The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2002
Filed:
Apr. 20, 1999
Jay Wang, Morris Plains, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method and system for storing data in data blocks of predetermined size in an electronic memory (e.g. FLASH memory), particularly data such as updatable record of database transactions. The FLASH operates logically as two stacks where data is pushed into either end of the memory in alternating cycles. Between each push or write cycle, a garbage collection cycle is performed whereby only the most recent transaction performed on any particular record is preserved at one end of the stack, while the rest of the stack is made available for new data. When database being monitored is written to permanent memory, the entire FLASH is again made available for new data. If the database is periodically backed up to permanent memory, it can be restored to RAM by reducing the copy from the permanent memory and modifying it according to the record of database transactions in the electronic memory.