A speed cooking oven with sloped oven floor and reversing gas flow is disclosed comprising a cooking cavity, a controller, thermal heating source, blower assembly, air directing means, and a sloped oven floor that directs air flow from the oven side walls to oven center thereby producing a highly turbulent reversed air flow. Many commercially available video encoders support constant bit-rate encoding but not constant quality encoding. Past web or other type data access patterns can be mined to predict future browsing sites or desired access locations. The row and column electrodes may be coupled to touch sensor circuitry that uses the row and column electrodes to detect touch events. The computing device solves a system equation for color pixel data for each pixel of the sampled image data using the sampled image data and the calculated gradients. A method of determining the contact write current includes generating PES’s in response to the head reading servo sectors on the disk, calculating PES variances wherein each PES variance is a statistical measure of a different group of the PES’s, calculating a change in the PES variances, and selecting the contact write current in response to the change in the PES variances.