Method and device for radio identification and tracking |
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| 申请号 | JP14317891 | 申请日 | 1991-06-14 | 公开(公告)号 | JPH04232488A | 公开(公告)日 | 1992-08-20 |
| 申请人 | Savi Technol Inc; | 发明人 | ROBAATO ESU REISU; RICHIYAADO KEI SUTEIIBUNSU; | ||||
| 摘要 | PURPOSE: To provide a method and a device for identifying items and tracking them, by adding a radio transceiver tag on the item and sending a signal between the tag and one or more interrogator sub-systems. CONSTITUTION: A tag is usually set under a low power stand-by mode unless a signal is sent by an interrogator. The interrogator carries the signal to all the tags within the receiving range, and the tag responds to it after a false random lag. When the interrogator identifies the tag, it returns the fact to the tag and the tag returns to the stand-by mode. The tag which is not identified by the interrogator sends the identifying signal again, and the process continues until all the tags within the range of the interrogator are identified. COPYRIGHT: (C)1992,JPO |
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| 权利要求 | |||||||
| 说明书全文 | |||||||
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