Patent ID: 11907287
Assignee: THE NIELSEN COMPANY (US), LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus to perform source classification, the apparatus comprising:
at least one memory;
instructions; and
processor circuitry to execute the instructions to:
extract values of audio encoding parameters from high definition multimedia interface (HDMI) metadata obtained from a monitored HDMI port of a media device, the HDMI metadata corresponding to media being output from the monitored HDMI port;
map the extracted values of the audio encoding parameters to a first unique encoding class (UEC) in a set of defined UECs, different ones of the set of defined UECs corresponding to different combinations of possible values of the audio encoding parameters capable of being included in the HDMI metadata; and
identify a media source corresponding to the media that is output from the monitored HDMI port based on one or more possible media sources mapped to the first UEC.