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. 29, 1998
Filed:
Apr. 29, 1993
British Telecommunications public limited company, London, GB;
Abstract
A head-end station (1) is provided for a passive optical network system arranged to transmit downstream TDMA frames and receive upstream TDMA frames. The head-end station (1) comprises a TDMA master (5) and a plurality of optical stages (4a, 4b) connected in common to the TDMA master (5). The TDMA master (5) assembles incoming data into downstream TDMA frames and demultiplexes upstream TDMA frames. Each optical stage (4a, 4b) is arranged to be connected to a different respective fiber network (3a, 3b) and includes an optical transmitter which modulates an optical signal with downstream TDMA frames from the TDMA master (5) together with an optical receiver arranged to detect an optical signal carrying upstream TDMA frames.