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:
Aug. 03, 1999
Filed:
Jun. 20, 1997
Yutaka Iizuka, Nara, JP;
Kinya Morinouchi, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
When the contents of a flash ROM which is an electrically rewritable nonvolatile memory are rewritten, after an IPL program for rewriting stored in the flash ROM is transferred to a RAM, mapping of memory space is switched by a switching control circuit. The IPL program transferred to the RAM is protected. The contents of the flash ROM are erased by use of the IPL program, and an updated program supplied through an RS-232C interface is written into the flash ROM. When a bug is caused due to static electricity in the IPL program stored in the flash ROM, an EPROM which is a nonvolatile memory element is attached, an IPL program stored in the EPROM is executed, and the IPL program stored in the EPROM is directly transferred to the flash ROM.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile