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. 14, 1993
Filed:
Feb. 05, 1993
Gerald F Sauter, Eagan, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
Dual transmitter-receiver repeaters are provided on a GRIN rod lens optical bus to boost the optical signals that are transmitted on the bus. Only one of the repeaters is operative as a repeater at a time such that when an activated repeater fails, the other repeater is activated to operate as a repeater to replace the failed one. Repeaters, in alternate embodiments, may be located together on the optical backplane, may be on adjacent cards on the electrical backplane, may be on separate cards located at opposite ends of the optical backplane, or may be located on the same card on the electrical backplane. When the repeaters are located on adjacent cards on the electrical backplane, a prism is secured to the last optical tap prism in the transmitting light path to allow the repeaters to communicate with the information processing receivers and transmitters of the optical bus. When the repeaters are located on opposite ends of the optical backplane, the intermediate optical tap prisms are each coupled to mirrors that allow both repeaters to communicate with the information processing receivers and transmitters of the optical bus.