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Method for Obtaining Mini Blocks on a Magnetic Bubble Chip

IP.com Disclosure Number: IPCOM000052769D
Original Publication Date: 1981-Jul-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Collins, TW Holmes, RD [+details]

Abstract

High density magnetic bubble chips with major/minor loop designs having double period propagators in the input and output major tracks result in minor loops separated by one drive field rotation instead of the usual two. As a result, bubbles arrive at the detector on every cycle, and an every-bit-detect scheme is required. However, detector performance can be improved with the use of a predetermined zero bit position to compare the bubble signal to. As a result, zero bit positions must be inserted into the bit stream.