公开(公告)号：US06400274B1

公开(公告)日：2002-06-04

申请号：US09426235

申请日：1999-10-25

申请人： Dah-Weih Duan ,  Daniel J. Friedman ,  Harley Kent Heinrich ,  Ian Bardwell-Jones ,  Lou Ruggiero

发明人： Dah-Weih Duan ,  Daniel J. Friedman ,  Harley Kent Heinrich ,  Ian Bardwell-Jones ,  Lou Ruggiero

IPC分类号： G08B1314

CPC分类号： H01Q1/2225 ,  G01S13/758 ,  G06K7/0008 ,  G06K19/0701 ,  G06K19/0723 ,  H01Q1/22 ,  H01Q21/29

摘要： An RFID tag's mobility can be increased and cost can be decreased by using high-performance mobile power antennas instead of battery powered tags. Disclosed are some power antennas that include a half wave rectifier, a full wave rectifier, and a voltage multiplier. These antennas can be cascaded to boost the power or voltage gain. Additionally, planar elements can be added to increase efficiency without decreasing mobility.

摘要翻译： 通过使用高性能移动电源天线而不是电池供电的标签，可以提高RFID标签的移动性并降低成本。 公开了一些功率天线，其包括半波整流器，全波整流器和电压倍增器。 这些天线可以级联以提高功率或电压增益。 此外，可以添加平面元件以提高效率而不降低移动性。

公开(公告)号：US5874902A

公开(公告)日：1999-02-23

申请号：US681741

申请日：1996-07-29

申请人： Harley Kent Heinrich ,  Peter George Capek ,  Thomas Anthony Cofino ,  Daniel J. Friedman ,  Kevin Patrick McAuliffe ,  Paul Jorge Sousa ,  Brian John Hugh Walsh

发明人： Harley Kent Heinrich ,  Peter George Capek ,  Thomas Anthony Cofino ,  Daniel J. Friedman ,  Kevin Patrick McAuliffe ,  Paul Jorge Sousa ,  Brian John Hugh Walsh

IPC分类号： G08B13/14 ,  H04Q1/00

CPC分类号： G08B13/1409

摘要： An RF tag has an enable/disable circuit connected to a critical part of an electronic object/circuit, e.g. a computer mother board. The critical part of the circuit is any circuit component and/or connection that can enable and/or disable the electric circuit operation. Signals are sent to the tag to change data in the tag memory which causes the enable/disable tag circuit to control the critical part to enable and disable the electric circuit. A system checks the status of the tag, e.g. the electronic circuit was paid for, before enabling the electronic circuit.

公开(公告)号：US5606323A

公开(公告)日：1997-02-25

申请号：US521898

申请日：1995-08-31

申请人： Harley K. Heinrich ,  Daniel J. Friedman

发明人： Harley K. Heinrich ,  Daniel J. Friedman

IPC分类号： H04B1/59 ,  G01S13/75 ,  G06K19/07 ,  H04Q1/18

CPC分类号： G06K19/0701 ,  G06K19/0723 ,  G01S13/758

摘要： A diode modulator which is not part of the rectifier power supply circuit of an RF Transponder is controlled by the transponder electronic logic and memory circuitry to conduct RF current from a second terminal to a first terminal of the RF Transponder antenna in a first state of the transponder electronic circuitry, and does not conduct appreciable current in a second state of the transponder electronic circuitry, thereby changing the loading of the RF Transponder antenna between the first state and the second state of the transponder electronic circuitry, and thereby changing the intensity of the RF radiation backscattered from the RF Tag. The present invention has further advantages that the same diode used as a modulator can also be used in the transponder receiver circuit.

摘要翻译： 不是RF转发器的整流器电源电路的一部分的二极管调制器由应答器电子逻辑和存储器电路来控制，以将RF电流从RF转发器天线的第二端子传导到第一状态 应答器电子电路，并且在应答器电子电路的第二状态下不会导致明显的电流，由此在应答器电子电路的第一状态和第二状态之间改变RF应答器天线的负载，从而改变 RF辐射从RF标签反向散射。 本发明还具有用作调制器的相同二极管也可用于应答器接收器电路中的另外的优点。

公开(公告)号：US4630763A

公开(公告)日：1986-12-23

申请号：US738449

申请日：1985-05-28

申请人： Daniel J. Friedman

发明人： Daniel J. Friedman

IPC分类号： A45F3/02 ,  A45F3/14 ,  G10G5/00 ,  A45F3/04

CPC分类号： A45F3/14 ,  G10G5/005 ,  A45F3/02 ,  Y10S224/91

摘要： One strap supports a fraction of the banjo weight from the banjo player's waist or hips. This strap is attached to the banjo at the two sides of the banjo resonator and passes around the player's torso. Two other straps support the remainder of the banjo weight from the player's shoulders. The weight carried by the shoulders is distributed in approximately equal fractions between the two shoulders. The shoulder straps are coupled in common to the top of the banjo resonator, pass respectively over the player's two shoulders and behind the player's back, and are there connected together. Two additional features are provided to permit the player to adjust the distribution of weight as between the player's torso and shoulders: (1) the torso strap and the shoulder straps are interconnected behind the player's back, and (2) the connection between the shoulder straps and the top of the resonator is through an adjustable linkage. The player controls the weight distribution by adjusting the linkage.

摘要翻译： 一个表带支撑从班卓琴手的腰部或臀部的班卓琴重量的一部分。 这个表带连接在班卓琴音箱两侧的班卓琴，并穿过玩家的躯干。 另外两根腰带支撑着玩家肩膀的剩余部分。 由肩膀承载的重量在两肩之间分布大致相等。 肩带共同连接到班卓琴音箱的顶部，分别通过玩家的两个肩膀和后面的玩家的背部，并在那里连接在一起。 提供两个附加功能，以允许玩家在玩家的躯干和肩膀之间调整重量分布：（1）躯干表带和肩带在玩家背后相互连接，（2）肩带之间的连接 并且谐振器的顶部通过可调节的连接。 玩家通过调整连杆来控制重量分布。