Semiconductor memory card, semiconductor memory control apparatus, and semiconductor memory control method
Patent 7654466 Issued on February 2, 2010. Estimated Expiration Date: 
September 13, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 13, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and system for performing clean-up of a solid state disk during host command execution Memory card, method for allotting logical address, and method for writing data Patent #: 6725322 Inventors
AssigneeApplicationNo. 10553725 filed on 09/13/2004US Classes:235/492ConductiveExaminersPrimary: Hess, Daniel AAttorney, Agent or FirmForeign Patent References
International ClassG06F 12/00AbstractA host information memory is provided in a semiconductor memory card and a data write start address and a data size supplied by an access unit are stored. A free physical area generation section determines whether or not to perform erasing of an invalid block of a nonvolatile memory when writing of data based on the data write start address and data size, and determines the number of blocks to be erased. When erasing, writing of data and erasing of invalid blocks are simultaneously performed with respect to different memory chips. Erase process of data, herewith, can be optimized and high speed access from the access unit to a semiconductor memory card can be realized.Other References
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