Information processing apparatus having a mask function

Details Information processing apparatus having a mask function Information processing apparatus having a mask function

1987-04-08

1989-09-26

Gruber, Felix D.

Boots, shoes, and leggings

3642525, 3642597, G06F 710, G06F 1300

Patent

active

048705632

ABSTRACT:
An information processing apparatus having a mask operation includes a first circuit generating a first mask control signal indicating a start bit position of a data to be processed and a second circuit generating a second mask control signal indicating an end bit position of that data. The first mask control signal and the second mask control signal are applied to a gate circuit by which a non-mask signal is produced for a bit or bits from the start bit position to the end bit position and a mask signal is produced for the other bit or bits.

REFERENCES:
patent: 3366927 (1968-01-01), Falkoff
patent: 3665175 (1972-05-01), Bouricius et al.
patent: 3786434 (1974-01-01), Frye et al.
patent: 3846759 (1974-11-01), Drake et al.
patent: 3949370 (1976-04-01), Reyling, Jr. et al.
patent: 4713751 (1987-12-01), Dutton et al.

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