Patent ID: 8682161
Filing Date: 2014-03-25
Classification: H04B

Abstract:
1. An optical data transmission system for transmitting optical data, comprising: a head end for sending and receiving optical data; a first optical splitter that is a passive element; a second optical splitter that is a passive element; N (N is an integer larger than 1) units of terminals for outputting video, audio, and/or other data by processing optical data received from the first optical splitter; a plurality of optical cables for transmitting optical data, connected between the head end and the first optical splitter and between the first optical splitter and the terminals; and a seat group including N sets of seats disposed close to one another, wherein the N units of terminals are disposed in association with the respective N sets of seats, wherein the first optical splitter is an unbalanced optical splitter, wherein the first optical splitter splits one series of optical data from the head end into (i) a first optical output of a large optical intensity and (ii) a second optical output of an optical intensity smaller than the optical intensity of the first optical output, wherein the first optical output (i) sends the second optical output to the N units of terminals associated with the seat group and (ii) sends the first optical output to the second optical splitter, and wherein a ratio of the total optical power of the second optical output to the total optical power of the first optical output is a ratio of (i) the number of the N units of terminals to (ii) the number of M units of terminals downstream of the second optical splitter.