Browse Prior Art Database

Memory Shielding

IP.com Disclosure Number: IPCOM000097166D
Original Publication Date: 1962-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Foglia, HR: AUTHOR

Abstract

The magnetic core memory arrangement reduces inductive and capacitive coupling between drive lines. It thus provides enhanced signal-to-noise ratios for individual cores.

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Memory Shielding

The magnetic core memory arrangement reduces inductive and capacitive coupling between drive lines. It thus provides enhanced signal-to-noise ratios for individual cores.

A wired core memory is first sprayed with plastic to fill the apertures of the cores. The memory is then immersed in a bath of dry conductive metallic particles such as powdered aluminum or a wet conductor such as liquid graphite. A grounding bus is woven through the bath. Hence, shielding for both capacitive and inductive coupling between drive lines is provided as well as shielding between drive lines and sense lines. Due to the effective closeness of the lines to the shield, the characteristic impedance of the drive lines is also reduced. Cooling of the array is achieved due to the high thermal conductivity of the bath.

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