发明名称 |
OPTICAL SCANNING ARRANGEMENT AND ARTICLE USEFUL THEREWITH |
摘要 |
<p>An article of manufacture to be read by optical scanning equipment comprising an information medium on which are a plurality of concentric annuli in two optically contrasting colors representing binary ones and binary zeroes, the pattern of ones and zeroes differing on either side of an imaginary diameter line.</p> |
申请公布号 |
CA1075815(A) |
申请公布日期 |
1980.04.15 |
申请号 |
CA19740195928 |
申请日期 |
1974.03.22 |
申请人 |
RCA CORPORATION |
发明人 |
NICKL, FRANKLYN G.;SCHANNE, JOSEPH F. |
分类号 |
G06K7/10;(IPC1-7):06K7/10 |
主分类号 |
G06K7/10 |
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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