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. 14, 1995
Filed:
Jun. 13, 1994
Jean-Marie Gatto, Paris, FR;
Dominique Bertrand, Paris, FR;
Internationale Des Jeux, , FR;
Abstract
Device for analyzing information carriers comprising an image detector (1) including, in a housing (9), a series of light sources (10) with each of which is associated a photosensitive element (16) with the light sources (10) and the photosensitive elements (16) arranged in two rows along the length of the image detector (1). The device also includes a threshold voltage source (6) and a comparator (5) for comparing the output signals from each of the photosensitive elements (16) with a threshold voltage (Vs) of the voltage source (6). Moreover, the device includes a compensation circuit (20, 21, 22, 23, 24, 25) for varying at least one of the parameters comprising the output signal of each photosensitive element (16), the threshold voltage (Vs), and the intensity of the light signal emitted by the associated light source (10) in order to obtain a uniform response from all the photosensitive elements (16) of the image detector (1).