Patent ID: 6499126
Filing Date: 2002-12-24
Classification: G01R

Abstract:
A pattern generator that generates a test pattern used for testing an electric part comprising:a pattern memory that stores test pattern information, which defines said test pattern; a vector memory that stores a vector instruction, which indicates an order for reading out said test pattern information from said pattern memory; an address expansion unit that generates an address of said test pattern information in said pattern memory according to said vector instruction stored in said vector memory; an interruption pattern memory that stores interruption test pattern information, which defines said test pattern during a predetermined interruption process; an interruption vector memory, which is different from said vector memory, that stores an interruption vector instruction which indicates an order for reading out said interruption test pattern information from said interruption pattern memory; an interruption address expansion unit that generates an address of said interruption test pattern information according to said interruption vector instruction stored in said interruption vector memory; and a pattern generating unit that generates said test pattern based on said test pattern information corresponding to said address generated by said address expansion unit or said interruption test pattern information corresponding to said address generated by said interruption address expansion unit.