JPS55149530A - External noise eliminating method in digitizer - Google Patents

External noise eliminating method in digitizer

Info

Publication number
JPS55149530A
JPS55149530A JP5703879A JP5703879A JPS55149530A JP S55149530 A JPS55149530 A JP S55149530A JP 5703879 A JP5703879 A JP 5703879A JP 5703879 A JP5703879 A JP 5703879A JP S55149530 A JPS55149530 A JP S55149530A
Authority
JP
Japan
Prior art keywords
data
register
permissible value
difference
external noise
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
JP5703879A
Other languages
Japanese (ja)
Other versions
JPS6345127B2 (en
Inventor
Toshiyuki Makino
Takeshi Yamaguchi
Koichi Iizuka
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.)
Via Mechanics Ltd
Original Assignee
Hitachi Seiko 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 Hitachi Seiko Ltd filed Critical Hitachi Seiko Ltd
Priority to JP5703879A priority Critical patent/JPS55149530A/en
Publication of JPS55149530A publication Critical patent/JPS55149530A/en
Publication of JPS6345127B2 publication Critical patent/JPS6345127B2/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
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • 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

Abstract

PURPOSE:To eliminate the noise component independently of noise time, by comparing the digital quantity adjacent after conversion twice or more, and making effective the digital quantity only when the difference is less than the permissible value. CONSTITUTION:External noise 2 is superimposed on the analog quantity 1 to be analog input to 3 and it is input to the control unit 6 via the A/D converter 4. The control unit 6 records the first data in the register 1 and the second data is recorded in the register 2. The absolute value of the difference between the first and the second data is stored in the register 3. Next, the absolute value of this difference is compared at the permissible value, and the second data is made effective if it is within the permissible value. Further, if more than the permissible value, the second data is taken as the first data and the second data is again fetched, compared with the permissible value. At the end of sampling, the effective data is stored in the register 1.
JP5703879A 1979-05-11 1979-05-11 External noise eliminating method in digitizer Granted JPS55149530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5703879A JPS55149530A (en) 1979-05-11 1979-05-11 External noise eliminating method in digitizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5703879A JPS55149530A (en) 1979-05-11 1979-05-11 External noise eliminating method in digitizer

Publications (2)

Publication Number Publication Date
JPS55149530A true JPS55149530A (en) 1980-11-20
JPS6345127B2 JPS6345127B2 (en) 1988-09-08

Family

ID=13044264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5703879A Granted JPS55149530A (en) 1979-05-11 1979-05-11 External noise eliminating method in digitizer

Country Status (1)

Country Link
JP (1) JPS55149530A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933521U (en) * 1982-08-20 1984-03-01 アロイ工器株式会社 painting equipment
JPS5962219U (en) * 1982-10-18 1984-04-24 マツダ株式会社 Diesel engine exhaust purification device
JPS59167110A (en) * 1983-03-11 1984-09-20 Sanyo Electric Co Ltd Noise eliminating device
JPS59200522A (en) * 1983-04-27 1984-11-13 Sharp Corp A/d converter
JPS60160221A (en) * 1984-01-31 1985-08-21 Victor Co Of Japan Ltd Analog-digital converter
US4616329A (en) * 1983-08-26 1986-10-07 Bio-Rad Laboratories, Inc. Self-calibrating adaptive ranging apparatus and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840365A (en) * 1971-09-23 1973-06-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840365A (en) * 1971-09-23 1973-06-13

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933521U (en) * 1982-08-20 1984-03-01 アロイ工器株式会社 painting equipment
JPH0138649Y2 (en) * 1982-08-20 1989-11-20
JPS5962219U (en) * 1982-10-18 1984-04-24 マツダ株式会社 Diesel engine exhaust purification device
JPS59167110A (en) * 1983-03-11 1984-09-20 Sanyo Electric Co Ltd Noise eliminating device
JPH047610B2 (en) * 1983-03-11 1992-02-12 Sanyo Electric Co
JPS59200522A (en) * 1983-04-27 1984-11-13 Sharp Corp A/d converter
JPH0530090B2 (en) * 1983-04-27 1993-05-07 Sharp Kk
US4616329A (en) * 1983-08-26 1986-10-07 Bio-Rad Laboratories, Inc. Self-calibrating adaptive ranging apparatus and method
JPS60160221A (en) * 1984-01-31 1985-08-21 Victor Co Of Japan Ltd Analog-digital converter

Also Published As

Publication number Publication date
JPS6345127B2 (en) 1988-09-08

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