Signal processing system capable of changing signal levels
AssigneeRealtek Semiconductor Corp.
InventorsWen-Chi Wang, Bing-I Chang
Life of this patent
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Abstract
A signal processing system for changing a level of an input signal to generate an output signal is disclosed. The signal processing system includes a shifter, a sigma-delta modulator, and a level adjuster. The shifter is utilized for receiving the input signal and for bit-shifting the input signal according to a first predetermined gain to generate a first adjustment signal. The sigma-delta modulator is utilized for generating the output signal according a second adjustment signal and the first adjustment. The level adjuster is utilized for adjusting a level of the output signal according to a second predetermined gain to generate the second adjustment signal.
Claims15
A signal processing system for changing a level of an input signal to generate an output signal, the signal processing system comprising:
- a shifter for receiving the input signal and for bit-shifting the input signal according to a first predetermined gain to generate a first adjustment signal;
- a sigma-delta modulator, for generating the output signal according a second adjustment signal and the first adjustment signal;
- and
- a level adjuster, for adjusting a level of the output signal according to a second predetermined gain to generate the second adjustment signal.
A signal processing method for changing a level of an input signal to generate an output signal, the signal processing method comprising:
- bit-shifting the input signal according to a first predetermined gain to generate a first adjustment signal;
- generating the output signal according to a second adjustment signal and the first adjustment signal;
- and
- adjusting a level of the output signal according to a second predetermined gain to generate the second adjustment signal.
Dependencies are inferred from the claim text.