FR2331205A1 - Parallel cascade A:D converter system - generates series data word representing applied analogue signal and uses nonlinear transfer function - Google Patents

Parallel cascade A:D converter system - generates series data word representing applied analogue signal and uses nonlinear transfer function

Info

Publication number
FR2331205A1
FR2331205A1 FR7633652A FR7633652A FR2331205A1 FR 2331205 A1 FR2331205 A1 FR 2331205A1 FR 7633652 A FR7633652 A FR 7633652A FR 7633652 A FR7633652 A FR 7633652A FR 2331205 A1 FR2331205 A1 FR 2331205A1
Authority
FR
France
Prior art keywords
transfer function
data word
series data
nonlinear transfer
converter system
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
FR7633652A
Other languages
French (fr)
Other versions
FR2331205B3 (en
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of FR2331205A1 publication Critical patent/FR2331205A1/en
Application granted granted Critical
Publication of FR2331205B3 publication Critical patent/FR2331205B3/fr
Granted 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
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H03M1/16—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit with scale factor modification, i.e. by changing the amplification between the steps

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

The conversion is carred out in accordance with a nonlinear transfer function. This function forms a curve which can be approximated by a series of linear sections, (a, b, c....) There is a first converter circuit which can generate a first number defining one of the linear sections on the curve. A second converter circuit generates a second number which defines a level in the section. The two numbers from the series data word. The values of output values corresponding to input values produced by the curve may fall within given tolerances.
FR7633652A 1975-11-07 1976-11-08 Parallel cascade A:D converter system - generates series data word representing applied analogue signal and uses nonlinear transfer function Granted FR2331205A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62982475A 1975-11-07 1975-11-07

Publications (2)

Publication Number Publication Date
FR2331205A1 true FR2331205A1 (en) 1977-06-03
FR2331205B3 FR2331205B3 (en) 1979-07-20

Family

ID=24524647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633652A Granted FR2331205A1 (en) 1975-11-07 1976-11-08 Parallel cascade A:D converter system - generates series data word representing applied analogue signal and uses nonlinear transfer function

Country Status (3)

Country Link
JP (1) JPS5260054A (en)
DE (1) DE2647275A1 (en)
FR (1) FR2331205A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2369569A1 (en) * 1976-10-27 1978-05-26 Int Standard Electric Corp Measuring instrument with digital display - has logarithmic to linear converter with automatic ranging for non linear input signals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859624A (en) * 1981-10-02 1983-04-08 Matsushita Electric Ind Co Ltd Analog-to-digital converting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2369569A1 (en) * 1976-10-27 1978-05-26 Int Standard Electric Corp Measuring instrument with digital display - has logarithmic to linear converter with automatic ranging for non linear input signals

Also Published As

Publication number Publication date
JPS5260054A (en) 1977-05-18
DE2647275A1 (en) 1977-05-12
FR2331205B3 (en) 1979-07-20

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Legal Events

Date Code Title Description
ST Notification of lapse