Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1994-06-13
1995-11-14
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250205, G01J 132
Patent
active
054669227
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).
REFERENCES:
patent: 3800078 (1974-03-01), Cochran et al.
patent: 5032712 (1991-07-01), Ito
patent: 5189290 (1993-02-01), Tsutsui
Bertrand Dominique
Gatto Jean-Marie
Internationale Des Jeux
Le Que T.
Westin Edward P.
LandOfFree
Device for analyzing information carriers provided with means of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for analyzing information carriers provided with means of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for analyzing information carriers provided with means of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1222867