Object counting method and apparatus

Details Object counting method and apparatus Object counting method and apparatus

1998-01-21

1999-11-09

Font, Frank G.

Optics: measuring and testing

By polarized light examination

With light attenuation

G01B 1104

Patent

active

059824956

ABSTRACT:
The present invention provides a method and apparatus for automatically counting objects, e.g., chips, that are arranged in a linear object sequence. The object sequence has a length that is proportional to the number of objects in the object sequence. In one embodiment of the counting method, the length of the object sequence is measured. The number of objects in the sequence are then determined from the measured length of the object sequence and the known length of a chip. In one embodiment of a counting apparatus, the apparatus has a scan station, a distance sensor, and a processor. The scan station has a scan zone that receives a plurality of object sequences. The distance sensor is operably aligned with the scan zone for measuring the length of each object sequence. The processor is communicatively connected to the distance sensor to determine and calculate the number of objects within the plurality of object sequences from the measured length of each object sequence.

REFERENCES:
patent: 3808692 (1974-05-01), Gartner
patent: 3813523 (1974-05-01), Mohan et al.
patent: 4217491 (1980-08-01), Dufford, Jr. et al.
patent: 4384195 (1983-05-01), Nosler
patent: 4481667 (1984-11-01), Price et al.
patent: 4807263 (1989-02-01), Ohno et al.
patent: 5032715 (1991-07-01), DeLise
patent: 5041721 (1991-08-01), Smith et al.

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