A vertical sharpness adjustment device with which a viewer of a TV
receiver can choose a degree of vertical sharpness adjustment to enhance
a contour of a picture in vertical direction is offered. The vertical
sharpness adjustment device includes a terminal to which a vertical
sharpness control signal given by the viewer is applied, a control
circuit to which the vertical sharpness control signal from the terminal
is applied and a vertical sharpness adjustment circuit which adjusts the
degree of the vertical sharpness of a video signal according to the
vertical sharpness control signal from the control circuit.