Active system and method for detecting harmonics of RF...
Active system and method for remotely identifying RF broadcast s
Addressable PCM music broadcast receiver
Advertisement reconciliation system
Apparatus and method for automatically monitoring broadcast band
Audience detection
Audience measurement during a mute mode
Audience rating system for digital television and radio
Audio frequency based market survey method
Automated receiver monitoring method and apparatus
Automatic polling and display interactive entertainment system
Automatic system and method for monitoring and storing radio use