Patent ID: 6856481

Claim:
An apparatus for providing a read signal for an information processing device; the apparatus receiving an input signal containing said information; the apparatus presenting said read signal at an output locus for access by said information processing device; the apparatus comprising: (a) a read signal control unit; said read signal control unit having a read signal control base terminal, a read signal control output terminal and a read signal control supply terminal; said read signal control unit receiving said input signal at said read signal control base terminal and presenting said read signal representing said information at said read signal control output terminal; (b) a first bias unit switchingly coupled with said read signal output terminal via a first switch unit; and (c) a second bias unit; said second bias unit being switchingly coupled with said read signal output terminal via a second switch unit; said first switch unit and said second switch unit cooperating to electrically couple said first bias unit with said read signal output terminal and to electrically isolate said second bias unit from said read signal output terminal when the apparatus is in a first operational mode; said first switch unit and said second switch unit cooperating to electrically couple said second bias unit with said read signal output terminal and to electrically isolate said first bias unit from said read signal output terminal when the apparatus is in a second operational mode.