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. 19, 2006
Filed:
Nov. 25, 2003
Yoshinori Ishikawa, Yokohama, JP;
Yukinobu Tada, Yokohama, JP;
Masato Soma, Yokohama, JP;
Dan Aoki, Higashimurayama, JP;
Yoshinori Ishikawa, Yokohama, JP;
Yukinobu Tada, Yokohama, JP;
Masato Soma, Yokohama, JP;
Dan Aoki, Higashimurayama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a control apparatus for operating with program data, it is possible to alter the operation of a control circuit by rewriting the data of the program memory built in an LSI, with ease and at a low cost independently of the operation of the control circuit. For that purpose, the control apparatus includes a ROM, a SRAM, a means for writing data in the SRAM, a selection means for selecting the output from the ROM or the SRAM in accordance with the addresses supplied to the ROM and the SRAM, and a control means for outputting the addresses to the ROM and the SRAM and operating with the output from the selection means as program data.