Display device including a correction circuit for correcting pictures to be displayed, and correction circuit for use in a display device.

摘要

Display device comprising a display tube with a display screen and a video signal processing circuit. The video signal processing circuit has a memory which is controlled by two clock signals, a write clock and a read clock. The display device further comprises a clock oscillator and a correction circuit for correcting the video signal to be displayed for geometry errors, east-west distortion and the like. The correction circuit comprises a converter circuit and a multiplex circuit for converting the clock signal generated by the clock oscillator into a second clock signal having a variable frequency. This provides the possibility of correcting the picture to be displayed for any possible error, while only one clock oscillator is present. <IMAGE>