| 摘要 |
The present invention relates to an active noise tracking control system which is installed on a wired forwarder apparatus which relays the signals between a subscriber terminal and a broadcast center connected through an HFC transmission network, to control the subscriber signals and noise signals transmitted from the subscriber terminal to the broadcast center through the HFC transmission network. The active noise tracking control system according to an embodiment of the present invention includes: a signal measuring module; a master value setting unit; and a signal control/recovery module. The signal measurement module includes: a low frequency band signal extractor; a signal measurement and determination unit; a sampling/holder unit; a log amplifier; a decibel signal converter unit; and an interrupt signal generation unit. |
