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    • 1. 发明授权
    • Dynamic configuration of a radio frequency transponder
    • 射频应答器的动态配置
    • US07602274B2
    • 2009-10-13
    • US11079719
    • 2005-03-14
    • Thomas Youbok LeeJames B. NolanSteve VernierRuan LourensVivien DelportAlan LamphierGlen Allen Sullivan
    • Thomas Youbok LeeJames B. NolanSteve VernierRuan LourensVivien DelportAlan LamphierGlen Allen Sullivan
    • H04Q5/22G05B19/00G06F7/04H04B1/00
    • G06K19/0723G06K19/0726G06K19/07767
    • A multi-channel remote keyless entry (RKE) transponder having dynamically re-configurable input channel selection, channel disable, settable sensitivity for each channel, wake-up filter timing parameters, automatic gain control hold, internal tuning capacitor selection for each channel's antenna, minimum modulation depth requirement for input signal and bi-directional talk-back. Programmable minimum modulation depth requirement reduces false wake-up of the RKE transponder. An antenna for each channel of the RKE transponder may be tuned with internal tuning capacitors for improved range and receiver sensitivity. The internal tuning capacitor parameters may be stored in a configuration register. Gain of the channel may be fixed while the antenna is tuned. The antennas may be de-queued for talk-back to a base station for low frequency bi-directional communications. An external control device may dynamically read from and write to the configuration registers via a serial communications interface.
    • 具有动态可重配置的输入通道选择,通道禁用,每个通道的可设置灵敏度,唤醒滤波器定时参数,自动增益控制保持,每个通道天线的内部调谐电容选择的多通道遥控无钥匙进入(RKE) 输入信号和双向对讲的最小调制深度要求。 可编程的最小调制深度要求可减少RKE转发器的假唤醒。 可以使用内部调谐电容器调整RKE应答器的每个通道的天线,以提高范围和接收机灵敏度。 内部调谐电容参数可以存储在配置寄存器中。 天线调谐时,通道的增益可能会固定。 天线可以被排队,用于与基站通话用于低频双向通信。 外部控制设备可以通过串行通信接口动态地读取和写入配置寄存器。
    • 2. 发明授权
    • Noise alarm timer function for three-axis low frequency transponder
    • 三轴低频转发器的噪声报警定时器功能
    • US07209030B2
    • 2007-04-24
    • US11079787
    • 2005-03-14
    • James B. NolanThomas Youbok LeeSteve VernierAlan Lamphier
    • James B. NolanThomas Youbok LeeSteve VernierAlan Lamphier
    • B60R25/10H04Q5/22
    • B60R25/24B60R25/406G07C9/00309G07C2009/00769
    • A remote keyless entry (RKE) transponder has a noise alarm timer having a time interval used for determining whether a received signal meets a predefined condition within a time interval. If the received signal meets the predefined condition within the time interval, the noise alarm timer is disabled and the RKE transponder circuits are enabled so that normal operation in processing the desired signal commences. If the received signal does not meet the predefined condition within the time interval the noise alarm timer issues an alert signal, whereby appropriate action may be taken such as adjusting the channel input sensitivity, disabling a channel, or placing the RKE transponder into a sleep mode in order to reduce the power consumption caused by undesired input signals. A smart wake-up filter determines whether or not the input signal meets the predefined condition within the time interval.
    • 远程无钥匙进入(RKE)转发器具有噪声报警定时器,其具有用于确定接收到的信号是否在时间间隔内满足预定义条件的时间间隔。 如果接收到的信号在时间间隔内满足预定义的条件,噪声警报定时器被禁止,并且RKE应答器电路被使能,使得处理所需信号的正常操作开始。 如果接收到的信号在时间间隔内不满足预定义的条件,则噪声报警定时器发出报警信号,由此可以采取适当的动作,例如调整通道输入灵敏度,禁用通道或将RKE应答器置于睡眠模式 以减少由不期望的输入信号引起的功耗。 智能唤醒滤波器确定输入信号是否在时间间隔内满足预定义的条件。
    • 5. 发明授权
    • Reference circuit using current feedback for fast biasing upon power-up
    • 使用电流反馈的参考电路,用于在上电时进行快速偏置
    • US6057721A
    • 2000-05-02
    • US065003
    • 1998-04-23
    • James B. NolanDavid Susak
    • James B. NolanDavid Susak
    • H03K17/22H03L7/00
    • H03K17/223
    • A fast start-up circuit for use in integrated circuits where there are internal nodes of reference circuits that need to be charged to a predetermined voltage level at a quicker rate than that delivered by the typical ramping up of supply power. The circuit a current driven approach, which is unique from the voltage driven approaches found in the prior art. The circuit is comprised of a high gain reference circuit and a current generator. The reference circuit is comprised of a bias generator and a high gain amplifier. The invention is characterized by a current generator which is capable of rapidly injecting relatively high levels of current into the reference circuit or sinking relatively high levels of current from the reference circuit or both. The invention is further characterized by a current driven feedback loop which deactivates the current generator once start-up is achieved and the high gain reference circuit approaches the quiescent point.
