NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Press Enter or click the Search button to begin your search.

Back to Results
Bubble domain circuit organizationAn on-chip bubble domain circuit organization. One or more storage registers are connected to a propagation path whereby data in the form of magnetic bubble domains (bubbles) may be transferred into and out of the storage registers. The propagation path includes a generator for producing the initial bubbles which are expanded into any desired number of new bubbles by a unique multiple output replicator. A unique input decoder is utilized to determine to which storage register the bubbles from the replicator will be directed along the propagation path. Those bubbles not selected may be annihilated. An output decoder utilizing essentially the same decoding scheme as the input decoder, selectively receives bubbles from the storage register. A transfer and replicate switch is utilized between the storage register and output decoder to selectively transfer bubbles to the output decoder. The output decoder may collapse all of the bubbles from certain storage registers so that only the information from the selected storage register reaches the detector. The detectors in turn produce the chip output signal. External control electronics are utilized to control the selective operation of the various devices utilized in the propagation path.
Document ID
20080012217
Acquisition Source
Langley Research Center
Document Type
Other - Patent
Authors
Chen, Thomas T.
Date Acquired
August 24, 2013
Publication Date
June 28, 1977
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-614401
Patent Number: US-PATENT-4,032,905
Funding Number(s)
CONTRACT_GRANT: NAS1-12435
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,032,905
Patent Application
US-PATENT-APPL-SN-614401
No Preview Available