Method and apparatus for searching for data in multi-bit flash EEPROM memory arrays
December 27, 2014. 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 References 3648255 3729712 Method and apparatus for allocating memory space based upon free space in diverse memory devices Bubble memory disk emulation system Solid state memory for aircraft flight data recorder systems Method for managing virtual memory to separate active and stable memory blocks Intelligent write in an EEPROM with data and erase check Method of preserving data storage in a postal meter Emulation device for converting magnetic disc memory mode signal from computer into semiconductor memory access mode signal for semiconductor memory Solid state electronic emulator of a multiple track motor driven rotating magnetic memory InventorsApplicationNo. 364619 filed on 12/27/1994US Classes:365/185.33, Flash365/218EraseExaminersPrimary: Fears, Terrell W.Attorney, Agent or FirmForeign Patent References
International ClassG11C 013/00AbstractAn arrangement which provides for searching for a data pattern in a flash EEPROM memory array using the internal controllers of the individual chips of the array. By utilizing these controllers to conduct the search, an external database is not required to store all of the logical addresses and their associated physical positions. The addition of more memory to the array need not increase the time required for the search because each addition of a chip to the array to add more memory adds another controller as well as more memory. In fact, the time for conducting the search may be reduced since searches may be conducted in parallel on the individual chips. The direct on-chip search of the array requires a much smaller general data base which is used essentially for control information and frees area on the flash EEPROM memory array board for memory devices.Other References
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