EP1133211A3 - Information apparatus having speakers - Google Patents

Information apparatus having speakers Download PDF

Info

Publication number
EP1133211A3
EP1133211A3 EP01301842A EP01301842A EP1133211A3 EP 1133211 A3 EP1133211 A3 EP 1133211A3 EP 01301842 A EP01301842 A EP 01301842A EP 01301842 A EP01301842 A EP 01301842A EP 1133211 A3 EP1133211 A3 EP 1133211A3
Authority
EP
European Patent Office
Prior art keywords
outputted
speakers
information apparatus
signal
power
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP01301842A
Other languages
German (de)
French (fr)
Other versions
EP1133211A2 (en
EP1133211B1 (en
Inventor
Keiichi c/o Pioneer Corporation Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer 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 Pioneer Corp filed Critical Pioneer Corp
Publication of EP1133211A2 publication Critical patent/EP1133211A2/en
Publication of EP1133211A3 publication Critical patent/EP1133211A3/en
Application granted granted Critical
Publication of EP1133211B1 publication Critical patent/EP1133211B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers

Abstract

In an information apparatus having speakers, an inspection signal of the frequency out of the audible frequency band outputted from the microcomputer 23 is inputted into the input terminal 14a of power IC 10a via the input switch circuit 22, a signal to be inspected, which is outputted to the ripple terminal 13a of power IC 10a according to the inspection signal, is extracted by the extracting circuit 20a, and it is judged by an intensity of the output signal outputted from the extracting circuit 20a whether or not speaker FLS is connected to the amplifier 12a.
EP01301842A 2000-03-06 2001-02-28 Information apparatus having speakers Expired - Lifetime EP1133211B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000060209 2000-03-06
JP2000060209A JP3908434B2 (en) 2000-03-06 2000-03-06 Information equipment with speakers

Publications (3)

Publication Number Publication Date
EP1133211A2 EP1133211A2 (en) 2001-09-12
EP1133211A3 true EP1133211A3 (en) 2002-12-04
EP1133211B1 EP1133211B1 (en) 2007-08-01

Family

ID=18580556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01301842A Expired - Lifetime EP1133211B1 (en) 2000-03-06 2001-02-28 Information apparatus having speakers

Country Status (3)

Country Link
EP (1) EP1133211B1 (en)
JP (1) JP3908434B2 (en)
DE (1) DE60129623T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10201517A1 (en) * 2002-01-17 2003-08-07 Bosch Gmbh Robert Diagnostic circuit for a tweeter speaker of a speaker combination
FR2954510B1 (en) * 2009-12-18 2012-06-08 Sagem Comm APPARATUS COMPRISING MEANS FOR CONNECTING TO AN EXTERNAL LOUDSPEAKER (S) AND MEANS FOR DETECTING SUCH A CONNECTION
JPWO2013179332A1 (en) * 2012-05-28 2016-01-14 三菱電機株式会社 Audio equipment
CN107708037B (en) * 2017-11-08 2020-08-18 深圳市沃特沃德股份有限公司 Control method and device of portable sound box

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479456A2 (en) * 1990-10-01 1992-04-08 Ford Motor Company Limited Automatically configured audio system
EP0607693A2 (en) * 1993-01-07 1994-07-27 Ford Motor Company Method and apparatus for diagnosing AMP to Speaker Connections
EP0841570A2 (en) * 1996-11-08 1998-05-13 Ford Motor Company Automatic detection of shorted loudspeakers in automotive audio systems
JPH10153634A (en) * 1996-11-21 1998-06-09 Matsushita Electric Ind Co Ltd Self-diagnosis device for speaker output
EP0909114A2 (en) * 1997-10-06 1999-04-14 Delco Electronics Corporation Method and apparatus for indicating speaker faults

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479456A2 (en) * 1990-10-01 1992-04-08 Ford Motor Company Limited Automatically configured audio system
EP0607693A2 (en) * 1993-01-07 1994-07-27 Ford Motor Company Method and apparatus for diagnosing AMP to Speaker Connections
EP0841570A2 (en) * 1996-11-08 1998-05-13 Ford Motor Company Automatic detection of shorted loudspeakers in automotive audio systems
JPH10153634A (en) * 1996-11-21 1998-06-09 Matsushita Electric Ind Co Ltd Self-diagnosis device for speaker output
EP0909114A2 (en) * 1997-10-06 1999-04-14 Delco Electronics Corporation Method and apparatus for indicating speaker faults

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) *

Also Published As

Publication number Publication date
EP1133211A2 (en) 2001-09-12
EP1133211B1 (en) 2007-08-01
JP2001251700A (en) 2001-09-14
JP3908434B2 (en) 2007-04-25
DE60129623T2 (en) 2007-12-06
DE60129623D1 (en) 2007-09-13

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