Title:
DISTORTION CORRECTION METHOD IN AUTOMATIC OPTICAL INSPECTION DEVICE OF PRINTED CIRCUIT BOARD AND DEVICE THEREFOR
Document Type and Number:
Japanese Patent JP2733206
Kind Code:
B2
Abstract:
PURPOSE: To provide a method and a device which are used in an automatic optical inspection device of a printed circuit board and can compensate local distortion of the printed circuit board.
CONSTITUTION: A distortion compensation method in an automatic optical inspection device of a printed circuit board includes a step in which a data base signal on CAD design of a pattern constituent element on the printed circuit board is received as a pixel group signal which corresponds to a condition transition of pixel groups arranged per scanning line, a step S66 at which the printed circuit board is divided into small tile regions and the signal is obtained as a plurality of small tile region design signal arrays, a step S64 at which a data base signal which is scanned actually is obtained as a plurality of small tile region actual scanning signal arrays in the same way as the database signal on design, by scanning the printed circuit board which is completed, a step S70 at which arrays of the signal on design and the signal which is scanned actually are compared, a step at which a distortion vector signal which indicates positional changes of an actual position of a pixel of a pattern constituent element on the printed circuit board which is completed and a position on design is generated, and a step S74 at which a signal which is sent to the automatic optical inspection device and removes positional changes of the pixel which is scanned is generated.
Inventors:
RONARUDO JEI SUTOREIYAA
SUKOTSUTO PII SUNIIKA
PIITAA EMU UORUSHU
JEEMUSU PII KOORAA
SUKOTSUTO PII SUNIIKA
PIITAA EMU UORUSHU
JEEMUSU PII KOORAA
Application Number:
JP533695A
Publication Date:
March 30, 1998
Filing Date:
January 17, 1995
Export Citation:
Assignee:
GAABAA SHISUTEMUSU CORP
International Classes:
G01N21/88; G01B11/16; G01N21/93; G01N21/956; G01R31/28; G06T1/00; G06T7/00; H05K3/00; (IPC1-7): G01N21/88; G01B11/16; G06T7/00; H01L21/66; H05K3/00
Domestic Patent References:
| JP62261005A | ||||
| JP1274280A | ||||
| JP2105262A | ||||
| JP213837A | ||||
| JP5108800A |
Attorney, Agent or Firm:
Kunio Miura