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:
Oct. 15, 1991
Filed:
Mar. 14, 1989
Applicant:
Inventors:
Shigeo Kuboki, Nakaminato, JP;
Norihiko Sugimoto, Katsuta, JP;
Syunji Inada, Hitachi, JP;
Masahiro Ueno, Hitachi, JP;
Takeshi Harakawa, Hadano, JP;
Kazuhisa Inada, Hitachi, JP;
Toshihiko Tominaga, Katsuta, JP;
Yasushi Nakamura, Hitachiohta, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Engineering Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 19 ; 371 165 ; 371 291 ;
Abstract
In a program control apparatus with a program ROM which forms sequence control signals for executing various control actions according to specified conditions, a memory circuit is provided which is activated during a particular operation mode to successively store information corresponding to the external conditions and also information on times taken by the operation sequence of the program control apparatus.