Global Patent Index - EP 1076831 A2

EP 1076831 A2 2001-02-21 - CIRCUIT BOARD ASSEMBLY INSPECTION

Title (en)

CIRCUIT BOARD ASSEMBLY INSPECTION

Title (de)

INSPEKTION EINER LEITERPLATTE

Title (fr)

CONTROLE D'UN ENSEMBLE PLAQUETTE DE CIRCUIT

Publication

EP 1076831 A2 (EN)

Application

EP 99904998 A

Priority

  • GB 9900409 W
  • GB 9803179 A
  • GB 9818768 A

Abstract (en)

[origin: WO9941621A2] Circuit board assemblies (6) consisting of printed circuit boards (7) to which surface mounted components (8) have been mounted are visually inspected by comparison with a reference circuit board assembly. A reference image (81) is visually compared with a test image (80) using the display (64) of a personal computer (63). Image data is acquired in each case by use of an optical scanner (2) in the form of a flatbed scanner. The circuit board assemblies are positioned during scanning so as to locate a major surface of the circuit board and the surface mounted components within an imaging region (44) of the scanner. Alignment of images is automatically effected by the computer so as to display images using a common frame of reference defined relative to fiducial features of the circuit board assemblies. During scanning, the boards may be supported in an upwardly facing or inverted position within a light excluding enclosure. The method has application to small and medium scale production facilities of printed circuit board assemblies.

IPC 1-7 (main, further and additional classification)

G01R 31/309

IPC 8 full level (invention and additional information)

G01N 21/956 (2006.01)

CPC (invention and additional information)

H05K 13/08 (2013.01)

Citation (search report)

See references of WO 9941621A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9941621 A2 19990819; WO 9941621 A3 19991111; AU 2531199 A 19990830; EP 1076831 A2 20010221

INPADOC legal status


2002-06-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011129

2001-07-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010518

2001-02-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001120

2001-02-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE