A broadcast signal is received that includes a data identifier that
identifies data associated with the broadcast signal. The broadcast signal
also includes the data associated with the broadcast signal encoded in the
broadcast signal. The data associated with the broadcast signal includes
an indicator to ignore the data identifier contained in the broadcast
signal. The system decodes the data encoded in the broadcast signal while
ignoring the data identifier contained in the broadcast signal. The
indicator to ignore the data identifier contained in the broadcast signal
may include an associated time period during which the data identifier
should be ignored. The data identifier is broadcast in scan line
twenty-one of a broadcast image. The data associated with the broadcast
signal is encoded in vertical blanking interval lines of a broadcast
image.
