发明名称 |
Communication system for communicating with tags |
摘要 |
A communication system for identifying, locating, tracking and communicating for other purposes with large numbers of tags in a time and energy efficient manner. The tags are associated with items located in a communication region that is interrogated by an interrogator on a one-to-many basis using broadcast commands, on a one-to-one basis using directed commands or on a combination basis using both methods. Identification occurs through organized transmission and reception of signals between the tags and the interrogator. A batch collection protocol uses a combined one-to-many and one-to-one communication system that effectively resolves communication contentions. The batch collection protocol employs a plurality of collection periods which communicate with large or unknown numbers of portable tags.
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申请公布号 |
US5640151(A) |
申请公布日期 |
1997.06.17 |
申请号 |
US19930148552 |
申请日期 |
1993.11.08 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
REIS, ROBERT STEVEN;VERMA, VIKRAM;MIHOVILOVIC, DOMINGO ANTONIO;BERTRAND, PETER SCOTT;STEVENS, RICHARD KENNETH |
分类号 |
G01S13/74;G01S13/75;G01S13/76;G01S13/82;G06K7/00;G06K7/10;(IPC1-7):H04Q1/00 |
主分类号 |
G01S13/74 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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