GB2562553B - Alternating current (AC) load identification technique using a search algorithm - Google Patents

Alternating current (AC) load identification technique using a search algorithm Download PDF

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Publication number
GB2562553B
GB2562553B GB1721508.8A GB201721508A GB2562553B GB 2562553 B GB2562553 B GB 2562553B GB 201721508 A GB201721508 A GB 201721508A GB 2562553 B GB2562553 B GB 2562553B
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GB
United Kingdom
Prior art keywords
alternating current
search algorithm
load identification
identification technique
technique
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.)
Active
Application number
GB1721508.8A
Other versions
GB2562553A (en
GB201721508D0 (en
Inventor
Agarwal Shatam
Chuck Storvik Alvin
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.)
Cirrus Logic International Semiconductor Ltd
Original Assignee
Cirrus Logic International Semiconductor Ltd
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 US15/050,139 external-priority patent/US9986351B2/en
Priority claimed from US15/099,340 external-priority patent/US9712906B1/en
Application filed by Cirrus Logic International Semiconductor Ltd filed Critical Cirrus Logic International Semiconductor Ltd
Publication of GB201721508D0 publication Critical patent/GB201721508D0/en
Publication of GB2562553A publication Critical patent/GB2562553A/en
Application granted granted Critical
Publication of GB2562553B publication Critical patent/GB2562553B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Rectifiers (AREA)
  • Amplifiers (AREA)
GB1721508.8A 2016-02-22 2016-06-28 Alternating current (AC) load identification technique using a search algorithm Active GB2562553B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15/050,139 US9986351B2 (en) 2016-02-22 2016-02-22 Direct current (DC) and/or alternating current (AC) load detection for audio codec
US15/099,340 US9712906B1 (en) 2016-02-22 2016-04-14 Alternating current (AC) load identification technique using a search algorithm
PCT/US2016/039866 WO2017146760A1 (en) 2016-02-22 2016-06-28 Alternating current (ac) load identification technique using a search algorithm

Publications (3)

Publication Number Publication Date
GB201721508D0 GB201721508D0 (en) 2018-01-31
GB2562553A GB2562553A (en) 2018-11-21
GB2562553B true GB2562553B (en) 2021-09-01

Family

ID=56618222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1721508.8A Active GB2562553B (en) 2016-02-22 2016-06-28 Alternating current (AC) load identification technique using a search algorithm

Country Status (2)

Country Link
GB (1) GB2562553B (en)
WO (1) WO2017146760A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040122541A1 (en) * 2002-12-19 2004-06-24 Disanza Leonard J. Programmable analog input/output integrated circuit system
US20080155134A1 (en) * 2006-12-21 2008-06-26 Daniel Mulligan Automatically disabling input/output signal processing based on the required multimedia format
WO2009134537A2 (en) * 2008-05-02 2009-11-05 Bose Corporation Detecting a loudspeaker configuration
US20140003616A1 (en) * 2012-07-02 2014-01-02 Timothy M. Johnson Headset Impedance Detection
US20140010381A1 (en) * 2012-07-09 2014-01-09 Anthony S. Doy System and Method for Optimized Playback of Audio Signals through Headphones

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040122541A1 (en) * 2002-12-19 2004-06-24 Disanza Leonard J. Programmable analog input/output integrated circuit system
US20080155134A1 (en) * 2006-12-21 2008-06-26 Daniel Mulligan Automatically disabling input/output signal processing based on the required multimedia format
WO2009134537A2 (en) * 2008-05-02 2009-11-05 Bose Corporation Detecting a loudspeaker configuration
US20140003616A1 (en) * 2012-07-02 2014-01-02 Timothy M. Johnson Headset Impedance Detection
US20140010381A1 (en) * 2012-07-09 2014-01-09 Anthony S. Doy System and Method for Optimized Playback of Audio Signals through Headphones

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BRENNAN S, "Measuring a Loudspeaker Impedance Profile Using the AD5933", APPLICATION NOTE ANALOG DEVICES,, (200706), no. AN-843, pages 1 - 12, XP007908782 *

Also Published As

Publication number Publication date
GB2562553A (en) 2018-11-21
WO2017146760A1 (en) 2017-08-31
GB201721508D0 (en) 2018-01-31

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