| 摘要 |
An OSD contracting and location shifting apparatus for a video signal processor includes clock generating means for generating first-third clocks, control means for generating a level control signal and a OSD control signal, a level register for variably outputting a predetermined reference value, a comparator for comparing a luminance signal with the reference value output from the level register, a memory for storing a luminance signal of a brighter portion for one frame, a filter for smoothing the luminance signal, and a latch for latching the smoothed signal for one frame, thereby preventing caption and OSD from being overlapped. |
