Patent ID: 9497531
Filing Date: 2016-11-15
CPC Classification: H04M,H04R

Claim Text:
1. A portable terminal for outputting an audio signal, comprising: an ear jack for connecting the portable terminal to one of an earphone and an external apparatus, wherein the external apparatus includes a speaker without a power amplifier; a baseband modem for detecting whether one of the earphone and the external apparatus is connected to the ear jack based on a voltage value of a signal input from the ear jack; and an amplifier for amplifying the audio signal to be a first audio signal when connection of the external apparatus is detected, and being configured to output the first audio signal to the external apparatus to be output by the speaker of the external apparatus according to a control signal of the controller; wherein the amplifier amplifies the audio signal to be a second audio signal or does not amplify the audio signal, with the non-amplified audio signal or the second audio signal to be output to the earphone when connection of the earphone is detected, and wherein the first audio signal is amplified by a higher power than the second audio signal.