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:
Dec. 20, 1988
Filed:
May. 12, 1987
Applicant:
Inventor:
Hans-Norbert Toussaint, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455619 ; 455608 ; 330308 ;
Abstract
A receiver for optical digital signals which have different amplitudes which comprises a transimpedance amplifier which has a photodiode connected to its input and which produces an output that is supplied to one of the inputs of a comparator. Oppositely poled diodes are connected between the inputs of the comparator and a reference voltage is supplied to the other input of the comparator and a capacitor is connected to the other input of the comparator which together with a resistor comprises a differentiator for the output signals of the transimpedance amplifier.