SIGNAL PROCESSING DEVICE AND OPERATING METHOD THEREOF

Abstract: a signal processing device includes a circuit system, in which the circuit system includes an amplifier, a temperature compensating circuit and a computing circuit. the amplifier is configured to amplify an input signal according to a temperature compensating current, in order to generate an output signal. a direct current offset of the output signal is related to the temperature compensating current. the temperature compensating circuit includes a detecting resistor and a comparator. the detecting resistor is configured to generate a detecting voltage according to the temperature compensating current. the comparator is configured to compare the detecting voltage with a reference voltage to generate a comparison signal. the computing circuit is configured to adjust the temperature compensating current according to the comparison signal so as to make the detecting voltage approximate to the reference voltage.

Inventor(s): Zhen Cheng ZHANG, Chih-Lung CHEN

CPC Classification: G05F1/567 (SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES (regulating the timing or recurrence frequency of pulses in radar or radio navigation systems ; regulation of current or voltage, specially adapted for use in electronic time-pieces ; closed-loop systems for regulating non-electric variables by electric means ; regulating power supply of digital computers ; for obtaining desired operating characteristics of electromagnets with armatures ; regulating electric power distribution networks ; regulating the charging of batteries ; regulation of the output of static converters, e.g. switching regulators ; regulation of the output of electric generators , ; controlling transformers, reactors or choke coils ; regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers ; regulating tuning of resonant circuits ; regulating characteristics of transmission lines ; controlling electric light sources , , , , ; electric control of X-ray apparatus ))

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