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:
Dec. 27, 1988
Filed:
Dec. 23, 1986
Kunio Ooba, Hyogo, JP;
Tooru Kojima, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a storage unit equipped with a Reliablity, Availability and Serviceability (RAS) circuit, including a memory unit constructed of, e.g., a dynamic random access memory (DRAM) unit, for storing data with an error coding code (ECC), and an ECC unit constructed of e.g., an ECC checking circuit, for correcting a 1-bit error and detecting a 1-bit error, or more than 2-bit error contained in the data read from the memory unit, an ECC diagnostic unit is connected between said memory unit and said ECC unit, and an error made concerning the memory unit and ECC unit is diagnosed by the ECC diagnostic unit by selectively inverting the data read from the memory unit into diagnostic data during the checking operation of the ECC units to diagnose proper operation of the ECC unit and detect erros.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile