| 摘要 |
PURPOSE:To make it possible to know the display contents of the entire screen within half the time of the transmission of all data by transmitting only data at addresses of vertical fixed intervals, and then data at remaining addresses. CONSTITUTION:At a transmission side, addresses outputting from read address counter 2 are converted into even-numbered addresses and odd-numbered addresses so as to assign addresses in transmission-side memory 4, and consequently data at vertical odd-numbered addresses are output to data output line 6 before data at even-numbered addresses are sent to data output line 6. The data outputting in this way having passed through narrow-band transmission line 7 are displayed being written in reception-side memory 12 in the order of the odd-numbered addresses and even-numbered addresses of the output of reception-side address counter 9. Therefore, it is possible to know from the reception side the display contents of the entire screen within half the time of the transmission of all data. |
