Many companies have claimed to have created a Digital Disk Recorder, or DDR, yet the term remains largely undefined. Drastic Technologies^® has been working with and creating nonlinear VTR and animation solutions for over ten years. Drastic's background in single frame animation, broadcast VTR control, MIDI systems and automation, audio post editing and traditional video editing systems have culminated in the design and implementation of the Titan Series DDRs. The following description serves as a guide to Drastic's interpretation of what constitutes a DDR. This synopsis is based on Drastic's experience in the markets it has been serving.

There has been a lot of confusion in marketing literature concerning video compression. Most of the confusion stems from a misunderstanding of the math and the terms involved in compression calculations. What follows is a reasonably accurate method for correlating various ways of describing video compression. NOTE: This method may not allow accurate comparison with some manufacturer's hardware specifications, as their calculations have been found to be inaccurate by up to twenty five percent.