VIDEO MEMORY AND METHOD FOR SERIAL DATA OUTPUT

摘要

FIELD: computer engineering. SUBSTANCE: dual-port video memory unit is tuned to high-rate clock signal and has data register outputs serial data in response to serial address. It is synchronized with serial clock pulse. Said device has first input-output line for data transmission. Data are synchronized to even serial address and are output from data register. In addition device has second input- output line for data transmission. Data are synchronized to odd serial address and are output from data register. Device provides independent transmission lines for output of serial data for even and odd addresses. This results in possibility to output serial data for each period of serial clock pulse. This decreases working cycle time of video memory unit and provides possibility of high-rate transmission of data to cathode-ray tube. This results in possibility to decrease delay between corresponding periods of system clock pulse. EFFECT: increased speed.