Patent ID: 7260729

Claim:
An electronic device comprising: a first circuit block which executes a data processing, the first circuit block including a stream controller that receives broadcast stream data and an I/O processor that processes input/output data; a second circuit block which executes network routing and file processing, the second circuit block containing a network controller that executes data communication via a network, a hard disk drive (HDD) that stores data, and an HDD controller that controls the HDD; and a controller which selects an operating mode from among a plurality of operating modes, the plurality of operating modes including: i) a mechanical-off mode in which a power switch turns off and a system does not operate but power is supplied to a real time clock timer, ii) a standby mode in which power of the system is turned off but power is supplied to a power management microcomputer or its equivalent hardware to receive wakeup event, iii) a run mode in which power is supplied to at least the first circuit block and the second circuit block, and iv) a network/file server mode to allow a service of network routing using a router function in which power is supplied to at least the network controller in the second circuit block to enable the router function but power is not supplied to the first circuit block, and to allow a service of file processing using a file server function in which power is supplied to at least the HDD and the HDD controller in the second circuit block to enable the file server function but power is not supplied to the first circuit block, the network/file server mode being capable of shifting to/from any one of the mechanical-off mode, the standby mode, and the run mode.