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:
Jan. 23, 1996
Filed:
Jul. 14, 1994
Koji Sasayama, Saitamaken, JP;
Keishi Habara, Tokyo, JP;
Nippon Telegraph and Telephone Corp., Tokyo, JP;
Abstract
A photonic frequency division multiplexed FIFO buffer capable of realizing a multiple input one output FIFO buffer or a one input one output FIFO buffer by using only a small number of buffers. This buffer is formed by a plurality of loop shaped optical waveguide delay lines for storing the input optical signals from the time division multiplexed input highway, which are connected in series by a plurality of 2.times.2 optical switches for selectively transferring the input optical signals among the loop shaped optical waveguide delay lines. This buffer also includes a 1.times.2 frequency channel selector, connected at a last stage of the loop shaped optical waveguide delay lines, for selectively outputting optical signals in specific frequency channels among the input optical signals stored by the last stage of the loop shaped optical waveguide delay lines as the output optical signals to the timeslots on the time division multiplexed output highway.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile