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:
Jun. 12, 2018
Filed:
Feb. 25, 2014
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Toshifumi Miyake, Isesaki, JP;
Yusuke Abe, Isesaki, JP;
Koji Yuasa, Isesaki, JP;
Toshihisa Arai, Isesaki, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
An electronic control unit includes: a nonvolatile memory capable of erasing data in units of erasure blocks and also writing data in units of write blocks smaller than the erasure blocks; and a processor. In response to a data rewrite request from outside, the processor of the electronic control unit erases data in a portion of the nonvolatile memory in units of erasure blocks and writes data into the portion of the nonvolatile memory in units of write blocks. The amount of data sent to the electronic control unit from outside is thereby decreased and the time needed to rewrite data in the nonvolatile memory is reduced.