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公开(公告)号：US06549371B1
公开(公告)日：2003-04-15
申请号：US09510910
申请日：2000-02-23
IPC分类号： G11B1500
CPC分类号： G11B15/16
摘要： An apparatus and method for determining the position of magnetic tape within a magnetic tape cassette to ascertain whether the magnetic tape is in a rewound position within the cassette is provided. In a first aspect of the present invention, the magnetic tape cassette has two internal magnetic tape take-up reels. The magnetic tape stored on the tape-up reels is detected. The rewound status of the tape is determined by whether the magnetic tape is detected on only one reel or on both reels. In a second aspect of the present invention, a preselected amount of magnetic tape is detected within the magnetic tape cassette. The magnetic tape cassette is oriented and the position of the detected magnetic tape is determined relative to the orientation of the magnetic tape cassette. In a third aspect of the present invention, an electronically detectable member positioned in a known location of the cassette is detected. A preselected amount of magnetic tape within the cassette is detected. The time difference between the detection of the magnetic tape and the detection of the electronically detectable member is used to determine the position of the magnetic tape relative to the cassette. The electronically detectable member can be an electronic article surveillance marker.
摘要翻译： 提供一种用于确定磁带盒内的磁带的位置以确定磁带是否处于盒内的重绕位置的装置和方法。 在本发明的第一方面中，磁带盒具有两个内部磁带卷取卷轴。 检测存储在磁带卷轴上的磁带。 磁带的倒带状态是通过仅在一个卷轴上还是在两个卷轴上检测磁带来确定的。 在本发明的第二方面中，在磁带盒内检测预选量的磁带。 磁带盒被取向，并且检测到的磁带的位置是相对于磁带盒的取向来确定的。 在本发明的第三方面中，检测位于盒的已知位置的电子可检测部件。 检测到盒内的预选量的磁带。 使用磁带的检测与电子可检测部件的检测之间的时间差来确定磁带相对于盒的位置。 电子可检测构件可以是电子物品监视标记。
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22.发明授权Multi-bit EAS marker powered by interrogation signal in the eight MHz band 失效多位EAS标记由8 MHz频段的询问信号供电
公开(公告)号：US5625341A
公开(公告)日：1997-04-29
申请号：US522023
申请日：1995-08-31
CPC分类号： G08B13/2431
摘要： A multi-bit electronic article surveillance marker includes an antenna circuit and is powered by an interrogation field generated by EAS detection equipment and received by the marker's antenna circuit. The marker generates a multi-bit signal by selectively disturbing the interrogation field. The disturbances may be created by selectively short circuiting the marker's antenna circuit. All of the marker circuitry, including a coil that is part of the antenna circuit, may be provided as circuit elements formed on a semiconductor integrated circuit substrate.
摘要翻译： 多位电子物品监视标记包括天线电路，由EAS检测设备产生的询问场供电，并由标记的天线电路接收。 标记通过选择性地干扰询问场来产生多位信号。 干扰可以通过选择性地短路标记的天线电路来产生。 包括作为天线电路的一部分的线圈的所有标记电路可以被设置为形成在半导体集成电路基板上的电路元件。
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公开(公告)号：US5517195A
公开(公告)日：1996-05-14
申请号：US306152
申请日：1994-09-14
CPC分类号： G08B13/2425 , G08B13/2431 , G08B13/2437 , G08B13/2448
摘要： A dual frequency microwave EAS tag includes a dual frequency antenna circuit formed on one side of a substrate. The antenna circuit includes a diode. A deactivation circuit is formed on the other side of the substrate. A conductive connection passes through a hole in the substrate and connects the deactivation circuit to the antenna circuit. The deactivation circuit responds to a low energy ac magnetic field by inducing a voltage in the diode of the antenna circuit so as to disable the diode, thereby deactivating the tag without requiring the tag to be placed in direct contact with a disabling device.
摘要翻译： 双频微波EAS标签包括形成在基板一侧的双频天线电路。 天线电路包括二极管。 在基板的另一侧上形成失活电路。 导电连接通过衬底中的孔，并将去激活电路连接到天线电路。 停用电路通过在天线电路的二极管中感应电压来响应低能量交流磁场，以便禁用二极管，从而使标签停用，而不需要将标签放置成与禁用装置直接接触。
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公开(公告)号：US5103234A
公开(公告)日：1992-04-07
申请号：US657899
申请日：1991-02-20
申请人： Harry E. Watkins , Brent F. Balch , Jeffrey T. Oakes , Richard L. Copeland , Hubert A. Patterson , Mart Martinson
发明人： Harry E. Watkins , Brent F. Balch , Jeffrey T. Oakes , Richard L. Copeland , Hubert A. Patterson , Mart Martinson
CPC分类号： G08B13/2408 , G01V15/00 , G08B13/2471 , G08B13/2474 , G08B13/2477 , G08B13/2482 , G08B13/2488
摘要： A magnetic article surveillance system utilizing microcomputer control and unique time domain and frequency domain information gathering channels whose information is processed by the microcomputer via preselected time domain and frequency domain criteria.
