Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2011-04-05
2011-04-05
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
Reexamination Certificate
active
07919995
ABSTRACT:
A load controller includes: a first input circuit which detects that a drive instruction signal by an operation of a drive instructing unit is less or equal to a first input threshold value; a first constant current source activated in accordance with the detection; a PWM signal supply unit that is activated by the first constant current source and supplies a PWM signal having a prescribed frequency and a duty ratio; a constant control signal supply unit that supplies a constant control signal during failure of the first input circuit or the first constant current source; a drive control unit that generates a PWM drive control signal in accordance with the PWM signal and generates a constant drive control signal in accordance with the constant control signal; and a load driving element that is controlled by the PWM drive or constant drive control signal to drive a load.
REFERENCES:
patent: 4728861 (1988-03-01), Kurihara
patent: 6781316 (2004-08-01), Oda
patent: 7245163 (2007-07-01), Nakamura
patent: 2002/0171455 (2002-11-01), Tsuchida et al.
patent: 2005/0206436 (2005-09-01), Harriman et al.
patent: 2006/0267665 (2006-11-01), Kawamoto
patent: 2008/0224738 (2008-09-01), Bodano et al.
patent: 61-150847 (1986-07-01), None
patent: 04-292231 (1992-10-01), None
patent: 07-009911 (1995-01-01), None
patent: 07-061285 (1995-03-01), None
patent: 08-008076 (1996-01-01), None
patent: 10-315850 (1998-12-01), None
patent: 2000-185593 (2000-07-01), None
patent: 2001-148294 (2001-05-01), None
patent: 2003-054309 (2003-02-01), None
Japanese Office Action dated Nov. 6, 2009 in Application No. 2007-320548.
Kasai Masahiro
Tanaka Akihiro
Tashiro Tatsumi
Uchikura Tsuyoshi
Yabe Hiroo
Almo Khareem E
Donovan Lincoln
Sughrue & Mion, PLLC
Toyota Jidosha & Kabushiki Kaisha
Yazaki -Corporation
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