Abstract: An optical proximity correction (OPC) device and method is provided. The OPC device includes an analysis unit, a reverse pattern addition unit, a first OPC unit, a second OPC unit and an output unit. The analysis unit is configured to analyze a defect pattern from a photomask layout. The reverse pattern addition unit is configured to provide a reverse pattern within the defect pattern. The first OPC unit is configured to perform a first OPC procedure on whole of the photomask layout. The second OPC unit is configured to perform a second OPC procedure on the defect pattern of the photomask layout to enhance an exposure tolerance window. The output unit is configured to output the photomask layout which is corrected.

Abstract: An automatic pet food dispenser at preset times and for a definite quantity includes a dispenser body, a food storing tank, a funnel-shaped receiver, a transporting mechanism. The transporting mechanism consists of a food pipe and a screw conveyer deposited in the food pipe and rotated by a motor for transporting pet food by the screw conveyer to let the food fall down from the storing tank, through the funnel-shaped receiver, and a timer for presetting times of start and stop and thus the period of operating time of the motor. The dispenser body has a food exit formed in a bottom wall and connected to the lower end of the food pipe, and a food trough movably provided in the bottom portion of the dispenser body to pulled out thereof to receive pet food falling down from the food exit.