Method and apparatus for testing magnetic bubble devices by vary

Details Method and apparatus for testing magnetic bubble devices by vary Method and apparatus for testing magnetic bubble devices by vary

1983-01-28

1984-07-10

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

365201, G01R 3312, G11C 700

Patent

active

044595492

ABSTRACT:
Disclosed herein is a method of testing a magnetic bubble device which guarantees allowable variation ranges for a variety of signal components of input signals applied to a magnetic bubble element when the magnetic bubble device is to be energized. A variety of signal components are varied in a testing cycle for writing, reading and collating information, whereby a plurality of combinations of the variety of signal components are obtained. The obtained input signals are continuously applied to the bubble element to effect the test.

REFERENCES:
patent: 3460109 (1969-08-01), Veneziano
patent: 4053751 (1977-10-01), Ault
patent: 4233668 (1980-11-01), Yamaguchi et al.
Besset et al., "Bubble Memories Demand Unique Test Methods", Electronics, May 1979, pp. 117-122.
Brownstein, "Tester for Bubble Memories, First in Field", Apr. 1979, pp. 167-168.
Iwasa et al., "Testing and Defects of Bubble Memory Devices", J. Appl. Phys. 50(3), Mar. 1979, pp. 2231-2233.

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