POTABLE AUIDO APPARATUS FOR SAVING POWER AND METHOD SAVING POWER THEREOF

摘要

We unveil balanced audio cables for portable audio devices. The present invention provides a balanced port for outputting a 4-pole analog signal in a balanced manner, an earphone port for outputting a ground signal and at least one sound source signal in an unbalanced manner, a digital signal corresponding to a digital sound source, and receiving the received digital signal. DA converter for converting and outputting 4-polar analog signals corresponding to the balanced method, a first amplifier for amplifying and outputting 4-polar analog signals, and converting 4-polar analog signals into at least one sound source signal to the earphone port. Determine whether or not a terminal is inserted into the switch unit, the balance port, and the earphone port for outputting the second amplifying unit and the four-pole analog signal applied from the first amplifying unit to the balanced port and the second amplifying unit. And a controller for activating the first and second amplifiers according to the result.