using two or more bit-mapped memories, the operations of which are switched in time, e.g. ping-pong buffers

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Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) > characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory > Control of the bit-mapped memory > using two or more bit-mapped memories, the operations of which are switched in time, e.g. ping-pong buffers