Abstract: A picture-in-picture type television receiver in which a sub-picture is displayed inset into a main picture. In the television receiver of this invention the viewer, by operating a single control switch, can cause the receiver to display as the sub-picture either a moving picture or a still picture taken from either the main picture or the sub-picture at a selected point in time, at the viewer's option. When the still picture is taken from the main picture, a new still picture is displayed each time the control switch is operated, whereas when the still picture is taken from the sub-picture, the display of the still picture and the display of a real moving picture are alternately carried out each time the control switch is operated.

Abstract: In a television receiver with a digital processing system for processing display parameters, a CRT discharge detector produces a signal in response to discharge of the cathode ray tube of the television receiver, and a control-reset circuit employs a signal for generating one or more reset pulses for holding the registers of the signal processing circuits in their reset state for the duration of the cathode ray tube discharge. Following termination of the discharge, the reset signal is removed which allows the signal processing circuits to resume their normal function with unaltered data.