发明名称 |
METHOD AND APPARATUS FOR COMPARING DATA SIGNALS IN A CONTAINER INSPECTION DEVICE |
摘要 |
The present invention relates to an apparatus and method for generating a comparison signal representing the magnitude difference between two successive video signals representing adjacent inspection points on the container. The comparison signal is generated with a magnitude representing the ratio between the two video signals. The ratio is calculated with the one of the two video signals having the larger magnitude as the denominator. A comparison signal generated in this manner is insensitive to general light variations across the container. |
申请公布号 |
ZA8108355(B) |
申请公布日期 |
1982.11.24 |
申请号 |
ZA19810008355 |
申请日期 |
1981.12.02 |
申请人 |
OWENS ILLINOIS INC |
发明人 |
JUVINALL J |
分类号 |
G01B11/24;G01B11/30;G01N21/88;G01N21/90;G01N21/93;G01N21/94;H04N1/401 |
主分类号 |
G01B11/24 |
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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