A video compression method and apparatus uses an active decoder. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. A voltage generator receives a supply voltage and outputs a gate-on voltage and a gate-off voltage to first and second output nodes, respectively. The threshold indicates maximum number of indexes stored in each peer. The buyer may place an order for one or more approved products, whereupon the web site receives order parameters, such as the identity of the product and the quantity desired.