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34 条记录 (耗时 0.02 秒)

    Receiver circuit
    21.
    发明授权
    Receiver circuit 有权
    接收电路

    公开(公告)号：US07046122B1

    公开(公告)日：2006-05-16

    申请号：US09831128

    申请日：1999-11-04

    申请人： Ian J Forster

    发明人： Ian J Forster

    IPC分类号： H04Q5/22 ,  H04Q9/00 ,  H04B1/26

    CPC分类号： H03D11/08 ,  G01D4/004 ,  H03D11/04 ,  Y02B90/242 ,  Y04S20/322

    摘要： A detector receiver circuit for use as a wake-up detector for detecting an amplitude modulated carrier signal includes an antenna for receiving the modulated carrier signal; and a transistor, such as an FET, which is connected to the antenna and configured to operate as a detector of modulation of the carrier frequency. The circuit further comprises a resonator circuit which is also connected to the transistor and configured such that the transistor can simultaneously oscillate at substantially the modulation frequency; and an oscillator quenching circuit for periodically quenching oscillation of the transistor. The characteristics of the build-up of oscillation are sensed to indicate the presence of a modulated carrier signal. How quickly the magnitude of oscillation of the transistor builds up is dependent on whether the antenna is receiving a carrier signal which is modulated at the frequency of self-oscillation of the transistor, which is utilized to detect for the presence of a valid wake-up signal.

    摘要翻译： 用作检测调幅载波信号的唤醒检测器的检测器接收器电路包括用于接收调制载波信号的天线; 以及诸如FET的晶体管，其连接到天线并且被配置为作为载波频率的调制的检测器工作。 电路还包括谐振器电路，其也连接到晶体管并且被配置为使得晶体管可以基本上以调制频率同时振荡; 以及用于周期性地淬灭晶体管的振荡的振荡器淬灭电路。 感测到振荡建立的特性以指示调制的载波信号的存在。 晶体管的振荡幅度多快地建立起来取决于天线是否接收到以晶体管的自振荡频率进行调制的载波信号，该信号用于检测是否存在有效的唤醒 信号。

    Reflector circuit
    22.
    发明授权
    Reflector circuit 有权
    反射器电路

    公开(公告)号：US06456225B1

    公开(公告)日：2002-09-24

    申请号：US09674119

    申请日：2001-01-03

    申请人： Ian J Forster

    发明人： Ian J Forster

    IPC分类号： H01Q1500

    CPC分类号： G01S13/751 ,  G01S7/38 ,  G01S13/767 ,  G01S13/78 ,  G01S13/825

    摘要： A reflector circuit is provided which responds to illuminating radiation with corresponding output radiation of increased magnitude relative to the illuminating radiation, while also providing a frequency selective limiting characteristic. The circuit comprises an antenna for receiving the illuminating radiation and emitting the corresponding output radiation, a delay line providing a frequency selective limiting and signal storage characteristic and an amplifier assembly. The antenna provides an input signal upon receipt of the illuminating radiation, a portion of which is amplified, frequency selectively filtered and then stored for a period after which it is emitted as the output radiation from the circuit. Switches are incorporated and are operable to counteract spontaneous oscillation within the circuit.

    摘要翻译： 提供反射器电路，其响应于照射辐射，相对于照明辐射具有相应的输出辐射幅度，同时还提供频率选择性限制特性。 电路包括用于接收照明辐射并发射相应的输出辐射的天线，提供频率选择性限制和信号存储特性的延迟线和放大器组件。 该天线在接收到照射辐射时提供输入信号，其一部分被放大，频率选择性滤波，然后被存储一段时间，之后作为来自电路的输出辐射被发射。 开关被并入并且可操作以抵消电路内的自发振荡。

    Receiver circuit
    25.
    发明授权
    Receiver circuit 有权
    接收电路

    公开(公告)号：US07639118B2

    公开(公告)日：2009-12-29

    申请号：US11434569

    申请日：2006-05-15

    申请人： Ian J Forster

    发明人： Ian J Forster

    IPC分类号： H04Q5/22

    CPC分类号： H03D11/08 ,  G01D4/004 ,  H03D11/04 ,  Y02B90/242 ,  Y04S20/322

    摘要： A detector receiver circuit (2) for use as a wake-up detector for detecting an amplitude modulated carrier signal is described. The circuit (2) comprises: an antenna (4) for receiving the modulated carrier signal; a transistor (10), such as an FET, is connected to the antenna (4) and configured to operate as a detector of modulation of the carrier frequency. The circuit further comprises a resonator circuit (12-16) which is also connected to the transistor and configured such that the transistor (10) can simultaneously oscillate at substantially the modulation frequency; an oscillator quenching means (20) for periodically quenching oscillation of the transistor (10) and means (26, 28, 30) for sensing the characteristics of the build-up of oscillation to indicate the presence of a modulated carrier signal. How quickly the magnitude of oscillation of the transistor (10) builds up is dependent on whether the antenna is receiving a carrier signal which is modulated at the frequency of self-oscillation of the transistor and this is utilized to detect for the presence of a valid wake-up signal.

