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. 09, 2008
Filed:
Apr. 25, 2005
Wei-jen Chen, Banqiao, TW;
Shih-hung Lin, Hsinchu, TW;
Yao-huang Hsieh, Zhubei, TW;
Mediatek Incorporation, Hsin-Chu, TW;
Abstract
A microprocessor system contains a read-only memory (ROM) for storing programs or firmware. Retrieval and execution of program code is controlled by a microprocessor address bus. Erroneous data in the ROM can be corrected by address comparison and translation. Trap, region, and patch tables are provided to store addresses, regions, and translated addresses. An address issued by the microprocessor is stored in the trap and region tables can be translated for selecting another programmable device, such as a SRAM or DRAM, other than the original ROM. Thus, erroneous code in the ROM can be corrected, inserted, or replaced.