Apparatuses and methods for scanning channels in a television signal
receiver. The apparatuses generally include a first acquisition circuit,
a second acquisition circuit, and a controller. The first acquisition
circuit is generally configured to determine, during a first time period,
whether a selected radio frequency channel has a first format and to
produce a first acquisition indicator in response thereto. The second
acquisition circuit is generally configured to determine, during a second
time period overlapping the first time period, whether the selected radio
frequency channel has a second format and to produce a second acquisition
indicator in response thereto. The controller is generally configured to
scan a plurality of radio frequency channels by operating the first
acquisition circuit and the second acquisition circuit for each one of
the plurality of radio frequency channels. Embodiments advantageously
provides for faster scanning and acquisition of television signals in a
mixed-format (e.g., analog and digital) television distribution
environment.