摘要翻译： 一种利用微机控制和独特的时域和频域信息采集通道的磁性物品监控系统，其信息由微型计算机通过预选的时域和频域标准处理。
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25.发明授权Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation 失效采用时域和/或频域分析和电脑化操作的电子物品监控系统
公开(公告)号：US4859991A
公开(公告)日：1989-08-22
申请号：US091052
申请日：1987-08-28
申请人： Harry E. Watkins , Brent F. Balch , Jeffery T. Oakes , Richard L. Copeland , Hubert A. Patterson , Mart Martinson
发明人： Harry E. Watkins , Brent F. Balch , Jeffery T. Oakes , Richard L. Copeland , Hubert A. Patterson , Mart Martinson
CPC分类号： G08B13/2408 , G01V15/00 , G08B13/2471 , G08B13/2474 , G08B13/2477 , G08B13/2482 , G08B13/2488
摘要： A magnetic article surveillance system utilizing microcomputer control and unique time domain and frequency domain information gathering channels whose information is processed by the microcomputer via preselected time domain and frequency domain criteria.
摘要翻译： 一种利用微机控制和独特的时域和频域信息采集通道的磁性物品监控系统，其信息由微型计算机通过预选的时域和频域标准处理。
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26.发明授权Mobile vehicular repeater system which provides up-link acknowledgement signal to portable transceiver at end of transceiver transmission 失效移动车载中继器系统，其在收发机传输结束时向便携式收发信机提供上行确认信号
公开(公告)号：US4539706A
公开(公告)日：1985-09-03
申请号：US463587
申请日：1983-02-03
CPC分类号： H04W88/02 , H04B7/155 , H04B7/2606
摘要： A mobile vehicular repeater detects the termination of a received transmission from a portable transceiver to be repeated and, in response to such detection, activates the up-link radio transmitter so as to send an acknowledgement signal to the message originating portable transceiver station signifying the probable successful conclusion of a repeating operation. Special techniques are utilized to prevent confusion between such an acknowledgement signal and similar prioritizing transmissions on the up-link frequency.
摘要翻译： 移动车载中继器检测从便携式收发器接收到的传输的终止以被重复，并且响应于这种检测激活上行链路无线电发射机，以向确定信号发送确认信号，该消息始发的便携式收发台表示可能的 圆满结束重复操作。 利用特殊技术来防止这种确认信号与上行链路频率上类似的优先级传输之间的混淆。
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公开(公告)号：US4020421A
公开(公告)日：1977-04-26
申请号：US669634
申请日：1976-03-23
摘要： In radio communication systems transmitting voice and data, data is frequently transmitted at the beginning of the transmission, and this may then be followed by voice. The sound of the data in the receiver loudspeaker is unnecessary and often annoying. This sound is eliminated by a muting circuit which initially mutes the receiver for a predetermined time following receipt of a carrier signal, and then mutes the receiver when data is detected. After the data ends, the receiver is unmuted if a carrier is still present.
摘要翻译： 在传输语音和数据的无线电通信系统中，在传输开始时频繁地发送数据，然后可以跟随着语音。 接收机扬声器中的数据声音是不必要的，而且常常令人厌烦。 这种声音通过静音电路消除，该静噪电路在接收到载波信号之后将预定时间静音接收机，然后在检测到数据时使接收机静音。 数据结束后，如果载波仍然存在，则接收机将被取消静音。
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公开(公告)号：US20190334740A1
公开(公告)日：2019-10-31
申请号：US16309609
申请日：2016-06-15
摘要： In a fire alert system energy is harvested from a wire line pair (408) used to provide primary electrical power from a fire panel central monitoring station to a plurality of remote devices (406). The fire panel central monitoring station begins communications with a remote device by modulating the voltage on the wire line pair so as to communicate a first message (502) to one of the plurality of remote devices. Thereafter, one of the remote devices will respond to the first message with a second message (504) by modulating the voltage on the line pair. Energy is selectively harvested from the wire line pair at one or more of the remote devices in accordance with the remote device address specified in the first message.
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公开(公告)号：US10402887B2
公开(公告)日：2019-09-03
申请号：US15400675
申请日：2017-01-06
摘要： Systems and methods for managing inventory. The methods comprise: generating sensor data by an Electronic Smart Tag (“EST”); processing, by the EST or a computing device remote from the EST, the sensor data to transform the same into information specifying at least one of a first person's intention with regard to an item to which the EST is coupled and the first person's interest in the item; generating a notification or a recommendation relating to inventory management, based on at least one of the first person's intention with regard to the item and the first person's interest in the item; and providing the notification or recommendation to a second person.
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公开(公告)号：US20190197853A1
公开(公告)日：2019-06-27
申请号：US16221695
申请日：2018-12-17
CPC分类号： G08B13/2402 , G06K7/10366 , G06K19/0709 , G06K19/0723 , G08B13/2417 , G08B13/2462
摘要： Systems and methods for managing a tag. The methods comprise: placing the tag in a first operational mode in which an internal component (“IC”) necessary to facilitate communication between the tag and a tag reader (“TR”) are intentionally disabled; storing in the tag's data store a schedule specifying a scheduled time during which the tag is permitted to communicate with TR; selectively enabling IC at the scheduled time to permit the tag to communicate with TR; performing monitoring operations at the tag to determine when a predetermined condition has been detected; and causing the tag to autonomously perform an alerting function when the predetermined condition has been detected. The alerting function comprises (a) enabling a receiver of the tag to communicate with TR at an unscheduled time, and/or (b) activating an alert by enabling a hardware alerting component provided on the tag.
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