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:
Jan. 29, 2013
Filed:
Feb. 19, 2009
Pascal Heim, Saint-Aubin, CH;
Pierre-francois Ruedi, Marin-Epagnier, CH;
Pascal Heim, Saint-Aubin, CH;
Pierre-Francois Ruedi, Marin-Epagnier, CH;
Abstract
A digital vision sensor includes a pixel array () for receiving a light beam representing a visual scene. The sensor includes: a reference voltage Vgenerator; in each pixel, an element for generating, during an integration phase, a voltage Vthat is proportional to the received lighting and a comparator () for determining the moment when the voltage Vthereof reaches the reference voltage; a logarithmic period generator for generating a clock having a period that increases proportionally to the time elapsed from the beginning of the integration; a device for counting the number of clock periods elapsed from the beginning of the integration and providing a result in the form of a binary code; a static RAM memory word () per pixel; and, in each pixel, an element () for writing the code present at the moment into the memory.