Patent ID: 8351516

Claim:
A data transmitter that is used in a digital signal transmission system using a digital display connecting interface, including: a data incorporating unit configured to incorporate digital audio data from a video/audio signal source; an audio data processing unit configured to process digital audio data that the data incorporating unit incorporates, to generate transmission audio data; a video/audio superimposing unit configured to superimpose the transmission audio data during a video blanking interval of video data; and a data transmitting unit configured to transmit video data by superimposing the transmission audio data, video blank sync signal and a pixel clock for video data to a data receiver, the transmission audio data including, a parameter N used when frequency dividing a pixel clock for the video data and generating an audio clock used to reproduce digital audio data in the data receiver, and a parameter CTS (both N and CTS are positive integers) used when multiplying a pixel clock for the video data and generating an audio clock, the parameter N being a predetermined value determined based on the combination of the pixel clock and the audio clock, the parameter CTS satisfying the relationship of CTS=pixel clock XN/audio clock, and also satisfying the relationship of 300 (Hz)≦audio clock (Hz)/N≦3000 (Hz).