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:
Sep. 11, 1990
Filed:
Jun. 10, 1987
Mark W Kroll, Minnetonka, MN (US);
Mark R Pommrehn, Eden Prairie, MN (US);
Cherne Medical, Inc., Edina, MN (US);
Abstract
The device of the present invention provides a signal modulation system. The system has a first station communicatively connected to an optical fiber. The first station has a transmitter to produce an unmodulated light carrier signal through the optical fiber and a receiver to convert a modulated light signal received from the optical fiber to a demodulated electrical signal for output. The system also has a second station communicatively connected to the optical fiber. The second station has an amplifier and power source which receive input carrier modulating signals, a modulation circuit, and an electro-optical reflector constructed and arranged to modulate reflection of the carrier signal emitted from the transmitter to the receiver via the optical fiber.