专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP0245605A3 Identification system 失效
标题翻译：识别系统
公开(公告)号：EP0245605A3
公开(公告)日：1988-12-07
申请号：EP87103573
申请日：1987-03-12
申请人： Enguvu AG/SA/Ltd.
发明人： Katzenstein, Henry S.
IPC分类号： G01D05/20 , G06K07/08 , G06K19/06
CPC分类号： G06K7/0008 , G01D5/20
摘要： A reader identifies information, such as the identity of an object at a transponder, provided in binary form by the transponder. The reader initially generates a pulse which activates the transponder into transmitting a series of signals, such as by magnetic induction, to the reader. Upon each count of a particular number of signals in the reader, the reader generates an additional pulse which causes the transponder to transmit a new series of signals to the reader. The generation of the pulses by the reader may occur through the charge and discharge of energy in a storage member such as a capacitance. The series of signals produced by the transponder may have either a first frequency or a second frequency. The signals may be generated in each sequence at the first and second frequencies in an order dependent upon (a) the binary code identifying the object at the transponder and (b) the polarity of the pulse produced by the transponder in such sequence. The signals may be generated at the second frequency by connecting a capacitance across a coupling coil at the transponder. The reader then identifies the information by demodulating the signals received by it at the first and second frequencies. The reader is able to interrupt at any time the generation of the sequences of signals at the transponder when it does not receive the signals transmitted by the transponder. The reader then operates on a free running basis to generate pulses of opposite polarity at a relatively low frequency. In this way, the reader is constantly prepared to activate the transponder when the transponder becomes subsequently disposed within the effective range of the reader.
摘要翻译：阅读器识别信息，例如应答器以二进制形式提供的应答器上的对象的标识。读取器最初产生一个脉冲，该脉冲激活发送应答器以将一系列信号（例如通过磁感应）发送给读取器。在读取器中每次计数特定数量的信号时，读取器生成附加的脉冲，这使得应答器向读取器发送新的一系列信号。阅读器产生的脉冲可以通过诸如电容的存储构件中的能量的充电和放电来发生。由应答器产生的一系列信号可以具有第一频率或第二频率。可以按照（a）在应答器处识别物体的二进制码和（b）由应答器以这种顺序产生的脉冲的极性的顺序，在第一和第二频率的每个序列中产生信号。通过在应答器处连接穿过耦合线圈的电容，可以以第二频率产生信号。阅读器然后通过解调由第一和第二频率接收的信号来识别信息。当读写器没有接收到应答器发送的信号时，阅读器能够随时中断在应答器上产生的信号序列。然后阅读器以自由运行的方式运行，以相对较低的频率产生相反极性的脉冲。通过这种方式，当应答器随后被置于阅读器的有效范围内时，阅读器不断准备启动应答器。

IPRDB

热门服务

关于我们

友情链接

联系方式