DATA TRANSMISSION CIRCUIT

摘要

A video data and a pixel clock, which are inputted from an audio/video signal processing unit, are analyzed, and a determination made as to whether or not the signal is a regular signal, whereupon, if the signal is irregular, an irregular signal output state may be prevented by generating and outputting a TMDS based on a dummy video data and a dummy pixel clock that are generated internally, and the video output may be accelerated in order to avoid an occurrence of a device authorization.