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. 11, 2007
Filed:
Sep. 18, 2001
Gunnar Forsberg, Stockholm, SE;
Gunnar Forsberg, Stockholm, SE;
Transmode Systems AB, Stockholm, SE;
Abstract
The invention concerns a transmitter circuit comprising a light source () and arranged to operate said light source () to transmit optical communication signals in response to balanced electric input signals from a first () and a second () circuit point. The transmitter circuit comprises a first () and a second () circuit branch which extend from said first () and second () points, respectively. The light source () is connected between the circuit branches (). The components which are positioned on the circuit branches () are selected such that the transmitter circuit is formed with a symmetry which is such that, under normal operation conditions, a balanced drive voltage is the case between the connection points () of the light source () on the circuit branches () and such that the modulation current which drives the light source () essentially only depends on the voltage difference between said connection points (). The invention also concerns a communication system which comprises such a transmitter circuit.