A projection zoom lens has three negative, positive, and position group configuration in order from a magnification side. The compounds described herein are potent thrombolytics and useful for the inhibition of platelet aggregation in the treatment of thromboembolic disorders. A controller provides a first macroblock to the first module and provides a second macroblock to the first module, without waiting for the first module to complete processing of the first macroblock, when information is available to the first module to process the second macroblock.