HK1060832A2 - Switching circuit built in ic for earphone and loudspeaker of portable information device - Google Patents

Switching circuit built in ic for earphone and loudspeaker of portable information device

Info

Publication number
HK1060832A2
HK1060832A2 HK04103787A HK04103787A HK1060832A2 HK 1060832 A2 HK1060832 A2 HK 1060832A2 HK 04103787 A HK04103787 A HK 04103787A HK 04103787 A HK04103787 A HK 04103787A HK 1060832 A2 HK1060832 A2 HK 1060832A2
Authority
HK
Hong Kong
Prior art keywords
earphone
loudspeaker
switching circuit
portable information
information device
Prior art date
Application number
HK04103787A
Other languages
English (en)
Inventor
Wei Cheng Lin
Yung Ming Lee
Original Assignee
Princeton Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Princeton Technology Corp filed Critical Princeton Technology Corp
Publication of HK1060832A2 publication Critical patent/HK1060832A2/xx

Links

HK04103787A 2003-05-31 2004-05-27 Switching circuit built in ic for earphone and loudspeaker of portable information device HK1060832A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03263338 CN2634768Y (zh) 2003-05-31 2003-05-31 便携式信息装置中内建于集成电路的耳机与扬声器切换电路

Publications (1)

Publication Number Publication Date
HK1060832A2 true HK1060832A2 (en) 2004-07-23

Family

ID=33426313

Family Applications (1)

Application Number Title Priority Date Filing Date
HK04103787A HK1060832A2 (en) 2003-05-31 2004-05-27 Switching circuit built in ic for earphone and loudspeaker of portable information device

Country Status (2)

Country Link
CN (1) CN2634768Y (zh)
HK (1) HK1060832A2 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100346288C (zh) * 2004-10-20 2007-10-31 大竑企业股份有限公司 具有切换声音输出的计算机系统及其切换声音输出的方法
CN1942016B (zh) * 2005-09-27 2010-12-29 普诚科技股份有限公司 充电电路、集成电路及控制方法
EP2632174B1 (en) * 2012-02-27 2016-10-26 ST-Ericsson SA A circuit for use with a loudspeaker for portable equipments
CN111294702B (zh) * 2017-01-06 2021-12-21 上海艾为电子技术股份有限公司 音频控制系统和音频系统

Also Published As

Publication number Publication date
CN2634768Y (zh) 2004-08-18

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Legal Events

Date Code Title Description
PF Patent in force
PEU Short-term patents expired

Effective date: 20120526