JPS5741031A - Parallel signal generating circuit - Google Patents

Parallel signal generating circuit

Info

Publication number
JPS5741031A
JPS5741031A JP11622580A JP11622580A JPS5741031A JP S5741031 A JPS5741031 A JP S5741031A JP 11622580 A JP11622580 A JP 11622580A JP 11622580 A JP11622580 A JP 11622580A JP S5741031 A JPS5741031 A JP S5741031A
Authority
JP
Japan
Prior art keywords
signal
converter
analog
digital
standard
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
JP11622580A
Other languages
Japanese (ja)
Inventor
Shigehiro Ito
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP11622580A priority Critical patent/JPS5741031A/en
Publication of JPS5741031A publication Critical patent/JPS5741031A/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
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0626—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by filtering
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H03M1/1014—Calibration at one point of the transfer characteristic, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M1/1023—Offset correction

Landscapes

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

Abstract

PURPOSE:To remove a drift of a D/A converter, by converting a standard digital signal to an analog signal by the D/A converter, and feeding back a difference between said analog signal and a reference analog signal, to said D/A converter. CONSTITUTION:Digital data D1-D4 are applied by time division to an input terminal 2, and a digital address signal is applied to an input terminal 6. In this case, the digital data D4 is a standard signal and a constant value. The digital data D1- D4 are converted by time division to analog signals by a D/A converter 12, and are stored in corresponding analog memories 24, 26, 28 and 52 by the address signal. A standard signal stored in the memory 52 is compared with a reference analog signal by a comparator 54, and a difference between both the signals is applied to the D/A converter 12 through a low-pass filter 56. Accordingly, a drift caused by a temperature change and an electric power supply variation is removed from the analog data.
JP11622580A 1980-08-22 1980-08-22 Parallel signal generating circuit Pending JPS5741031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11622580A JPS5741031A (en) 1980-08-22 1980-08-22 Parallel signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11622580A JPS5741031A (en) 1980-08-22 1980-08-22 Parallel signal generating circuit

Publications (1)

Publication Number Publication Date
JPS5741031A true JPS5741031A (en) 1982-03-06

Family

ID=14681923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11622580A Pending JPS5741031A (en) 1980-08-22 1980-08-22 Parallel signal generating circuit

Country Status (1)

Country Link
JP (1) JPS5741031A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0260339U (en) * 1988-10-27 1990-05-02
JPH0539175U (en) * 1991-07-02 1993-05-25 マブチモーター株式会社 Brush device for small motors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279863A (en) * 1975-12-26 1977-07-05 Fujitsu Ltd Operation method for ladder-type network
JPS539984A (en) * 1976-07-13 1978-01-28 Chino Works Ltd Inspecting apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279863A (en) * 1975-12-26 1977-07-05 Fujitsu Ltd Operation method for ladder-type network
JPS539984A (en) * 1976-07-13 1978-01-28 Chino Works Ltd Inspecting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0260339U (en) * 1988-10-27 1990-05-02
JPH0539175U (en) * 1991-07-02 1993-05-25 マブチモーター株式会社 Brush device for small motors

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