Patent ID: 8594168
Filing Date: 2013-11-26
Classification: H04B

Abstract:
1. A method, performed by a data rate selection module, of reducing noise in a multimedia system, where the data rate selection module is coupled to a resampling module configured to resample an intermediate frequency (IF) signal demodulated from a radio frequency (RF) signal at a selected channel indicated by a channel selection signal which indicates a selected channel, where a digital IF signal is output from an analog-to-digital (A/D) converter at an initial sampling rate and with the data rate selection module coupled to a digital signal processor (DSP) where the DSP is designed to operate at maximum efficiency at a first data rate, the method comprising: receiving data rate adjustment information based on the channel selection signal, where the data rate adjustment signal indicates a second data rate, where the second data rate is different from the first data rate only if operation of the DSP at the first data rate causes high noise in the multimedia system when tuned to the selected channel and if operation of the DSP at the second data rate reduces noise in the multimedia system when tuned to the selected channel; adjusting the initial sampling rate to the second data rate; and controlling the DSP to operate at the second data rate.