摘要:
In one embodiment, a mask pattern verification apparatus is disclosed. The mask pattern verification apparatus can include a library registration portion registered a clean circuit pattern, a memory portion saved a design circuit pattern, a verification circuit pattern, a verification mask pattern, and a verification wafer pattern, a mask verification portion performing mask verification to the verification mask pattern, a lithography verification portion performing lithography verification to the verification wafer pattern, and a CPU including a library registration circuit registering the clean circuit pattern to the library registration portion, a pattern matching circuit verifying the clean circuit pattern being set or not in the design circuit pattern, a verification pattern extraction circuit extracting the verification circuit pattern from the design circuit pattern, an OPC circuit performing OPC to the verification circuit pattern, a mask verification circuit controlling the mask verification portion, and a lithography verification circuit controlling the lithography verification portion.
摘要:
In one embodiment, a mask pattern verification apparatus is disclosed. The mask pattern verification apparatus can include a library registration portion registered a clean circuit pattern, a memory portion saved a design circuit pattern, a verification circuit pattern, a verification mask pattern, and a verification wafer pattern, a mask verification portion performing mask verification to the verification mask pattern, a lithography verification portion performing lithography verification to the verification wafer pattern, and a CPU including a library registration circuit registering the clean circuit pattern to the library registration portion, a pattern matching circuit verifying the clean circuit pattern being set or not in the design circuit pattern, a verification pattern extraction circuit extracting the verification circuit pattern from the design circuit pattern, an OPC circuit performing OPC to the verification circuit pattern, a mask verification circuit controlling the mask verification portion, and a lithography verification circuit controlling the lithography verification portion.
摘要:
Embodiments of the present invention help to suppress adverse effects on the host computer operation caused by saving a segment table. According to one embodiment, a hard disk drive (HDD) creates a segment table to associate addresses of user data in a flash memory with LBAs in a magnetic disk. The HDD updates the segment table in a DRAM and saves it to the flash memory at a specific timing. The HDD creates a journal indicating an update of the segment table and saves it to the flash memory. The segment table and the journal in the flash memory enable the latest segment table to be restored. If the HDD receives a predetermined command from a host computer, it saves the segment table in the DRAM into the flash memory.