| 摘要 |
The circuit controls the contrast, brightness and sharpness of a color television set according to the surrounding brightness, the screen brightness, and the strength of RF signal by employing fuzzy theory. The circuit includes the 1st sensor (10) for sensing the brightness of surroundings, the 2nd sensor (20) for sensing the brightness of screen, the 3rd sensor (30) for sensing the strength of RF signal by voltage-dividing the AGC signal of a tuner, and three A/D converters (40-60) for converting the signals from the sensors (10,20,30) to digital signals. |
