JPS56126317A - Polarity switching circuit - Google Patents

Polarity switching circuit

Info

Publication number
JPS56126317A
JPS56126317A JP2997780A JP2997780A JPS56126317A JP S56126317 A JPS56126317 A JP S56126317A JP 2997780 A JP2997780 A JP 2997780A JP 2997780 A JP2997780 A JP 2997780A JP S56126317 A JPS56126317 A JP S56126317A
Authority
JP
Japan
Prior art keywords
input analog
polarity
switches
analog signal
switching circuit
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
JP2997780A
Other languages
Japanese (ja)
Other versions
JPS643374B2 (en
Inventor
Kazuo Ogasawara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2997780A priority Critical patent/JPS56126317A/en
Publication of JPS56126317A publication Critical patent/JPS56126317A/en
Publication of JPS643374B2 publication Critical patent/JPS643374B2/ja
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
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M1/0607—Offset or drift compensation
    • 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 reduce an error of polarity for the input analog voltage, by adding a discharging switch. CONSTITUTION:The discharging switch 41 turns the switches 31 and 33 off regardless of the plus or minus of the input analog signal after the switches 31 and 33 are turned on with a decision given to the polarity of the input analog signal. The electric charge accumulated to the capacity 39 is discharged by turning the switch 41 on. After a sufficient discharge of the electric charge, a control is given under a prescribed condition to the switches 31-34 and by the polarity of the input analog signal.
JP2997780A 1980-03-10 1980-03-10 Polarity switching circuit Granted JPS56126317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2997780A JPS56126317A (en) 1980-03-10 1980-03-10 Polarity switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2997780A JPS56126317A (en) 1980-03-10 1980-03-10 Polarity switching circuit

Publications (2)

Publication Number Publication Date
JPS56126317A true JPS56126317A (en) 1981-10-03
JPS643374B2 JPS643374B2 (en) 1989-01-20

Family

ID=12291012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2997780A Granted JPS56126317A (en) 1980-03-10 1980-03-10 Polarity switching circuit

Country Status (1)

Country Link
JP (1) JPS56126317A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242727A (en) * 1984-02-13 1985-12-02 インタ−シル，インコ−ポレ−テツド Analog-to-digital converter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338971U (en) * 1989-08-25 1991-04-15
JPH04359291A (en) * 1991-06-05 1992-12-11 Sharp Corp Picture signal processing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420647A (en) * 1977-07-18 1979-02-16 Hitachi Ltd Integral analog-to-digital converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420647A (en) * 1977-07-18 1979-02-16 Hitachi Ltd Integral analog-to-digital converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242727A (en) * 1984-02-13 1985-12-02 インタ−シル，インコ−ポレ−テツド Analog-to-digital converter
JPH0546126B2 (en) * 1984-02-13 1993-07-13 Intersil Inc

Also Published As

Publication number Publication date
JPS643374B2 (en) 1989-01-20

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