Thomson Consumer Electronics S.a.

Zeith W Hsing

Wolfgang Heidebroek

A television receiver includes a high voltage kinescope driver amplifier having an input for receiving a video signal and a further input for receiving a character input signal from a low voltage character amplifier. When switching from a 'run' mode to a 'stand-by' mode, a control circuit generates a turn-off command signal for disabling the kinescope high voltage supply and concurrently initiating turn-off of the receiver deflection circuit at a controlled rate during a transition interval between the 'run' and 'standby' operating modes. The turn-off command is further applied during the transition interval to an input of the character amplifier so as to over-ride any character signal which may be present to drive the output of the character amplifier to a maximum brightness level which, in turn, over-rides any video signal applied to the high voltage amplifier. Accordingly, the kinescope is driven to a maximum brightness level during the transition interval regardless of the values of either the video signal or the character signal thereby fully discharging the kinescope, avoiding potential spot burn and preventing after-glow.

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Singapore, Singapore

Zeith W Hsing