20240014791. AMPLIFIER SYSTEM simplified abstract (Realtek Semiconductor Corp.)
Contents
AMPLIFIER SYSTEM
Organization Name
Inventor(s)
Chen-Fong Liao of Hsinchu (TW)
AMPLIFIER SYSTEM - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240014791 titled 'AMPLIFIER SYSTEM
Simplified Explanation
Abstract
The patent application describes an amplifier system that consists of an output circuit, a processor circuit, a feedback circuit, and a controller circuit. The output circuit generates an output signal and also receives a digital output feedback signal. The processor circuit receives an error audio signal and produces a pulse width modulation control signal for the output circuit. The feedback circuit includes an addition unit that combines the negative value of the digital output feedback signal with the digital input signal to obtain an error audio signal. A variable filter unit in the feedback circuit filters the error audio signal and a compensation unit within the variable filter unit adjusts the gain characteristics of the filter. The controller circuit modifies the parameters of the compensation unit based on a pre-compensation signal to change the gain characteristics of the variable filter unit.
Patent/Innovation Explanation
- The amplifier system includes an output circuit, processor circuit, feedback circuit, and controller circuit.
- The output circuit generates an output signal and receives a digital output feedback signal.
- The processor circuit converts an error audio signal into a pulse width modulation control signal for the output circuit.
- The feedback circuit combines the negative value of the digital output feedback signal with the digital input signal to obtain an error audio signal.
- The feedback circuit also includes a variable filter unit that filters the error audio signal.
- The gain characteristics of the variable filter unit can be adjusted by a compensation unit within it.
- The controller circuit modifies the parameters of the compensation unit based on a pre-compensation signal to change the gain characteristics of the variable filter unit.
Potential Applications
- Audio amplification systems for various devices such as speakers, headphones, and audio receivers.
- Industrial applications where precise control of audio signals is required, such as in audio testing equipment or audio production systems.
Problems Solved
- Provides a method to accurately control and amplify audio signals.
- Reduces distortion and noise in the output signal.
- Allows for flexible adjustment of gain characteristics to suit different audio requirements.
Benefits
- Improved audio quality and fidelity.
- Enhanced control over audio signals.
- Increased versatility in audio amplification systems.
- Potential for better user experience in audio devices.
Original Abstract Submitted
an amplifier system includes an output circuit, a processor circuit, a feedback circuit, and a controller circuit. the output circuit outputs an output signal and returns a digital output feedback signal. the processor circuit receives a filtered error audio signal and outputs a pulse width modulation control signal to the output circuit. an addition unit of the feedback circuit adds the negative value of the digital output feedback signal to the digital input signal to obtain the error audio signal. a variable filter unit of the feedback circuit filters the error audio signal and outputs the filtered error audio signal. a compensation unit of the variable filter unit changes the gain characteristics of the variable filter unit. the controller circuit adjusts one or more parameters of the compensation unit according to a pre-compensation signal so as to change the gain characteristics of the variable filter unit.
