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. 04, 2003
Filed:
Jan. 31, 2002
Koichi Kimura, Yokohama, JP;
Toshihiko Ogura, Ebina, JP;
Hiroaki Aotsu, Yokohama, JP;
Mitsuru Ikegami, Kanagawa-ken, JP;
Tadashi Kuwabara, Yokohama, JP;
Hiromichi Enomoto, Hadano, JP;
Tadashi Kyoda, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A memory device which includes dynamic random access memories for effecting data read and write operations, first and second data terminals for receiving data, and a controller having a first data input connected to receive first data, a second data input connected to receive second data, a third data input connected to receive a function mode signal, and operation unit for executing operations between the first data and the second data. The operation unit includes a function setting unit for setting a function indicated by a function mode signal prior to receipt of the first data. The second data is read out of a selected part of the storage locations. The operation corresponding to the set function is executed for the first and second data. The operation result is written into the selected part of the storage locations during one memory cycle.