Baseline compensation system
First Claim
1. An analog to digital converter (ADC) system, comprising:
- a first amplifier configured to amplify an analog input signal to produce an analog amplified direct current (DC) signal;
an ADC configured to receive the analog amplified DC signal and convert the analog amplified DC signal into a digital DC signal;
a digital to analog converter (DAC) configured to receive the digital DC signal and convert the digital DC signal into an analog DC signal; and
a second amplifier having a gain greater than a gain of the first amplifier, the second amplifier configured to receive an analog alternating current (AC) signal, the analog AC signal comprising the analog DC signal subtracted from the analog input signal, and amplify the analog AC signal to produce an amplified AC signal;
wherein the ADC is further configured to receive the amplified AC signal and produce a digital AC signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An analog to digital converter (ADC) system that includes a first amplifier configured to amplify an analog input signal to produce an amplified direct current (DC) signal, an ADC configured to receive the amplified DC signal and convert the amplified DC signal into a digital DC signal, a digital to analog converter configured to receive the digital DC signal and convert the digital DC signal into an analog DC signal, and a second amplifier configured to receive an analog alternating current (AC) signal comprising the analog DC signal subtracted from the analog input signal and amplify the analog AC signal to produce an amplified AC signal. The ADC is further configured to receive the amplified AC signal and produce a digital AC signal. The second amplifier has a gain greater than a gain of the first amplifier.
-
Citations
20 Claims
-
1. An analog to digital converter (ADC) system, comprising:
-
a first amplifier configured to amplify an analog input signal to produce an analog amplified direct current (DC) signal; an ADC configured to receive the analog amplified DC signal and convert the analog amplified DC signal into a digital DC signal; a digital to analog converter (DAC) configured to receive the digital DC signal and convert the digital DC signal into an analog DC signal; and a second amplifier having a gain greater than a gain of the first amplifier, the second amplifier configured to receive an analog alternating current (AC) signal, the analog AC signal comprising the analog DC signal subtracted from the analog input signal, and amplify the analog AC signal to produce an amplified AC signal; wherein the ADC is further configured to receive the amplified AC signal and produce a digital AC signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method comprising:
-
amplifying, by a first gain factor, an analog input signal comprising an analog direct current (DC) signal and an analog alternating current (AC) signal to produce an amplified analog DC signal; subtracting the analog DC signal from the analog input signal to produce the analog AC signal; amplifying the analog AC signal by a second gain factor to produce an amplified analog AC signal, the second gain factor greater than first gain factor; and converting, by an analog-to-digital converter (ADC), the amplified analog AC signal to produce a digital AC signal. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A system, comprising:
-
a signal detection device configured to detect an optical input signal and convert the optical input signal into an electrical analog input signal, the analog input signal including an analog direct current (DC) signal and an analog alternating current (AC) signal; and an analog-to-digital converter (ADC) system configured to receive the analog input signal, the ADC system including; a first channel configured to receive the analog input signal and to output an amplified analog DC signal, the amplified analog DC signal comprising the analog DC signal after being amplified by a first gain factor; an ADC configured to receive from the first channel the amplified analog DC signal and convert the amplified analog DC signal into an amplified digital DC signal; and a second channel configured to receive the analog AC signal and output an amplified analog AC signal, the analog AC signal comprising the analog DC signal subtracted from the analog input signal and the analog amplified AC signal comprising the analog AC signal after being amplified by a second gain factor; wherein the ADC is further configured to convert the amplified analog AC signal into a digital AC signal. - View Dependent Claims (17, 18, 19, 20)
-
Specification