WO2007002486A3 - Amplifier and amplification method - Google Patents

Amplifier and amplification method Download PDF

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Publication number
WO2007002486A3
WO2007002486A3 PCT/US2006/024622 US2006024622W WO2007002486A3 WO 2007002486 A3 WO2007002486 A3 WO 2007002486A3 US 2006024622 W US2006024622 W US 2006024622W WO 2007002486 A3 WO2007002486 A3 WO 2007002486A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio signals
amplitudes
amplifier
headphone
raising
Prior art date
Application number
PCT/US2006/024622
Other languages
French (fr)
Other versions
WO2007002486A2 (en
Inventor
Akira Yasuda
Toru Ido
Original Assignee
Texas Instruments Inc
Akira Yasuda
Toru Ido
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
Priority claimed from JP2005182190A external-priority patent/JP2007006012A/en
Application filed by Texas Instruments Inc, Akira Yasuda, Toru Ido filed Critical Texas Instruments Inc
Publication of WO2007002486A2 publication Critical patent/WO2007002486A2/en
Publication of WO2007002486A3 publication Critical patent/WO2007002486A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

An amplifier for a headphone is provided that can increase an upper limit on the amplitude of an audio signal generated between one common terminal and the output terminals of left and right channels, without raising the power supply voltage. The level at a common terminal C is changed corresponding to the average of the input audio signals (ViL, ViR) to increase the amplitudes of the output audio signals (VL, VR). In this way, the amplitudes of audio signals (VL, VR) supplied to the headphone can be increased compared with the case when the level at terminal C is kept constant. Also, the upper limit on the amplitudes of audio signals (VL, VR) can be increased without raising the power supply
PCT/US2006/024622 2005-06-22 2006-06-22 Amplifier and amplification method WO2007002486A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2005-182190 2005-06-22
JP2005182190A JP2007006012A (en) 2005-06-22 2005-06-22 Amplifier and amplification method
US11/425,753 US20070024364A1 (en) 2005-06-22 2006-06-22 Amplifier and amplification method
US11/425,753 2006-06-22

Publications (2)

Publication Number Publication Date
WO2007002486A2 WO2007002486A2 (en) 2007-01-04
WO2007002486A3 true WO2007002486A3 (en) 2007-05-31

Family

ID=37595911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/024622 WO2007002486A2 (en) 2005-06-22 2006-06-22 Amplifier and amplification method

Country Status (1)

Country Link
WO (1) WO2007002486A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101889087B (en) * 2007-11-29 2013-04-03 苏州瑞博生物技术有限公司 A complex molecule interfering the expression of target genes and preparing methods thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181796B1 (en) * 1998-02-13 2001-01-30 National Semiconductor Corporation Method and system which drives left, right, and subwoofer transducers with multichannel amplifier having reduced power supply requirements

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181796B1 (en) * 1998-02-13 2001-01-30 National Semiconductor Corporation Method and system which drives left, right, and subwoofer transducers with multichannel amplifier having reduced power supply requirements

Also Published As

Publication number Publication date
WO2007002486A2 (en) 2007-01-04

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