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Appearance inspection apparatus and method in which plural threads are processed in parallel

  • US 6,987,894 B2
  • Filed: 04/25/2001
  • Issued: 01/17/2006
  • Est. Priority Date: 04/28/2000
  • Status: Expired due to Fees
First Claim
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1. An appearance inspection apparatus comprising:

  • a memory that stores image data of an appearance of an inspection target;

    a thread generator that generates k sets of n (k is a positive integer and n is an integer equal to or greater than

         2) threads in each of which procedures are described for respectively processing the image data in n sub-regions obtained by dividing one inspection region on the image data stored in said memory and storing a processing result into said memory; and

    a plurality of CPUs which executes said k sets of said n threads generated by said thread generator in parallel, respectively,wherein said thread generator further generates m (m is a positive integer) threads in each of which a procedure is described for collectively processing the image data in said n sub-regions, and one of said plurality of CPUs singly executes said m threads generated by said thread generator.

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