PATTERN GENERATOR FOR CREATING PATTERN SIGNAL,申请号JP19980333317-传众专利搜索

PATTERN GENERATOR FOR CREATING PATTERN SIGNAL

申请公布号：JP2000162287(A)

申请号：JP19980333317

申请日期：1998.11.24

申请公布日期：2000.06.16

申请人：

ADVANTEST CORP

发明人：SHIMURA MICHIO;SUZUKI MASAYUKI

分类号：G01R31/3183;(IPC1-7):G01R31/318

主分类号：G01R31/3183

摘要：PROBLEM TO BE SOLVED: To provide a pattern generator capable of creating pattern signals at a high speed. SOLUTION: A pattern generator 10 is provided with a sequence control part 50, FIFO-type memory 60, a pattern creating part 70, and a clock circuit 84. Memory 52 for sequence stores a compressed sequence program. Each constitution of the sequence control part 50 operates in synchronization with a clock signal 28. Pattern memory 78 stores test patterns to be supplied for a device to be tested 40 in advance. A pattern counter control part 74 is operated, in synchronization with a higher-speed clock signal 80 than the clock signal 28 by the clock circuit 84. The sequence control part 50 expands the compressed sequence program and outputs the expanded sequence program to the FIFO-type memory 60. The pattern counter control part 74 reads the expanded sequence program from the FIFO-type memory 60 at a high speed. By having the sequence control part 50 and the pattern creating part 70 operate with different independent clock signals, it becomes possible to create pattern signals at high speed.