Method and apparatus for stabilizing a video state of a video di

Details Method and apparatus for stabilizing a video state of a video di Method and apparatus for stabilizing a video state of a video di

1994-12-07

1996-09-10

Metjahic, Safet

Television

Basic receiver with additional function

For display of additional information

348380, 348687, 348678, H04N 545, H04N 559

Patent

active

055550266

ABSTRACT:
A video state stabilization apparatus for use in a video display unit for displaying a sub-picture within a main picture. The video state stabilization apparatus receives a main picture ABL control signal, and has a sub-picture beam current detector for generating a sub-picture ABL control signal by receiving a sub-video signal, and using an integrator and a differential amplifier, a switching portion for outputting the sub-picture ABL control signal and the main picture ABL control signal in response to a respective interval of the sub-picture and the main picture, and an adjuster for separately adjusting a brightness of a video signal of the main picture and of the subpicture, so as to make a PIP image with respect to the main picture and the sub-picture according to the ABL control signals output from the switching portions.

REFERENCES:
patent: 3558817 (1971-01-01), Van den Avoort
patent: 5204748 (1993-04-01), Lagoni
patent: 5229855 (1993-07-01), Siann

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