Regulator, Voltage generator, Semiconductor memory device and Voltage generating method
A regulator comprises: an input voltage control unit configured to adjust and output an inputted pumping voltage in response to a control signal changed according to a set target voltage; and a regulation portion configured to output the target voltage by regulating the adjusted pumping voltage. The regulator can reduce the current consumption by adjusting the pumping voltage inputted according to the size of the target voltage.
Abstract This study demonstrates how the rigid body registration parameters for good registration of serially acquired 3-D magnetic resonance images vary systematically when the registration routine is presented with a series of cropped data sets that are systematically positioned throughout the entire volume. The results of the registration of these subcubes are compared with the results of a single registration of the complete volume for two consecutive 3-D scans of the brain of a normal volunteer, with one scan having optimized shim coil currents and the other having all second-order shim coil currents set to zero. The technique is sensitive and able to reveal subvoxel misregistrations.