TO BE SOLVED: To obtain an input circuit that reduces a power consumption rate of a digital circuit connecting to the input circuit. SOLUTION: An input buffer 10 minimizes a power consumption rate of a device connecting to the input buffer 10, and the input buffer 10 is provided with a combination of a current source 14 that limits a current within a cross conduction range and a saturation amplifier 12 that connects to the current source 14 and has an input gain substantially higher than the unity to increase a speed of a transmission function.

    INTEGRATED CIRCUIT HAVING SELF-BIAS AND SIGNAL PIN WIRELESS FREQUENCY SIGNAL INPUT
    2.
    发明专利
    INTEGRATED CIRCUIT HAVING SELF-BIAS AND SIGNAL PIN WIRELESS FREQUENCY SIGNAL INPUT 失效

    公开(公告)号：JP2001136099A

    公开(公告)日：2001-05-18

    申请号：JP2000291328

    申请日：2000-09-25

    Applicant: MICROCHIP TECH INC

    Inventor： MARNEWECK WILLEM ,  SCHIEKE PETER ,  SMIT WILLEM

    IPC: H04B1/59 ,  H03F1/30 ,  H03F3/195

    Abstract: PROBLEM TO BE SOLVED: To provide a wireless frequency transponder that effectively and skillfully utilizes an input output pin to connect a parallel resonance circuit on an integrated circuit package to a transponder circuit of the integrated circuit. SOLUTION: The wireless frequency transponder includes a wireless frequency tuning circuit having 1st and 2nd terminals and the integrated circuit having a 1st capacitor, a wireless frequency amplifier, 1st and 2nd current sources, and a bias control circuit. The 1st and 2nd current sources are connected to the wireless Frequency amplifier and generate the bias level of the amplifier and control The gain of the amplifier. The bias control circuit generate a bias level and is connected to the 1st and 2nd current sources, the integrated circuit has signal connection and common connection terminals and the input of the wireless frequency amplifier is connected to the signal connection terminal. The 1st capacitor is connected between the 1st terminal of the wireless frequency tuning circuit and the signal connection terminal and the 2nd terminal of the wireless frequency tuning circuit is connected to the common connection terminal.

    MICROCONTROLLER FOR PERFORMING CORE LOGIC POWER SHUT- DOWN WHILE KEEPING COMPLETENESS OF INPUT/OUTPUT PORT
    5.
    发明专利
    MICROCONTROLLER FOR PERFORMING CORE LOGIC POWER SHUT- DOWN WHILE KEEPING COMPLETENESS OF INPUT/OUTPUT PORT 失效

    公开(公告)号：JP2001184330A

    公开(公告)日：2001-07-06

    申请号：JP2000336638

    申请日：2000-11-02

    Applicant: MICROCHIP TECH INC

    Inventor： HOFHINE PAUL ,  SMIT WILLEM ,  BINGHAM GREGORY C

    IPC: G06F1/04 ,  G06F1/32 ,  G06F15/78

    Abstract: PROBLEM TO BE SOLVED: To provide a system, a method and a device for maintaining a control and/or status state while keeping power in an integrated circuit(IC) microcontroller. SOLUTION: A microcontroller IC 100 is provided with a microcontroller core logic 102, an input/output port logic 106 suited to the storage of an output logic level, an interface logic 104 connected between the microcontroller core logic 102 and the input/output port logic 106, and a power switch 110 connected to the microcontroller core logic 102. When a power source 108 is connected to the microcontroller core logic 102, the microcontroller core logic 102 controls the output logic level of the input/output port logic 106 and when the power source 108 is disconnected from the microcontroller core logic 102, the output logic level of the input/output port logic 106 maintains the same state as just before the disconnection of the power source 108 from the microcontroller core logic 102.

    A MULTI-FREQUENCY VOLTAGE REGULATING CIRCUIT INCORPORATING A MAGNETIC FIELD SENSOR AND PROGRAMMABLE MAGNETIC FIELD DETECTION
    9.
    发明申请
    A MULTI-FREQUENCY VOLTAGE REGULATING CIRCUIT INCORPORATING A MAGNETIC FIELD SENSOR AND PROGRAMMABLE MAGNETIC FIELD DETECTION 审中-公开
    包含磁场传感器和可编程磁场检测的多频电压调节电路

    公开(公告)号：WO9937039A3

    公开(公告)日：1999-11-18

    申请号：PCT/US9900936

    申请日：1999-01-15

    Applicant: MICROCHIP TECH INC

    Inventor： SCHIEKE PETER ,  SMIT WILLEM

    IPC: G01R33/02 ,  H02J7/00 ,  H02M7/219 ,  H04B5/02 ,  H04B5/00

    CPC classification number: H02M7/219 ,  H02M2007/2195 ,  Y02B70/1408

    Abstract: The highly efficient multi-frequency voltage regulating circuit is capable of converting magnetic field energy to electrical energy for charging either a battery or an energy storage device such as a capacitor. The invention provides a magnetic field sensor circuit that measures the strength of incoming magnetic field energy with respect to a reference current. The invention also provides for a programmable magnetic field detection circuit which is used to adjust the detection level of the inductor-capacitor magnetic field converter circuit. A discharge expediter circuit is provided to improve the efficiency of the magnetic field converter circuit by discharging excess energy.

    Abstract translation: 高效率的多频电压调节电路能够将磁场能量转换成用于对诸如电容器的电池或能量存储装置进行充电的电能。 本发明提供一种磁场传感器电路，其测量相对于参考电流的输入磁场能量的强度。 本发明还提供一种可编程磁场检测电路，用于调节电感器 - 电容器磁场转换器电路的检测电平。 提供放电加速器电路以通过放出多余的能量来提高磁场转换器电路的效率。

    SYSTEM FOR ENCODED RF AND ENCODED MAGNETIC FIELD COMMUNICATION AND METHOD THEREFOR
    10.
    发明申请
    SYSTEM FOR ENCODED RF AND ENCODED MAGNETIC FIELD COMMUNICATION AND METHOD THEREFOR 审中-公开
    用于编码RF和编码磁场通信的系统及其方法

    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。

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