Data processing: generic control systems or specific application – Specific application – apparatus or process – Electrical power generation or distribution system
Reexamination Certificate
2007-11-13
2007-11-13
Masinick, Michael D. (Department: 2125)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Electrical power generation or distribution system
C700S297000, C307S100000, C322S083000
Reexamination Certificate
active
11411948
ABSTRACT:
The load drive apparatus has a driver unit and a control unit. The driver unit includes a control section modulating, in accordance with a PWM signal supplied from the control unit, a drive signal to be applied to a load apparatus between a high level and a low level, and a short circuit detecting section detecting, on the basis of a signal level of the PWM signal and a signal level of the modulated drive signal, short circuit on a path through which the modulated drive signal is applied to the load apparatus. The control unit includes a function of fixing a duty ratio of the PWM signal upon occurrence of short circuit to determine to which of a high-level side and a low-level side the path is short-circuited.
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EPO Search Report and Opinion dated Aug. 7, 2006.
Denso Corporation
Masinick Michael D.
Nixon & Vanderhye P.C.
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