PROJECTION TELEVISION RECEIVER

摘要

PURPOSE:To improve the brightness while to reduce the size and to facilitate regulation by driving such sets of control electrode group as corresponding with the number of linear cathode for radiating plural number of electron beams in single cathode ray tube through an image signal corresponding with each deflecting position. CONSTITUTION:Signals are taken in sequentially through latch pulses (a1)-(an) for every color with such timing as the effective interval of intermediate screen display in single horizontal interval (1H) of image signal is divided by the num ber of picture elements (n) in horizontal direction then only such signals as latched by single time during single horizontal interval are collected and fed through the latch pulse (b) to the switching circuits 27-1-27-n, 29-1-29-n. The switching pulse (c) will divide 1H display interval into three to match with the horizontal deflection thus to select RGB signals. The switching pulse (d) will switch between signals delayed/not-delayed by 1/2V to halve the display interval in vertical direction to select different one between the control electrodes 57-1-57-n and 58-1-58-n.