for mixing or overlaying two or more graphic patterns

Full Title

Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators > characterised by the display of individual graphic patterns using a bit-mapped memory > Details of the operation on graphic patterns > for mixing or overlaying two or more graphic patterns

Classification Context

Section:

PHYSICS

Class:

EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS

Subclass:

ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION