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:
May. 15, 2001
Filed:
Jul. 29, 1999
Applicant:
Inventors:
John Whelan, Glasgow, GB;
Graham Henry Stout, Glasgow, GB;
Assignee:
Atmel Research, Georgetown, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 4/014 ;
U.S. Cl.
CPC ...
H01J 4/014 ;
Abstract
A light detection device has a biasing transistor (,) arranged to provide a bias current and a reverse biased transistor. The reverse biased transistor has a drain terminal (,) coupled via a high impedance resistor (,) to the supply voltage. Incident visible light is detected by a voltage drop at the drain electrode.