The present technology relates to a reproduction device, a reproduction method, and a program, which are able to control the processing of H. The method comprises the steps of: measuring error signals in a plurality of error signal control loops of the reader, comprising a focus error signal control loop; calculating power dissipation in each error signal control loop for determining the amount of radial to vertical crosstalk in the focus error signal control loop. X-ray radiation from the region is detected, the x-ray radiation representing an attenuation of the imaging x-ray beam caused by the portion of the region. Pressure gradient is calculated from velocity information automatically, more likely providing consistent measurements. Thus, the stored character bit maps are used repeatedly to generate a plurality of variable data bit maps.