发明名称 |
SYSTEM FOR IDENTIFYING SELECTED LOCATIONS |
摘要 |
SYSTEM FOR IDENTIFYING SELECTED LOCATIONS A light source at each location emits light whose intensity has been modulated whereby to code the emitted light. Each location has a specific code to identify that location. A user has a receiver which receives the emitted light and decodes the code to thereby identify each of the selected locations.
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申请公布号 |
CA2026025(A1) |
申请公布日期 |
1991.03.26 |
申请号 |
CA19902026025 |
申请日期 |
1990.09.24 |
申请人 |
APRIL, GEORGES E.;KOLISH, EVELYN |
发明人 |
APRIL, GEORGES E.;DUFRESNE, ROBERT (DECEASED) |
分类号 |
G01S1/70;G01C21/26;(IPC1-7):H04B10/00 |
主分类号 |
G01S1/70 |
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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