An autozeroing apparatus is disclosed for correcting the offset error in a computerized axial tomography (CAT) scanner data acquisition subsystem (DAS). The DAS includes a floating point amplifier for applying discrete amplification factors, or gain range segments, to an analog input before conversion...http://www.google.fr/patents/US5177697?utm_source=gb-gplus-shareBrevet US5177697 - Autozeroing apparatus and method for a computerized tomography data acquisition system
Autozeroing apparatus and method for a computerized tomography data ...
