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. 24, 2019
Filed:
Dec. 22, 2017
Industrial Technology Research Institute, Hsinchu, TW;
Chih-Yen Lo, Hsinchu, TW;
Jenn-Shiang Lai, Miaoli County, TW;
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu, TW;
Abstract
A memory controller accessing a memory including a plurality of blocks is provided. The memory controller includes a storage circuit and a control circuit. The storage circuit stores a refresh value and a data table. The data table has a plurality of bits. Each bit indicates whether a corresponding block has valid data. The control circuit selects a specific block according to the refresh value and determines whether the specific block stores valid data according to the data table. When the specific block stores valid data, the control circuit accesses the memory after a first waiting time. When the specific block does not store any data or stores invalid data, the control circuit accesses the memory after a second waiting time. The second waiting time is shorter than the first waiting time.