Semi-blanking processing apparatus by detecting luminance of television

摘要

In this case, on the way of watching TV through TV, as the direct light on the video screen reaches the reflected light, the visual barrier occurs, considering that the TV program is not easy to watch.The screen area on the left, right and upper sides of the television can detect the surrounding luminance, and the screen area for detecting excessive light amount is provided, and the detection device for the television luminance that can perform anti blue screen processing is provided.According to this, the video signal of the TV broadcast of the signal is increased by the video amplification unit (12), the video signal processing is carried out by the video signal processing module (14), and the video output (16) is increased, which appears on the TV of the video broadcast;For a screen area that detects an excessive luminance level, a data memory (8) controlling function program data recording for screen processing andThe counter attack control unit (10) is used for the screen area of the over detection level,The synchronization signal (18) of the video signal is separated,Extract the vertical motor signal, and extract the vertical motor extractor extractor of the synchronous counterattack control unit (10) in the small crystal screen fieldThe horizontal synchronous signal is extracted from the above separated synchronous signal, and the rolling extractor for anti Blues processing is extractedGenerated from the extracted horizontal synchronous signal, and under the control of the control unit (10), the counter attack signal generating unit (24) of the small screen spirit region is operated,A luminance extractor for extracting luminance signals from the video signals of the video amplification unit (2)The extracted luminance multi signal level is a feature of the luminance level comparison section (28) compared with the set value.