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:
Oct. 22, 2002
Filed:
Jul. 18, 2000
Hiroki Tsuda, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A memory access method and system which solve the problems of degradation of data transfer efficiency due to memory access waiting period and complexity of memory interface. The system has an address buffer for reading an address in synchronization with a clock, and a burst counter which generates an address of burst length. Further, a ROW address register adjusts timing by latching a ROW address, and similarly a COLUMN address register adjusts timing by latching a COLUMN address. A ROW address decoder decodes the ROW address while a COLUMN address decoder sets the decodes the COLUMN address. The system also includes a mode register which sets the operation mode of the DRAM and a command decoder which interprets and discriminates a command signal. Finally, a controller controls the operation of the overall DRAM, and a memory array holds data for use with a data input/output buffer for data transmission/reception.