JPS5633505A - Device for detecting abnormality of circuit pattern - Google Patents
Device for detecting abnormality of circuit patternInfo
- Publication number
- JPS5633505A JPS5633505A JP10836079A JP10836079A JPS5633505A JP S5633505 A JPS5633505 A JP S5633505A JP 10836079 A JP10836079 A JP 10836079A JP 10836079 A JP10836079 A JP 10836079A JP S5633505 A JPS5633505 A JP S5633505A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- camera
- signal
- circuit pattern
- abnormality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE: To simplify detecting device and widen the range of its utility, by using a TV camera of variable scanning direction to scan a circuit pattern in an optional direction, processing the output signal of the camera through a digital circuit and an abnormality extraction circuit and displaying an abnormal section on an output unit.
CONSTITUTION: A circuit pattern is scanned in a horizontal direction, for example, by a random access type TV camera 10 according to a scanning direction signal A or B from a scanning direction control circuit 14. The output signal of the TV camera is changed into a binary signal of 1's and 0's by a binary coding circuit 12. The binary signal is applied to an abnormality extraction circuit 12 so that the numbers of consecutive 1's and 0's of the signal are separately counted and compared with the minimum values of prescribed width and spacing for the pattern. The results of the comparison are applied to a computer 15, which performs synthetic analysis about the abnormality of the circuit pattern to indicate its abnormal section. The same inspection is effected by scanning in a vertical direction, for example. This results in simplifying detection device and making it flexible for wider utility to cope with the change in the type of machines.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10836079A JPS5633505A (en) | 1979-08-24 | 1979-08-24 | Device for detecting abnormality of circuit pattern |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10836079A JPS5633505A (en) | 1979-08-24 | 1979-08-24 | Device for detecting abnormality of circuit pattern |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5633505A true JPS5633505A (en) | 1981-04-04 |
Family
ID=14482753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10836079A Pending JPS5633505A (en) | 1979-08-24 | 1979-08-24 | Device for detecting abnormality of circuit pattern |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5633505A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60253854A (en) * | 1984-05-30 | 1985-12-14 | Toshiba Corp | Discrimination of printed circuit board |
-
1979
- 1979-08-24 JP JP10836079A patent/JPS5633505A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60253854A (en) * | 1984-05-30 | 1985-12-14 | Toshiba Corp | Discrimination of printed circuit board |
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