LED forward voltage estimation in pulse oximeter

Details LED forward voltage estimation in pulse oximeter LED forward voltage estimation in pulse oximeter

2006-10-10

2006-10-10

Winakur, Eric (Department: 3768)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

Reexamination Certificate

active

07120480

ABSTRACT:
An apparatus and method for determining if a forward voltage of an LED in a pulse oximeter is within a predetermined range. This is accomplished by measuring the current through the LED, and also by knowing the duty cycle of the pulse width modulator (PWM) drive signal to the LED.

REFERENCES:
patent: 4802486 (1989-02-01), Goodman et al.
patent: 4911167 (1990-03-01), Corenman et al.
patent: 4928692 (1990-05-01), Goodman et al.
patent: 4934372 (1990-06-01), Corenman et al.
patent: 5351685 (1994-10-01), Potratz
patent: 5368026 (1994-11-01), Swedlow et al.
patent: 5590652 (1997-01-01), Inai
patent: 5662106 (1997-09-01), Swedlow et al.
patent: 5713355 (1998-02-01), Richardson et al.
patent: 5746697 (1998-05-01), Swedlow et al.
patent: 5803910 (1998-09-01), Potratz
patent: 5859658 (1999-01-01), Hammond
patent: 5921921 (1999-07-01), Potratz et al.
patent: 5924979 (1999-07-01), Swedlow et al.
patent: 6226539 (2001-05-01), Potratz
patent: 6356774 (2002-03-01), Bernstein et al.
patent: 6560470 (2003-05-01), Pologe
patent: 0477417 (1990-09-01), None
patent: WO 03/068060 (2003-08-01), None

Affiliated with

Also associated with

Rating

LED forward voltage estimation in pulse oximeter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LED forward voltage estimation in pulse oximeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LED forward voltage estimation in pulse oximeter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3666936