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. 03, 1991
Filed:
Mar. 19, 1991
Timothy R Block, Rochester, MN (US);
Marcia B Ebler, Rochester, MN (US);
Ladd W Freitag, Rochester, MN (US);
Gerald M Heiling, Rochester, MN (US);
Spencer C Holter, Rochester, MN (US);
Dennis L Karst, Rochester, MN (US);
David W Siljenberg, Rochester, MN (US);
Ronald L Soderstrom, Rochester, MN (US);
John T Trnka, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An optical fiber link card communication module, and process for fabricating the module, where the module provides a parallel electrical interface to the user, facilitates high speed serial transmission of data over an optical data link, and contains a plurality of converters for performing conversions between both electrical and optical signals. A preferred embodiment of the invention contemplates fabricating the optical communication module on a single multilayer card with all the transmitter electrical components being located on one side of the card, all receiver electrical components being located on the other side of the card, and the transmitter and receiver components being separated by shielding layers in the card. By using two transmitter/receiver pairs (with the transmitters and receivers being located on respective sides of the card) an embodiment of the invention provides for double full duplex communications.