A system for the automatic visual inspection of bare-printed circuit boards

A system for automatic inspection of bare printed circuit boards is described that uses three concepts: multiple inspection systems; learn and inspect phases of inspection; a hierarchy of detection processes to satisfy the four basic criteria for a successful inspection system, namely detection performance, speed, cost, and flexibility. The system has reached a stage at which industrial implementation can be considered.

[1]  William A. Bentley.  The Inspectron: An Automatic Optical Printed Circuit Board (PCB) Inspector , 1979, Optics & Photonics.

[2]  K. G. Doyle.  Automatic Optical Inspection of Printed Circuit Boards , 1984 .

[3]  John F. Jarvis.  A Method for Automating the Visual Inspection of Printed Wiring Boards , 1980, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[4]  Nobuyuki Goto,et al.  An automatic inspection system for printed wiring board masks , 1980, Pattern Recognit..

[5]  Rainer M. Feiertag.  Real-Time Holography Of Printed Circuits , 1981, Other Conferences.

[6]  K. Kurihara,et al.  A highly reliable mask inspection system , 1980, IEEE Transactions on Electron Devices.

[7]  Larry S. Davis,et al.  A Corner-Finding Algorithm for Chain-Coded Curves , 1977, IEEE Transactions on Computers.

[8]  David T. Lee.  A Computerized Automatic Inspection System For Complex Printed Thick Film Patterns , 1978, Other Conferences.

[9]  Charles A. Harlow,et al.  Automatic Visual Inspection Of Printed Circuit Boards , 1979, Optics & Photonics.

[10]  A. Takaki,et al.  Automated Inspection System For Various Defects In Screen-Printed Patterns , 1979, Other Conferences.

[11]  T. Pavlidis,et al.  Visual printed wiring board fault detection by a geometrical method , 1979, COMPSAC.

[12]  M. P. Wirick,et al.  Infrared Testing Of Printed Circuit Boards And Hybrids , 1980, Photonics West - Lasers and Applications in Science and Engineering.

[13]  J. Bedford.  The Use of the Laser for the Inspection of Printed Circuit Boards and Laminates , 1980 .

[14]  Herbert Freeman,et al.  On the Encoding of Arbitrary Geometric Configurations , 1961, IRE Trans. Electron. Comput..

[15]  Charles C. K. Cheng.  Automated Recognition System For Industrial Quality Assurance , 1979, Optics & Photonics.