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. 01, 1998
Filed:
Apr. 23, 1996
Osamu Ishikawa, Tokyo, JP;
Toshikazu Ito, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
A memory controller has an address counter, a control circuit, and registers for receiving and storing a starting address, a block fetch size value, and write data. The address counter counts from the starting address, thereby generating successive addresses from which data in a memory device are read. When the amount of data designated by the block fetch size value has been read, the control circuit reloads the starting address into the address counter, the address counter generates the same successive addresses again, and the write data are written at these addresses. A block read-and-clear or block read-and-replace operation is thereby carried out. The memory controller may also have registers for storing the read data, and a logic operation circuit for combining the read and write data to carry out a block read-modify-write operation.