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. 24, 2002
Filed:
Jan. 29, 2002
Taizo Kimoto, Tokyo, JP;
Hisaaki Kawano, Chigasaki, JP;
Hiroshi Nakayama, Kawasaki, JP;
Kenji Takano, Tokyo, JP;
Noriyuki Umezawa, Yokohama, JP;
Osamu Takagi, Tokyo, JP;
Satoshi Kinouchi, Tokyo, JP;
Kazuhiko Kikuchi, Yokohama, JP;
Masahiko Ogura, Yokohama, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
When a voltage abnormality error signal from a drive control section is at a low level, a control section determines a normal state. When the voltage abnormality error signal has arisen to a high level, the control section does not immediately determine an abnormal state and instead measures a time in which the voltage abnormality error signal is at the high level. If the measured time does not exceed a predetermined error timer value (limit value) T, the control section ignores this abnormal state as a temporary voltage abnormality. If the time in which the voltage abnormality error signal is at the high level exceeds the error timer value T, the control section determines a serviceman call error (SC) as the occurrence of voltage abnormality.