| 摘要 |
A data transmission apparatus includes a power supply unit that outputs a first power, a second power and a third power, a communication unit that is driven by the first power and executes data transmission between an external network and a local network to which a plurality of terminals are connected, a first receiving unit that is driven by the second power and receives broadcast data in response to a broadcast data reception request from each of the terminals, a second receiving unit that is driven by the third power and receives content data from an external device in response to a content data reception request from each of the terminals, and a unit configured to control the power supply unit based on states of use of the first and second receiving units to individually power on/off the first and second receiving units while the communication unit is powered on.
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