    摘要翻译： 描述了用作检测幅度调制载波信号的唤醒检测器的检测器接收器电路（2）。 电路（2）包括：用于接收调制载波信号的天线（4） 诸如FET的晶体管（10）连接到天线（4）并且被配置为作为载波频率的调制的检测器工作。 电路还包括谐振器电路（12-16），该谐振器电路也连接到晶体管并且被配置为使得晶体管（10）可以基本上以调制频率同时振荡; 用于周期性地淬灭晶体管（10）的振荡的振荡器猝灭装置（20）和用于感测振荡建立特性的装置（26,28,30），以指示调制的载波信号的存在。 晶体管（10）的振荡幅度多快地建立取决于天线是否正在接收以晶体管的自振荡频率调制的载波信号，并且这被用于检测是否存在有效的 唤醒信号。

    Vehicle tag reader
    26.
    发明授权
    Vehicle tag reader 有权

    公开(公告)号：US07586403B2

    公开(公告)日：2009-09-08

    申请号：US11385226

    申请日：2006-03-20

    申请人： Ian J Forster

    发明人： Ian J Forster

    IPC分类号： B60C23/00

    CPC分类号： G01P3/66 ,  B60C23/0408 ,  B60C23/0444

    摘要： A tire sensor that communicates to a remote interrogator in one of two modes depending on the nature of the interrogation. The interrogator may be distributed throughout a vehicle if needed for design options. Further, the interrogator only interrogates the transponder when the interrogator has reason to believe that the transponder is in range of the interrogator. The interrogator and transponder may be configured to operate in different modes for communication during operation of the tire on a vehicle and during non-operation. The transponder may communicate tire condition information to the interrogator concerning environmental or other information sensed about the tire.

    Reflecting modulator circuit comprising a negative impedance amplifier
    28.
    发明授权
    Reflecting modulator circuit comprising a negative impedance amplifier 有权
    反射调制器电路，包括负阻抗放大器

    公开(公告)号：US07551903B2

    公开(公告)日：2009-06-23

    申请号：US11434571

    申请日：2006-05-15

    申请人： Adrian N Farr ,  Ian J Forster

    发明人： Adrian N Farr ,  Ian J Forster

    IPC分类号： H04B7/15

    CPC分类号： H04L27/2039

    摘要： A modulator circuit comprises a negative impedance amplifier which is operable such that a signal applied to the amplifier is reflected and amplified. Switching means are provided for switching the impedance of the amplifier between two reflecting states such that the reflected and amplified signal is phase modulated. The impedances of the negative impedance amplifier are selected such that the phase of the reflected and amplified signal in the first reflecting state differs substantially from the phase of the reflected and amplified signal in a second reflecting state. For example, the phase switches by substantially 180 degrees. Preferably the impedances of the negative impedance amplifier in the two reflecting states are selected such that the reflection gain of the amplifier in the two reflecting states is substantially the same such that the reflected and amplified signal is a binary phase shift keyed.

    摘要翻译： 调制器电路包括负阻抗放大器，其可操作使得施加到放大器的信号被反射和放大。 提供了切换装置，用于在两个反射状态之间切换放大器的阻抗，使得反射和放大的信号被相位调制。 选择负阻抗放大器的阻抗，使得第一反射状态下的反射和放大信号的相位在第二反射状态下与反射和放大信号的相位显着不同。 例如，相位切换大致180度。 优选地，选择两个反射状态中的负阻抗放大器的阻抗，使得两个反射状态中的放大器的反射增益基本相同，使得反射和放大的信号是二进制相移键控的。

    Vehicle tag reader
    29.
    发明授权
    Vehicle tag reader 有权
    车载标签读卡器

    公开(公告)号：US07518494B2

    公开(公告)日：2009-04-14

    申请号：US11514748

    申请日：2006-08-31

    申请人： Ian J Forster

    发明人： Ian J Forster

    IPC分类号： B60C23/02

    CPC分类号： G01P3/66 ,  B60C23/0408 ,  B60C23/0444

    摘要： A tire sensor that communicates to a remote interrogator in one of two modes depending on the nature of the interrogation. The interrogator may be distributed throughout a vehicle if needed for design options. Further, the interrogator only interrogates the transponder when the interrogator has reason to believe that the transponder is in range of the interrogator. The interrogator and transponder may be configured to operate in different modes for communication during operation of the tire on a vehicle and during non-operation. The transponder may communicate tire condition information to the interrogator concerning environmental or other information sensed about the tire.

    摘要翻译： 一种轮胎传感器，其根据询问的性质以两种模式之一与远程询问器进行通信。 如果设计选项需要，询问器可以分布在整个车辆中。 此外，当询问器有理由认为应答器在询问器的范围内时，询问器仅询问应答器。 询问器和应答器可以被配置为在轮胎在车辆的操作期间和在非操作期间在不同的模式下操作以进行通信。 应答器可以将轮胎状况信息传达给与询问器相关的环境信息或关于轮胎的其他信息。