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公开(公告)号：US20170105063A1
公开(公告)日：2017-04-13
申请号：US14878215
申请日：2015-10-08
Applicant: MediaTek Inc.
Inventor： Jing-Yi HUANG , Kuan-Ta CHEN , Chih-Ping LIN
CPC classification number: H04R1/1041 , H04R1/1033 , H04R29/001 , H04R2460/03 , H04R2460/15 , H04R2499/11
Abstract: A portable device and a method for entering a power-saving mode are provided. An audio signal is transmitted to an earphone via a cable. At least one electrical characteristic on the cable is sensed to generate at least one sensing signal. The at least one sensing signal is sampled to generate at least one data signal. Whether the earphone is in listening position is determined according to the at least one data signal. When it is determined that the earphone is not in listening position, the portable device enters a power-saving mode.
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公开(公告)号：US20180279035A1
公开(公告)日：2018-09-27
申请号：US15989501
申请日：2018-05-25
Applicant: MEDIATEK INC.
Inventor： Jing-Yi HUANG , Kuan-Ta CHEN , Chih-Ping LIN
CPC classification number: H04R1/1041 , H04R1/1033 , H04R29/001 , H04R2460/03 , H04R2460/15 , H04R2499/11
Abstract: A portable device and a method for entering a power-saving mode are provided. Audio stream is generated by an audio player, and an audio signal is generated according to the audio stream and then transmitted to an earphone via a cable by a digital-analog converter. At least one electrical characteristic on the cable is sensed to generate at least one sensing signal. The at least one sensing signal is sampled to generate at least one data signal. Whether the earphone is inserted into an ear canal is determined according to the at least one data signal. For determining whether the earphone is inserted into the ear canal, an impedance frequency response related to the earphone is obtained according to the at least one data signal, and whether the earphone is inserted into the ear canal is determined according to a characteristic of peaks of the impedance frequency response.
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