The ATTI Video Redisplay Tool (VRT) is a standard program that interfaces directly with the ATTI Enhanced VXI Programmable Video Generator and Analyzer. In normal operation, the PVGA functions as a highly flexible video frame grabber with operational modes that support a broad range of video formats. The Video Redisplay Tool serves as an extension to the capabilities of the video frame grabber by adding a graphical interface, continuous near real time image reconstruction, image enhancement, and visual redisplay on the host computer’s monitor. By utilizing assets already present on the testing platform, the physical requirement for an external display unit to monitor signals generated by the instrumentation under test is eliminated. The PVGA and VRT combine to form a complete solution set for the generation and acquisition of video signals within the confines of a single VXI instrument.
The ATTI Video Redisplay Tool expands upon the power of the ATTI Programmable Video Generator and Analyzer by providing value-added features previously unavailable in the VXI form factor. The ATTI PVGA is a true VXI instrument integrating multiple function, multiple output video generation, and video-specific digitizer/analyzer capabilities into a complete general purpose test platform for military or commercial applications. The capacity of the PVGA to operate with nonstandard military video variants is unsurpassed, both in the generation and analysis modes of operation. The PVGA acquisition unit is capable of capturing the following video modes:
The software driver for the PVGA provides single-frame capture capability with numerous measurement modes. Once the PVGA has been programmed by the PVGA driver, the Video Redisplay Tool is designed to take direct control of the PVGA and automatically interlace the frame capture sequence with simultaneous data uploads. Upon completion of each data upload, the image is manipulated by the VRT post-processor where it may be enhanced, magnified, or averaged. Finally, the processed image is presented to the operator in a scalable window on the host computer’s monitor.
The benefits of the PVGA-VRT package are several:
The ATTI Video Redisplay Tool was designed to be a unique and effective software enhancement to the PVGA video test instrument. With no additional hardware requirements, the PVGA is transformed into a virtual imaging monitor capable of viewing a wide range of video standards and variants over a wide range of video formats.