TELEVISION SET Russian patent published in 1999 - IPC

FIELD: television sets incorporating provision for two picture processing modes: picture-in-picture processing and video signal nonlinear processing. SUBSTANCE: multiplexer functions to multiplex first video signal with compressed video signal for transmitting it to display unit in order to obtain frames of picture-in-picture type in which first video signal is visualized in the area of main picture of display and compressed second video signal is visualized as inserted image in the area of main picture. Nonlinear processing unit connected between multiplexer output and display unit input amplifies chosen flags of multiplexed video signal visualized by display unit. Circuit arrangement for controlling nonlinear processing unit enables nonlinear processing of visualized pictures only in main picture area and not in inserted image one. EFFECT: provision for picture-in-picture mode with black inserted image varying depending on main picture content. 6 cl, 2 dwg