WO2008026162A3 - Audio system and method for managing power - Google Patents

Audio system and method for managing power Download PDF

Info

Publication number
WO2008026162A3
WO2008026162A3 PCT/IB2007/053455 IB2007053455W WO2008026162A3 WO 2008026162 A3 WO2008026162 A3 WO 2008026162A3 IB 2007053455 W IB2007053455 W IB 2007053455W WO 2008026162 A3 WO2008026162 A3 WO 2008026162A3
Authority
WO
WIPO (PCT)
Prior art keywords
headphone
audio player
player device
audio system
managing power
Prior art date
Application number
PCT/IB2007/053455
Other languages
French (fr)
Other versions
WO2008026162A2 (en
Inventor
Koning Lambertus F M De
Dirk W J Groeneveld
Original Assignee
Nxp Bv
Koning Lambertus F M De
Dirk W J Groeneveld
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 Nxp Bv, Koning Lambertus F M De, Dirk W J Groeneveld filed Critical Nxp Bv
Publication of WO2008026162A2 publication Critical patent/WO2008026162A2/en
Publication of WO2008026162A3 publication Critical patent/WO2008026162A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Headphones And Earphones (AREA)

Abstract

An audio system monitors the presence/absence of a headphone that can be connected to a portable audio player device and controls the on and off state of the device. It is logical to switch on the audio player device when the headphone is inserted in the headphone jack. The design results in minimal power consumption, because the audio player device remains in a power-off condition as long as no headphone is present. As soon as a headphone is inserted into the audio player device, the device switches to a power-on state. This makes the audio player device easy to use.
PCT/IB2007/053455 2006-08-30 2007-08-28 Audio system and method for managing power WO2008026162A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06119743.0 2006-08-30
EP06119743 2006-08-30

Publications (2)

Publication Number Publication Date
WO2008026162A2 WO2008026162A2 (en) 2008-03-06
WO2008026162A3 true WO2008026162A3 (en) 2008-05-08

Family

ID=39052653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/053455 WO2008026162A2 (en) 2006-08-30 2007-08-28 Audio system and method for managing power

Country Status (1)

Country Link
WO (1) WO2008026162A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2465695B (en) * 2007-12-28 2010-10-27 Wolfson Microelectronics Plc Amplifier circuit
GB2456005B (en) * 2007-12-28 2013-03-06 Wolfson Ltd Amplifier circuit
US9479868B2 (en) 2013-09-16 2016-10-25 Cirrus Logic, Inc. Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US9438982B2 (en) 2013-09-16 2016-09-06 Cirrus Logic, Inc. Systems and methods for detection of load impedance of a transducer device coupled to an audio device
BE1022126B1 (en) * 2014-07-31 2016-02-17 Televic Conference Nv PORTABLE DEVICE FOR RECEIVING WIRELESS SPREAD AUDIO SIGNALS

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10241795A (en) * 1997-02-25 1998-09-11 Matsushita Electric Works Ltd Jack
JPH10340517A (en) * 1997-06-05 1998-12-22 Sanyo Electric Co Ltd Portable computer
WO2006045617A2 (en) * 2004-10-25 2006-05-04 Nokia Corporation Detection, identification and operation of pherpherals connected via an audio/video-plug to an electronic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10241795A (en) * 1997-02-25 1998-09-11 Matsushita Electric Works Ltd Jack
JPH10340517A (en) * 1997-06-05 1998-12-22 Sanyo Electric Co Ltd Portable computer
WO2006045617A2 (en) * 2004-10-25 2006-05-04 Nokia Corporation Detection, identification and operation of pherpherals connected via an audio/video-plug to an electronic device

Also Published As

Publication number Publication date
WO2008026162A2 (en) 2008-03-06

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