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:
Jul. 08, 2014
Filed:
Jul. 31, 2009
Joanna Duligall, Gloucester, GB;
Timothy Spiller, Bristol, GB;
Radu Ionicioiu, Bristol, GB;
Raymond G. Beausoleil, Redmond, WA (US);
David A. Fattal, Mountain View, CA (US);
Joanna Duligall, Gloucester, GB;
Timothy Spiller, Bristol, GB;
Radu Ionicioiu, Bristol, GB;
Raymond G. Beausoleil, Redmond, WA (US);
David A. Fattal, Mountain View, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A handheld device includes: a transmitter or receiver of a signal beam for quantum key distribution; and a source of alignment beams that diverge from each other in a pattern that matches sensors on a station containing a receiver or transmitter for the quantum key distribution. The alignment beams from the handheld device are of sufficient intensity to produce on the station visible spots that facilitate manual alignment of the handheld device. The station can measure a position and a direction of respective alignment beams and dynamically steer the signal beam according to the measurements.