Methods and systems for measuring and gathering data relating to publication usage by participants in publication readership studies. Some methods and systems employ portable monitors carried by participants of the studies along with publications fitted with various devices, such as piezoelectric transducers, RFID tags and others devices and circuits.
申请公布号
WO2005092012(A2)
申请公布日期
2005.10.06
申请号
WO2005US09208
申请日期
2005.03.18
申请人
ARBITRON INC.
发明人
JENSEN, JAMES, M.;CRYSTAL, JACK, C.;NEUHAUSER, ALAN, R.;ZHANG, JACK;PUGH, DANIEL, W.;VISNIUS, DOUGLAS, J.;FLANAGAN III, EUGENE, L.