GRAPHICAL DATA PROCESSING RESEARCH STUDY AND EXPERIMENTAL INVESTIGATION
Quarterly rept. no. 10, 1 Sep-30 Nov 1962
STANFORD RESEARCH INST MENLO PARK CA
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Major decisions have been made regarding the design of the experimental pattern-recognition machine, MINOS II, to be constructed under the present contract. Much of the total effort has been expended in support of our fundamental premise that the development of inexpensive, adaptive weights will allow their use in quantities sufficient to ensure the practicality of learning machines for real pattern-recognition tasks. Several devices dependent on the electromagnetic or magnetostrictive properties of common magnetic materials or components have been developed and are described. All are compatible with some form of coordinate-address logic for nondestructive read-out and adaptation. Two sonic transmission-line configurations allow the use of time-dependent logic if needed. Several multiaperture ferrite core configurations offer high reliability and speed. An adaptive weight with desirable storage characteristics, was re-examined as a result of a substantial reduction in component cost. This weight uses two tape-wound cores which generate a second harmonic component proportional to the net remanent flux when driven by a high frequency current.