Patent ID: 8649821

Claim:
A communication system comprising, a computer comprising: a controller operable to transition between a plurality of power modes, including a normal power mode and at least one power saving mode; an internal amplifier that is enabled or disabled by said controller and that is enabled by a modem of a cellular communicator that is attached to the computer, to receive audio data from said controller when said controller is the normal power mode, and to receive audio data from the modem of the cellular communicator when said controller is in a power saving mode; and a battery to supply power to said amplifier and to said controller when it is in normal power mode; and a cellular communicator attached to said computer, comprising: a modem to communicate over a wireless network, to enable said amplifier when said controller is in a power saving mode, and to transmit audio data to said amplifier; and a power supply of the cellular communicator to supply power to said amplifier.