| 摘要 |
According to one embodiment of the invention, a data transmission apparatus is adapted with a function for receiving broadcast data in response to a request from a terminal and for controlling a supply of power to different units of the data transmission apparatus. The data transmission apparatus comprises a power supply unit, a first receiving unit, a second receiving unit and a communication unit to support communications between an external network and a local network including a plurality of terminals. The data transmission apparatus further comprises a system control unit and optionally a power supply control unit for controlling the power supply unit based on states of use of the first receiving unit and the second receiving unit by individually powering on/off the first receiving unit and the second receiving unit while the communication unit is powered on.
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