JPS558178A - Analog-digital converter - Google Patents

Analog-digital converter

Info

Publication number
JPS558178A
JPS558178A JP8174278A JP8174278A JPS558178A JP S558178 A JPS558178 A JP S558178A JP 8174278 A JP8174278 A JP 8174278A JP 8174278 A JP8174278 A JP 8174278A JP S558178 A JPS558178 A JP S558178A
Authority
JP
Japan
Prior art keywords
input
value
bias voltage
fixed
analog
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
JP8174278A
Other languages
Japanese (ja)
Other versions
JPS5946448B2 (en
Inventor
Jiro Katsuhara
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8174278A priority Critical patent/JPS5946448B2/en
Publication of JPS558178A publication Critical patent/JPS558178A/en
Publication of JPS5946448B2 publication Critical patent/JPS5946448B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To enable the high-speed input process and the continuous input process by applying the fixed bias voltage to the analog input and then to the amplifier to which the amplification factor is set to a proper level and checking the signal obtained by giving A/D conversion to the output of the amplifier.
CONSTITUTION: The analog signal sent from lead wire 11 is supplied to amplification part 3 after receiving the fixed bias voltage through DC power source 12 and then amplified to the fixed scale proportional to the input to be sent to A/D converter 2. In this case, the amplification factor of part 3 is set so that the output of converter 2 may always be less than the value obtained by subtracting the fixed value from the maximum value. The A/D-converted digital signal is supplied to checking process part 13 to be made sure whether it always be more than the bias voltage and under the value obtained by subtracting the fixed value from the maximum value. And if the result of confirmation is normal, a digital subtraction is given to the input value by amount of the bias voltage. After this, the normal data process is carried out. In this way, the input signal is never cut off, thus enabling the high-speed and continuous input process.
COPYRIGHT: (C)1980,JPO&Japio
JP8174278A 1978-07-04 1978-07-04 Analog/digital converter Expired JPS5946448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8174278A JPS5946448B2 (en) 1978-07-04 1978-07-04 Analog/digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8174278A JPS5946448B2 (en) 1978-07-04 1978-07-04 Analog/digital converter

Publications (2)

Publication Number Publication Date
JPS558178A true JPS558178A (en) 1980-01-21
JPS5946448B2 JPS5946448B2 (en) 1984-11-13

Family

ID=13754881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8174278A Expired JPS5946448B2 (en) 1978-07-04 1978-07-04 Analog/digital converter

Country Status (1)

Country Link
JP (1) JPS5946448B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56140241U (en) * 1980-03-25 1981-10-23
JPS58145217A (en) * 1982-02-23 1983-08-30 Toshiba Corp Digital filter
JPS63234727A (en) * 1987-03-24 1988-09-30 Yokogawa Electric Corp A/d converter testing instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56140241U (en) * 1980-03-25 1981-10-23
JPS58145217A (en) * 1982-02-23 1983-08-30 Toshiba Corp Digital filter
JPS63234727A (en) * 1987-03-24 1988-09-30 Yokogawa Electric Corp A/d converter testing instrument

Also Published As

Publication number Publication date
JPS5946448B2 (en) 1984-11-13

Similar Documents

Publication Publication Date Title
JPS5441061A (en) Analogue/digital converter
JPS57138208A (en) Power detecting circuit and gain control circuit using it
DE3278230D1 (en) Method and apparatus for a/d conversion
JPS56136027A (en) Signal processor having quantization distortion reduced
JPS54128382A (en) Tuning signal intensity detecting circuit
JPS558178A (en) Analog-digital converter
JPS55110428A (en) Analog signal input unit
JPS5758414A (en) Analog-to-digital conversion circuit providing agc function
JPS5544608A (en) Kana-chinese character conversion device
JPS54100763A (en) Digital meter
JPS5539469A (en) Envelope feedback system
JPS55158734A (en) Analog-digital converter
JPS5544972A (en) Measuring range changing method and device for pen recorder
JPS55151820A (en) Analog-digital converter
JPS5552916A (en) Weighing meter
JPS55104129A (en) Analog-digital converter
JPS5440069A (en) Ad converter
JPS5679509A (en) Automatic gain control circuit
JPS57190416A (en) Analog-to-digital converter
JPS5582540A (en) Analog digital conversion unit
JPS5687828A (en) Infrared ray sensor
JPS57164603A (en) Amplifier
JPS5672580A (en) Read signal processor
JPS57129508A (en) Amplifier
JPS55143454A (en) Level detector