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:
Feb. 22, 2011
Filed:
Feb. 28, 2007
Costanzo Difazio, East Patchogue, NY (US);
Dmitriy Yavid, Stony Brook, NY (US);
Miklos Stern, Woodmere, NY (US);
Chinh Tan, Setauket, NY (US);
Askold Strat, Sound Beach, NY (US);
Daniel Gonzalez, Setauket, NY (US);
Costanzo Difazio, East Patchogue, NY (US);
Dmitriy Yavid, Stony Brook, NY (US);
Miklos Stern, Woodmere, NY (US);
Chinh Tan, Setauket, NY (US);
Askold Strat, Sound Beach, NY (US);
Daniel Gonzalez, Setauket, NY (US);
Microvision, Inc., Redmond, WA (US);
Abstract
An arrangement for improving performance of a sensor operative for collecting light from a target to generate a data signal in a presence of ambient light, includes a sample and hold circuit for operating the sensor during a sampling time period in which the sensor only collects the ambient light to generate an ambient signal, and during a holding time period in which the sensor collects both the ambient light and the light from the target to generate a composite signal comprised of the ambient signal and the data signal; and a subtracting circuit operative for subtracting the ambient signal from the composite signal to produce the data signal as an output.