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71. 发明授权

US07142838B2 Wake up device for a communications system 有权
标题翻译：用于通信系统的唤醒设备
公开(公告)号：US07142838B2
公开(公告)日：2006-11-28
申请号：US10869508
申请日：2004-06-15
申请人： Robert R. Rotzoll
发明人： Robert R. Rotzoll
IPC分类号： H04B1/16
CPC分类号： H04W52/0229 , H04W52/028 , H04W52/0293 , Y02D70/166
摘要： The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.
摘要翻译：本发明教导了包括用于接收数据和唤醒信号的第一通信设备的通信系统。第一通信设备包括主动操作模式和用于降低功耗的睡眠操作模式。此外，该系统包括用于响应于接收到唤醒信号而将第一通信设备切换到睡眠模式和从睡眠模式切换的装置。此外，该系统包括用于在其活动模式期间向第一设备发送数据的第二通信设备，同时在其睡眠模式期间将唤醒信号发送到第一设备。

72. 发明授权

US06989697B2 Non-quasistatic phase lock loop frequency divider circuit 有权
标题翻译：非准静态锁相环分频电路
公开(公告)号：US06989697B2
公开(公告)日：2006-01-24
申请号：US11030345
申请日：2005-01-06
申请人： Klaus Dimmler , Robert R. Rotzoll
发明人： Klaus Dimmler , Robert R. Rotzoll
IPC分类号： H03L7/06
CPC分类号： H03L7/091 , H03K3/0315 , H03L7/0995
摘要： A non-quasistatic MOS frequency divider circuit uses a phase lock loop configuration including an antenna coil to induce a differential input signal, an antenna resonating capacitor, a rectifier, a voltage controlled ring oscillator, a phase detector and a loop filter. All transistors used are organic MOS devices of PMOS, NMOS or both PMOS and NMOS varieties. The voltage-controlled oscillator includes a multiple delay stage ring oscillator. The phase detector includes transistors connected as sampling switches to sample the individual oscillator stage voltages into the loop filter. The sampling transistors have gates connected to the coil. The loop filter provides a substantially direct current to a loop amplifier and then to the voltage controlled oscillator delay control input. This configuration results in the voltage controlled oscillator frequency being synchronous to—and at a sub-multiple of the antenna signal frequency. The sampling transistor gates are all connected to the coil and thereby become part of the capacitance of the radio frequency parallel resonant network. The transistor gates are then efficiently switched at the rate of the radio frequency signal with no delay relative to the coil voltage. Operation of the phase detector organic transistors is based on non-quasistatic behavior of the transistor. Non-quasistatic operation results in phase detection at a frequency much higher than the quasistatic limit of transistor unity gain bandwidth.
摘要翻译：非准静态MOS分频器电路使用包括天线线圈以诱导差分输入信号的相位锁定环路配置，天线谐振电容器，整流器，压控环形振荡器，相位检测器和环路滤波器。所使用的所有晶体管是PMOS，NMOS或PMOS和NMOS品种的有机MOS器件。压控振荡器包括多个延迟级环形振荡器。相位检测器包括作为采样开关连接的晶体管，以将各个振荡器级电压采样到环路滤波器中。采样晶体管具有连接到线圈的栅极。环路滤波器向环路放大器提供基本上直流的电流，然后提供到压控振荡器延迟控制输入。该配置导致压控振荡器频率与天线信号频率同步并且处于天线信号频率的次倍。采样晶体管栅极都连接到线圈，从而成为射频并联谐振网络的电容的一部分。然后，晶体管栅极以无线电频率的速率相对于线圈电压没有延迟而高效地切换。相位检测器有机晶体管的操作基于晶体管的非准静态行为。非准静态运算导致相位检测的频率远高于晶体管单位增益带宽的准静态极限。

73. 发明授权

US06963059B2 Method and system for optimizing illumination power and integration time in an optical sensing device 有权
公开(公告)号：US06963059B2
公开(公告)日：2005-11-08
申请号：US10609686
申请日：2003-07-01
申请人： James Harold Lauffenburger , Gil Afriat , Robert R. Rotzoll
发明人： James Harold Lauffenburger , Gil Afriat , Robert R. Rotzoll
IPC分类号： G01J1/32 , G06F3/03 , G06F3/033
CPC分类号： G06F3/0317 , G01J1/32
摘要： There is described an optical sensing device, a method for controlling operation of an optical sensing device comprising a light source for illuminating a surface portion with radiation, a photodetector device having at least one photosensitive element responsive to radiation reflected from the illuminated surface portion, and conversion means for integrating an output signal of said at least one photosensitive element over time during an integration period of variable duration, which duration depends on power of the light source and level of radiation reflected from the illuminated surface portion. The optical sensing device further comprises a regulating system for controlling power if the light source as a function of a comparison between a parameter representative of the evolution of the integration of the output signal of the said at least one photosensitive element and at least one reference value. Regulation is advantageously performed by timing the duration of the integration period or by determining the rate of evolution of the integrated signal, comparing this duration or rate of evolution with at least one reference value and controlling power of the light source as a function of the result of the comparison. There is also described an optical pointing device implementing the above regulation scheme as well as an optical sensing device exploiting this scheme so as to sense proximity of the illuminated surface portion with respect to the optical sensing device.

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