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Calibrating media playback channels for synchronized presentation

  • US 10,614,857 B2
  • Filed: 07/02/2018
  • Issued: 04/07/2020
  • Est. Priority Date: 07/02/2018
  • Status: Active Grant
First Claim
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1. A method comprising:

  • sending, by a media device, calibration content to a first playback device associated with a first playback channel;

    storing, by the media device, a transmission time indicating when the calibration content was sent to the first playback device, the transmission time determined based on a first clock on the media device;

    detecting, by a sensor device, a portion of calibration content presented by the first playback device;

    generating, by the sensor device, calibration data, the calibration data including the portion of the detected calibration content and a detection time indicating when the portion of the calibration content was detected, the detection time determined based on a second clock on the sensor device;

    sending, by the sensor device, the calibration data to the media device; and

    calculating, by the media device, a propagation latency value based on the transmission time, the portion of the detected calibration content, and the detection time indicated in the calibration data.

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