Cable broadcasting system, cable broadcasting transmitting apparatus, cable broadcasting receiver, open cable broadcasting receiver and cable card

摘要

A cable broadcasting system is provided which includes a cable broadcasting transmitting apparatus and a cable broadcasting receiving apparatus which are connected to a cable network. The cable broadcasting transmitting apparatus includes a broadcasting signal generator, a sensitivity adjusting signal generator which generates a sensitivity adjusting control signal and a transmitter which transmits a cable broadcasting signal and the sensitivity adjusting control signal. The cable broadcasting receiving apparatus includes a sensitivity adjuster which receives the cable broadcasting signal a controller which controls the sensitivity adjuster to adjust sensitivity of the cable broadcasting signal. Thus, a cable broadcasting system, a cable broadcasting transmitting apparatus, a cable broadcasting receiver, an Open Cable broadcasting receiver and a cable card are provided which allow remote adjustment of the sensitivity of a cable broadcasting signal which is supplied to a cable broadcasting receiving apparatus.