WO1992015153A3 - Analogue and digital convertors - Google Patents

Analogue and digital convertors Download PDF

Info

Publication number
WO1992015153A3
WO1992015153A3 PCT/GB1992/000312 GB9200312W WO9215153A3 WO 1992015153 A3 WO1992015153 A3 WO 1992015153A3 GB 9200312 W GB9200312 W GB 9200312W WO 9215153 A3 WO9215153 A3 WO 9215153A3
Authority
WO
WIPO (PCT)
Prior art keywords
analogue
digital convertors
error
signal
convertors
Prior art date
Application number
PCT/GB1992/000312
Other languages
French (fr)
Other versions
WO1992015153A2 (en
Inventor
Peter Graham Craven
Original Assignee
B & W Loudspeakers
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 B & W Loudspeakers filed Critical B & W Loudspeakers
Priority to DE69228987T priority Critical patent/DE69228987T2/en
Priority to US08/107,842 priority patent/US5548286A/en
Priority to JP50468692A priority patent/JP3226099B2/en
Priority to CA002107799A priority patent/CA2107799C/en
Priority to KR1019930702515A priority patent/KR100276013B1/en
Priority to EP92905070A priority patent/EP0573472B1/en
Publication of WO1992015153A2 publication Critical patent/WO1992015153A2/en
Publication of WO1992015153A3 publication Critical patent/WO1992015153A3/en
Priority to HK97102230A priority patent/HK1000724A1/en
Priority to US09/083,277 priority patent/US6031481A/en
Priority to US09/451,113 priority patent/US6232899B1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/82—Digital/analogue converters with intermediate conversion to time interval
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H03M1/1033—Calibration over the full range of the converter, e.g. for correcting differential non-linearity
    • H03M1/1038—Calibration over the full range of the converter, e.g. for correcting differential non-linearity by storing corrected or correction values in one or more digital look-up tables
    • 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
    • H03M1/20—Increasing resolution using an n bit system to obtain n + m bits
    • H03M1/208—Increasing resolution using an n bit system to obtain n + m bits by prediction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
    • H03M3/502—Details of the final digital/analogue conversion following the digital delta-sigma modulation
    • H03M3/506—Details of the final digital/analogue conversion following the digital delta-sigma modulation the final digital/analogue converter being constituted by a pulse width modulator
    • 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
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/504—Analogue/digital converters with intermediate conversion to time interval using pulse width modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/82—Digital/analogue converters with intermediate conversion to time interval
    • H03M1/822—Digital/analogue converters with intermediate conversion to time interval using pulse width modulation

Abstract

A signal convertor comprising a pulse modulator, and means for modifying the signal input thereto in dependence upon the error in previous values of the output thereof, to reduce the effects of said error within a desired signal band.
PCT/GB1992/000312 1991-02-22 1992-02-21 Analogue and digital convertors WO1992015153A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE69228987T DE69228987T2 (en) 1991-02-22 1992-02-21 ANALOG AND DIGITAL CONVERTER
US08/107,842 US5548286A (en) 1991-02-22 1992-02-21 Analogue and digital convertors using pulse edge modulators with non-linearity error correction
JP50468692A JP3226099B2 (en) 1991-02-22 1992-02-21 Analog and digital converter
CA002107799A CA2107799C (en) 1991-02-22 1992-02-21 Analogue and digital convertors
KR1019930702515A KR100276013B1 (en) 1991-02-22 1992-02-21 Analog/digital converter
EP92905070A EP0573472B1 (en) 1991-02-22 1992-02-21 Analogue and digital convertors
HK97102230A HK1000724A1 (en) 1991-02-22 1997-11-22 Analogue and digital convertors
US09/083,277 US6031481A (en) 1991-02-22 1998-05-22 Analogue and digital converters
US09/451,113 US6232899B1 (en) 1991-02-22 1999-11-30 Analogue and digital convertors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9103777.0 1991-02-22
GB919103777A GB9103777D0 (en) 1991-02-22 1991-02-22 Analogue and digital convertors

Publications (2)

Publication Number Publication Date
WO1992015153A2 WO1992015153A2 (en) 1992-09-03
WO1992015153A3 true WO1992015153A3 (en) 1992-10-15

Family

ID=10690440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000312 WO1992015153A2 (en) 1991-02-22 1992-02-21 Analogue and digital convertors

Country Status (9)

Country Link
US (4) US5548286A (en)
EP (2) EP0887937B1 (en)
JP (1) JP3226099B2 (en)
KR (1) KR100276013B1 (en)
CA (1) CA2107799C (en)
DE (2) DE69233616D1 (en)
GB (1) GB9103777D0 (en)
HK (1) HK1000724A1 (en)
WO (1) WO1992015153A2 (en)

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* Cited by examiner, † Cited by third party
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US5784017A (en) 1998-07-21
US5548286A (en) 1996-08-20

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