Pulsed leakage tagging signal

An arrangement for the insertion of a tagging signal into a television signal, the television signal comprising control information and program information, the television signal being transmitted by a communication system, the arrangement comprising:

• a) an input connected to a source of television signals comprising control information and program information, the control information including a vertical interval;
• b) a tagging signal generator operable to generate a tagging signal that is detectable by corresponding leakage detecting equipment;
• and
• c) a signal inserter, coupled to the input and the tagging signal generator, operable to insert the tagging signal into the television signal;
• d) a switch operably coupled to the signal inserter to cause the signal inserter to insert the tagging signal only during the portion of the television signal in which the vertical interval is present.

An arrangement for the insertion of a tagging signal into a television signal, the television signal comprising control information and program information, the control information including a vertical interval, the television signal being transmitted by a communication system, the arrangement comprising:

• a) an input connected to a source of television signals comprising control information and program information;
• b) a tag insertion operable to
• generate a tagging signal, said signal being detectable by corresponding leakage detecting equipment;
• identify a portion of a television signal in which the vertical interval is present;
• and
• insert the tagging signal into the television signal only during the portion of the television signal in which the vertical interval is present.

A method transmitting a tagging signal in a communication system, the communication system transmitting television signals in one or more CATV channels, each channel associated with a carrier frequency, an active sideband, and a vestigial sideband, the method comprising:

• a) generating a tagging signal, said signal being detectable by corresponding leakage detecting equipment;
• b) modulating a carrier signal with the tagging signal, said carrier signal having a frequency within a vestigial sideband associated with a CATV channel;
• and
• c) combining the modulated carrier signal with a television signal transmitted in the communication system only during a portion of the television signal in which a vertical interval is present.

An arrangement for the insertion of a tagging signal into a television signal, the television signal comprising control information and program information, the television signal being transmitted by a communication system, the arrangement comprising:

• a) an input connected to a source of television signals comprising control information and program information;
• b) a tag insertion circuit including an oscillator, the tag insertion circuit operable to
• generate a tagging signal using the oscillator, said signal being detectable by corresponding leakage detecting equipment;
• identify a portion of a television signal in which control information is present;
• and
• insert the tagging signal into the television signal only during the portion of the television signal in which control information is present.