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:
Nov. 05, 2002
Filed:
Jul. 28, 1999
Shuichi Kikuchi, Iwate, JP;
Tokyo Electron Device Limited, Yokohama, JP;
Abstract
In order to access a memory cell array ( ), an address translation table which stores a correspondence between logical and physical addresses, and an empty block table which specifies locations of empty blocks, are stored in an arbitrary block of the memory cell array ( ) itself. In the case of reading data from the memory cell array ( ), a physical address to read data is attained with reference to the address translation table stored in the memory cell array ( ). Meanwhile, in the case of writing data, an empty block is detected from the empty block table stored in the memory cell array ( ), and data is written in the empty block. Moreover, the address translation table and the empty block table which have been updated are written in another empty block.