AUDIO/VIDEO SYNCHRONIZATION USING A DEVICE WITH CAMERA AND MICROPHONE

摘要

Methods, systems, and apparatuses are described for performing a calibration process for synchronizing audio signals with video signals. The calibration process may be performed between one or more devices of an entertainment system and a handheld device. Device(s) (e.g., a television and speaker(s)) of the entertainment system are configured to playback video signal(s) and audio signal(s), respectively. The handheld device is configured to determine an amount of synchronization error between the audio signal and the video signal, determine a synchronization correction value based on the determined amount, and provide the synchronization correction value to device(s) of the entertainment system. The device(s) may use the synchronization correction value to correct the delay between the video signal and the audio signal such that the video signal and the audio signal are synchronized.

主权项

1. A method in a handheld device, comprising:
performing one or more iterations of a calibration process to obtain a synchronization correction value for synchronizing an audio signal and a video signal, wherein each of the one or more iterations comprises:
determining a first time at which a test frame included in video content representative of the video signal is detected,determining a second time at which a test tone included in audio content representative of the audio signal is detected, anddetermining the synchronization correction value based on at least the first time and the second time; and providing the synchronization correction value to another device.