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. 17, 2009
Filed:
Dec. 21, 2005
David Skurnik, Kirkland, WA (US);
Mark Freeman, Snohomish, WA (US);
Randy Sprague, Carnation, WA (US);
Margaret Brown, Seattle, WA (US);
Harpal Sira, Surrey, CA;
David Skurnik, Kirkland, WA (US);
Mark Freeman, Snohomish, WA (US);
Randy Sprague, Carnation, WA (US);
Margaret Brown, Seattle, WA (US);
Harpal Sira, Surrey, CA;
Microvision, Inc., Redmond, WA (US);
Abstract
A circuit for detecting a phase error between a clock signal and a beam position includes a beam generator, a sensor, and a phase detector. The beam generator directs a beam toward a beam sweeper in response to the clock signal, and the sensor detects the beam as directed from the beam sweeper. The phase detector determines from the detected beam the error in the clock phase relative to the beam position. Such a circuit can automatically detect the phase error in the pixel clock and correct this error, thus eliminating the need for a manual phase-error corrector. The circuit may also be able to adjust the width and/or the height of a scan region, and thus may also be able to adjust the width and/or height of an image frame within the scan region.