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. 02, 2010
Filed:
May. 15, 2007
Torben H. Madsen, Copenhagen, DK;
Torben H. Madsen, Copenhagen, DK;
Jai, Inc. USA, San Jose, CA (US);
Abstract
A camera system comprises a CCD imaging device, an infrared illumination source, and a power modulator for amplitude modulating the infrared illumination, e.g., with a 7-kHz tone. A beam splitter is set in front of the CCD imaging device, and a photo-diode array is attached to the beam splitter to detect modulated infrared light returning from the same field of vision as the CCD imaging device Various tone filters, and triggers connected to the tone filters, will cause the CCD imaging device to take a digital picture when the returning modulated infrared light exceeds some threshold and comes from right areas of a picture frame. Such digital pictures will most probably include an image of a vehicle license plate that can be processed, and the results used to extract the registration data from a database.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile