US4953100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for inspecting packaged electronic device
Assignee: Omron Corp
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Filing: 1987-10-05
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Granted: 1990-08-28
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Expires: 2007-10-05
Abstract
Abstract A component-mounted printed circuit board inspecting apparatus comprises an imaging device for picking up images of printed circuit board. Land images are extracted from the image of a bare printed circuit board and that of a component-mounted printed circuit board. On the basis of the shapes of the land extracted from the bare printed circuit board and those of the component-mounted printed circuit board, the positional relationship between a comonent mounted on the printed circuit board and the land thereon is determined. This positional relationship is utilized to decide if the component is mounted properly on the printed circuit board.
Inventors
- 👤 Teruhisa Yotsuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:16
CPC Classifications
G; G06; G06T; G06T7/00; G06T7/0002; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/95; G01N21/956; G01N21/95684; G06T7/70; G06T2207/00; G06T2207/30; G06T2207/30108; G06T2207/30148
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A component-mounted printed circuit board inspecting apparatus, comprising: image taking means for producing images of a bare printed circuit board and a component-mounted printed circuit board; land extracting means for extracting conductor lands on which components are to be mounted from said images produced by the image taking means and for obtaining geometrical data of the conductor lands; positional relation determining means for determining positional relationships between the lands of the component-mounted board and components mounted thereon on the basis of said geometrical data obtained by the land extracting means; and decision means for deciding if placement of a component is proper based on said positional relationships obtained by the positional relation determining means.
Claim 2
Dependent Claim
114 words
A component-mounted printed circuit board inspecting apparatus, comprising: image taking means for producing images of a bare printed circuit board and a component-mounted printed circuit board; land extracting means for extracting conductor lands on which components are to be mounted from said images produced by the image taking means and for obtaining geometrical data of the conductor lands; positional relation determining means for determining positional relationships between the lands of the component-mounted board and components mounted thereon on the basis of said geometrical data obtained by the land extracting means; and decision means for deciding if placement of a component is proper based on said positional relationships obtained by the positional relation determining means.
Claim 3
Dependent Claim
31 words
A component-mounted printed circuit board inspecting apparatus according to claim 1, wherein said geometrical data obtained by said land extracting means is subjected to hue value conversion for the conductor lands.
Claim 4
Dependent Claim
99 words
A component-mounted printed circuit board inspecting apparatus, comprising: imaging means for taking first images of a printed circuit board; image extracting means for extracting second images within a plausible land existing area from said first images of a printed circuit board on the basis of previously inputted data concerning location and geometrical configuration of a component; land extracting means for extracting a land image from said second image; and decision means for deciding if placement of a component is proper based on said land image and said previously inputted data concerning the location and geometrical configuration of said component.
Claim 5
Dependent Claim
99 words
A component-mounted printed circuit board inspecting apparatus, comprising: imaging means for taking first images of a printed circuit board; image extracting means for extracting second images within a plausible land existing area from said first images of a printed circuit board on the basis of previously inputted data concerning location and geometrical configuration of a component; land extracting means for extracting a land image from said second image; and decision means for deciding if placement of a component is proper based on said land image and said previously inputted data concerning the location and geometrical configuration of said component.
Claim 6
Dependent Claim
30 words
A component-mounted printed circuit board inspecting apparatus according to claim 3, further including display means for displaying the result of a decision of proper or improper placement of a component.
Claim 7
Dependent Claim
30 words
A component-mounted printed circuit board inspecting apparatus according to claim 3, further including printer means for printing the result of a decision of proper or improper placement of a component.
References Cited (Backward Citations)
US4433385A
Cited
US4379308A
Cited
US4473842A
Cited
US4486777A
Cited
US4589139A
Cited
US4644584A
Cited
US4692943A
Cited
US4799175A
Cited
US4656510A
Cited
US4794647A
Cited
US4707734A
Cited
US4758782A
Cited
US4700225A
Cited
US4764969A
Cited
US4760444A
Cited
US4876656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |