GB1535094A - Analogue-to-digital conversion - Google Patents

Analogue-to-digital conversion

Info

Publication number
GB1535094A
GB1535094A GB22279/76A GB2227976A GB1535094A GB 1535094 A GB1535094 A GB 1535094A GB 22279/76 A GB22279/76 A GB 22279/76A GB 2227976 A GB2227976 A GB 2227976A GB 1535094 A GB1535094 A GB 1535094A
Authority
GB
United Kingdom
Prior art keywords
analogue
converter
input
time interval
correction signal
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.)
Expired
Application number
GB22279/76A
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.)
Avery Weigh Tronix Ltd
Original Assignee
W&T Avery 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
Application filed by W&T Avery Ltd filed Critical W&T Avery Ltd
Priority to GB22279/76A priority Critical patent/GB1535094A/en
Publication of GB1535094A publication Critical patent/GB1535094A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

1535094 A/D converter W & T AVERY Ltd 14 March 1977 [28 May 1976] 22279/76 Heading H3H An A-to-D converter in which the analogue signal to be digitized is integrated over a given time interval and the integral is then digitized, includes means for applying to the analogue input of the converter an analogue correction signal whose integral includes a non-linear term. In a dual-ramp converter in which the input is integrated for a fixed time interval, then a reference is integrated until zero is returned to with counting of the time interval the latter takes, the correction signal may be linear (to correct for a quadratic non-linearity in a transducer providing the analogue input) and provided to the reference input from the (clockdriven) counter via a D/A converter, biasing, and a potentiometer. Alternatively, the correction signal may be a fraction of the analogue input (selected by a potentiometer), optionally with a fraction of the reference added.
GB22279/76A 1977-03-14 1977-03-14 Analogue-to-digital conversion Expired GB1535094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB22279/76A GB1535094A (en) 1977-03-14 1977-03-14 Analogue-to-digital conversion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22279/76A GB1535094A (en) 1977-03-14 1977-03-14 Analogue-to-digital conversion

Publications (1)

Publication Number Publication Date
GB1535094A true GB1535094A (en) 1978-12-06

Family

ID=10176818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22279/76A Expired GB1535094A (en) 1977-03-14 1977-03-14 Analogue-to-digital conversion

Country Status (1)

Country Link
GB (1) GB1535094A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120481A (en) * 1982-04-23 1983-11-30 Comark Electronics Limited Improvements in or relating to analogue to digital converters
CN108490373A (en) * 2018-02-07 2018-09-04 中北大学 A kind of full-automatic electronic type ballistic galvanometer and its adjusting zero method of returning to zero

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120481A (en) * 1982-04-23 1983-11-30 Comark Electronics Limited Improvements in or relating to analogue to digital converters
CN108490373A (en) * 2018-02-07 2018-09-04 中北大学 A kind of full-automatic electronic type ballistic galvanometer and its adjusting zero method of returning to zero
CN108490373B (en) * 2018-02-07 2020-05-08 中北大学 Full-automatic zero-setting electronic impact current meter and zero-setting method thereof

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee