On-screen display character color correction circuit

摘要

The present invention relates to a color correction circuit for an on-screen display character. Conventionally, an on-screen character is displayed in a predetermined color irrespective of the state of the screen. In general, white characters are often displayed. . Accordingly, the present invention detects a weak electrical indicator (AGC) level of a tuner which is high in level and cuts off a signal in a reproduction mode or a line mode, detects a luminance level of a video signal higher than a predetermined level, compares the integrated value with a reference value , Control is performed when the screen is at a certain level or higher according to the comparison, and the R, G, or B signal is muted by oh ringing with the weak field detection output that is cut off in the playback / line mode, To change the color of the character.