Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of changing over path switch in optical transmission device

Method of changing over path switch in optical transmission device

US Patent 5446725 · Granted Aug 29, 1995

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Optical transmission apparatus monitoring optical performance2006
Error correcting method and apparatus2004
Signal transmitter and signal quality monitoring device2003
Error correction method and transmission apparatus2002
Alarm detection apparatus2001
Transmission device and system having the same2001
Add-drop multiplexer with enhancement of accessibility to signals in different h1998
Transmission system1996
Apparatus for detecting error in a communications line1996
Terminal equipment and optical communication system using the same1994