Abstract: There is disclosed a process and apparatus for scanning imaged storage photo-stimuable phosphor plates including automatic gain capabilities once scanning of the thus imaged plate is initiated permitting preliminary reading of a portion of the storage foil or photo-stimuable phosphor imaging plate to determine pixel values for evaluation within a predetermined range, and adjusting the gain if such pixel value is outside the predetermined range by modifying the high voltage supply setting and thence to complete generation of a computer stored image having maximum depth of field.

Abstract: There is disclosed a process and apparatus for scanning imaged storage photo-stimuable phosphor plates including automatic gain capabilities once scanning of the thus imaged plate is initiated permitting preliminary reading of a portion of the storage foil or photo-stimuable phosphor imaging plate to determine pixel values for evaluation within a predetermined range, and adjusting the gain if such pixel value is outside the predetermined range by modifying the high voltage supply setting and thence to complete generation of a computer stored image having maximum depth of field.

Abstract: A computer system that has a main memory and a writeback cache memory also has an I/O device capable of data streaming. A memory controller responds to signals that the I/O device will perform a burst transfer of data to the main memory and blocks potential writebacks from the cache memory to the I/O device. Potential writing over of the data from the I/O device by a flushed cache line written back to the main memory is thereby prevented. The system performance is increased since the data from the I/O device can be written to the main memory without waiting for a snoop cycle and a writeback to be performed.