Patent 7428718 was granted and assigned to Xilinx on September, 2008 by the United States Patent and Trademark Office.
A method of placing a circuit design for a target device can include identifying a critical region having at least one input block and at least one output block and determining a line starting at the input block and extending to the output block. Blocks of the critical region can be assigned to sites located on, or proximate to, the line according to connectivity.