JPS57106221A - Analogue-digital converter - Google Patents

Analogue-digital converter

Info

Publication number
JPS57106221A
JPS57106221A JP18171880A JP18171880A JPS57106221A JP S57106221 A JPS57106221 A JP S57106221A JP 18171880 A JP18171880 A JP 18171880A JP 18171880 A JP18171880 A JP 18171880A JP S57106221 A JPS57106221 A JP S57106221A
Authority
JP
Japan
Prior art keywords
conversion
speed
inputted
signal
converter
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.)
Pending
Application number
JP18171880A
Other languages
Japanese (ja)
Inventor
Makoto Chikuma
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP18171880A priority Critical patent/JPS57106221A/en
Publication of JPS57106221A publication Critical patent/JPS57106221A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To switch a high-speed conversion and a low-speed conversion with one kind of hardware, by changing the number of times of addition of a digital integrator. CONSTITUTION:When an AD conversion start signal 1 is inputted to a control circuit 3, an AD conversion start signal 2 is inputted to a high-speed AD converter 1 to start AD conversion. The digital signal from the high-speed AD converter 1 is inputted to an adding circuit 21 and is added to an initial value 0. If a conversion mode designating signal designates the high-speed AD conversion then, data of the adding circuit 21 is outputted through an averaging circuit 22 as the AD conversion output as it is. If the conversion mode designating signal designates the low-speed AD conversion (AD conversion mode for elimination of ripple and noise), the second AD conversion start signal 2 is inputted from the control circuit 3 to the high-speed AD converter 1, and AD conversion is executed, and the obtained digital signal is added to the preceding digital signal. Similarly, AD conversion and addition are repeated a prescribed number of times.
JP18171880A 1980-12-22 1980-12-22 Analogue-digital converter Pending JPS57106221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18171880A JPS57106221A (en) 1980-12-22 1980-12-22 Analogue-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18171880A JPS57106221A (en) 1980-12-22 1980-12-22 Analogue-digital converter

Publications (1)

Publication Number Publication Date
JPS57106221A true JPS57106221A (en) 1982-07-02

Family

ID=16105648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18171880A Pending JPS57106221A (en) 1980-12-22 1980-12-22 Analogue-digital converter

Country Status (1)

Country Link
JP (1) JPS57106221A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60158727A (en) * 1983-12-23 1985-08-20 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Method of improving resolution of digitized time depending signal and circuit therefor
JPS61102821A (en) * 1984-10-25 1986-05-21 Yokogawa Hokushin Electric Corp Digital voltmeter
JPS62500554A (en) * 1984-10-05 1987-03-05 ビ−エスア−ル　ノ−ス　アメリカ　リミテツド Analog-digital converter
JPH0396016A (en) * 1989-09-07 1991-04-22 Nec Corp A/d conversion circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5431264A (en) * 1977-08-15 1979-03-08 Hitachi Ltd Time-division type a/d converter
JPS5523694A (en) * 1978-06-06 1980-02-20 Morgan Smith Electronics Analoggtoodigital converter
JPS5551547B1 (en) * 1969-02-27 1980-12-24

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5551547B1 (en) * 1969-02-27 1980-12-24
JPS5431264A (en) * 1977-08-15 1979-03-08 Hitachi Ltd Time-division type a/d converter
JPS5523694A (en) * 1978-06-06 1980-02-20 Morgan Smith Electronics Analoggtoodigital converter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60158727A (en) * 1983-12-23 1985-08-20 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Method of improving resolution of digitized time depending signal and circuit therefor
JPS62500554A (en) * 1984-10-05 1987-03-05 ビ−エスア−ル　ノ−ス　アメリカ　リミテツド Analog-digital converter
JPS61102821A (en) * 1984-10-25 1986-05-21 Yokogawa Hokushin Electric Corp Digital voltmeter
JPH0515328B2 (en) * 1984-10-25 1993-03-01 Yokogawa Electric Corp
JPH0396016A (en) * 1989-09-07 1991-04-22 Nec Corp A/d conversion circuit

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