Patent ID: 7855751

Claim:
A data transmitter that transmits video/audio data through a digital display connecting interface, including: a data processing unit for processing audio data to output transmission audio data; and a data superimposing unit for superimposing the transmission audio data upon video data to output video/audio data, said data processing unit including, a frequency dividing means for frequency dividing an audio clock as a reference clock for the audio data using a predetermined frequency division parameter N, to generate a transmission audio clock having a period that is N times longer than the audio clock; and a count means for counting the period of the transmission audio clock generated by the frequency dividing means with utilizing a pixel clock as a reference clock for the video data to output the count value CTS, and generating the transmission audio data by adding additional information including the frequency division parameter N and the count value CTS to the audio data, and said transmission audio clock being a clock having a frequency of 300 Hz or higher.