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. 10, 2011
Filed:
Apr. 28, 2005
Michael Ohm, Stuttgart, DE;
Timo Pfau, Stuttgart, DE;
Michael Ohm, Stuttgart, DE;
Timo Pfau, Stuttgart, DE;
Universitat Stuttgart, , DE;
Abstract
The invention refers to a device () for decoding an optical multi-level DPSK signal (E), the device () comprising: means for receiving the multi-level DPSK signal (E); at least two means () for transforming optical multi-level DPSK signals (E) into corresponding analog electrical signals (i); means () for splitting up the received multi-level DPSK signal (E) into at least two optical multi-level DPSK signals (E), one for each of the opto-electrical transforming means (); means () for processing electrical signals (i, e); and at least two means () for transforming the analog electrical signals (i) into corresponding electrical logical binary signals (e). In order to provide multi-level DPSK receiver () with a reduced complexity, it is suggested that concerning the signal flow within the device () the analog-to-logical-binary transformation means () are disposed before the processing means () and that the processing means () process electrical logical binary signals (e).