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:
Nov. 29, 2011
Filed:
Sep. 29, 2006
Robin S. Boyce, Pleasanton, CA (US);
Brad Nordstrom, Alameda, CA (US);
Arie Ravid, Fremont, CA (US);
Hui Wang, San Ramon, CA (US);
Robin S. Boyce, Pleasanton, CA (US);
Brad Nordstrom, Alameda, CA (US);
Arie Ravid, Fremont, CA (US);
Hui Wang, San Ramon, CA (US);
Nellcor Puritan Bennett LLC, Boulder, CO (US);
Abstract
Switchover of a filtered and unfiltered pulse oximetry sensor is provided with gain controlled amplifiers controlled by separate gain control voltages that may change in opposite directions over a period of time. The outputs of the gain controlled amplifiers may be coupled to voltage-to-current converters whose outputs may be coupled in parallel. The parallel coupled outputs of the voltage-to-current converters may produce a current signal representative of the output of the gain controlled amplifier having the highest gain/signal.