JPS5489556A - Stabilizing circuit of analog to digital converter - Google Patents

Stabilizing circuit of analog to digital converter

Info

Publication number
JPS5489556A
JPS5489556A JP15988977A JP15988977A JPS5489556A JP S5489556 A JPS5489556 A JP S5489556A JP 15988977 A JP15988977 A JP 15988977A JP 15988977 A JP15988977 A JP 15988977A JP S5489556 A JPS5489556 A JP S5489556A
Authority
JP
Japan
Prior art keywords
converter
signal
level
analog
digital signal
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
JP15988977A
Other languages
Japanese (ja)
Inventor
Kenjiro Endo
Masanori Tanaka
Yoshiyuki Ishizawa
Koji Iwasaki
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
EMI Records Japan Inc
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Toshiba Emi 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, Toshiba Emi Ltd filed Critical Toshiba Corp
Priority to JP15988977A priority Critical patent/JPS5489556A/en
Publication of JPS5489556A publication Critical patent/JPS5489556A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To prevent the malfunction due to level variation and noise in advance and to perform stable digital signal conversion at all times, by constituting the converter so that the operation of conversion can not be made if the analog input signal is not changed a given level or more.
CONSTITUTION: The circuit provides the A/D converter 11 converting the analog input signal X1 into digital signal, D/A converter 13 converting the digital signal into analog signal, level shift circuit 14 performing addition and subtraction of the output to a given finest increment and obtaining the upper and lower limits X+ and X-, and comparison circuit 15 comparing the level of the analog input signal Xi to the upper and lower limits X+ and X-. As the result of comparison, when reaching X1>X+ or Xi<X-, the output signal of the comparison circuit 15 operates the A/D converter 11 and the operation of the A/D converter 11 is stopped when X-<Xi< X+; this operation is provided with the control means by the command signal, resulating that the malfunction due to level variation or noise can be prevented in advance and stable digital signal conversion can always be made.
COPYRIGHT: (C)1979,JPO&Japio
JP15988977A 1977-12-27 1977-12-27 Stabilizing circuit of analog to digital converter Pending JPS5489556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15988977A JPS5489556A (en) 1977-12-27 1977-12-27 Stabilizing circuit of analog to digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15988977A JPS5489556A (en) 1977-12-27 1977-12-27 Stabilizing circuit of analog to digital converter

Publications (1)

Publication Number Publication Date
JPS5489556A true JPS5489556A (en) 1979-07-16

Family

ID=15703382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15988977A Pending JPS5489556A (en) 1977-12-27 1977-12-27 Stabilizing circuit of analog to digital converter

Country Status (1)

Country Link
JP (1) JPS5489556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6062242A (en) * 1983-09-14 1985-04-10 Tokyo Denshi Kogyo Kk Analog and digital coupling circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6062242A (en) * 1983-09-14 1985-04-10 Tokyo Denshi Kogyo Kk Analog and digital coupling circuit
JPH0153937B2 (en) * 1983-09-14 1989-11-16 Tokyo Electronic Ind Co

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