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1. 发明申请

US20110248834A1 METHOD AND SYSTEM FOR LOW COST, POWER EFFICIENT, WIRELESS TRANSPONDER DEVICES WITH ENHANCED FUNCTIONALITY 失效
公开(公告)号：US20110248834A1
公开(公告)日：2011-10-13
申请号：US12757094
申请日：2010-04-09
申请人： Robert WARNER , James Wang , Jack Winters , Ashok Waddodagi , Jin Yu , Yuzheng Zhang
发明人： Robert WARNER , James Wang , Jack Winters , Ashok Waddodagi , Jin Yu , Yuzheng Zhang
IPC分类号： H02J13/00 , H04Q5/22 , G08C19/16
CPC分类号： H04Q9/00 , H04Q2209/47
摘要： This invention provides a method and system for inventorying wireless transponders, specifically referred to as RFID transceiver devices. The RFID transceiver devices are certifiable by a recognized standards body, such as EPCglobal, or are compatible with recognized standards but have higher functionality than typical passive RFIDs, and yet are implemented with techniques that lower cost and battery requirements. Backscatter techniques of standard passive RFIDs are used to keep cost and battery requirements low. To provide higher functionality, a microcontroller is used in the RFID, along with a battery, but the clock frequency of the microcontroller is adjusted, based on external input, to minimize battery requirements. In one embodiment, the microcontroller initially has a zero or near zero clock frequency. A comparator compares the received RF energy to a threshold, and when the threshold is exceeded, indicating the presence of a probe signal from an RFID reader, the microcontroller clock frequency is immediately increased, and further adjusted based on the received data. In an alternate embodiment, the clock frequency of the microcontroller is adjusted based on data from sensors, to keep the clock speed at the proper speed to adequately process the data while minimizing the power requirement of the microcontroller, and then create an input to modulate the backscattered signal to be transmitted by the RFID. The received data can also cause the microcontroller to request the sensors to generate sensing data at a faster rate, which in turn requires the microcontroller clock to increase to handle the increased sensor data. In an additional embodiment, multiple sensors are multiplexed to provide a single input stream to the microcontroller, reducing the microcontroller clock speed required, along with the overall cost of the microcontroller and sensors.

2. 发明授权

US08390433B2 Method and system for low cost, power efficient, wireless transponder devices with enhanced functionality 失效
标题翻译：具有增强功能的低成本，高功率，无线应答器设备的方法和系统
公开(公告)号：US08390433B2
公开(公告)日：2013-03-05
申请号：US12757094
申请日：2010-04-09
申请人： Robert Warner , James Wang , Jack Winters , Ashok Waddodagi , Jin Yu , Yuzheng Zhang
发明人： Robert Warner , James Wang , Jack Winters , Ashok Waddodagi , Jin Yu , Yuzheng Zhang
IPC分类号： H04Q5/22
CPC分类号： H04Q9/00 , H04Q2209/47
摘要： A method and system for inventorying wireless transponders, specifically referred to as RFID transceiver devices. To provide higher functionality, a microcontroller is used in the RFID, along with a battery, but the clock frequency of the microcontroller is adjusted, based on external input, to minimize battery requirements. The RFID transceiver device includes at least one sensor coupled to the microcontroller. Data from the at least one sensor is stored in non-volatile memory of the microcontroller if the battery is at a predetermined low level, and is read later when the battery is at a higher level.
摘要翻译：用于存储无线应答器的方法和系统，特别称为RFID收发器设备。为了提供更高的功能，在RFID中使用微控制器以及电池，但是基于外部输入调整微控制器的时钟频率以最小化电池需求。 RFID收发器设备包括耦合到微控制器的至少一个传感器。如果电池处于预定的低电平，则来自至少一个传感器的数据被存储在微控制器的非易失性存储器中，并且当电池处于较高电平时被读取。

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