GB1140074A - Improvements in or relating to analogue to digital conversion systems - Google Patents

Improvements in or relating to analogue to digital conversion systems

Info

Publication number
GB1140074A
GB1140074A GB1070866A GB1070866A GB1140074A GB 1140074 A GB1140074 A GB 1140074A GB 1070866 A GB1070866 A GB 1070866A GB 1070866 A GB1070866 A GB 1070866A GB 1140074 A GB1140074 A GB 1140074A
Authority
GB
United Kingdom
Prior art keywords
voltage
input
feed
value
comparator
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
GB1070866A
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.)
Japan Atomic Energy Agency
Original Assignee
Japan Atomic Energy Research Institute
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 Japan Atomic Energy Research Institute filed Critical Japan Atomic Energy Research Institute
Publication of GB1140074A publication Critical patent/GB1140074A/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
    • H03M1/12—Analogue/digital converters
    • H03M1/1235—Non-linear conversion not otherwise provided for in subgroups of H03M1/12
    • 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
    • H03M1/48—Servo-type converters

Landscapes

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

Abstract

1,140,074. Analogue to digital converters. JAPAN ATOMIC ENERGY RESEARCH INSTITUTE. 11 March, 1966 [12 March, 1965 (2)], No. 10708/66. Heading G4H. In an analogue - to - digital converter system of the type comprising a digital part 10, Fig. 3, for generating a feed-back balance voltage for comparison at 11 with the input voltage the comparator output serving to control the digital part so as to achieve a balance, the feed-back voltage has added to it a small auxiliary voltage and this is compared with the input at 31 and the comparator output is used to control the value in the digital part 10. If the value arrived at is "8" the feed-back voltage 41, Fig. 4, is just less than the input voltage 40. This auxiliary voltage #v when added to the voltage 41 exceeds the input 40. The output from comparator 31 is then effective to cause the value to step down to "7" and the process repeats, the input 40 being still less than the combined signal. When the value is stepped down again to "6" the input exceeds the combined signal. The value is then restored to "7" and this is read out to the output store 32. Instead of using two comparators 11 and 31 a single comparator may be used, switched first to balance the feed-back voltage and then to compare the input with the feed-back voltage increased by the auxiliary voltage. The auxiliary voltage, in another form, is alternating. In the form of Fig. 9 (not shown) the input voltage is applied to a chain of comparators having successively lower reference signals derived from a potentiometer. A logic circuit identifies the comparator with the highest reference voltage exceeded by the input. The auxiliary voltage is added or subtracted from the input voltage when the switch is changed over. The auxiliary voltage may be alternating in this form also. The auxiliary voltage defines an amplitude range and determines the channel to which a signal corresponding to any input signal shall be applied. The apparatus is for analysing the amplitudes of pulses derived from a nuclear detector, a pulse being sent to one of a number of counters according to the amplitude range of the pulse.
GB1070866A 1965-03-12 1966-03-11 Improvements in or relating to analogue to digital conversion systems Expired GB1140074A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1399465 1965-03-12
JP1399565 1965-03-12

Publications (1)

Publication Number Publication Date
GB1140074A true GB1140074A (en) 1969-01-15

Family

ID=26349859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1070866A Expired GB1140074A (en) 1965-03-12 1966-03-11 Improvements in or relating to analogue to digital conversion systems

Country Status (2)

Country Link
DE (1) DE1462664A1 (en)
GB (1) GB1140074A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130362A (en) * 1982-09-27 1984-05-31 Owens Illinois Inc Optical registration sensor.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2852095C2 (en) * 1978-11-30 1982-09-09 Siemens AG, 1000 Berlin und 8000 München Analog-digital conversion with step-by-step approximation of a digital signal to an analog signal to be converted

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130362A (en) * 1982-09-27 1984-05-31 Owens Illinois Inc Optical registration sensor.

Also Published As

Publication number Publication date
DE1462664A1 (en) 1969-05-08

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