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. 发明授权

US4812822A Electronic article surveillance system utilizing synchronous integration 失效
标题翻译：电子物品监控系统采用同步整合
公开(公告)号：US4812822A
公开(公告)日：1989-03-14
申请号：US91423
申请日：1987-08-31
申请人： John F. Feltz , John W. Taylor , Richard S. Vuketich
发明人： John F. Feltz , John W. Taylor , Richard S. Vuketich
IPC分类号： G08B13/24
CPC分类号： G08B13/2414 , G08B13/2471 , G08B13/2488
摘要： An electronic article surveillance system employs a resonant tag attached to an article being protected. An interrogation transmitter whose transmission frequency is periodically swept through the resonant frequency of the tag is positioned near an exit of the protected area. The resonant tag is periodically energized by the transmitter as the transmitter frequency passes through the resonant frequency of the tag to cause the tag to emit a periodic tag signal at the sweep rate of the transmitter. The tag signal is received by a receiver that generates an alarm upon the detection of a tag signal. The receiver employs synchronous integration in the form of a dual channel synchronous video integrator to independently process positive and negative pulses of the tag signal in order to differentiate the tag signal from extraneous signals and noise.
摘要翻译：电子物品监视系统使用附着在被保护物品上的共振标签。传输频率周期性地扫过标签的谐振频率的询问发射机位于保护区域的出口附近。当发射机频率通过标签的谐振频率时，谐振标签被发射机周期性地激励，以使标签以发射机的扫描速率发射周期性标签信号。标签信号由接收机接收，在检测到标签信号时产生报警。接收机以双通道同步视频积分器的形式采用同步整合，以独立地处理标签信号的正和负脉冲，以便将标签信号与外来信号和噪声区分开来。

2. 发明授权

US4778552A Alarm tag and method of making and deactivating it 失效
标题翻译：报警标签及其制作和停用方法
公开(公告)号：US4778552A
公开(公告)日：1988-10-18
申请号：US41556
申请日：1987-04-22
申请人： S. Eugene Benge , Warren J. Pape , Richard S. Vuketich
发明人： S. Eugene Benge , Warren J. Pape , Richard S. Vuketich
IPC分类号： G06K19/067 , G08B13/24 , H01L21/70 , H05K1/16 , H05K3/04 , H05K3/20 , B32B31/28
CPC分类号： G08B13/242 , G06K19/0672 , G08B13/2437 , G08B13/244 , G08B13/2442 , H01L21/702 , H05K3/046 , H05K3/202 , H05K1/165 , H05K2203/0522 , H05K2203/1545
摘要： This invention relates to a deactivatable tag useable with an electronic article surveillance system and comprised of planar conductive material cut into a pair of inverse, first and second spiral conductors wrapped about each other and positioned for capacitive and inductive coupling. The invention also relates to method of making tags wherein conductors are cut from a planar web of conductive material in a continuous process in a manner that the cutting results in the formation of two spiral conductors without accompanying waste of conductive material, and thereafter positioning the conductors to provide resonant circuits.
摘要翻译：本发明涉及一种可用于电子物品监视系统的可失活标签，包括平面导电材料，该平面导电材料切割成一对相互缠绕并位于电容和电感耦合的反向，第一和第二螺旋导体。本发明还涉及制造标签的方法，其中以连续工艺从导电材料的平面网状物切割导体，使得切割导致形成两个螺旋导体而不伴随导电材料的浪费，然后定位导体以提供谐振电路。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式