Interactive video distribution systems – Video distribution system with upstream communication – Transmission network
Reexamination Certificate
2006-08-15
2006-08-15
Miller, John (Department: 2623)
Interactive video distribution systems
Video distribution system with upstream communication
Transmission network
C725S126000, C725S129000, C725S149000, C455S014000, C455S015000, C375S257000
Reexamination Certificate
active
07093276
ABSTRACT:
In a CATV trunk amplifier, a downward signal input to an input terminal from the center equipment side is input to a downward amplifying circuit via a first filter and a second filter. The amplified downward signal is output to the terminal device side via the second filter, the first filter, and an output terminal. An upward L signal is input from the terminal device side via the output terminal to an upward L amplifying circuit via the first filter and a third filter. The amplified upward L signal is output to the center equipment side via the third filter, the first filter, and the input terminal. An upward H signal is input to an upward H amplifying circuit via a fourth filter. The amplified upward H signal is output to the center equipment side via the fourth filter and the input terminal.
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Harry Newton, Newton's Telecom Dictionary, Feb. 2002, CMP Books, Eighteenth Edition, pp. 49 and 623.
Goto Hironori
Sugiura Toshihiro
Hoye Michael W.
Masprodenkoh Kabushikikaisha
Miller John
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