Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2011-04-19
2011-04-19
Liu, Li (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S069000, C398S070000, C398S072000, C398S079000, C398S158000, C398S159000, C398S192000, C398S194000
Reexamination Certificate
active
07929862
ABSTRACT:
After implementing a scrambler upon an electric signal of digital signals to be transmitted to a user terminal, this electric signal is converted into a digital optical signal, and an analog optical signal and this digital optical signal are multiplexed by wavelength division multiplexing, thereby reducing influence of cross-talk interference that is exerted on the analog optical signal by the digital optical signal.
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Hakomori Katsuhiko
Ichikawa Akihiko
Nishimoto Hiroshi
Fujitsu Limited
Liu Li
Staas & Halsey , LLP
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