.~ Monitoring of synchronization or blanking pulse (e.g., horizontal or vertical pulse signal)
DEFINITION
Classification: 348/4
Monitoring of synchronization or blanking pulse (e.g., horizontal or vertical pulse signal):
(under subclass 1) Subject matter including means for indicating which program is being viewed based upon timing information peculiar to a particular video signal source.
(1) Note. Different television stations have different relative phases for synchronizing pulses which enables remote detection of electromagnetic radiation from the receiver indicative of the station being received.
