Method and apparatus for inspecting a printed circuit board

Details Method and apparatus for inspecting a printed circuit board Method and apparatus for inspecting a printed circuit board

1992-02-21

1993-11-09

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358101, 382 8, H04N 718

Patent

active

052607798

ABSTRACT:
A method and apparatus for inspecting articles such as printed circuit boards doubles the transport rate for the article under inspection, and modifies the manner in which acquired video images are processed to account for this change in rate. Primarily, this involves two modifications to existing video processing systems including a change in synchronization for obtaining the frames which are to be processed, and a selective exposure (i.e., shuttering) of the video cameras to the images which are to be acquired in order to avoid the acquisition of plural images in a single frame. Once acquired, the video images are stored and processed making use of techniques which substantially correspond to those previously employed by existing inspection devices of this general type.

REFERENCES:
patent: 4970597 (1990-11-01), Shepard
patent: 5060065 (1991-10-01), Wasserman

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