Abstract: The present invention allows a single display controller design to be used in multiple markets by providing an additional stand-alone circuit which converts conventional analog CRT display signals to digital flat panel display or other digital display signals. A single VGA CRT controller may be implemented in both desktop and portable (e.g., laptop) markets thereby reducing the cost of the display controller through the economies of scale. For a laptop or other digital display markets, the apparatus of the present invention may be applied to a conventional analog CRT controller to convert analog CRT signals to digital laptop signals to generate a display on a flat panel display or other digital device. In addition, the apparatus of the present invention may be incorporated into a stand-alone flat panel display intended for use as a replacement for conventional CRT monitors. The apparatus of the present invention accepts a conventional analog CRT input and outputs digital flat panel display signals.

Abstract: A display controller in a computer system controls the output of graphics display data in a computer system having a fixed resolution flat panel display. Fixed panel displays may have problems displaying non-native resolutions particularly at lower resolutions. The controller of the present invention uses a Discrete Time Oscillator (DTO) based clock divider and DCT based polyphase interpolation to upscale graphics display data from a first resolution to the panel resolution. DTO clock divider circuit synchronizes scan clocks between the input resolution and the desired output resolution. Within graphics display area, MVA.TM. display at greater color depth and resolution may be accommodated by additional DTO divider and interpolation steps.

Abstract: The invention comprises an improved seaplane having a retractable step. The term retractable step, however, is a misnomer. The step portion of the seaplane float includes a panel which may be extended once the plane is airborne to reduce aerodynamic drag created by such hydrodynamic steps. The panel may be hinged at a rear portion of the aircraft and extended and retracted using a hydraulic strut or the like. Side panels may also be provided which would hinge via a piano type hinge or the like to the sides of the extendable panel. The side panels may be provided with an end pin or pins which would travel in a track within the step cavity such that the side panels would be pushed into position as the step cover panel is extended. The apparatus of the present invention may be employed in both conventional and tunnel type hulls.