Pumps – Condition responsive control of pump drive motor – Responsive to pump or pump fluid temperature
Reexamination Certificate
2006-04-18
2006-04-18
Freay, Charles G. (Department: 3746)
Pumps
Condition responsive control of pump drive motor
Responsive to pump or pump fluid temperature
C417S045000, C417S044100, C318S400260, C318S471000, C318S599000, C318S472000, C318S634000
Reexamination Certificate
active
07029239
ABSTRACT:
A system may include a PWM generator and control logic. The PWM generator is configured to generate a PWM signal having a duty cycle dependent on a duty cycle value generated by the control logic. The control logic is configured to generate the duty cycle value to have a piecewise linear relationship with temperature such that at least two of a plurality of linear segments defined by the piecewise linear relationship have different slopes. In some embodiments, the piecewise linear relationship may be continuous.
REFERENCES:
patent: 4727468 (1988-02-01), Maekawa
patent: 4933535 (1990-06-01), Zabinski
patent: 5307439 (1994-04-01), Enami
patent: 5727928 (1998-03-01), Brown
patent: 5825972 (1998-10-01), Brown
patent: 5942866 (1999-08-01), Hsieh
patent: 6051952 (2000-04-01), Moreira et al.
patent: 6188189 (2001-02-01), Blake
patent: 6208538 (2001-03-01), Halamik et al.
patent: 6226324 (2001-05-01), Allstrom
patent: 6504338 (2003-01-01), Eichorn
patent: 6519167 (2003-02-01), Nguyen
patent: 6528987 (2003-03-01), Blake et al.
patent: 6661679 (2003-12-01), Yang et al.
patent: 6737766 (2004-05-01), Burrola et al.
patent: 6757592 (2004-06-01), Henderson et al.
patent: 6762745 (2004-07-01), Braun et al.
patent: 2004/0040318 (2004-03-01), Getz et al.
Analog Devices, Publication ADM1027, “dBCOOL™ Remote Thermal Controller and Voltage Monitor,” 2003, 56 pages.
National Semiconductor Corporation, Publication LM63, “±1° C. Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control,” Feb. 2003, 28 pages.
Stephen Ohr, “Analog IC vendors find ‘Intel Inside’ a safe bet,” Sep. 12, 2002, online at http://www.eetimes.com/story/OEG20020912S0026.
Marando Eileen M.
Schoepflin Robert W.
Freay Charles G.
Hood Jeffrey C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Sayoc Emmanuel
Standard Microsystems Corporation
LandOfFree
Piecewise linear control of the duty cycle of a pulse width... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piecewise linear control of the duty cycle of a pulse width..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piecewise linear control of the duty cycle of a pulse width... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3538536