Patent ID: 7983641
Filing Date: 2011-07-19
Classification: H04N

Abstract:
1. A cable communication apparatus, comprising: a branching filter branching a downstream first RF signal sent from a CATV network and an upstream second RF signal which is in a frequency band different from a frequency band of the first RF signal, according to the frequency bands; a gain adjusting unit adjusting a gain of the first RF signal received through the branching filter, upon receiving a control or an operation; a splitter distributing the first RF signal gain-adjusted by the gain adjusting unit to a plurality of lines; a receiving unit having an auto gain control circuit controlling a gain of the first RF signal of at least one line out of the plural lines to which the first RF signal is distributed by the splitter, and obtaining a data processing reception signal from the signal gain-controlled by the auto gain control circuit; a memory storing gain adjustment states of the gain adjusting unit and level correction values of the first RF signal in correspondence to each other; and a reception level notifying unit calculating a reception level of the reception signal by using the level correction value of the first RF signal, which is read from the memory according to the gain adjustment state of the gain adjusting unit, and information indicating a reception state of the reception signal, and transmitting the calculated reception level on the CATV network through the branching filter by the second RF signal.