Abstract: Apparatus for the parallel processing of ultrasonic information to derive simultaneously multiple vectors of ultrasonic information per ultrasonic transmission. In a preferred embodiment, the apparatus includes for each transducer element in a transducer array an analog to digital converter and a delay processing subsystem associated with each analog to digital converter. Each delay processing subsystem includes means for applying a main delay time period to each received digitized signal and a first and a second incremental time delay means for delaying by some additional incremental time period the digitized main delay signal.

Abstract: A thermally developed photographic copier is provided having two controls, one for adjusting the contrast, or blackness, of an image, and another for adjusting background contrast. A microprocessor samples and processes the settings of these controls to produce a video pedestal determined bythe background contrast control, and a gain control signal adjusted for effects of the background contrast setting to keep amplified video singals within the dynamic range necessary for the image contrast setting. Video signals used to expose light-sensitive paper or film are amplified in accordance with the gain control signal and combined with the video pedestal for desired background contrast.