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:
Mar. 23, 1982
Filed:
Oct. 04, 1979
Applicant:
Inventors:
Robin D Beasley, Chatham, GB;
Edward L Lewis, Maidstone, GB;
Assignee:
Elliott Brothers (London) Limited, Chelmsford, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455606 ; 356 731 ;
Abstract
A self-testing terminal for use in a fibre optic communication system comprising an optical emitter (10) which emits a predetermined amount of light and a comparator (17) which determines whether the amount of such emitted light reflected back from interfaces in the terminal or the system to an optical receiver (11) is greater than a reference value (V.sub.R).