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Random Access Delay Line Register

IP.com Disclosure Number: IPCOM000098964D
Original Publication Date: 1962-Mar-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Spruth, W: AUTHOR

Abstract

The random access delay line operates to transfer a character from an arbitrary location in a magnetostrictive delay line to an arbitrary location in another similar line.

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Random Access Delay Line Register

The random access delay line operates to transfer a character from an arbitrary location in a magnetostrictive delay line to an arbitrary location in another similar line.

A closed loop magnetostrictive delay line 10 has a character in the form of binary information stored in it by means of input winding 12.. Line 10 is made of magnetic material having little remanence, i.e., small Br/Bs ratio, exhibiting a curve 16 for a plot of a change in dimension D versus polarization P. When the input winding 12 of line 10 is energized to enter a binary 1, a positive field is applied to line 10, causing the material to be positively polarized to a point 18. A binary 0 is entered by the absence of a signal to winding 12, leaving the material at point 20, unpolarized. The character is then recirculated in line 10 until the location to which it is to be transferred becomes accessible. At spaced points along line 10, transducers 22 are provided each commonly connected to sense amplifier 24. In order to read out from a particular transducer 22, a bias electromagnet 26 is provided for each transducer 22. Bias magnet 26 is selectively energized by drive amplifier 28 in conjunction with a control signal from source 30 through an AND.

Upon energization of a selected magnet 26, a positive field is applied to line 10 in the area coupled by associated transducer 22.

The field provided by magnet 26 causes further positive polarization, and hence change...