To attain improvement in sound quality by enhancing audio clock variation property in HDMI transmission.
A transmission device includes an identification information processing unit, a parameter value selection unit, a frequency divider, and a counter. The identification information processing unit receives identification information identifying the reception device from a reception device, and generates decoded identification information indicating the decoded value of the received identification information. The parameter value selection unit selects a first parameter value when the decoded identification information includes information representing a television, selects a second parameter value that is less than the first parameter value when the decoded identification information includes information representing an audio device, and generates a selected parameter value. The frequency divider frequency divides the audio clock using the selected parameter value, and generates a frequency division signal. The counter counts one period of the frequency division signal using the pixel clock and generates the cycle time stamp. The transmission device then sends the selected parameter value and cycle time stamp to the reception device.
KATO NOBUETSU
KANAZAWA SADAYOSHI
| JP2007194845A | 2007-08-02 |
| WO2007099719A1 | 2007-09-07 | |||
| WO2007099719A1 | 2007-09-07 |
Mitsuo Tanaka
Mitsuo Wada