Patent ID: 8593920

Claim:
An apparatus for conditioning a signal from an optical pickup unit, the apparatus comprising: a single-ended channel including a first signal processing block, the first signal processing block to (i) calibrate a reference level of a single-ended signal corresponding to a single-ended output of the optical pickup unit, if any, and (ii) adjust the single-ended signal within a desired dynamic range; a dual-ended channel including a second signal processing block, the second signal processing block to (i) calibrate a reference level of a dual-ended signal corresponding to a dual-ended output of the optical pickup unit, if any, and (ii) adjust the dual-ended signal within the desired dynamic range; a multiplexer to selectively couple either the single-ended channel or the dual-ended channel to an output of the multiplexer; and a digital signal processing stage including an analog-to-digital converter coupled to the output of the multiplexer.