JPS57132043A - Inspecting method for surface of travelling object - Google Patents
Inspecting method for surface of travelling objectInfo
- Publication number
- JPS57132043A JPS57132043A JP1694881A JP1694881A JPS57132043A JP S57132043 A JPS57132043 A JP S57132043A JP 1694881 A JP1694881 A JP 1694881A JP 1694881 A JP1694881 A JP 1694881A JP S57132043 A JPS57132043 A JP S57132043A
- Authority
- JP
- Japan
- Prior art keywords
- inspected
- screen
- picture
- electric charge
- region
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE:To reduce the capcity of a picture memory, by first detecting the position of the surface to be inspected within a screen by the signal output which is first read out and then leaving only the position of the surface to be inspected to mask the region within another screen by a masking means. CONSTITUTION:The electric charge according to the level of brightness of a corresponding picture element is stored in a capacitor C. This electric charge is read out by applying both the X and Y coordinate signals on the screen of the corresponding picture element as shown by the diagram. For instance, the electric charge is drawn out through a terminal 10 after opening switches 8 and 9 consisting of field effect transistors. In such constitution, the position of a surface to be inspected (a defect display picture) can be known on the screen. Then only the position of the surface to be inspected is left, and the region in another screen is masked by a masking means. Thus a picture is stored just by scanning the non-masking region to reduce the capacity of a picture memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1694881A JPS57132043A (en) | 1981-02-09 | 1981-02-09 | Inspecting method for surface of travelling object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1694881A JPS57132043A (en) | 1981-02-09 | 1981-02-09 | Inspecting method for surface of travelling object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57132043A true JPS57132043A (en) | 1982-08-16 |
Family
ID=11930346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1694881A Pending JPS57132043A (en) | 1981-02-09 | 1981-02-09 | Inspecting method for surface of travelling object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57132043A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62282250A (en) * | 1985-12-27 | 1987-12-08 | エイ・ティ・アンド・ティ・コーポレーション | Method and device for inspecting circuit board |
-
1981
- 1981-02-09 JP JP1694881A patent/JPS57132043A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62282250A (en) * | 1985-12-27 | 1987-12-08 | エイ・ティ・アンド・ティ・コーポレーション | Method and device for inspecting circuit board |
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