METHODS AND SYSTEMS FOR CLOCK CORRECTION AND/OR SYNCHRONIZATION FOR AUDIO MEDIA MEASUREMENT SYSTEMS
摘要
Systems and methods are disclosed for synchronizing devices that produce identifiable characteristics from audio media. A device receives audio and produces initial time data. Subsequent time data is received at a coupling interface from a portable device that has access to accurate time sources. The subsequent time data is processed to determine if it is more accurate than the initial time data. If so, the clock of the device is updated to reflect the second time data. The device then processes the audio media to generate at least one identifiable characteristic relating to the audio, which may include ancillary codes and/or audio signatures. The identifiable characteristics are then transmitted together with the subsequent time data for detection.
申请公布号
CA2875352(A1)
申请公布日期
2014.05.01
申请号
CA20132875352
申请日期
2013.07.02
申请人
THE NIELSON COMPANY (US), LLC
发明人
STAVROPOULOS, JOHN;JAIN, ANAND;LYNCH, WENDELL;KUZNETSOV, VLADIMIR;CRYSTAL, JACK;GISH, DAVID;NEUHAUSER, ALAN