Apparatus and method to dynamically adjust the amplitude of a signal comprising information

An article of manufacture comprising a computer useable medium having computer readable program code disposed therein to adjust the amplitude of a signal comprising information read from an information storage medium, the computer readable program code comprising a series of computer readable program steps to effect:

• forming (N) digital signals comprising information read from an information storage medium, wherein each of those (N) digital signals comprises an amplitude;
• determining if a first signal comprises information read from a calibration region of said information storage medium, wherein said first signal comprises one of said (N) digital signals;
• operative if said first signal comprises information read from a calibration region of said information storage medium, providing a first gain level and an acquisition multiplier coefficient;
• calculating a gain adjusted signal comprising the multiplication product of said first signal and said first gain level;
• determining an acquisition gain error;
• calculating a second gain level by multiplying said acquisition multiplier coefficient times said acquisition gain error, and adding that multiplication product to said first gain level.

A computer program product usable with a programmable computer processor having computer readable program code embodied therein to adjust the amplitude of a signal comprising information read from an information storage medium, comprising:

• computer readable program code which causes said programmable computer processor to form (N) digital signals comprising information read from an information storage medium, wherein each of those (N) digital signals comprises an amplitude;
• computer readable program code which causes said programmable computer processor to determine if a first signal comprises information read from a calibration region of said information storage medium, wherein said first signal comprises one of said (N) digital signals;
• computer readable program code which, if said first signal comprises information read from a calibration region of said information storage medium, causes said programmable computer processor to receive a first gain level and an acquisition multiplier coefficient;
• computer readable program code which causes said programmable computer processor to calculate a gain adjusted signal comprising the multiplication product of said first signal and said first gain level;
• computer readable program code which causes said programmable computer processor to calculate an acquisition gain error;
• computer readable program code which causes said programmable computer processor to calculate a second gain level by multiplying said acquisition multiplier coefficient times said acquisition gain error, and adding that multiplication product to said first gain level.