Patent ID: 7983638
Filing Date: 2011-07-19
Classification: H03J,H04N

Abstract:
1. A method of tuning a signal channel comprising: (a) selecting a signal channel to be tuned; (b) tuning the selected signal channel by applying a filter control signal to an electronically tunable input filter of a signal tuner, the filter control signal causing a passband frequency bandwidth of the electronically tunable input filter to encompass an expected frequency of the signal channel to be tuned; (c) monitoring a performance measurement of the tuned signal channel; (d) generating a first control signal based on monitored performance measurement; (e) retuning the selected signal channel by applying the first control signal to the electronically tunable input filter, the first control signal adjusting the passband frequency bandwidth of the electronically tunable input filter, (f) repeating steps (c), (d) and (e) until the adjusted passband frequency bandwidth of the electronically tunable input filter encompasses the frequency of the selected signal channel as received at an approximate center frequency of the adjusted passband frequency bandwidth.