    • 用于集成电路的快速启动电路,其中存在参考电路的内部节点需要以比由典型的供电电源上升所传递的速率更快的速率被充电到预定电压电平。 该电路是电流驱动方法,其从现有技术中发现的电压驱动方法是独特的。 电路由高增益参考电路和电流发生器组成。 参考电路由偏置发生器和高增益放大器组成。 本发明的特征在于一种电流发生器,其能够将相当高水平的电流快速地注入参考电路或从参考电路或两者吸收相对高水平的电流。 本发明的特征还在于电流驱动的反馈回路,当启动启动时,电流发生器失效,而高增益参考电路接近静态点。
    • 6. 发明授权
    • On-chip frequency trimming method for real-time clock
    • 用于实时时钟的片上频率修整方法
    • US5327404A
    • 1994-07-05
    • US619146
    • 1990-11-27
    • James B. Nolan
    • James B. Nolan
    • G04G3/02G04B18/00
    • G04G3/02
    • Apparatus for digitally trimming the output frequency of a real-time clock is disclosed. The output frequency of a divider chain is adjusted by the contents of a trim constant register. The amount of correction and direction (slow or fast) to be effected is determined by the trim constant register. During "slow" real-time clock operation, the divider chain "shortens" the next second produced by the real-time clock. During "fast" real-time clock operation, the production of the next second is blocked and then a portion of the "blocked" signal is "added back" to effectively "lengthen" the next second produced by the real-time clock.
    • 公开了一种用于数字调整实时时钟的输出频率的装置。 分频器链的输出频率由修整常数寄存器的内容进行调整。 修正量和方向(慢或快)要由修整常数寄存器确定。 在“慢”实时时钟操作期间,分频器链“缩短”实时时钟产生的下一秒。 在“快速”实时时钟操作期间,下一秒的产生被阻塞,然后“阻塞”信号的一部分被“加回”以有效地“延长”由实时时钟产生的下一秒。
    • 8. 发明授权
    • Precision temperature sensor integrated circuit
    • 精密温度传感器集成电路
    • US6078208A
    • 2000-06-20
    • US85828
    • 1998-05-28
    • James B. NolanHartono Darmawaskita
    • James B. NolanHartono Darmawaskita
    • G01K7/01H01L35/00
    • G01K7/01
    • A precision temperature sensor produces a clock frequency which varies predictably over wide variations of ambient temperature. The invention has a oscillation generator, two independent current generators, a reference oscillator and a frequency counter. The outputs of the two independent current generators are combined to provide an approximately linear capacitor charging current which is directly proportional to changes in temperature. The capacitor charging current is used to drive the oscillation generator which outputs a clock frequency that is approximately linearly dependent on temperature with determinable slope and intercept. The frequency counter compares the output of the oscillation generator with the independent reference oscillator to compute a digital value for temperature. The precision temperature sensor is implemented on a single, monolithic integrated circuit.
    • 精密温度传感器产生在宽的环境温度变化下可预测地变化的时钟频率。 本发明具有振荡发生器,两个独立电流发生器,基准振荡器和频率计数器。 两个独立电流发生器的输出被组合以提供与线路温度变化成正比的近似线性的电容器充电电流。 电容器充电电流用于驱动振荡发生器,该振荡发生器输出大致线性关系的时钟频率,具有可确定的斜率和截距的温度。 频率计数器将振荡发生器的输出与独立的参考振荡器进行比较,以计算温度的数字值。 精密温度传感器在单个单片集成电路上实现。
    • 10. 发明授权
    • Microcontroller with on-chip linear temperature sensor
    • 具有片上线性温度传感器的微控制器
    • US5619430A
    • 1997-04-08
    • US541666
    • 1995-10-10
    • James B. NolanRussell E. CooperBrian Dellacroce
    • James B. NolanRussell E. CooperBrian Dellacroce
    • G01K7/01G05D23/19G06F11/30G06F15/78H02J7/00G06F9/22
    • G05D23/1917G06F11/3024G06F11/3058G06F11/3093H02J7/0004
    • A microcontroller for use in battery charging and monitoring applications is disclosed. The microcontroller includes a microprocessor and various front-end analog circuitry including a slope A/D converter and a multiplexer for allowing a plurality of analog input signals to be converted to corresponding digital counts indicative of signal level. The microcontroller further includes an on-chip temperature sensor, used in conjunction with the A/D converter, to monitor the temperature of the microcontroller. The temperature sensor generates and uses a differential voltage that is obtained across the base-emitter functions of two compatible bipolar transistors having dissimilar emitter areas. This differential voltage is proportional to temperature and may be sampled by the A/D converter to obtain a digital count indicative of the temperature of the microcontroller.
    • 公开了一种用于电池充电和监视应用的微控制器。 微控制器包括微处理器和各种前端模拟电路,其包括斜率A / D转换器和多路复用器,用于允许将多个模拟输入信号转换成指示信号电平的相应数字计数。 微控制器还包括与A / D转换器结合使用的片上温度传感器,以监视微控制器的温度。 温度传感器产生并使用在具有不同发射极区域的两个兼容双极晶体管的基极 - 发射极功能之间获得的差分电压。 该差分电压与温度成比例,可以由A / D转换器采样,以获得指示微控制器温度的数字计数。