Patent ID: 7600240

Claim:
A data processing apparatus, comprising: a presentation device for presenting video based on video data when a video presentation timing signal is provided from a providing device for providing a video presentation timing signal indicating presentation timing for video at a predetermined cycle time after a presentation time when video based on video data is to be presented; a calculation device for calculating a presentation delay time from the presentation time when video based on the video data is to be presented to a time when the presentation device presents the video; and a sounding device for outputting audio based on audio data when the calculated presentation delay time passes from a sounding time when the audio based on the audio data is to be outputted, wherein the calculation device calculates the presentation delay time by subtracting a providing time when the video presentation timing signal is provided before the presentation time from the presentation time when the video based on the video data is to be presented, dividing a result of the subtraction by the cycle time of the video presentation timing signal, and subtracting a remainder obtained as a result of the division from the cycle time of the video presentation timing signal.